WO2005042737A1 - 遺伝子導入された樹状細胞の製造方法 - Google Patents
遺伝子導入された樹状細胞の製造方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2510/00—Genetically modified cells
- C12N2510/02—Cells for production
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2760/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssRNA viruses negative-sense
- C12N2760/00011—Details
- C12N2760/18011—Paramyxoviridae
- C12N2760/18811—Sendai virus
- C12N2760/18841—Use of virus, viral particle or viral elements as a vector
- C12N2760/18843—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
Definitions
- the present invention relates to a method for introducing a gene into dendritic cells.
- the method of the present invention can be used for the production of vaccines against cancer and infectious diseases.
- DCs Dendritic cells
- APCs antigen-presenting cells
- Dendritic cells have strong antigen-presenting ability and express antigen peptides in class I and class II on dendritic cells, and activate CD4 and CD8 T cells, respectively. This induces an in vivo immune response to specific antigens (eg, antigens of pathogenic microorganisms, tumor-associated antigens, and transplanted antigens).
- interleukin Gene Therapy 2000; 7,2113-2121
- interleukin ID-12 gene
- antigen-specific T cells by introducing Fas ligand gene.
- tumor immunotherapy it is possible to induce immunity against tumors by introducing tumor antigens into dendritic cells. Can be expected.
- Non-Patent Document 1 Steinman, R.M., 1991, Ann. Rev. Immunol. 9: 271
- Non-Patent Document 2 Banchereau, JB and RM Steinman, 1998, Nature 392: 245
- Non-patent document 3 Akiyama, Y. et al, 2000, Gene Therapy, 7: 2113-2121
- Non-patent document 4 Min, WP, 2000, J. Immunol, 164: 161-167
- Non-Patent Document 5 Hsu, F.J. et al "1996, Nat. Med. 2, 52-58
- Non-Patent Document 6 Nestle, F.O., et al "1998, Nat. Med. 4, 328-332
- Non-Patent Document 7 Camporeale, A., et al., 2003, Cancer.Res. 63, 3688-3694
- Non-Patent Document 8 Bon, L.A., et al., 2003, Nat. Immunol. 4, 1009-1015
- Non-Patent Document 9 Xia, D.J., et al., 2002, Gene therapy, 9, 592-601
- Non-patent document 10 Mullins, D.W. et al "2003, J. Exp.Med. 198, 1023-1034
- Non-patent document 11 Okada, T. et al” 2003, Gene therapy 10, 1891-1902
- Non-Patent Document 12 Nakahara, S. et al., 2003, Cancer Res. 63, 4112-4118
- Non-patent document 13 Teitz-Tennenbaum, S. et al "2003, Cancer Res. 63, 8466-8475
- Non-patent document 14 Imboden, M. et al., 2001, Cancer Res. 61, 1500-1507
- Non-patent document 15 Goldszmid, R.S. et al., 2003, J. Immunol. 171, 5940-5947
- Non-patent document 16 Strome, S.E. et al "2002, Cancer Res. 62, 1884-1889
- the present invention provides a method for introducing a gene into a dendritic cell.
- the present invention also provides a method for producing a dendritic cell into which a gene has been introduced.
- the present invention also provides the use of dendritic cells transfected by the method of the present invention.
- the present invention also provides a dendritic cell into which a gene has been introduced by the method of the present invention.
- the present invention provides a viral vector for gene transfer into dendritic cells.
- the present invention also provides a method for activating dendritic cells.
- a minus-strand RNA virus vector is a very excellent vector for gene transfer into dendritic cells.
- the gene transfer efficiency was as simple as contacting the minus-strand RNA virus vector with the dendritic cells for a short time, and the expression was detectable over a long period of time.
- Gene transfer into dendritic cells is expected to be applied to various immunotherapies, but gene transfer techniques into dendritic cells have been cumbersome and transfer efficiency has been insufficient until now.
- a foreign gene can be introduced into dendritic cells by a very simple procedure using a minus-strand RNA virus vector.
- the present invention relates to a method for introducing a gene into dendritic cells and the like, and more specifically, to the invention described in each claim. It is to be noted that one or more combinations of the inventions recited in the claims reciting the same claim are already intended for expression in the claims. That is, the present invention
- a method for producing a dendritic cell into which a gene has been introduced comprising a step of contacting the dendritic cell or its precursor cells with a minus-strand RNA virus vector,
- the contacting step is a step of contacting the immature ⁇ cells with the minus-strand RNA virus vector
- the contacting step is a step of contacting the CD34 + cell with a minus-strand RNA virus vector
- minus-strand RNA virus vector is a paramyxovirus vector
- (13) a method for suppressing tumor growth, comprising the step of administering the dendritic cells according to (11) or (12) to a tumor site,
- dendritic cells have high immunity-inducing ability, by introducing a desired antigen gene or immunoreactive gene into dendritic cells by the method of the present invention, they can be used for immunotherapy of cancer and infectious diseases. It is possible to produce a useful dendritic cell (DC) vaccine.
- DC dendritic cell
- a method of mixing tumor cell lysate (cell lysate) to present tumor antigens to tumor cells, peptide pulsing, and tumor antigen gene Can be used.
- the method of transducing tumor antigens into dendritic cells can be expected to extend the presentation time of tumor antigens in vivo more than tumor lysate and peptide pulse, and further restricts HLA (in the case of peptides; However, due to the binding to HLA, if the type of HLA changes, the site of the peptide used in the antigen will change).
- the retroviral vector ii) can be introduced only into cells in the growth phase.
- Ma transfection co-factors such as cytotoxic polypropylene are required, and the transfection takes time. For this reason, there is a disadvantage that the viability (survivability) of the cells is easily reduced.
- a method is generally used in which a vector is introduced into CD34-positive cells, followed by differentiation induction into dendritic cells. At this time, bone marrow cells, umbilical cord blood, and peripheral blood immobilized with G-CSF are required, which is very invasive to patients.
- retroviral vectors In addition, introduction of a retroviral vector into dendritic cells cannot raise the activity of dendritic cells.
- retroviral vectors integrate virus nucleic acids into the genome of cells, which may cause genomic damage.
- the lentivirus vector of iii which generally requires selection of cells into which the vector has been introduced by sorting or the like having a low efficiency of introduction, requires a long time to introduce the vector, similarly to the retrovirus vector. Therefore, the viability of the cells may be reduced.
- Lentiviruses are known to introduce genes into cells in the stationary phase, but the efficiency of dendritic cells to some extent and loss of proliferative activity depends on postentry restriction (J.
- the selection efficiency is generally low because the introduction efficiency is low. Requires a high concentration of titer for introduction, making it difficult to apply to clinical applications.
- auxiliary operations such as centrifugation or auxiliary factors such as polyblen are required, which makes the introduction procedure complicated and requires a long time.
- adenovirus 0 is expected to be a vector for dendritic cell gene transfer because of its transduction efficiency (about 80%) and direct gene transfer into differentiated dendritic cells. It is time-dependent and requires about 72 hours to obtain maximum transduction efficiency (J. Immnotherapy 2002; 25; 445-454). In addition, a 10-fold to 100-fold titer is required compared to negative-strand RNA viruses. More importantly, MOI that enhances gene transfer efficiency has an immunosuppressive effect that reduces the mixed lymphocyte reaction (MLR) of a T cell (Gene Therapy 2000; 7; 249-254). ) Is a problem (especially at high DC: T ratios). Also, the method of differentiating dendritic cells after gene transfer into stem cells such as CD34-positive cells may be difficult due to dilution of episome.
- MLR mixed lymphocyte reaction
- the vector satisfies.
- the gene transfer does not change the activated state of fibroblasts. Can induce the activation of dendritic cells, so that the step of activation after the introduction can be omitted, such as maintaining the viability of the cells, reducing costs, and further ex vivo operation time. It is thought that this will contribute to the reduction of emissions.
- dendritic cells transfected with a minus-strand RNA virus vector allows efficient activation of exogenous T cells, especially tumor-specific cytotoxic T cells, necessary for T cell transfer therapy in a short-term ex vivo manner. While it is easy to guide It has been certified. Furthermore, the transfection efficiency in the case where the dendritic cells were differentiated after introducing the gene into the stem cells reached about 70%, which was comparable to that of the lentivirus vector.
- FIG. 1 is a view showing a phenotype of dendritic cells derived from mononuclear cells of peripheral blood monocyte-enriched cells.
- the live cells identified by PI are gated, and CDllc and HLA-class II (DR, DP, DP, DQ) using an anti-CD11c-PE binding antibody and an anti-HLA-class II (DR, DP, DQ) FITC-binding antibody. DQ) expression was observed (left matrix).
- CDllc and HLA-class II select both positive gates for both S, 1) anti-CD14-APC binding antibody, 2) anti-CDla-APC binding antibody, 3) anti-CD80-biotin binding antibody (Stained secondarily with streptavidin-APC) using dot plots with CDllc (right three matrices).
- “Class” refers to the results using antibodies that recognize all HLA-DR, DQ, and DP
- “HLA-DR ⁇ refers to results using antibodies that specifically recognize HLA-DR. Represents
- FIG. 2 is a view showing expression of GFP and costimulatory molecules in DC into which SeV-GFP has been introduced.
- FIG. 3 is a graph showing the efficiency of introduction of SeV-GFP into human monocyte-derived dendritic cells and the activity of dendritic cells (2 days after infection).
- FIG. 4 is a graph showing the efficiency of introducing SeV-GFP into human monocyte-derived dendritic cells and the activity of dendritic cells (4 days after infection).
- FIG. 5 is a graph showing the efficiency of introducing SeV-GFP into human monocyte-derived dendritic cells and the activity of dendritic cells (day 8 after infection).
- FIG. 6 is a view showing a change in the number of DCs after introduction of SeV-GFP.
- FIG. 7 is a view showing a GFP expression period after introduction of SeV-GFP.
- FIG. 8 is a graph showing the effect of LPS stimulation on the efficiency of introducing SeV-GFP into human DC.
- FIG. 9 is a graph showing the effect of LPS stimulation on the efficiency of introducing SeV-GFP into human DC.
- FIG. 10 is a graph showing the results of an examination of incubation time in gene transfer into DC.
- FIG. 11 is a diagram showing gene transfer into DC derived from cord blood.
- FIG. 12 is a view showing gene transfer into DC derived from cord blood.
- FIG. 13 is a view showing the expression of costimulatory molecules after gene transfer (comparison with LPS stimulation).
- FIG. 14 is a view showing expression of costimulatory molecules after gene transfer (comparison with LPS stimulation).
- FIG. 15 is a view showing expression of costimulatory molecules after gene transfer (comparison with LPS stimulation).
- FIG. 16 is a view showing the phagocytic ability after gene transfer.
- FIG. 17 is a view showing the phagocytic ability after gene transfer.
- FIG. 18 is a view showing cytoin production of monocyte-derived DC after introduction of a minus-strand RNA virus vector.
- FIG. 19 is a view showing expression of a marker protein on dendritic cells after introduction of a minus-strand RNA virus vector.
- FIG. 20 is a view showing expression of a marker protein on dendritic cells after introduction of a minus-strand RNA virus vector.
- FIG. 21 shows the ability of DCs transfected with SeV-GFP to stimulate T-cells.
- FIG. 22 is a view showing a result of inducing MART-1-specific CTL in an in vivo mouth by introducing a minus-strand RNA virus vector.
- FIG. 23 is a view showing a growth curve of B16 melanoma cells inoculated subcutaneously.
- FIG. 24 is a view showing a result of 51 Cr-releasing assay of YAC-1 target cells.
- FIG. 25 shows the results of a 51 Cr-releasing assay of TRP2 peptide + EL-4.
- the present invention provides a method for producing a dendritic cell into which a gene has been introduced using a minus-strand RNA virus vector.
- This method comprises a step of contacting a minus-strand RNA virus vector carrying a desired gene to be introduced with a dendritic cell or its precursor cells.
- the present inventors have found that a minus-strand RNA virus vector can introduce a gene into dendritic cells with extremely high efficiency. Moreover, the introduction of the vector activated the dendritic cells and allowed them to differentiate into mature dendritic cells without stimulating with cytoplasm. Obtained Mature dendritic cells retained the ability to activate ⁇ cells.
- the method of the present invention is useful for presenting desired antigens to dendritic cells, or for expressing desired cytokins or other bioactive factors in dendritic cells.
- the dendritic cells that have been genetically modified by the method of the present invention have a high ability to activate the immune system, and can be used for infectious diseases, cancers, and other diseases in which a beneficial effect can be expected by immunity induction. It can be suitably used in prevention and treatment.
- the contact between the vector and the dendritic cells can be performed in vivo or in vitro, for example, in a desired physiological aqueous solution such as a culture solution, physiological saline, blood, plasma, serum, or body fluid.
- the efficiency of transfection of the minus-strand RNA virus vector is significantly higher when the dendritic cells are in the inactivated state (immature state) than for mature dendritic cells. Therefore, it is preferable that the minus-strand RNA virus vector is brought into contact with immature dendritic cells or mixed with a cell fraction containing immature dendritic cells. Such a method is also included in the method of the present invention for introducing a gene into dendritic cells. Dendritic cells are activated by contact with bacteria or lipopolysaccharide (LPS), double-stranded RNA, and the like.
- LPS lipopolysaccharide
- the capillaries may be introduced after activation, but the introduction efficiency of the vector is not reduced. Therefore, it is preferable to perform the activation operation after introducing the gene with the minus-strand RNA virus vector before the introduction of the vector (or simultaneously with contacting the minus-strand RNA virus vector with the dendritic cells).
- RNA virus vectors The high efficiency of gene delivery by simple techniques is one of the important advantages of gene delivery to dendritic cells via minus-strand RNA virus vectors.
