WO1996040762A1 - Monocyte chemotactic protein-4 - Google Patents
Monocyte chemotactic protein-4 Download PDFInfo
- Publication number
- WO1996040762A1 WO1996040762A1 PCT/US1996/010087 US9610087W WO9640762A1 WO 1996040762 A1 WO1996040762 A1 WO 1996040762A1 US 9610087 W US9610087 W US 9610087W WO 9640762 A1 WO9640762 A1 WO 9640762A1
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- WIPO (PCT)
- Prior art keywords
- polypeptide
- mcp
- cells
- dna
- polynucleotide
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/52—Cytokines; Lymphokines; Interferons
- C07K14/521—Chemokines
- C07K14/523—Beta-chemokines, e.g. RANTES, I-309/TCA-3, MIP-1alpha, MIP-1beta/ACT-2/LD78/SCIF, MCP-1/MCAF, MCP-2, MCP-3, LDCF-1, LDCF-2
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/06—Antihyperlipidemics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/08—Antiallergic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
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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
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
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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
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- This invention relates to newly identified polynucleotides, polypeptides encoded by such polynucleotides, the use of such polynucleotides and polypeptides, as well as the production of such polynucleotides and polypeptides. More particularly, the polypeptide of the present invention is monocyte chemotactic protein-4 (MCP-4) . The invention also relates to inhibiting the action of such polypeptides.
- MCP-4 monocyte chemotactic protein-4
- MCP-1 monocyte chemotactic protein
- MCP-2 monocyte chemotactic protein
- MCP-3 monocyte chemotactic protein
- All of these proteins have been structurally and functionally characterized and have also been cloned and expressed.
- MCP-1 and MCP-2 have the ability to attract leukocytes (monocytes, and leukocytes)
- MCP-3 also attracts eosinophils and T__lymphocytes (Dahinderi, E. et al., J. Exp. Med., 179:751-756 (1994)) .
- human monocyte-specific attracting factor was purified from a glioma cell line and a monocytic cell line.' Matsushima, K. et al, J. Exp. Med., 169:1485-1490 (1989) .
- This factor was originally designated glioma-derived chemotactic factor (GDCF) and monocyte chemotactic and activating factor (MCAF) by Matsushima, et al.
- GDCF glioma-derived chemotactic factor
- MCAF monocyte chemotactic and activating factor
- MCP-1 monocyte chemotactic and activating factor
- Murine JE is highly similar to MCP-1.
- the MCP-1 protein is 62% identical to murine JE in a region of 68 shared N-terminal residues. It is widely accepted that JE and MCP-1 are species homologs.
- a method of suppressing tumor formation in a vertebrate by administering JE/MCP-1 has been disclosed in PCT application WO-92/20372, along with methods of treating localized complications of malignancies and methods of combatting parasitic infection by administering JE/MCP-1.
- Expression of the JE/MCP-1 protein in malignant cells was found to suppress the cells ability to form tumors in vivo.
- Human MCP-1 is a basic peptide of .76 amino acids with a predicted molecular mass of 8,700 daltons. MCP-1 is inducibly expressed mainly in monocytes, endothelial cells and fibroblasts. Leonard, E.J. and Yoshimura, T., Immunol. Today, 11:97-101 (1990) . The factors which induce this expression is IL-1, TNF or lipopolysaccharide treatment.
- MCP-1 has been modified to form a cytokine capable of directly inducing histamine release by basophils, (Bischoff, S.C. et al., J. Exp. Med., 175:1271-1275 (1992)) .
- MCP-l promotes the formation of leukotriene C4 by basophils pretreated with Interleukin 3, Interleukin 5, or granulocyte/macrophage colony-stimulating factor.
- MCP-l induced basophil mediator release may play an important role in allergic inflammation and other pathologies expressing MCP-l.
- Clones having a nucleotide sequence encoding a human monocyte chemotactic and activating factor reveal the primary structure of the MCAF polypeptide to be composed of a putative signal peptide sequence of 23 amino acid residues and a mature MCAF sequence of 76 amino acid residues. Furutani, Y.H. , et al, Biochem. Biophys. Res. Commu., 159:249-55 (1989) .
- the complete amino acid sequence of human glioma-derived monocyte chemotactic factor (GDCF-2) has also been determined. This peptide attracts human monocytes but not neutrophils. It was established that GDCF-2 comprises 7 * 6 amino acid residues.
- the peptide chain contains 4 half- cysteines, at positions 11, 12, 36 and 52, which create a pair of loops, clustered at the disulfide bridges.