- Gene delivery to dendritic cells via retrovirus vectors or the like is inefficient and may require toxic agents such as polypropylene during gene transfer.
- a minus-strand RNA virus vector superior gene delivery could be achieved by simply adding the vector to a solution containing dendritic cells without requiring a special drug.
- gene delivery to dendritic cells via minus-strand RNA viral vectors was able to achieve optimal efficiency with very short exposures (less than 30 minutes).
- the MOI multiple infectivity; the number of infectious viruses per cell
- the MOI is preferably between 1 and 500, more preferably 2 to 300, and even more preferably 2 to 300. It is preferably 3-200, more preferably 5-100, and even more preferably 7-70.
- a short time is sufficient for contacting the vector with the filamentous cell, for example, 1 minute or more, preferably 3 minutes or more, 5 minutes or more, 10 minutes or more, or 20 minutes or more. It may be about 60 minutes, or more specifically, about 5 minutes to 30 minutes.
- the contact may be carried out for a longer time, for example, for several days or more.
- Contacting can be performed inside or outside the body.
- the method of the present invention can be suitably used in ex vivo gene transfer in which a filamentous cell or its precursor cell removed from the body is contacted with a minus-strand RNA virus vector outside the body, and the vector is returned to the body after the transfer.
- One of the features of the method of the present invention is that the expression of the transgene is maintained for a long period of time after the gene is introduced into the dendritic cells.
- the vector is infected with dendritic cells for 2 days or more, for example, for 3 days or more, 5 days or more, 10 days or more, 14 days or more, 30 days or more, 50 days or more, and more than 60 days or more. Then, the expression of the transgene is detected in the transfected cells.
- the present invention also relates to a method for selectively introducing a gene into an immature dendritic cell, wherein the negative-strand RNA virus vector carrying the gene is used for immature dendritic cells and mature dendritic cells. And coexisting in a cell population comprising: Selective for immature dendritic cells means that genes are introduced into immature dendritic cells at a significantly higher rate than mature dendritic cells, and at a higher rate. In other words, the percentage of immature dendritic cells into which the vector was introduced in all immature dendritic cells was significantly greater than the percentage of adult dendritic cells into which the vector had been introduced in all mature dendritic cells. high.
- the present invention provides a method comprising the step of adding a minus-strand RNA virus vector carrying a gene to be introduced into a cell population containing immature and mature dendritic cells. Since a minus-strand RNA virus vector preferentially introduces a gene into an immature dendritic cell as compared to a mature dendritic cell, this method can selectively introduce a gene into an immature dendritic cell. These methods are also included in the method of the present invention for introducing a gene into dendritic cells.
- Dendritic cells are denatured cells! A cell that has the ability to present and activate T cells.
- the dendritic cells are separated from a group of cells having a dendritic form derived from bone marrow cells distributed in various tissue organs in vivo and stem cells derived from bone marrow or blood using cytodynamics or the like in vitro. It includes a group of cells equivalent to dendritic cells distributed in tissue organs in a living body subjected to a dani induction.
- the dendritic cells include, for example, lymphoid dendritic cells (which may induce Th2 induction or immune tolerance), myeloid dendritic cells (generally used dendritic cells).
- Dendritic cells including immature and mature dendritic cells), Langerhans cells (important dendritic cells in skin antigen presenting cells), interconnected cells (lymphocyte, spleen, T cell area It is thought to work in antigen presentation! / Pull cells), follicular cells (important as antigen-presenting cells to B cells, antigen-antibody complex, antigen-complement complex as antibody Presents antigens to B cells by presenting them on dendritic cells by receptors and complement receptors.), And preferably, highly expresses MHC class I and class II. And more preferably, cells expressing CD1 lc.
- the dendritic cells have a dendritic morphology and are selected from the group consisting of CDllc, HLA-class II (HLA-DR, -DP, or -DQ), CD40, and CDla. Cells with two or more of the surface markers may be positive. In the present invention, the ⁇ cells are more preferably
- HLA-class 11+ and CDllc + cells more preferably CDla +, HLA-class II + and CDllc + cells, and T cell markers (CD3), B cell markers (CD19, CD20), NK cell markers (CD56), These cells do not express the neutrophil marker (CD15) or monocyte marker (CD14).
- the ratio of CD14 + in the dendritic cell population used for introducing the vector is, for example, 10% or less, preferably 5% or less, and more preferably 1% or less.
- the dendritic cells include mature dendritic cells and immature dendritic cells.
- Immature dendritic cells refer to dendritic cells with low T cell activation ability.
- immature dendritic cells have an antigen-presenting ability of less than 1/2, preferably less than those of dendritic cells induced to mature by adding LPS (1 micro-g / ml) and culturing for 2 days. It may be less than 1/4.
- the antigen-presenting ability may be determined, for example, by the ability to activate T-cells (mixed lymphocyte test; mixed culture of T-cells and dendritic cells; the ratio of T cells to dendritic cells is 1:10, preferably Is a culture obtained by changing the ratio, and 8 hours before the end of the culture, 3 H-thymidine was added to Quantification of T cell proliferative ability based on the amount of vesicles incorporated into DNA: see FIG. 21; Literature Gene Therapy 2000; 7; 249-254), or specific cytotoxic T cells (CTL) using peptides.
- T-cells mixed lymphocyte test; mixed culture of T-cells and dendritic cells; the ratio of T cells to dendritic cells is 1:10, preferably Is a culture obtained by changing the ratio, and 8 hours before the end of the culture, 3 H-thymidine was added to Quantification of T cell proliferative ability based on the amount of vesicles incorporated into DNA: see FIG
- IL-2 was obtained at 25 U / ml, preferably 100 U / ml) (preferably stimulated with dendritic cells three times for 21 days, more preferably stimulated twice with dendritic cells for 14 days).
- Effector cells were used to target 51 Cr-labeled target cells (peptide-restricted Class I-positive tumor cells) to 20: 1, 10: 1, 5: 1, 2.5: 1, preferably 100: 1, 50: 1, 25: 1, 12.5: 1 with those that have been quantified in for 4 hours cocultures 51 Cr liberating amount of the target cells; see FIG. 22; Document Arch Dermatol Res 2000; 292; 325-332 ) by a constant It can be.
- immature dendritic cells preferably have antigen phagocytic activity, and more preferably have low expression of a receptor that induces costimulation for T cell activation (for example, mature DCs induced by LPS as described above). Some ⁇ are negative).
- mature dendritic cells refer to dendritic cells that have high antigen-presenting ability for T cell activation and the like. Specifically, mature dendritic cells should have at least half, preferably equal to or more than the antigen-presenting ability of dendritic cells induced to mature by adding LPS (1 micro-g / ml) and culturing for two days. May be a cell having the ability to present antigen.
- the mature dendritic cells preferably have low or no antigen phagocytic ability, and more preferably have high expression of a receptor that induces a costimulation for T cell activation.
- Activation of dendritic cells refers to the transition from immature dendritic cells to mature dendritic cells, and activated dendritic cells include mature dendritic cells and activated dendritic cells. Mid-cell dendritic cells that increase the expression of CD80 and CD86 that induce costimulation are included in this category. Among CDllc-positive dendritic cells, CD83-positive is an indicator of mature dendritic cells.
- the mature dendritic cells may be cells that are strongly positive for the expression of CD40, CD80, CD86 and HLA-class II. More preferably, mature dendritic cells express CD83.
- immature and mature dendritic cells can be distinguished based on a marker selected from the group consisting of CD80, CD83, and CD86. These markers are weak, or preferably negative, in immature dendritic cells and positive in mature dendritic cells.
- immature dendritic cells usually maintain high phagocytic activity!
- LPS 1 micro-g / ml
- dendritic cells are activated and phagocytic ability is reduced.
- the phagocytic ability can be determined by measuring the amount of small molecules taken up into the dendritic cells or the ratio of the cells taken up.
- the phagocytic ability is determined by the amount of the small molecule incorporated into the dendritic cells.
- the incorporation of beads into dendritic cells can be measured using colored beads of about 1 micro-m. Quantify by subtracting the background that is positive at 4 ° C.
- High phagocytosis means that the uptake of small molecules into dendritic cells is more than four times that of dendritic cells stimulated with LPS (1 micro-g / ml) for 2 days as described above.
- the phagocytic ability is more preferably 5 times or more, more preferably 6 times or more.
- the ratio of the small molecule-incorporating cells is 2 times or more, more preferably 3 times or more.
- Low phagocytosis means that the uptake of small molecules into dendritic cells is less than 4 times, more preferably less than 2 times, more preferably less than that of dendritic cells stimulated with LPS (1 micro-g / ml) for 2 days. Is less than 1.5 times. Alternatively, it is less than 2-fold, more preferably less than 1.5-fold, as measured by the percentage of cells that take up the small molecule.
- CDllc is an adhesion glycoprotein (pl50, integrin alpha chain) of about 150 kD. It has been reported that CDllc binds to CD18 to form a CDllc / CD18 complex, has binding ability to fibrinogen, and serves as a receptor for iC3b and ICAM-1. It has also been reported that CDllc / CD18 can act as an adhesion molecule that binds to receptors on stimulated epithelium (Knapp, W.
- CDla is a polypeptide of about 49 kD and binds to beta 2 microglobulin. CDla is structurally similar to the MHC class I antigen and is considered to function in antigen presentation (Knapp, W. et al., Eas., 1989, Leucocyte Typing IV: White and ell Differentiation Antigens, Oxford University Press, New York; Scnlossman, S. et al., Eds., 199b, Leucocyte Typing V: White Cell Differentiation Antigens.Oxford University Press, New York; Hanau, D. et al., 1990, J. Investigative Dermatol. 95: 503 ; Calabi, F. and A. Bradbury., 1991., Tissue Antigens 37: 1).
- CD14 is a 53-55 kD glycosylphosphatidylinositol (GPI) -anchored single-chain glycoprotein, which is expressed in reticulum cells and certain Langerhans cells.
- CD14 was identified as a high affinity surface receptor for the complex of LPS and serum LPS binding protein (LPB) (McMichael, AJ et al., Eds., 1987, Leucocyte Typing III: White Cell Differentiation Antigens, Oxford University Press, New York; Knapp, W. et al., Eds., 1989, Leucocyte Typing IV: White Cell Differentiation Antigens, Oxford University Press, New York; Schlossman, S. et al "eds., 1995, Leucocyte Typing V: White Cell Differentiation Antigens. Oxford University Press, New York; Wright, SD et al "1990, Science 249: 1434) 0
- CD40 is a 45-48 kD type I integral membrane glycoprotein, and an anti-CD40 antibody is often used as a cell marker (Schlossman, S. et al., Eds., 1995, Leucocyte Typing V: White Cell Differentiation Antigens. Oxford University Press, New York; Galy, AHM; and H. Spits, 1992, J. Immunol. 149: 775; Clark, EA and JA Ledbetter, 1986, Proc. Natl. Acad. Sci. 83: 4494; Itoh, H. et al "1991, Cell 66: 233; Barclay, NA et al” 1993, The Leucocyte Antigen Facts Book., Academic Press).
- CD80 is a transmembrane glycoprotein of about 60 kD and a member of the Ig supergene family.
- CD80 is a ligand for CD28 and CD152 (CTLA-4) expressed on T cells (Schlossman, S. et al., Eas., 1995, Leucocyte Typing V: White Cell Differentiation Antigens. Oxford University Press, New York; Schwarts , RH, 1992, Cell 71: 1065; Azuma, M. et al., 1993, J. Exp. Med. 177: 845; Koulova, L. et al., 1991, J. Exp. Med. 173: 759; Freeman, GJ et al "1998, J. Immunol.
- CD83 is a transmembrane protein of about 45 kD and is a member of Ig superfamily. CD83 has a short-chain V-type Ig extracellular domain and a C-terminal cytoplasmic tail. CD83 is mainly interdigitating between follicular cells, circulating cells, and lymphoid tissue, and is produced in vitro. Expressed in dendritic cells and thymic dendritic cells (Zhou, LJ., And TF Tedder, 1995, J. Immunol. 154. 3821; Zhou, LJ. Et al., 1992, J. Immunol. 149: 735; Summers KL et al "1995, Clin Exp. Immunol. 100: 81; Weissman, D. et al" 1995, Proc. Natl. Acad. Sci USA. 92: 826; Hart, DNJ, 1997, Blood 90: 3245).
- CD86 (B70 / B7-2) is a cell surface protein of approximately 75 kD, a second ligand of CD28 and CTLA-4, which plays a key role in T cell costimulation in the early immune response (Azuma M. et al. al "1993, Nature 366: 76; Nozawa Y. et al., 1993, J. Pathology 169: 309; Engle, P. et al. 1994., Blood 84: 1402; Engel, P. et al" CD86 Workshop Report .
- Azuma M. et al. al "1993, Nature 366: 76; Nozawa Y. et al., 1993, J. Pathology 169: 309; Engle, P. et al. 1994., Blood 84: 1402; Engel, P. et al" CD86 Workshop Report .
- Azuma M. et al. al "1993, Nature 366: 76; Nozawa Y. et al., 1993
- CCR7 is a seven-transmembrane G protein-coupled receptor, also called BLR-2, EBI-1, and CMKBR7, and CC chemokines MIP-3beta / Exodus 3 / ELC / CCL19 and
- HLA-class II includes DR, DP, and DQ, and can be comprehensively detected by an antibody that binds to all of them (Pawelec, G. et al., 1985, Human Immunology 12: 165; Ziegler , A. et al., 1986, Immunobiol. 171: 77).
- HLA-DR is a transmembrane glycoprotein that is one of the human class II antigens of MHC and also has alpha chain (36 kDa) and beta subunit (27 kDa). It is co-expressed with the CDla antigen in epidermal Langernoun cells. CDla plays a major role in cell interactions in antigen presentation (Barclay, NA et al., 1993, The Leucocyte Antigen Facts Book. P. 376. Academic Press).
- dendritic cells can be identified using homologous gene products of the above marker genes as indices.
- Antibodies to these markers can be obtained from, for example, BD Biosciences (BD PharMingen), and details thereof can be found on the website of the company or a distributor.
- a positive rate is determined to be 1% or less as a boundary, more than that is positive, and less than that is negative.
- the dendritic cells or their precursor cells can be prepared according to a known method or in accordance therewith.
- blood eg, peripheral or umbilical cord blood
- bone marrow e.g., lymph nodes, other lymphoid organs, spleen, skin, etc.
- dendritic cells are obtained from blood or bone marrow for use in the present invention.
- the dendritic cells used in the present invention are, for example, Langer's nonsense cells of skin, veil cells of imported lymphatic vessels, follicular dendritic cells, dendritic cells of spleen, and finger-like cells of lymphoid organs. Is also good.
- the dendritic cells used in the present invention include CD34 + -derived dendritic cells, bone marrow-derived dendritic cells, monocyte-derived dendritic cells, splenocyte-derived dendritic cells, skin-derived dendritic cells, follicular dendritic cells, And germinal center ⁇ -shaped cells.
- CD34 + -derived dendritic cells are derived from hematopoietic stem cells or hematopoietic progenitors obtained from cord blood or bone marrow.
- G-CSF Severe factor
- GM-CSF granulocyte macrophage colony stimulating factor
- TNF tumor necrosis factor
- IL-4 tumor necrosis factor
- IL-13 stem self-actor
- Flt-3 ligand Flt-3 ligand
- peripheral blood monocytes can be differentiated into immature dendritic cells by GM-CSF and IL-4, and then stimulated with TNF-alpha to be converted into mature dendritic cells. .
- dendritic cells can be enriched by removing these cells using an antibody specific to T cells, NK cells, B cells, and the like. Specifically, for example, it is preferable to obtain cells in which the expression of a surface marker selected from CD2, CD3, CD8, CD19, CD56, CD66b or any combination thereof is low or negative. More preferably, all of CD2, CD3, CD8, CD19, CD56, and CD66b are low or negative cells. For this purpose, cells expressing these markers may be removed using antibodies against these markers (Hsu et al. (1996) Nature Med. 2:52). The negative selection can be performed using a multivalent antibody as described in this example, or using beads or the like for magnetic cell separation (MACS).
- MCS magnetic cell separation
- cells are adjusted to a large amount, for example, by collecting mononuclear cells using blood cell separation or the like, it is preferable to use beads.
- cell-shaped cells obtained from a living body are enriched with monocytes, and negative cells are subjected to negative selection to prepare these cells, which can be suitably used in the present invention.
- the efficiency of vector introduction may decrease.
- the dendritic cells used in the present invention are not limited to these, but immature dendritic cells.
- Cell culture prior to contact with the minus-strand RNA virus vector involves the step of selecting cells attached to a solid support (eg, a culture dish or a culture vessel such as a bottle) so as not to reduce the proportion of cells. Preferably not. That is, the present invention provides such a method that does not include a step of selecting cells adhered to a solid support within 24 hours before contact between the minus-strand RNA virus vector and the dendritic cells. More preferably, the method does not include the step of selecting cells attached to the solid support within 2, 3, 5, or 7 days prior to contacting the minus-strand RNA virus vector with the dendritic cells. I'll do it.
- the method does not include a step of selecting CD14 + cells before contacting the minus-strand RNA virus vector. That is, the present invention provides a method that does not include the step of selecting CD14 + cells within 24 hours before the contact of the minus-strand RNA virus vector with the dendritic cells. More preferably, the method does not include the step of selecting CD14 + cells within 2, 3, 5, or 7 days prior to the implantation of the minus-strand RNA inores vector and the fibrous itoidum. Then,
- CD34 + cells and mononuclear cells derived from peripheral blood can be obtained from bone marrow, cord blood, or peripheral blood May be performed using the method described in Van Tendeloo et al., 1998, Gene Ther. 5: 700-707.
- dendritic cells or their precursor cells eg, CD1 lc + cells or
- a minus-strand RNA virus vector with a cell fraction containing CD34 + cells at a high concentration.
- Progenitor cells are defined as appropriate cytokins (ie, G-CSF, GM-CSF, TNF-alpha, IL-4, IL-13, SCF, Fit-3 ligand, c-kit ligand, or a combination thereof).
- cytokins ie, G-CSF, GM-CSF, TNF-alpha, IL-4, IL-13, SCF, Fit-3 ligand, c-kit ligand, or a combination thereof.
- cells preferably within 4 weeks, more preferably within 20 days, more preferably within 18 days, more preferably within 16 days. It is a cell that can be divided into cells.
- Such cells include CD34 + stem cells.
- Differentiation into dendritic cells can be performed, for example, by culturing for about 3 days in the presence of SCF (50 ng / ml), GM-CSF (500 U / ml), and TNF-alpha (50 ng / ml).
- SCF 50 ng / ml
- GM-CSF 500 U / ml
- TNF-alpha 50 ng / ml
- / ml GM-CSF
- IL-4 250 U / ml
- TNF-alpha 50 ng / ml
- the cell fraction is a cell population obtained by separating (or fractionating) cells.
- the cell fraction may be a composition comprising the cells and a pharmaceutically acceptable carrier.
- the carrier examples include a desired solution in which living cells can be suspended, such as physiological saline, phosphate buffered saline (PBS), culture solution, and serum.
- the cell fraction used for contacting the vector may be a percentage of dendritic cells and Z or its precursor in all living cells, for example, 30% or more, preferably 40% or more, preferably 50% or more, It is preferably at least 60%, preferably at least 70%.
- the immature cells contacted with the minus-strand RNA virus vector include immature i-cells.
- the cell fraction containing dendritic cells mixed with the vector is the percentage of immature dendritic cells in all living cells, for example, 10% or more, preferably 20% or more, more preferably 30% or more, and more preferably 40%. It is at least 50%, more preferably at least 60%, more preferably at least 70%.
- the method of the present invention using a minus-strand RNA virus has various advantages. For example, if a minus-strand RNA virus is used, activated dendritic cells can be obtained only by infection with the vector, and the subsequent step for obtaining mature dendritic cells can be omitted. In order to use dendritic cells for immunostimulation, activation is necessary. There are benefits. Also, by utilizing this property, activated T cells necessary for T cell transfer therapy, particularly cytotoxic T cells, etc., can be efficiently induced in a short period of time in vitro.
- minus-strand RNA virus vector When a minus-strand RNA virus was introduced, CTLs could not be induced in dendritic cells, and CTLs were induced in vitro only by gene transfer of other vectors due to the properties reported in other vectors. It is difficult. Therefore, the minus-strand RNA virus vector has an advantage that T cells can be activated (CTL induction) only by introducing one vector (see FIG. 22).
- minus-strand RNA virus vectors are all vectors that combine high transfection efficiency, stability of gene transfer, simplicity, safety, and retention of T cell activation ability of dendritic cells. Are better.
- the minus-strand RNA virus vector is also useful when the fibrous cells are divided after the gene is introduced into stem cells.
- the minus-strand RNA virus vector is transduced into stem cells and then induced to differentiate into dendritic cells, the gene transfer efficiency approaches 70%. This is comparable to modified versions of retroviral and lentiviral vectors. Since the expression of adenovirus vector decreases due to dilution of episome after introduction, it is difficult to introduce the gene from stem cells.
- Negative-strand RNA virus can be applied to both a method of performing dendritic cell differentiation after introduction into stem cells and a method of introducing a gene into dendritic cells differentiated from peripheral blood mononuclear cells.
- the minus-strand RNA virus vector has a high MOI (for example, 10 or more, preferably 20 or more, more preferably 30 or more, for example, 40 or more, and even 50 or more). It is possible to stably transfect cells with almost 100% transfection efficiency without influence. Furthermore, since a minus-strand RNA virus does not integrate a gene into the host genome, it has the advantage of reducing the risk of tumor development and the like.
- a minus-strand RNA virus is a virus containing, as a genome, minus-strand (antisense strand to sense strand encoding a viral protein) RNA.
- Minus strand RNA is also called negative strand RNA.
- the minus-strand RNA virus used in particular is a single-strand minus-strand RNA virus (non-segmented (
- Single-stranded negative-strand RNA virus refers to single-stranded negative-strand (ie, negative-strand) RNA in the genome.
- Such viruses include Paramyxoviridae (including Paramyxoviridae; Paramyxovirus, Morbilnvirus, Rubulavirus, and Pneumovirus J3 ⁇ 4), Hubuto Winores (including Rhabdovindae; Vesiculovirus, Lyssavirus, and Epnemerovirus spp.), Filouiroe (Filoviridae) Oronomyxoviridae (including Orthomyxoviridae; Inluluenza virus A, B, C, and Thogoto-like viruses, etc.)
- Bunyavindae including Bunyavirus, Hantavirus, Nairo virus, and Phlebovirus genus? Includes viruses belonging to families such as Arenaviridae.
- a minus-strand RNA virus vector is a virus particle having infectivity based on a minus-strand RNA virus, and is a carrier for introducing a gene into cells.
- the term "infectivity” refers to the ability of a minus-strand RNA virus vector to maintain its ability to adhere to cells and to introduce the gene contained in the vector into the adhered cells.
- the minus-strand RNA virus vector of the present invention is incorporated into genomic RNA of one vector so that the foreign gene can be expressed.
- the minus-strand RNA virus vector of the present invention may be a transmissible or non-transmissible defective vector. "Transmissible" means that when a viral vector infects a host cell, the virus is replicated in the cell and infectious virus particles are produced.
- the recombinant virus refers to a virus produced via a recombinant polynucleotide or an amplification product of the virus.
- a recombinant polynucleotide is a polynucleotide that is not linked at both or one end in the same manner as in its natural state.
- a recombinant polynucleotide is a polynucleotide in which the binding of a polynucleotide chain has been modified (cleaved and / or bound) by a human hand.
- the recombinant polynucleotide can be produced by a known gene recombination method by combining polynucleotide synthesis, nuclease treatment, ligase treatment and the like.
- a recombinant virus can be produced by expressing a polynucleotide encoding a viral genome constructed by genetic engineering and reconstructing the virus. For example, a method for reconstituting a virus from cDNA encoding a viral genome is known (Y. Nagai, A. Kato, Microbiol. Immunol, 43, 613-624 (1999)).
- a gene refers to genetic material, and refers to a nucleic acid containing a transcribed sequence in sense or antisense.
- the gene may be RNA or DNA.
- a nucleic acid encoding a protein is called a gene of the protein.
- the gene may not encode a protein.
- the gene may encode a functional RNA such as ribozyme or antisense RNA.
- the gene may be a naturally occurring or artificially designed sequence.
- “DNA” includes single-stranded DNA and double-stranded DNA.
- encoding a protein means that the polynucleotide contains, in sense or antisense, an ORF encoding the amino acid sequence of the protein so that the polynucleotide can express the protein under appropriate conditions.
- the minus-strand RNA virus preferably used in the present invention includes, for example, Sendai Winores of Paramyxoviridae (Paramyxoviridae) Winores, Newcastle disease virus, Newcastle disease virus, (Mumps virus), Macheles virus , 2,3 type, orthomyxoviridae
- Sendai virus SeV
- HPIV-1 human parainfluenza virus-1
- HPIV-3 human parainfluenza virus-3
- PDV canine dis
- Sendai virus SeV
- human parainfluenza virus-1 HPIV-1
- human parainfluenza virus-3 HPIV-3
- phocine distemper virus PDV
- canine distemper virus CDV
- dolphin molbillivirus DMV
- PDPR ruminants virus
- MV measles virus
- RPV rinderpest virus
- Hendra virus Hendra
- Nipah virus Nipah virus
- a virus belonging to the subfamily Paramyxoviridae including the genera Respirovirus, Rubravirus, and Morbillivirus
- a virus belonging to the genus Respirovirus genus
- Respirovirus also called Paramyxovirus
- Derivatives include viruses in which the virus gene has been modified so as not to impair the gene transfer ability by the virus, and viruses in which the gene has been chemically modified.
- respirovirus of the genus to which the present invention can be applied examples include human parainfluenza virus type 1 (HPIV-1), human parainfluenza virus type 3 (HPIV-3), and paraparainfluenza virus type 3 (BPIV- 3), Sendai virus (also referred to as mouse parainfluenza virus type 1), and salparainfluenza virus type 10 (SPIV-10).
- paramyxovirus is most preferably a Sendai virus. These viruses may be derived from natural strains, wild strains, mutant strains, laboratory passages, artificially constructed strains, and the like.
- the minus-strand RNA virus vector encodes a borne RNA as an antisense gene.
- Genomic RNA is RNA that has the function of forming ribonucleoprotein (RNP) with viral proteins of minus-strand RNA virus, which expresses a gene in the genome and replicates this RNA to form daughter RNP. It is.
- RNP ribonucleoprotein
- the genome of a minus-strand RNA virus has a structure in which viral genes are arranged as an antisense sequence between a 3 'leader region and a 5' trailer region.
- RNA encoding the ORF of each gene is separated into separate cistrons. Is transcribed as
- the genes encoding the viral proteins of the minus-strand RNA virus include NP, P, M, F, HN, and L genes.
- NP, P, M, F, HN, and L genes refer to genes encoding nucleocapsid, phospho, matrix, fusion, hemagglutin-neuraminidase, and large proteins, respectively.