- the MCP-l gene has been designated to human chromosome 17.
- MCP-l monocytic infiltration of the artery wall.
- Monocytes appear to be central to atherogenesis both as the progenitors of foam cells and as a potential source of growth factors mediating intimal hyperpla ⁇ ia.
- MCP-l may play an important role in the recruitment of mononuclear phagocytes during inflammation associated with rheumatoid arthritis and that synovial tissue macrophages are the dominant source of this cytokine.
- MCP-l levels were found to be significantly higher in synovial fluid from rheumatoid arthritis patients compared to synovial fluid from osteoarthritis patients or from patients with other arthritides. Koch, A.E., et al, J. Clin. Invest., 90:772-9 (1992).
- MCP-2 and MCP-3 are classified in a subfamily of proinflammatory proteins and are functionally related to MCP- 1 because they specifically attract monocytes, but not neutrophils. Van Damme, J. , et al, J. Exp. Med., 176:59-65 (1992) . MCP-3 shows 71% and 58% amino acid homology to MCP-l and MCP-2 respectively. MCP-3 is an inflammatory cytokine that regulates macrophage functions.
- hemolymphopoietic stem cells has been proposed in the treatment of cancer and hematological disorders. May studies demonstrate that transplantation of hematopoietic stem cells harvested from the peripheral blood has advantages over the transplantation of marrow-derived stem cells. Due to the low number of circulating stem cells, there is a need for induction of pluripotent marrow stem cell mobilization into the peripheral blood. Reducing the amount of blood to be processed to obtain an adequate amount of stem cells would increase the use of autotransplantation procedures and eliminate the risk of graph versus host reaction connected with allotransplantation. Presently, blood mobilization of marrow CD34 + stem cells is obtained by the injection of a combination of agents, including antiblastic drugs and G-CSF or GM-CSF.
- agents including antiblastic drugs and G-CSF or GM-CSF.
- Drugs which are capable of stem cell mobilization include IL-1, IL-7, IL-8, and NlP-l ⁇ . Both IL-1 and IL-8 demonstrate proinflammatory activity that may be dangerous for good engrafting. IL-7 must be administered at high doses over a long duration and MlP-lct: is not very active as a single agent and shows best activity when in combination with G-CSF.
- polypeptide of the present invention is of human origin.
- nucleic acid molecules encoding a polypeptide of the present invention including mRNAs, DNAs, cDNAs, genomic DNAs as well as analogs and biologically active and diagnostically or therapeutically useful fragments thereof.
- a process for producing such polypeptide by recombinant techniques comprising culturing recombinant prokaryotic and/or eukaryotic host cells, containing a nucleic acid sequence encoding a polypeptide of the present invention, under conditions promoting expression of said protein and subsequent recovery of said protein.
- agonists which mimic the polypeptide of the present invention and bind to receptors to elicit second messenger responses.
- antagonists to such polypeptides which may be used to inhibit the action of such polypeptides, for example, in the treatment of rheumatoid arthritis, lung inflammation, allergy, infectious diseases and to prevent inflammation and atherosclerosis.
- nucleic acid probes comprising nucleic acid molecules of sufficient length to specifically hybridize to a nucleic acid sequence of the present invention.
- diagnostic assays for detecting diseases or susceptibility to diseases related to mutations in the nucleic acid sequences encoding a polypeptide of the present invention.
- FIG. 1 depicts the cDNA sequence and corresponding deduced amino acid sequence of MCP-4.
- the 119 amino acid sequence shown is the full length protein, with approximately the first 26 amino acids representing a leader sequence (underlined) such that the mature form of the protein is 93 amino acids in length.
- the standard one letter abbreviation for amino acids is used.
- FIG. 2 illustrates a comparison of the amino acid sequence homology between the polypeptide of the present invention, MCP-l and MIP-lc.
- MCP-4 shows 39% homology with MlP-l ⁇ and 34% homology with MCP-l.
- FIG. 3 illustrates the chemotactic activity of the polypeptide of the present invention on neutrophils (PMN) and peripheral blood mononuclear cells (PBMC) .
- Neutrophils and peripheral blood mononuclear cells were isolated from peripheral blood, loaded with calcein-AM and used for chemocaxi ⁇ in a 96 well, single-use Neuroprobe chemotactic chamber. After 90 minutes incubation with MCP-4, the chamber was dismounted, the filter air-dried and the number of cells which' migrated through the membrane quantitated in a cytofluor II.
- FIG. 4 illustrates that MCP-4 inhibits the growth and differentiation of high proliferative potential colony forming cells (HPP-CFC) (A) and is not effective on low proliferative potential colony forming cells (LPP-CFC) (B) .
- HPP-CFC high proliferative potential colony forming cells
- LPP-CFC low proliferative potential colony forming cells
- 1,500 cells from low density, non- adherent bone marrow cells were plated in agar-medium supplemented with 5 ng/ml mouse IL-3, 100 ng/ml mouse SCF, 10 ng/ml mouse IL-l ⁇ , 5 ng/ml human M-CSF, and with or without the indicated concentrations of MCP-4. Colonies were scored after 14 days of incubation. Three experiments were performed. The results are presented as mean number of colonies ⁇ SD. An irrelevant protein had no effects.
- FIG. 5 shows the effect of MCP-4 on bone marrow cells which were enriched in the primitive Lin- cells by removing committed precursor cells (antibodies anti-CDllb, CD4, CD8, CD45R and Gr.-l) .
- the panel A shows ratios ⁇ SD of LPP- CFC/HPP-CFC in the bone marrow cells (column 1) or Lin- cells (column 2) plated in agar-medium with 5 ng/ml IL-3, 100 ng/ml SCF, 10 ng/ml IL-la, 5 ng/ml M-CSF.
- Columns 3, 4 and 5 show the ratio of LPP-CFC/HPP-CFC found in the Lin- cells that were cultured with 5 ng/ml IL-3 and 100 ng/ml SCF (column 3) , IL-3, SCF and 50 ng/ml MCP-4 (column 4) or IL-3, SCF and 50 ng/ml of an irrelevant protein (column 5) . After 6 days, cultures were assayed for HPP-CFC and LPP-CFC. The panel B shows the cellularity after 6 days incubation.
- FIG. 6 illustrates that MCP-4 protects HPP-CFC but not LPP-CFC from the cytotoxic effect of cytosine arabinoside (Ara-C) in vitro.
- FIG. 7 illustrates that, MCP-4 protects HPP-CFC but not LPP-CFC from the cytotoxic effect of 5-Fluorouracil (5-FU) in vitro.
- FIG. 8 illustrates the effect of MCP-4 and Basic FGF on Cortical Neuronal Survival.
- an isolated nucleic acid polynucleotide which encodes for the mature polypeptide having the deduced amino acid sequence of Figure 1 (SEQ ID NO:2) or for the mature polypeptide encoded by the cDNA of the clone deposited as ATCC Deposit No. 75703 on March 10, 1994.
- the polynucleotide of this invention was discovered from an activated monocyte cDNA library. It contains an open reading frame encoding a protein of approximately 119 amino acids in length of which the first 26 amino residues comprise a putative leader sequence. The mature protein therefore is predicted to be 93 amino acids in length. It is structurally related to mouse monocyte chemotactic protein (MCP-l or JE) , showing 27% identity, and 56% similarity over the entire human MCP-l protein sequence. The polypeptide contains all four cysteine residues that occur in all chemokines in a characteristic motif. The spacing between these cysteines is conserved compared with the murine MCP-l/JE which strongly suggests that the new gene is a chemokine.
- MCP-l or JE mouse monocyte chemotactic protein
- the polynucleotide of the present invention may be in the form of RNA or in the form of DNA, which DNA includes cDNA, genomic DNA, and synthetic DNA.
- the DNA may be double- stranded or single-stranded, and if single stranded may be the coding strand or non-coding (anti-sense) strand.
- the coding sequence which encodes the mature polypeptide may be identical to the coding sequence shown in Figure 1 (SEQ ID NO:l) or that of the deposited clone or may be a different coding sequence which coding sequence, as a result of the redundancy or degeneracy of the genetic code, encodes the same mature polypeptide as the DNA of Figure 1 (SEQ ID NO:l) or the deposited cDNA.
- the polynucleotide which encodes for the mature polypeptide of Figure 1 (SEQ ID NO:2) or for the mature polypeptide encoded by the deposited cDNA may include, but is not limited to: only the coding sequence for the mature polypeptide; the coding sequence for the mature polypeptide and additional coding sequence such as a leader or secretory sequence or a proprotein sequence; the coding sequence for the mature polypeptide (and optionally additional coding sequence) and non-coding sequence, such as introns or non- coding sequence 5' and/or 3' of the coding sequence for the mature polypeptide.