- Each gene in each virus belonging to the subfamily Noramyxovirus is generally represented as follows. In general The NP gene is sometimes described as “N gene”.
- accession number of the database of the base sequence of each gene of Sendai virus is M29343, M30202, M30203, M30204, M51331,
- MCT65, M69046, X17218, P gene M30202, M30203, M30204, M55565, M69046, X00583, X17007, X17008,
- M gene D11446, K02742, M30202, M30203, M30204, M69046, U31956, X00584, X53056, F gene D00152, D11446, D17334, D17335, M30202, M30203, M30204, M69046, X00152, X02131, HN gene D26475, M12397, M30202, M30203, M30204, M69046, X00586, X02808, X56131, L gene D00053 , M30202, M30203, M30204, M69040, X00587, X58886.
- viral genes encoded by other viruses include CDV, AF014953; DMV, X75961; HPIV-1, D01070; HPIV-2, M55320; HPIV-3, D10025; Mapuera, X85128; Mumps, D86172; MV, K01711; NDV, AF064091; PDPR,
- the ORFs encoding these viral proteins and the ORF of the foreign gene are placed in genomic RNA in an antisense manner via the EIS sequence described above.
- the ORF closest to the genomic RNA! Only requires the S sequence between the 3 'leader region and the ORF, and does not require the E and I sequences.
- the ORF closest to 5 ′ requires only the E sequence between the 5 ′ trailer region and the ORF, and does not require the I and S sequences.
- the two ORFs can also be transcribed as the same cistron using a sequence such as IRES. In such cases, there is no need for an E-to-S sequence between these two ORFs.
- RNA genome has a 3 'leader region followed by six ORFs encoding N, P, M, F, HN, and L proteins in antisense order.
- ORFs encoding the N, P, M, F, HN, and L proteins in antisense order.
- the arrangement of the viral genes is not limited to this, but it is preferable that the N, P, M, F, HN , And the ORFs encoding the L proteins are preferably arranged in order, followed by a 5 ′ trailer region.
- the power of different viral genes Even in such a case, it is preferable to arrange the respective viral genes in the same manner as in the wild type as described above.
- vectors carrying the N, P, and L genes autonomously express genes from the RNA genome in cells, and genomic RNA is replicated.
- the functions of the genes encoding the envelope proteins such as the F and HN genes and the M gene form infectious virus particles that are released outside the cells. Therefore, such a vector is a virus vector having a transmitting ability.
- a foreign gene to be introduced into a dendritic cell may be inserted into a non-protein coding region in the genome, as described later.
- the minus-strand RNA virus vector of the present invention may be one lacking any of the genes of the wild-type virus.
- viral vectors containing the M, F, or HN genes, or a combination thereof can also be suitably used in the present invention.
- Reconstitution of such a viral vector can be performed, for example, by exogenously supplying a defective gene product.
- the virus vector thus produced adheres to the host cell and causes cell fusion similarly to the wild-type virus.However, the vector genome introduced into the cell has a defect in the viral gene. No daughter virus particles with the same infectivity are formed. For this reason, it is useful as a safe virus vector having a one-time gene transfer capability.
- the gene to be deleted from the genome include the F gene and the Z or HN gene.
- a plasmid expressing a recombinant minus-strand RNA virus vector genome deficient in the F gene is transfected into host cells together with an F protein expression vector and NP, P, and L protein expression vectors. Vectors can be reconstructed (WO00 / 70055 and WO00 / 70070; Li, H. — 0. et al., J. Virol. 74 (14)
- a virus can be produced using a host cell in which the F gene has been integrated into the chromosome. Even if the amino acid sequence of these proteins is not a virus-derived sequence, if the activity in nucleic acid introduction is equal to or higher than that of the natural type, mutations or homologous genes of other viruses can be introduced. Substitute with a little.
- a vector containing a protein different from the envelope protein of the virus from which the vector genome is derived can be prepared.
- a viral vector having a desired envelope protein can be produced by expressing in a cell an envelope protein other than the envelope protein encoded by the viral genome as the base of the vector.
- a desired protein that can infect cells is used.
- envelope proteins of other viruses for example, G protein (VSV-G) of vesicular stomatitis virus (VSV) can be mentioned.
- the VSV-G protein may be from any VSV strain.
- the vector of the present invention can contain any combination of envelope proteins derived from other viruses.
- an envelope protein derived from a virus that infects human cells is suitable as such a protein.
- a protein is not particularly limited, and examples thereof include a retrovirus amphoteric picken envelope protein.
- an envelope protein derived from mouse leukemia virus (MuLV) 4070A strain can be used.
- MuMLV 10A1 for example, pCL-10Al (Imgenex) (Naviaux, RK et al., J. Virol.
- the proteins of the family include, for example, gB, gD, gH, and gp85 proteins of the simple herpes virus, the gp350 and gp220 proteins of the EB virus, and the proteins of the hepadnavirus family include the S virus of the hepatitis B virus. These proteins may be used as a fusion protein in which the extracellular domain is linked to the intracellular domain of the F protein or the HN protein, and thus used in the present invention.
- Viral vectors include pseudotyped viral vectors that contain an envelope protein derived from a virus other than the virus from which the genome is derived, such as the VSV-G protein. If these envelope proteins are designed in RNA so that they are not encoded in the genome, the viral vector will not be expressed after viral particles infect cells.
- the viral vector used in the present invention may be, for example, a protein such as an adhesion factor, a ligand, or a receptor capable of adhering to a specific cell on the surface of an envelope, an antibody or a fragment thereof, or a cell containing these proteins. It may contain a chimeric protein or the like having a polypeptide derived from a virus envelope in an intracellular region, which is contained in an outer region. Thereby, the specificity of the vector for dendritic cells can be controlled. These may be encoded in the viral genome or may be supplied during expression of the viral vector by expression of a gene other than the viral genome (eg, another expression vector or a gene located on the host chromosome). Is also good.
- a protein such as an adhesion factor, a ligand, or a receptor capable of adhering to a specific cell on the surface of an envelope, an antibody or a fragment thereof, or a cell containing these proteins. It may contain a chimeric protein or the like having a
- viral vectors are used, for example, to reduce immunogenicity caused by viral proteins.
- any viral gene contained in the vector may be modified from a wild-type gene in order to increase the efficiency of transcription or replication of RNA.
- HN protein one of the envelope proteins, has both hemagglutinin and neuraminidase activities, which are hemagglutinins. If the activity of the former can be reduced, for example, It will be possible to improve the stability of the virus in it, and it is also possible to modulate infectivity, for example by modifying the activity of the latter.
- the membrane fusion ability can be regulated by modifying the F protein. Also, for example, by analyzing antigen presentation epitopes of F protein and / or HN protein that can be an antigen molecule on the cell surface, and using this to produce a virus vector with reduced antigen presentation ability for these proteins.
- the minus-strand RNA virus vector may be one in which an accessory gene is deleted.
- knocking out the V gene, one of the accessory genes for SeV significantly reduces the virulence of SeV to hosts such as mice without impairing gene expression and replication in cultured cells (Kato, A. et al., 1997, J. Virol.
- Attenuated vectors are particularly useful as non-toxic viral vectors for gene transfer in vivo or ex vivo.
- Negative-strand RNA virus is an excellent gene transfer vector, transcribes and replicates only in the cytoplasm of the host cell, and has no DNA phase. Therefore, integration into the chromosome (integration) does not occur.
- minus-strand RNA virus greatly contributes to the safety when vectorized.
- Sendai virus Sendai virus
- a transmissible SeV vector can introduce a foreign gene up to at least 4 kb, and can simultaneously express two or more genes by adding a transcription unit.
- the Sendai virus is not pathogenic to rodents, which are pathogenic to rodents and known to cause pneumonia. This has also been supported by previous reports that nasal administration of wild-type Sendai virus has no serious adverse effects in non-human primates (Hurwitz, JL et al., Vaccine 15 : 533-540, 1997). These characteristics of Sendai virus suggest that Sendai virus vector is applicable to human therapy and conclude that Sendai virus vector is one of the promising options for gene therapy targeting human dendritic cells. is there.
- a viral vector may encode a foreign gene in genomic RNA.
- a recombinant virus vector containing a foreign gene can be obtained by inserting the foreign gene into the genome of the above-mentioned virus vector.
- a desired gene to be expressed in a target ⁇ cells can be used.
- the foreign gene may be a gene encoding a native protein, or may be a gene encoding a protein obtained by modifying a native protein by deletion, substitution or insertion.
- the insertion position of the foreign gene can be selected, for example, at a desired site in the protein non-coding region of the viral genome.For example, each position between the 3 ′ leader region of the genomic RNA and the viral protein ORF closest to the 3 ′ end can be selected.
- a nucleic acid encoding a foreign gene can be inserted into the deleted region.
- a foreign gene is introduced into Noramixovirus, it is desirable to insert the foreign gene into the genome in a multiple of the chain length ⁇ of the polynucleotide of the inserted fragment (Journal of Virology, Vol. 67, No. 8, 4822). -4830, 1993).
- An EIS sequence is constructed between the inserted foreign gene and the viral ORF. Be done. Two or more genes can be inserted in tandem via the E-S sequence.
- the expression level of a foreign gene carried on a vector can be regulated by the type of transcription initiation sequence added upstream of the gene (3 'side of the negative strand) (
- the expression level can be controlled by the insertion position of the foreign gene on the genome, and the expression level increases as the insertion position is closer to 3 'of the negative strand. Becomes lower.
- the insertion position of the foreign gene can be appropriately adjusted in order to obtain a desired expression level of the gene and to optimize the combination with the gene encoding the preceding and succeeding viral proteins.
- the foreign gene it is preferable that the foreign gene be linked to a highly efficient transcription initiation sequence and inserted near the 3 ′ end of the negative strand genome. Specifically, it is inserted between the 3 ′ leader region and the viral protein ORF closest to 3 ′.
- the viral protein gene closest to the 3 ′ is the N gene and the second gene is the P gene.
- the insertion position of the foreign gene in the vector should be set to the 5 'side of the negative strand, or the transcription initiation sequence should be less efficient.
- a mammalian genomic RNA is prepared in mammalian cells in the presence of viral proteins necessary for reconstitution of RNP, a component of the virus, ie, N, P, and L proteins. Transcribe the encoding cDNA.
- the viral RNP can be reconstituted whether transcription produces a negative strand genome (ie, the same antisense strand as the viral genome) or a positive strand (the sense strand encoding the viral protein).
- a positive strand is preferably generated. It is preferred that the RNA ends reflect the ends of the 3 'leader sequence and the 5' trailer sequence exactly as well as the natural viral genome.
- RNA polymerase may be used to express the RNA polymerase in cells.
- a self-cleaving ribozyme can be encoded at the 3 ′ end of the transcript so that the 3 ′ end can be cut out accurately by this ribozyme ( Hasan, MK et al, J.
- the DNA sample can be identified as a single plasmid by electrophoresis at a concentration of 25 ng / micro-L or more.
- the Notl recognition site is included in the target cDNA base sequence, the base sequence is modified by using a site-directed mutagenesis method, etc., so that the encoded amino acid sequence is not changed, and the Notl site is changed. It is preferable to remove them in advance. From this sample, the target gene fragment is amplified by PCR and collected.
- both ends of the amplified fragment are used as Notl sites.
- Notl sites include the E-to-S sequence in the primer so that the E-to-S sequence is located between the ORF of the foreign gene after insertion into the viral genome and the ORF of the viral gene on both sides. design.
- the forward synthetic DNA sequence does not include any 2 or more nucleotides (preferably a sequence derived from a Notl recognition site such as GCG and GCC) on the 5 'side to ensure cleavage by Notl. (4 bases, more preferably ACTT), a Notl recognition site gcggccgc is added to its 3 'side, and any 9 bases or a multiple of 6 is added to 9 as a spacer sequence on its 3' side. And a sequence corresponding to about 25 bases of the ORF, including the initiation codon ATG of the desired cDNA, is added to the 3 'side.
- a sequence corresponding to about 25 bases of the ORF, including the initiation codon ATG of the desired cDNA is added to the 3 'side.
- any two or more nucleotides are selected from the 5 'side, A Notl recognition site gcggccgc is added to the 3 ′ side, and an oligo DNA of an inserted fragment for adjusting the length is added to the 3 ′ side.
- the length of this oligo DNA is designed so that the base length of the Notl fragment of the final PCR amplification product is a multiple of 6 (see the so-called “rule of six” J; Kolakofski, D. et al, J. Virol. 72: 891-899, 1998; Calain, P. and Roux, L., J. Virol. 67: 4822-4830, 1993; Calain, P. and Roux, L., J. Virol. 67: 4822-4830, 1993.
- EIS sequence is added to this primer, the complementary strand of the S, I, and E sequences of Sendai virus is added to the 3 'end of the oligo DNA of the inserted fragment.
- Sequences preferably 5'-CTTTCACCCT-3 '(SEQ ID NO: 1), 5'-AAG-3', and 5'-TTTTTCTTACTACGG-3, respectively (SEQ ID NO: 2) Codon force at the 3 'end of the desired cDNA sequence Select the length so that the last base of the complementary strand corresponding to about 25 bases, counted in reverse, is G or C, add the sequence, and add the reverse side synthetic DNA. 3 'end of
- PCR For PCR, an ordinary method using Taq polymerase or another DNA polymerase can be used.
- the amplified target fragment is digested with Notl and inserted into the Notl site of a plasmid vector such as pBluescript. Confirm the nucleotide sequence of the obtained PCR product with a sequencer and select a plasmid with the correct sequence.
- the insert is excised from this plasmid with Notl and cloned into the Notl site of the plasmid containing the genomic cDNA. It is also possible to obtain a recombinant Sendai virus cDNA by inserting it directly into the Notl site of the genomic cDNA without using a plasmid vector.
- a recombinant Sendai virus genomic cDNA can be constructed according to the method described in the literature (Yu, D. et al "Genes Cells 2: 457-466, 1997; Hasan, MK et al”). J. Gen. Virol. 78: 2813-2820, 1997).
- an 18 bp spacer sequence (5 ′-(G) -CGGCCGCAGATCTTCACG-3 ′) having a Notl restriction site (SEQ ID NO: 3) can be used as a leader for a closed Sendai virus genomic cDNA (pSeV (+)).
- a plasmid pSeV18 + b (+) containing a self-cleaving ribozyme site derived from the hepatitis delta virus antigenomic strand is inserted between the sequence and the ORF of the N protein (Hasan, MK et al. al., 1997, J. General Virology 78: 2813-2820).
- a foreign gene fragment into the Notl site of pSeV18 + b (+)
- a recombinant Sendai virus cDNA having the desired foreign gene integrated therein can be obtained.
- the DNA encoding the genomic RNA of the recombinant virus thus prepared is transcribed in the cell in the presence of the above-mentioned viral proteins (L, P, and N), whereby the virus vector can be reconstituted. it can.
- the present invention provides a minus-strand RNA virus vector for introduction into dendritic cells.
- the present invention also relates to the use of a minus-strand RNA virus vector in the production of a dendritic cell into which a gene has been introduced, and the use of a minus-strand RNA virus vector in the production of a mature astrocyte.
- the present invention provides a DNA encoding a viral genomic RNA of a minus-strand RNA virus vector for producing a minus-strand RNA virus vector for introducing a dendritic cell.
- the present invention also relates to the use of a DNA encoding a genomic RNA of the vector of the present invention for application to the production of the vector. Reconstitution of the recombinant virus can be performed using a known method (
- RNA viruses including parainfluenza, vesicular stomatitis virus, rabies virus, measles virus, Linda pest virus, Sendai virus, etc. can be reconstituted from DNA.
- the vector of the present invention can be reconstituted according to these methods.
- the virus does not form an infectious virus particle as it is, but these deleted genes and / or Infectious virus particles can be formed by separately introducing and expressing genes encoding the envelope protein of another virus into cells.
- the specific procedure is as follows: (a) cDNA encoding negative-strand RNA virus genomic RNA (negative-strand RNA) or its complementary strand (positive-strand) is transformed into cells expressing N, P, and L proteins. Transcription, and (b) collecting the culture supernatant containing the generated minus-strand RNA virus. For transcription, DNA encoding genomic RNA is ligated downstream of a suitable promoter.
- Transcribed genomic RNA is replicated in the presence of N, L, and P proteins to form an RNP complex. Then, in the presence of the M, HN, and F proteins, enveloped virus particles are formed.
- DNA encoding genomic RNA is ligated, for example, downstream of the T7 promoter, and transcribed into RNA by T7 RNA polymerase.
- T7 RNA polymerase any desired promoter can be used other than those containing a recognition sequence for T7 polymerase.
- RNA transcribed in vitro may be transfused into cells.
- Enzymes such as T7 RNA polymerase, required for the initial transcription of genomic RNA from DNA can be supplied by the introduction of a plasmid or viral vector expressing it, or, for example, the RNA
- the polymerase gene may be incorporated so that expression can be induced, and supplied by inducing expression at the time of virus reconstitution.
- Genomic RNA and viral proteins required for vector reconstitution are supplied, for example, by introducing a plasmid that expresses them.
- helper viruses such as wild-type or certain mutant minus-strand RNA viruses, to supply these viral proteins is an advantage.
- Methods for introducing genomic RNA-expressing DNA into cells include, for example, the following methods: (0 a method for preparing a DNA precipitate that can be taken up by a target cell, a method for GO uptake by a target cell) Suitable and low cytotoxicity! / ⁇ A method to create a complex containing DNA with positive charge characteristics. (Iii) Instantaneous electrical pulse through the target cell membrane with enough holes to allow DNA molecules to pass through. There is a way to open.
- transfusion reagents can be used.
- DOTMA Roche
- Superfect QIAGEN # 301305
- DOTAP @ DOPE DOSPER (Roche # 1811169) and the like
- the transfection method using calcium phosphate is mentioned, and DNA that has entered the cells by this method is a force that is taken up by phagocytic vesicles. Is also known to contain sufficient amounts of DNA (Graham, FL and Van Der Eb, J., 1973, Virology 52: 456; Wigler, M. and Silverstein, S "1977, Cell 11: 223). 0 Chen and Okayama studied the optimization of transfer technology. 1) Incubation conditions of cells and coprecipitate were 2-4% CO, 35 ° C, 15-24 hours. Ring shaped
- the method (iii) is a method called electroporation, which has high cell selectivity and is more versatile than the 0 or GO method.
- the efficiency is the pulse current duration, pulse It is said that it is good under the optimal conditions of shape, strength of electric field (gap between electrodes, voltage), conductivity of buffer, DNA concentration and cell density.
- the method (ii) is simple in operation and allows the use of a large number of cells to examine a large number of specimens.
- the transfusion reagent is suitable.
- Superfect Transfection Ragent QIAGEN, Cat No. 301305
- DOSPER Liposomal Transfection Reagent Roche, Cat No. 1811169
- Reconstitution of a virus from cDNA can be specifically performed, for example, as follows.
- the ratio of expression vectors encoding N, P, and L is preferably, for example, 2: 1: 2.
- the amount of plasmid is preferably, for example, 114 micro-g pGEM-N, 0.5-12 micron. — Adjust appropriately with pGEM-P of 1 g and 4 micro-g of pGEM-L.
- the cells subjected to the transfection are, if desired, 100 micro-g / ml of rifampicin (Sigma) and cytosine arabinoside (AraC), more preferably 40 micro-g / ml of cytosine ara pinoside (AraC) (Sigma).
- rifampicin Sigma
- AraC cytosine arabinoside
- DOTMA (Roche), Superfect (QIAGEN # 301305), DOTAP, DOPE, DOSPER (Roche # 1811169) and the like can be mentioned.
- cloquins can be added (Calos, MP, 1983, Proc. Natl. Acad. Sci. USA 80: 3015).
- the process of virus gene expression from RNP and RNP replication proceeds, and the vector is amplified.
- Vaccinia virus VTF7-3 can be completely removed by diluting the obtained virus solution (for example, 10 6 times) and repeating re-amplification. Re-amplification is repeated, for example, three times or more.
- the resulting vector can be stored at -80 ° C.
- a defective viral vector can be amplified by overlaying and culturing LLC-MK2 cells expressing the envelope protein on cells subjected to transfection (see International Publication No.
- the titer of the recovered virus can be determined, for example, by measuring CIU (Cell-Infected Unit) or measuring hemagglutination activity (HA) (WOOO / 70070; Kato, A. et al. , 199, Genes Cells 1: 569-579; Yonemitsu, Y. & Kaneda, Y., Hemaggulutinating virus of Japan— liposome— mediated gene delivery to vascular cells. Ed. By Baker AH. Molecular Biology of Vascular Diseases. Molecular Medicine: Humana Press: pp. 295-306, 1999).
- CIU Cell-Infected Unit
- HA hemagglutination activity
- the titer can be quantified by directly counting infected cells using the marker as an index (for example, as GFP-CIU).
- the titer measured in this way can be treated as equivalent to CIU (WOOO / 70070).
- the host cell used for reconstitution is not particularly limited.
- the host cell used for reconstitution is not particularly limited.
- monkey kidney-derived kidney-derived virus vector etc.
- Cultured cells such as LLC-MK2 cells and CV-1 cells, hamster kidney-derived BHK cells, and human-derived cells can be used. By expressing an appropriate envelope protein in these cells, infectious virus particles having the protein in the envelope can also be obtained.
- the virus vector obtained from the above host can be infected to embryonated chicken eggs to amplify the vector.
- a method for producing a viral vector using chicken eggs has already been developed (Nakanishi et al., Eds. (1993), "Advanced Technology Protocol for Neuroscience III, Molecular Neuronal Physiology", Kouseisha, Osaka, pp. L53-).
- a fertilized egg is placed in an incubator and cultured at 37-38 ° C for 9-12 days to grow an embryo.
- the viral vector is inoculated into the allantoic cavity, and the eggs are cultured for several days (eg, 3 days) to propagate the viral vector. Conditions such as the culture period may vary depending on the recombinant Sendai virus used.
- the urine fluid containing the virus is collected. Separation and purification of Sendai virus vector from urine fluid can be performed according to a conventional method (Masato Tashiro, "Virus Experiment Protocol", Nagai and Ishihama, Medical View, pp.68-73, (1995)) 0
- construction and preparation of a Sendai virus vector from which the F gene has been deleted can be performed as follows (see WO00 / 70055 and WO00 / 70070).
- the gene is ligated with, for example, atgcatgccggcagatga (SEQ ID NO: 4), and the F gene is deleted.
- a type SeV genomic cDNA (pSeV18 + / AF) is constructed.
- upstream of F [forward: 5-gttgagtactgcaagagc / Rooster column number: 5, reverse:
- the PCR product using the primer pair of 5'-tgggtgaatgagagaatcagcZ SEQ ID NO: 8] is ligated with EcoT22I.
- the thus obtained plasmid is digested with Sad and Sail, and a fragment (493 lbp) containing the F gene deletion site is recovered and cloned into pUC18 to obtain pUC18 / dFSS.
- This pUC18 / dFSS is digested with Dralll, the fragment is recovered, replaced with the Dralll fragment in the region containing the F gene of pSeV18 +, and ligated to obtain plasmid pSeV18 + / AF.
- the foreign gene is inserted, for example, into the restriction enzyme Nsil and NgoMIV sites at the F gene deletion site of pUC18 / dFSS.
- a foreign gene fragment may be amplified with an Nsil-tailed primer and an NgoMIV-tailed primer.
- a Cre / loxP-inducible expression plasmid that expresses the Sendai virus F gene (SeV-F)
- the SeV-F gene is amplified by PCR, and the gene product is amplified by Cre DNA recombinase.
- the plasmid pCALNdLw / F is constructed by inserting it into the unique site Swal site of the plasmid pCALNdlw (Arai, T. et al., J. Virology 72, 1998, plll5-11121) designed to be inducibly expressed.
- a helper cell line expressing SeV-F protein is established.
- the cells for example, monkey kidney-derived cell line LLC-MK2 cells, which are often used for the growth of SeV, can be used. LLC-MK2 cells were incubated at 37 ° C in MEM supplemented with 10% heat-treated immobilized fetal serum (FBS), penicillin G sodium 50 units / ml, and streptomycin 50 micro-g / ml. Incubate with 5% CO. SeV-F remains
- the above plasmid pCALNdLw / F designed to induce the expression of the F gene product by Cre DNA recombinase was used for the calcium phosphate method (.mammalian transfection kit (btratagene)). Introduce into LLC-MK2 cells.
- the plasmid into which the foreign gene of pSeV18 + / AF has been inserted is transfected into LLC-MK2 cells as follows. 5x10 LLC-MK2 cells. cells / dish Seed in a 100 mm petri dish. When genomic RNA is transcribed by T7 RNA polymerase, recombinant vaccinia virus expressing T7 RNA polymerase treated with psoralen and long-wave ultraviolet light (365 nm) for 20 minutes after cell culture for 24 hours (
- PLWUV-VacT7 Fuerst, T.R. et al, Proc. Natl. Acad. Sci. USA 83, 8122-8126 (1986)) and infect at about MOI 2 for 1 hour at room temperature.
- UV irradiation of vaccinia virus for example, UV Stratalinker 2400 (catalog number 400676 (100V), Stratagene, La Jolla, CA, USA) equipped with five 15-watt bulbs can be used.
- the plasmids expressing genomic RNA and the expression plasmids expressing N-, P-, L-, F-, and HN-proteins of minus-strand RNA virus, respectively were purified using appropriate lipofection reagents. Transfect the cells.
- the amount ratio of the plasmid is not limited to this, but may be preferably 6: 2: 1: 2: 2: 2 in order.
- plasmids expressing genomic RNA and expression plasmids expressing N, P, L, and F plus HN proteins pGEM / NP, pGEM / P, pGEM / L and pGEM / F-HN;
- WO00 / 70070 Kato, A. et al., Genes Cells 1, 569-579 (1996) were compared with 12 micro-g, 4 micro-g, 2 micro-g, 4 micro-g and 4 micro-gZ, respectively. Remove the transfer ratio of the dish. After culturing for several hours, wash the cells twice with serum-free MEM and add 40 micro-g / mL of ytosine ⁇ -D-arabinoluranoside (AraC: bigma, St. Louis, MO and 7.5).
- a viral gene-deficient vector for example, when two or more vectors having different viral genes on the viral genome contained in the vector are introduced into the same cell, the viral protein deficiency in each of them is reduced.
- Another vector Since they are supplied by their expression, virus particles that are complementary to each other and infectious are formed and undergo a replication cycle to amplify the viral vector. That is, when two or more vectors of the present invention are inoculated in a combination that complements the viral proteins, a mixture of the respective viral gene-deficient virus vectors can be produced in large quantities at low cost. Since these viruses lack the viral gene, the virus gene must be deleted, and the genome size is smaller than that of the virus and the foreign gene can be retained. In addition, V is not proliferative due to viral gene deficiency. These viruses are diluted extracellularly and are difficult to maintain co-infection.
- the foreign gene introduced by the minus-strand RNA virus is not particularly limited.
- natural proteins include hormones, cytokins, growth factors, receptors, intracellular signal molecules, enzymes, and peptides. Is mentioned.
- the protein can be a secreted protein, a membrane protein, a cytoplasmic protein, a nuclear protein, and the like.
- Artificial proteins include, for example, fusion proteins such as chimeric toxins, dominant negative proteins (including soluble receptor molecules or membrane-bound dominant negative receptors), deletion type cell adhesion molecules and cell surface components. And the like. It may also be a protein to which a secretion signal, a membrane localization signal, a nuclear localization signal, or the like has been added.
- the function of a specific gene can be suppressed by expressing an antisense RNA molecule or an RNA-cleavable ribozyme as a transgene.
- a viral vector is prepared using a gene for treating a disease as a foreign gene, gene therapy can be performed by administering this vector.
- the application of the virus vector of the present invention to gene therapy includes gene expression by direct administration and gene expression by indirect (ex vivo) administration. Thus, it is possible to express endogenous genes and the like, whose supply is insufficient, in dendritic cells.
- the method of the present invention can also be used as a gene therapy vector in regenerative medicine.
- viral vectors of the present invention example if 1 X 10 5 CIU / mL or more, preferably 1 X 10 6 CIU / mL or more, more preferably 5 X 10 6 CIU / mL or more, more preferably 1 X 10 7 CIU / mL or more, more preferably 5 X 10 7 CIU / mL or less
- the virus can be released into the extracellular fluid of virus-producing cells at a titer of more preferably 1 ⁇ 10 8 CIU / mL or more, more preferably 5 ⁇ 10 8 CIU / mL or more.
- the titer of the virus can be determined by the methods described herein and elsewhere (Kiyotani, K. et al, Virology 177 (1), 65-74 (1990); WO00 / 70070).
- the recovered virus vector can be purified to be substantially pure.
- the purification method can be performed by a known purification / separation method including filtration, centrifugation, adsorption, and column purification, or any combination thereof.
- substantially pure refers to the predominant proportion of the components of a vector in a solution containing the vector.
- the ratio of the protein contained as a component of the virus vector to the total protein contained in the solution is 10%.
- % (Weight / weight) or more preferably 20% or more, more preferably 50% or more, preferably 70% or more, more preferably 80% or more, and still more preferably 90% or more. .
- a paramyxovirus vector as a specific purification method, a method using cellulose sulfate or a crosslinked polysaccharide sulfate (Japanese Patent Publication No. 62-30752, Japanese Patent Publication No. 62-33879, and No. 62-30753), and a method of adsorbing to a sulfated-fucose-containing polysaccharide and / or a decomposition product thereof (WO97 / 32010).
- the vector in the production of a composition containing a vector, can be combined with a desired pharmacologically acceptable carrier or medium, if necessary.
- a “pharmaceutically acceptable carrier or vehicle” is a material that can be administered with a vector and does not significantly inhibit gene transfer by the vector.
- Such carriers or vehicles include, for example, deionized water, sterile water, sodium chloride solution, dextrose solution, dextrose and sodium salt, lactate-containing Ringer's solution, culture solution, serum, phosphate buffered saline. (PBS), etc., and these may be appropriately combined with a vector to form a pharmaceutical preparation. It may also contain a ribosome membrane stabilizer (for example, sterols such as cholesterol).
- compositions of the present invention may be in the form of an aqueous solution, capsule, suspension, syrup, and the like.
- the vector composition of the present invention may be a composition in the form of a solution, a lyophilized product, or an aerosol. In the case of a freeze-dried product, it may contain sorbitol, sucrose, amino acid, various proteins and the like as a stabilizer.
- the composition containing the vector of the present invention is useful as a reagent for introducing a gene into dendritic cells and as a drug used for gene therapy targeting dendritic cells.
- Vector solutions are also useful as vaccines (JI Mayordomo et al., Nature Med. 1 (12), 1279-1302, (1995)).
- the antigen peptide is expressed in dendritic cells by the vector of the present invention, the cells presenting this peptide can be used as a vaccine.
- the vaccine composition may also include an immunostimulant such as cytotoxic, cholera toxin, salmonella toxin, etc., to enhance immunogenicity.
- Vaccines include adjuvants such as myo-kun, incomplete Freund's adjuvant, MF59 (oil emulsion), MTP-PE (muramyl tripeptide from mycobacterial cell wall), and QS-21 (from soapbark tree Ouilaia saponaria). They can be combined.
- cytodynamic compounds that enhance the adjuvant effect.
- genes include, for example, i) a combination of IL-2 and single-stranded IL-12 (Proc. Natl. Acad. Sci. USA 96 (15): 8591-8596, 1999), ii) IL-2 and interferon- ⁇ (US Pat. No. 5,798,100), iii) Granulocyte colony stimulating factor (GM-CSF) used alone, iv) Combination of GM-CSF and IL-4 (J. Neurosurgery 90 (6), 1115-1124 (1999)).
- the antigen to be presented to the dendritic cells may be encoded by a minus-strand RNA virus vector, added to the dendritic cells into which the vector has been introduced (ie, pulsed), or expressed in another desired vector. Can be done.
- Antigens include desired antigens associated with infectious microorganisms, viruses, parasites, pathogens, cancer, and the like. These may be structural proteins or non-structural proteins. Such antigens (or their processed peptides) bind to MHC molecules on the surface of dendritic cells and are presented on the cell surface to induce an immune response.
- pathogen-derived antigens include hepatitis A virus, hepatitis B virus, hepatitis C virus, hepatitis delta virus, papilloma virus antigen, simple herpes virus (HSV), varicella-zoster virus (VZV) , Epstein-Barr virus, cytomegalovirus (CMV), HIV, and proteins or partial peptides of malaria.
- Minus-strand RNA viruses encoding these antigenic proteins can be used prophylactically and therapeutically.
- the envelope of the virulent strain H5N1 or the like and in the case of Japanese encephalitis, for example, the envelope protein of the Japanese encephalitis virus (Vaccine, vol. 17, No. 15-16, 1869-1882 ( In AIDS, for example, HIV gag or SIV gag protein (J. Immunology (2000) vol. 164,
- HIV envelope protein HIV envelope protein
- Nef protein HIV envelope protein
- other viral proteins HIV envelope protein
- cholera for example, the cholera toxin B subunit (CTB) (Arakawa T, et al, Nature Biotechnology (1998) 16 (10): 934-8, Arakawa T, et al, Nature Biotechnology (1998) 16 (3)
- CTB cholera toxin B subunit
- rabies for example, the rabies virus glycoprotein (Lodmell DL et al., 1998, Nature Medicine 4 (8): 949-52), and in cervical cancer, human papillomavirus type 6 Capsid protein LI (J. Med. Virol, 60, 200-204 (2000)).
- antigenic proteins of other pathogenic viruses can be expressed from vectors.
- JE-E antigen protein of Japanese encephalitis JP-A 64-74982, JP-A 1-2854978
- gD2 protein of human simple herpes virus JP-A 5-252965
- polypeptide derived from hepatitis C virus Japanese Unexamined Patent Publication (Kokai) No. 5-192160
- polypeptides derived from pseudorabies virus Japanese Patent Application Laid-Open No. 7-502173
- cells from patients infected with these pathogenic microorganisms may be analyzed to identify the epitope of the antigenic protein presented in antigen presenting cells (APC) and use this.
- APC antigen presenting cells
- a minus-strand RNA virus vector expressing one or more tumor antigens is introduced into dendritic cells, or a tumor antigen is added to dendritic cells activated with the minus-strand RNA virus vector.
- Pulse Tumor antigens on tumor cells It may be specific (ie, present in tumor cells but not present in non-tumor cells) or may be present at higher levels in tumor cells than non-tumor cells of the same type . The administration of these dendritic cells stimulates the immune system.
- CTL functions as a main effector, a desired tumor antigen expressed inside and outside a cell can be used as an antigen.
- tumor antigens expressed on the cell surface are preferred.
- cell surface receptors or cell adhesion proteins can be used.
- tumor antigens include Muc-1 or Muc-1-like mucin tandem repeat peptide (U.S. Pat. No. 5,744,144) that causes ovarian cancer, etc .; human papillomavirus proteins E6 and E7 that cause cervical cancer; melanoma antigens MART-1, MAGE-1, -2, -3, gplOO and tyrosinase, prostate cancer antigen PSA, CEA (Kim, C. et al., Cancer Immunol. Immunother. 47 (1998) 90-9 ), And Her2neu
- the dendritic cells prepared according to the present invention are useful in effective immunotherapy against cancer and infectious diseases, and can be used for dendritic cells into which genes of tumor antigens or infectious diseases-related antigens have been introduced or their dendritic cells Immunization with the stimulated T cells is an effective method for inducing antitumor or antiinfective immunity in patients.
- the present invention also relates to the use of dendritic cells obtained by the method of the present invention in inducing an immune response. That is, the present invention relates to the use of dendritic cells obtained by the method of the present invention in immunotherapy, specifically, for example, in the treatment of tumors or infectious diseases.
- the present invention also relates to the use of dendritic cells obtained by the method of the present invention for producing an immunostimulatory agent. That is, the present invention relates to the use of dendritic cells obtained by the method of the present invention in the production of an immunotherapeutic agent, specifically, for example, the production of an antitumor agent (tumor growth inhibitor) or an infectious disease therapeutic agent.
- an immunotherapeutic agent specifically, for example, the production of an antitumor agent (tumor growth inhibitor) or an infectious disease therapeutic agent.
- dendritic cell force also expresses cytodynamics, it stimulates the immune system, and Since it enhances an immune response to a substance or cancer, dendritic cells into which a gene encoding cytodynamic force is introduced are also useful for treating cancer and other diseases for which cytodynamic treatment is considered to be effective.
- Dendritic cells transfected with a minus-strand RNA virus vector carrying a gene encoding an immunostimulatory site force-in can be an effective immunity-inducing agent.
- interleukin eg, IL-lalpha, IL-lbeta, IL-2, IL-3, IL-4, IL-6, IL-7, IL-8, IL- 9, IL-10, IL-12, IL-15, IL-18, IL-19, IL-20, IL-21, IL-23, IL-27
- interferon eg, IFN-alpha, IFN-beta) , IFN-gamma
- TGF tumor necrosis factor
- TGF transforming growth factor
- TGF transforming growth factor
- G-CSF granulocyte colony stimulating factor
- M-CSF macrophage colony stimulating factor
- GM-CSF granulocyte macrophage colony stimulating Factor
- IGF insulin-like growth factor
- IGF insulin-like growth factor
- IGF insulin-like growth factor
- IGF insulin-like growth factor
- IGF insulin-like growth factor
- IGF insulin-like growth factor
- IGF insulin-like growth factor
- IL-4 for example, Arai et al. (1989), J. Immunol. 142 (1) 274-282
- IL-6 For example, Yasukawa et al. (1987), EMBO, 6 (10): 2939-2945
- IL-12 is, for example, Wolfe (1991), J. Immunol. 146 (9): 3074-3081
- IFN-alpha See, for example, Gren et al. (1984) J. Interferon Res. 4 (4): 609-617, and Weismann et al. (1982) Princess Takamatsu Symp.
- TNF refers to, for example, Pennica et al. (1984) Nature 312: 724-729
- G-CSF is, for example, Hirano et al. (1986) Nature 324: 73-76
- GM-CSF is, for example, Cantrell et al. (1985) Proc. Natl. Acad. Sci. (USA) 82 ( 18): 6250-6254.
- examples of the nucleic acid sequence encoding GM-CSF include a sequence containing the sequence 84-461 of Accession number NM_000758 (the amino acid sequence is positions 18-144 of NP_000749).
- nucleic acid sequence encoding IL-4 examples include a sequence containing the 443-829 sequence of Accession number NM_000589 (the amino acid sequence is 25-153 of NP_000580). Designing a vector containing a mutant gene that still encodes a functional site force-in by utilizing the natural gene encoding these site force-ins or the degeneracy of the genetic code, and introducing it into dendritic cells It comes out.
- genetic modification may be carried out so as to express these cytodynamic variants.
- cytodynamic variants For example, for cytokins that have two forms, precursor and mature (for example, those that generate an active fragment by cleaving a signal peptide or those that generate an active fragment by limited degradation of a protein) It may be genetically modified to express either the body or the mature form.
- Other variants eg, fusion proteins between the cytokin activity fragment and a heterologous sequence (eg, a heterologous signal peptide) may be used.
- dendritic cells into which a minus-strand RNA virus vector carrying the IFN-beta gene has been introduced activate cytotoxic T lymphocytes very strongly and are antigens. Significantly inhibits tumor growth. Since dendritic cells are activated by the introduction of the vector, there is no need to stimulate dendritic cells with toxic LPS or the like. Thus, dendritic cells transfected with the minus-strand RNA virus vector carrying the IFN-beta gene are promising therapeutic agents for anti-tumor immunotherapy.
- the IFN-beta gene is well known in many primates and mammals, including humans and mice.
- the human IFN-beta gene is SEQ ID NO: 12 (the mature polypeptide is SEQ ID NO: 21—187 of SEQ ID NO: 13).
- mouse IFN-beta include SEQ ID NO: 14 (the mature polypeptide is SEQ ID NO: 15 at positions 21-182) (Derynck, R. et al., Nature 285, 542-547 (1980); Higashi, Y. et al, J. Biol. Chem. 258, 9522-9529 (1983); Kuga, T. et al., Nucleic Acids Res. 17, 3291 (1989)).
- the signal peptide may be appropriately replaced with a signal sequence of another protein.
- the IFN-beta gene can be searched for by a homology search or the like based on the above-mentioned known IFN-beta cDNA and protein sequences (for example, BLAST; Altschul, SF et al., 1990, J. Mol. Biol. 215: 403-410). Alternatively, it can be obtained by RT-PCR using primers designed based on the known IFN-beta cDNA base sequence, or by hybridization under stringent conditions using IFN-beta cDNA as a probe. It is also easily obtained by screening human, mouse, rat, and other mammalian cDNA libraries.
- Hybridization conditions are based on the ability to prepare a probe from the nucleic acid containing the coding region of IFN-beta cDNA or the nucleic acid to be hybridized, and to detect whether it will hybridize to the other nucleic acid. Can be identified.
- the probe is usually a fragment of the nucleic acid and its length is usually 20 bases or more, Preferably it is 30 bases or more, more preferably 50 bases or more.
- Stringent hybridization conditions include, for example, 5X SSC (1X SSC contains 150 mM NaCl, 15 mM sodium citrate), 7% (W / V) SDS, 100 micro-g / ml denatured salmon sperm DNA, In a solution containing 5X Denhardt's solution (1X Denhardt's solution contains 0.2% polyvinylpyrrolidone, 0.2% bovine serum albumin, and 0.2% ficoll) at 48 ° C, preferably 50 ° C, more preferably 52 ° C And then at the same temperature as the hybridization, more preferably at 60 ° C, even more preferably at 65 ° C, most preferably at 68 ° C in 2X SSC, preferably IX SSC Medium, more preferably in 0.5 X SSC (eg, in 0.1 X SSC) for 2 hours with shaking.
- 5X SSC contains 150 mM NaCl, 15 mM sodium citrate), 7% (W / V) SDS, 100 micro-g
- the nucleotide sequence or amino acid sequence of mammalian IFN-beta includes a sequence having a high homology with a known sequence of IFN-beta (for example, a sequence corresponding to the mature protein of SEQ ID NOS: 12 to 15).
- a high homology refers to an identity (identity) of 70% or more, preferably 75% or more, more preferably 80% or more, more preferably 85% or more, more preferably 90% or more, and more preferably 95% or more. ).
- Sequence identity can be determined, for example, by the BLAST program (Altschul, S.F. et al., 1990, J. Mol. Biol. 215:
- the blastn program is used to determine the identity of the nucleotide sequence
- the blastp program is used to determine the identity of the amino acid sequence.
- the blastn program is used to determine the identity of the nucleotide sequence
- the blastp program is used to determine the identity of the amino acid sequence.
- o Parameter settings are, for example, open gap cost is 5 for nucleotides and protein is 11 for open gap, extend gap cost is 2 for nucleotides and 1 for protein, penemority for nucleotide mismatch is -3, nucleotide match Reward is 1, expect value is 10, wordsize is nucleotide 11 and protein is 2, Dropoff (X) for blast extensions in bits is 20 for blastn and 7 for other programs, X dropoff value for gapped alignment ( in Dits) i other than blastn, 15; final X dropoff value for gapped alignment (in bits) i blastn, 50 25 for In comparing amino acid sequences, BLOSUM62 can be used as a matrix for scoring.
- a blast2sequences program (Tatiana A et al. (1999) FEMS Microbiol Lett. 174: 247-250) that compares two sequences to create an alignment of the two sequences and determine sequence identity Can be. Gaps are treated in the same way as mismatches, ignoring gaps outside the IFN-beta mature protein coding sequence (CDS), and leaving the entire CDS of the IFN-beta mature protein (eg, SEQ ID NO: 12 at positions 64-561 or An identity value is calculated for the 14-64-546) or the entire amino acid sequence (eg, 22-187 of SEQ ID NO: 13 or 22-182 of SEQ ID NO: 15).
- CDS IFN-beta mature protein coding sequence
- IFN-beta There are polymorphisms and variants in IFN-beta.
- a variant in which activity equivalent to that of wild-type IFN-beta is maintained can be appropriately used.
- the activity equivalent to that of wild-type IFN-beta includes an antiviral activity, and can be measured by, for example, an activity of inhibiting the cytotoxicity caused by vesicular stomatitis virus.
- WISH cells C and L—25; AT and then.
- the cell death by virus is detected and the protection by IFN-beta is measured (measurement conditions are according to Knezic, Z., et al. (1993) Antiviral Res. 25, 215-221).
- The% inhibitory concentration is defined as 1 international unit (IU)
- the polypeptide having an antiviral activity equivalent to that of wild-type IFN-beta is preferably 1 ⁇ 10 6 IU / mg protein or more, more preferably 5 ⁇ 10 IU / mg protein or more.
- It shows a specific activity of 10 6 IU / mg protein or more, more preferably 1 ⁇ 10 7 IU / mg protein or more, and a polypeptide having an antiviral activity equivalent to that of wild-type IFN-beta is preferably wild-type IFN-beta. -Shows antiviral activity with specific activity of 1/10 or more of beta.
- Polymorphisms and variants of IFN-beta are generally obtained by substituting or deleting one or more residues in the nucleotide sequence or amino acid sequence of a certain IFN-beta molecular species (for example, SEQ ID NO: 12 to 15). , And / or inserted sequences.
- the difference from the known IFN-beta sequence is usually within 30 residues, preferably within 20 residues, preferably within 10 residues, more preferably within 5 residues, more preferably within 3 residues, more preferably Is within 2 residues.
- Amino acid substitutions may be conservative substitutions. Conservatively substituted proteins tend to maintain their activity.
- Conservative substitutions include, for example, basic amino acids (eg, lysine, arginine, histidine), Acidic amino acids (eg, aspartic acid, glutamic acid), uncharged polar amino acids (eg, glycine, asparagine, glutamine, serine, threonine, tyrosine, cysteine), non-polar amino acids (eg, alanine, norin, leucine, isoleucine, proline, phen- Substitutions between amino acids in each group such as lanalanine, methionine, tryptophan), ⁇ -branched amino acids (eg, threonine, palin, isoleucine), and aromatic amino acids (eg, tyrosine, phenylalanine, tryptophan, histidine).
- Basic amino acids eg, lysine, arginine, histidine
- Acidic amino acids eg, aspartic acid, glutamic acid
- examples of the IFN-beta gene include the nucleic acids described below.
- SEQ ID NO: 12 at positions 64 to 561, SEQ ID NO: 14 at positions 64 to 546, or a sequence comprising a complementary sequence thereof, and SEQ ID NO: 13 to 22 to 187 or SEQ ID NO: 15 to 22 to 182 A nucleic acid that encodes a polypeptide comprising the sequence of the second aspect.
- nucleic acid that hybridizes under stringent conditions with a nucleic acid fragment of SEQ ID NO: 12 at positions 64 to 561 or SEQ ID NO: 14 at positions 64 to 546, or a wild type IFN.
- nucleic acid comprising a sequence having a high homology with SEQ ID NO: 12 at positions 64 to 561, SEQ ID NO: 14 at positions 64 to 546, or a wild-type IFN-beta; A nucleic acid encoding a polypeptide having equivalent activity.
- nucleic acid comprising a sequence having a high homology to positions 22 to 187 of SEQ ID NO: 13 or positions 22 to 182 of SEQ ID NO: 15, and encoding a polypeptide having activity equivalent to that of wild-type IFN-beta.
- the dendritic cells genetically modified with the minus-strand RNA virus vector are useful for stimulating the patient's own T cells in vivo, or the genetically modified dendritic cells can transform the T cells in vitro. It is also useful for stimulating. Sensitized T cells can also be administered to a patient to stimulate the patient's immune system via Etas Vivo immunotherapy.
- the present invention relates to a method for producing T cells stimulated by dendritic cells, wherein (a) contacting a minus-strand RNA virus vector with dendritic cells or their precursor cells, (b) the cells And (c) contacting the mature dendritic cell with a T cell.
- the antigen to be presented by the dendritic cells may be a protein expressed from a vector (or a processed product thereof), or may be pulsed from outside to the dendritic cells.
- the dendritic cells into which the minus-strand RNA virus vector has been introduced activate T cells and induce CTLs.
- the present invention also relates to a method for stimulating an immune system using dendritic cells produced by the method of the present invention.
- a treatment for stimulating the immune system can be performed on a patient suffering from an infectious disease or cancer.
- This method comprises a step of administering dendritic cells or T cells. Specifically, (a) a step of administering to a patient a therapeutically effective amount of a dendritic cell into which a minus-strand RNA virus vector has been introduced, or (b) a step in which a minus-strand RNA virus vector has been introduced. Administering to the patient a therapeutically effective amount of T cells stimulated by the cells.
- the minus-strand RNA virus vector may be free of foreign genes or may have a gene encoding one or more of disease-associated antigens or cytokines.
- Negative-strand RNA virus vector activates dendritic cells by infecting dendritic cells, so that even dendritic cells that have no foreign gene and have been infected with a vector can activate the patient's immune system. It can be converted. A more effective dendritic cell can be obtained by pulsing the dendritic cell with an antigen peptide to present a desired antigen.
- T cells and dendritic cells are brought into contact in vitro, it is preferable to collect T cells and administer etas vivo to patients.
- the dose of the vector in vivo varies depending on the disease, the patient's body weight, age, sex, symptoms, administration purpose, form of administration composition, administration method, transgene, and the like. It is possible to decide.
- the administration route can be appropriately selected, and for example, may be percutaneous, intranasal, transbronchial, intramuscular, intraperitoneal, intravenous, intraarticular, or subcutaneous. Administration can be local or systemic.
- Vector administered is preferably about 10 5 CIU / ml to about 10 u CIU / ml, more preferably about 10 7 CIU / ml to about 10 9 CIU / ml, most Preferably it is preferable to administer an amount in the range of about 1 X 10 8 ClU / ml force about 5 X 10 8 CIU / ml in a pharmaceutically acceptable carrier.
- the preferred dose per dose is 2 x 10 5 CIU-1 x 2 x 10 11 CIU, with a single dose or multiple doses within the range of clinically acceptable The same applies to the number of administrations of.
- the above doses can be administered in terms of the weight ratio of the target animal to humans or the volume ratio of the target site for administration (for example, the average value).
- an RNA-dependent RNA polymerase inhibitor can be administered. Another advantage is that it specifically inhibits the propagation of the viral vector without damaging the host.
- the vector is brought into contact with the dendritic cell outside the body (for example, in a test tube or a petri dish).
- the MOI is preferably between 1 and 500, more preferably between 2 and 300, even more preferably between 3 and 200, even more preferably between 5 and 100, even more preferably between 7 and 70.
- the vector administration targets for example, birds, including birds, mammals, and mammals, such as birds, birds, mice, rats, dogs, pigs, cats, birds, birds, birds, egos, sheep, sheep, goats, monkeys, and humans Animals (human and non-human mammals), and other vertebrates.
- the dendritic cells into which the vector has been introduced are administered, they can be generally injected intramuscularly, intraperitoneally, subcutaneously or intravenously, or by direct injection into the lymph nodes. It is preferably administered to patients by subcutaneous, intraperitoneal injection or direct infusion into lymph nodes.
- the transduced dendritic cells can generally administer 10 5 to 10 9 cells, preferably 10 6 to 10 8 cells, more preferably about 10 7 cells to the patient.
- Dendritic cells into which the minus-strand RNA virus vector has been introduced are useful as antitumor agents.
- tumor growth can be suppressed by administering a vector-introduced filamentous cell to a tumor site.
- the tumor site refers to a tumor or an area around the tumor (for example, within 5 mm, preferably within 3 mm from the tumor).
- Vectors can be expected to have antitumor effects even if they do not carry foreign genes, but higher effects can be obtained by carrying IFN-beta genes in vectors. A higher effect can be obtained by contacting the dendritic cells with a tumor antigen before administering the dendritic cells to the tumor.
- Antitumor effects can also be obtained by injecting IFN-beta or a vector carrying the IFN-beta gene directly into a tumor.
- a minus-strand RNA virus vector carrying the IFN-beta gene is excellent as an antitumor agent.
- the T cells When administering T cells activated by dendritic cells, for example, the T cells are about 10 5 to 10 9 cells, preferably 10 6 to 10 9 cells per 1 m 2 of body surface area, It can be administered by intravenous infusion, more preferably at a dose of 10 8 -10 9 cells (see Ridell et al., 1992, Science 257: 238-241). Infusion can be repeated at desired intervals (eg, monthly). Post-administration recipes may be monitored during or after T-cell infusion for any side effects as needed. At this time, it is preferable that the T cells have the same patient strength as the patient who obtained the ⁇ cells.
- the T cells can also be harvested from the patient and the dendritic cells used to stimulate the T cells can be from a healthy HLA-compatible donor.
- dendritic cells may be collected from patients and T cells may be derived from HLA-compatible healthy donors!
- Cells containing ⁇ cells which are the active ingredients of the vaccine produced according to the present invention, are inoculated as a therapeutic vaccine into the human body, and thus it is safer if the cell proliferation is eliminated.
- ⁇ cells which are the active ingredients of the vaccine produced according to the present invention
- the proliferative capacity of cord blood-derived monocytes is extremely reduced by induction, but heat treatment, radiation treatment, or mitomycin C is necessary for safe use as a cell vaccine. It is possible to eliminate the proliferation property by treating it with a treatment, etc., while retaining the function as a vaccine.
- irradiation can be performed at a total radiation dose of 1000-3300 Rad.
- dendritic cells can be supplemented with 25-50 micro-g / ml mitomycin C and incubated at 37 ° C for 30-60 minutes.
- heat treatment can be performed at 50 to 65 ° C for 20 minutes.
- Monocytes were enriched by negative selection from healthy subjects.
- GM-CSF 500 U / ml
- IL-4 250 U / ml
- DCs were prepared.
- half of the culture supernatant was replaced with a new culture solution having the same composition.
- CDl lc, HLA-class II (DR, DP, DQ) was positive, and that other lineage markers (CD3, CD56, CD19, CD15 and It was also confirmed that CD14) was not expressed (Fig. 1 and data not shown).
- the efficiency of vector introduction was examined. At this time, 90-98% of the living cells expressed DC markers (CDllc, HLA-class II (DR, DP, DQ)).
- the selection in this example can be carried out in the same manner by using magnetic beads coated with a force antibody using the above kit.
- a large number of cells such as by collecting mononuclear cells using blood cell separation or the like, it is preferable to use beads.
- GFP green fluorescent protein
- Sendai virus vector (SeV-GFP) (propagation type, WO00 / 70070) was infected with MOI, and changes in cell number, GFP expression, and costimulatory molecules expression over time were examined.
- MFI mean fluorescence intensity
- the MFI of GFP can be further increased by increasing the MOI to 100 (data not shown).
- the costimulatory molecules CD80 and CD86
- the maximum was observed at an overall MOI of 20 or more.
- the MOI did not change much between 1 and 20, but the MOI 50 tended to decrease slightly, but there was no significant difference (Fig. 6).
- DCs were infected with SeV-GFP at MOI 20 and GFP expression was examined over time using FACS. As a result, expression decreased (the number of cells also decreased) after 2 weeks, but expressed cells could be confirmed up to 2 months (Fig. 7).
- DCs are activated by infection with a minus-strand RNA virus vector. Therefore, gene transfer into DC using a minus-strand RNA virus vector can be applied to vaccines as clinical application. Administration can be performed in vivo or in vivo, but, for example, it is possible to maintain gene expression in the body for a long period of time by frequently administering DCs infected with the vector by in vivo administration.
- CD34-positive stem cells were isolated from human umbilical cord blood using CD34 microbeads (CD34> 90%), infected at MOIs 0, 10, and 100, and washed well. After adding SCF (50 ng / ml), GM-CSF (500 U / ml) and TNF-alpha (50 ng / ml) to RPMI + 10% FCS, and culturing for 3 days, SCF (50 ng / ml) was added. ml), GM-CSF (500 U / ml), IL-4 (250 U / ml), and TNF-alpha (50 ng / ml).
- DCs were infected with SeV-GFP at MOI 30 (3 days after infection, 1 day after infection, one group was stimulated with LPS), and the same group as in Experiment 1 was examined for phagocytic ability (1 micron -m Use PCV-RED latex-microspheres, bar graph minus background that is positive at 4 ° C).
- Monocyte-derived monocytes obtained by culturing for 7 days were cultured in a 12-well plate for 48 hours in order to examine the ability of the dendritic cells to generate force associated with the activation of dendritic cells by SeV. (8xl0 5 / 2ml / well: medium is X- vivol5 TM + 2% autologous serum + GM-CSF (500 U / ml) + IL- 4 (250 U / ml)), on cultured under the conditions of the following groups The values of TNF-alpha, IL-lbeta, IL-6 and IL-8 in Kiyonaka were measured by Luminex TM system. SeV infection was cultured at MOI 30 for 2 days.
- Allantoic fluid group Chicken egg serum (seV is not included), a suspension of SeV, with 60 micro-L added
- UV-SeV-GFP group A solution obtained by irradiating SeV-GFP solution with ultraviolet light and removing replication ability.
- SeV-GFP A group prepared by adding 60 micro-L to a SeV-GFP solution (replication-competent SeV) Result: Only dendritic cells transfected with GFP by replication-competent SeV It produced TNF-alpha, IL-1beta, and IL-6, and increased the production of IL-8 (FIG. 18). At this time, increased expression of CD40, CD80, CD83, CD86 and HLA-DR on dendritic cells
- the DCs were irradiated with 3000 rad, and then examined for their ability to activate T cells. (Dose-filled DCs and co-cultured with purified (CD3 +> 95%) aro or syngenic T cells for 3 days). Syngenic T cells were used as an indicator of the response to SeV-GFP.
- CD14 + cells were enriched from human peripheral blood (healthy donor of HLA-A0201) by the method described in A, and GM-CSF (500U) was prepared using X- vivo 15 TM (manufactured by Cambrex) + 2% autologous serum as a medium. / ml) and IL-4 (250 U / ml), and immature dendritic cells were prepared by adding casket (exchanging a half amount of medium once every 3-4 days). Divide the prepared immature ⁇ cells into the following 3 groups
- the cells were cultured in the presence of GM-CSF (500 U / ml) and IL-4 (250 U / ml).
- cytokinin cocktail (IL-1 ⁇ 50ng / ml, IL-6 500ng / ml, IFN-a 2500U / ml, TNF-alOOng / mU PGE2 20 micro-M)
- the dendritic cells were collected and pulsed with MART-1 peptide (EAAGIGILTV (SEQ ID NO: 9) (50 micro-g / ml; 3 hours), and the same peripheral cells as those from which healthy cells were collected were collected.
- Blood T The cells were concentrated by negative selection (CD3 +> 97%) and cultured for 7 days with peptide-pulsed three groups of dendritic cells (X- vivo 15 TM + 2% autologous serum). (Every half of the medium was replaced every 3-4 days or when the medium yellowed.
- T cells and ⁇ cells were mixed and cultured without IL-2, and IL-2 was removed from day 3) This was repeated twice, and cells were collected from each mixed culture and used as effector cells for the CTL assay.
- T2 cells T cell-B cell hybridoma obtained from HLA-A2 + human and TAP deficient cell line
- TAP transporter to class I
- these cells lack TAP (transporter to class I)
- they cannot induce peptides produced by degradation of cytoplasmic proteins into class I. Loaded, Class I expression occurs.
- This target was pulsed with a mutated MART-1 peptide (ELAGIGILTV (SEQ ID NO: 10)) (a T cell receptor recognition site that has no change with respect to the peptide used in the above stimulus has increased HLA-A2 binding)
- ELAGIGILTV a mutated MART-1 peptide
- GILGFVFTL a peptide as a third party
- CTL activity was determined by mixing and culturing at 20: 1, 10: 1, 5: 1 and 2.5: 1 for 4 hours.
- MART-1 was stimulated with DC (MARTI peptide +) and stimulated with T cells by DC of the above 3 groups. Although specific CTL cannot be induced, MART-1-specific CTLs could be induced by stimulating T cells in dendritic cells activated by force-in (currently the most potent method of dendritic cell therapy for tumor immunity) (pulse to target) Similar results were obtained when the MART-1 peptide used for stimulation was used instead of the mutant MART-1 peptide). When the dendritic cells transfected with SeV were used, the same level of CTL activity as the positive control was obtained (FIG. 22).
- dendritic cells when determined by CTL assay, dendritic cells were activated only by infection with SeV, and CTLs could be induced in vitro to the same level as dendritic cells activated by cytodynamics. . If SeV is used as a T cell activator, activation can occur along with the introduction of the target gene, eliminating the need to add an activation factor such as cytokines, thereby reducing cost, time, and cell viability. Contributes to the retention of
- bone marrow was collected from the femur of C57BL / 6 mice, and SpinSep TM, murine hematopoetic progenitor enrichmentcocktail (anti-CD5 antibody, anti-CD45R antibody, iHiCDllb antibody, iHiGr-1 antibody, anti-TER119 antibody, anti 7/4 After removing T cells using an antibody and StemCell technology), IL-4 and GM-CSF were added, and cultured for 1 week. Mice were inoculated subcutaneously (sc) in the abdomen on day 0 with 1 x lOVlOO micro-L of B16 melanoma cells.
- sc subcutaneously
- dendritic cells without activation stimulation, dendritic cells activated with LPS (LPS DC), or SeV-IFN ⁇ expressing SeV-GFP or mouse interferon 13
- LPS LPS
- the activated dendritic cells (SeV GFP DC or SeV IFN
- ⁇ cells were pulsed with a tumor antigen (tumor lysate by freeze and thaw of B16) to administer a force.
- a tumor antigen tumor lysate by freeze and thaw of B16
- dendritic cells cultured for 1 week as described above were infected with SeV-IFN ⁇ at ⁇ 40 and cultured for 8 hours.
- SeV-IFN j8 was infected at MOI 40 and cultured for 8 hours. Thereafter, these dendritic cells were collected, and 5xl0 5 to 5 cells were administered around the mouse tumor.
- NK NK
- spleens were excised from mice 7 days after the completion of three DC treatments for each of the above treatment groups, and effector cells were prepared. Using Yac-1 as a target, a 51 Cr release assay was performed.
- the remaining spleen cells used for the NK cell activation assay were used, and the cells cultured for 5 days together with the TRP-2 peptide, a B16 tumor antigen, were used as an effector.
- the cells were used as cells, co-cultured with mTRP-2 peptide-pulsed EL-4 target cells, and subjected to 51 Cr release assays. The percentage of specific 51 Cr release was calculated as follows.
- the vector of the present invention is suitably used for inducing protective immunity against infectious diseases such as viruses and bacteria, and for immunotherapy against cancer. Since dendritic cells have a high immunity-inducing effect, antigen-specific cellular immunity is induced by introducing a desired antigen gene or immunoreactive gene into dendritic cells by the method of the present invention. It will be possible to produce DC vaccines.
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AU2004286144A AU2004286144A1 (en) | 2003-11-04 | 2004-10-29 | Method for producing gene transferred dendritic cells |
CN2004800398193A CN1902312B (zh) | 2003-11-04 | 2004-10-29 | 制备导入了基因的树突细胞的方法 |
EP04793197A EP1690937B1 (en) | 2003-11-04 | 2004-10-29 | Method of constructing transgenic dendritic cell |
KR1020067010775A KR101279748B1 (ko) | 2003-11-04 | 2004-10-29 | 유전자 도입된 수상세포의 제조방법 |
JP2005515163A JPWO2005042737A1 (ja) | 2003-11-04 | 2004-10-29 | 遺伝子導入された樹状細胞の製造方法 |
US10/578,085 US20070269414A1 (en) | 2003-11-04 | 2004-10-29 | Method for Producing Gene Transferred Denritic Cells |
CA002544786A CA2544786A1 (en) | 2003-11-04 | 2004-10-29 | Method for producing gene transferred dendritic cells |
CA002571849A CA2571849A1 (en) | 2004-06-24 | 2005-04-28 | Anticancer agent containing dendritic cell having rna virus transferred thereinto |
AU2005257105A AU2005257105A1 (en) | 2004-06-24 | 2005-04-28 | Anticancer agent containing minus-strand RNA virus |
US11/630,532 US8889118B2 (en) | 2004-06-24 | 2005-04-28 | Anticancer agent containing dendritic cell having RNA virus transferred thereinto |
JP2006528383A JPWO2006001120A1 (ja) | 2004-06-24 | 2005-04-28 | マイナス鎖rnaウイルスを含む抗癌剤 |
AU2005257107A AU2005257107A1 (en) | 2004-06-24 | 2005-04-28 | Anticancer agent containing dendritic cell having RNA virus transferred thereinto |
CN2005800284040A CN101006172B (zh) | 2004-06-24 | 2005-04-28 | 包含导入了rna病毒的树突状细胞的抗癌剂 |
EP05736740A EP1775342A4 (en) | 2004-06-24 | 2005-04-28 | ANTITUM-AGENT WITH MINUS STRAND RNA VIRUS |
KR1020077001606A KR101270839B1 (ko) | 2004-06-24 | 2005-04-28 | Rna 바이러스가 도입된 수상세포를 포함하는 항암제 |
EP05737340A EP1775343A4 (en) | 2004-06-24 | 2005-04-28 | ANTICANCER AGENTS CONTAINING A DENDRITIC CELL IN WHICH RNA VIRUSES HAVE BEEN TRANSFERRED |
CA002571844A CA2571844A1 (en) | 2004-06-24 | 2005-04-28 | Anticancer agent containing minus-strand rna virus |
US11/630,522 US20080031855A1 (en) | 2004-06-24 | 2005-04-28 | Anticancer Agent Containing Minus-Strand Rna Virus |
PCT/JP2005/008124 WO2006001120A1 (ja) | 2004-06-24 | 2005-04-28 | マイナス鎖rnaウイルスを含む抗癌剤 |
JP2006528384A JP5296983B2 (ja) | 2004-06-24 | 2005-04-28 | Rnaウイルスが導入された樹状細胞を含む抗癌剤 |
PCT/JP2005/008175 WO2006001122A1 (ja) | 2004-06-24 | 2005-04-28 | Rnaウイルスが導入された樹状細胞を含む抗癌剤 |
KR1020077001605A KR20070028573A (ko) | 2004-06-24 | 2005-04-28 | 마이너스 가닥 rna 바이러스를 포함하는 항암제 |
HK07107738.5A HK1103418A1 (en) | 2003-11-04 | 2007-07-18 | Method for producing gene transferred dendritic cells |
HK08100566.6A HK1106794A1 (en) | 2004-06-24 | 2008-01-16 | Anticancer agent containing dendritic cell having rna virus transferred thereinto |
JP2013046159A JP2013151523A (ja) | 2004-06-24 | 2013-03-08 | Rnaウイルスが導入された樹状細胞を含む抗癌剤 |
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Also Published As
Publication number | Publication date |
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JP2012065652A (ja) | 2012-04-05 |
KR101279748B1 (ko) | 2013-07-04 |
EP1690937A1 (en) | 2006-08-16 |
US20070269414A1 (en) | 2007-11-22 |
CA2544786A1 (en) | 2005-05-12 |
EP1690937B1 (en) | 2012-10-17 |
CN1902312A (zh) | 2007-01-24 |
CN1902312B (zh) | 2011-02-23 |
EP1690937A4 (en) | 2007-01-03 |
HK1103418A1 (en) | 2007-12-21 |
KR20060125783A (ko) | 2006-12-06 |
AU2004286144A1 (en) | 2005-05-12 |
JPWO2005042737A1 (ja) | 2007-05-10 |
AU2004286144A2 (en) | 2005-05-12 |
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