- polynucleotide encoding a polypeptide encompasses a polynucleotide which includes only coding sequence for the polypeptide as well as a polynucleotide which includes additional coding and/or non-coding sequence.
- the present invention further relates to variants of the hereinabove described polynucleotides which encode for fragments, analogs and derivatives of the polypeptide having the deduced amino acid sequence of Figure l (SEQ ID NO:2) or the polypeptide encoded by the cDNA of the deposited clone.
- the variant of the polynucleotide may be a naturally occurring allelic variant of the polynucleotide or a non ⁇ naturally occurring variant of the polynucleotide.
- the present invention includes polynucleotides encoding the same mature polypeptide as shown in Figure 1 (SEQ ID NO:2) or the same mature polypeptide encoded by the cDNA of the deposited clone as well as variants of such polynucleotides which variants encode for a fragment, derivative or analog of the polypeptide of Figure 1 (SEQ ID NO:2) or the polypeptide encoded by the cDNA of the deposited clone.
- Such nucleotide variants include deletion variants, substitution variants and addition or insertion variants.
- the polynucleotide may have a coding sequence which is a naturally occurring allelic variant of the coding sequence shown in Figure l (SEQ ID NO:l) or of the coding sequence of the deposited clone.
- an allelic variant is an alternate form of a polynucleotide sequence which may have a substitution, deletion or addition of one or more nucleotides, which does not. substantially alter the function of the encoded polypeptide.
- the present invention also includes polynucleotides, wherein the coding sequence for the mature polypeptide may be fused in the same reading frame to a polynucleotide sequence which aids in expression and secretion of a polypeptide from a host cell, for example, a leader sequence which functions as a secretory sequence for controlling transport of a polypeptide from the cell.
- the polypeptide having a leader sequence is a preprotein and may have the leader sequence cleaved by the host cell to form the mature form of the polypeptide.
- the polynucleotides may also encode for a proprotein which is the mature protein plus additional 5' amino acid residues.
- a mature protein having a prosequence is a proprotein and is an inactive form of the protein. Once the prosequence is cleaved an active mature protein remains.
- the polynucleotide of the present invention may encode for a mature protein, or for a protein having a prosequence or for a protein having both a prosequence and a presequence (leader sequence) .
- the polynucleotides of the present invention may also have the coding sequence fused in frame to a marker sequence which allows for purification of the polypeptide of the present invention.
- the marker sequence may be a hexa- histidine tag supplied by a pQE-9 vector to provide for purification of the mature polypeptide fused to the marker in the case of a bacterial host, or, for example, the marker sequence may be a hemagglutinin (HA) tag when a mammalian host, e.g. COS-7 cells, is used.
- the HA tag corresponds to an epitope derived from the influenza hemagglutinin protein (Wilson, I., et al., Cell, 37:767 (1984)).
- gene means the segment of DNA involved in producing a polypeptide chain; it includes regions preceding and following the coding region (leader and trailer) as well as intervening sequences (introns) between individual coding segments (exons) .
- Fragments of the full length gene of the present invention may be used as a hybridization probe for a cDNA library to isolate the full length cDNA and to isolate other cDNAs which have a high sequence similarity to the gene or similar biological activity.
- Probes of this type preferably have at least 30 bases and may contain, for example, 50 or more bases.
- the probe may also be used to identify a cDNA clone corresponding to a full length transcript and a genomic clone or clones that contain the complete gene including regulatory and promoter regions, exons, and introns.
- An example of a screen comprises isolating the coding region of the gene by using the known DNA sequence to synthesize an oligonucleotide probe. Labeled oligonucleotides having a sequence complementary to that of the gene of the present invention are used to screen a library of human cDNA, genomic DNA or mRNA to determine which members of the library the probe hybridizes to.
- the present invention further relates to polynucleotides which hybridize to the hereinabove-described sequences if there is at least 70%, preferably at least 90%, and more preferably at least 95% identity between the sequences.
- the present invention particularly relates to polynucleotides which hybridize under stringent conditions to the hereinabove-described polynucleotides.
- stringent conditions means hybridization will occur only if there is at least 95% and preferably at least 97% identity between the sequences.
- polynucleotides which hybridize to the hereinabove described polynucleotides in a preferred embodiment encode polypeptides which either retain substantially the same biological function or activity as the mature polypeptide encoded by the cDNAs of Figure 1 (SEQ ID NO:l) or the deposited cDNA(s) .
- the polynucleotide may have at least 20 bases, preferably 30 bases, and more preferably at least 50 bases which hybridize to a polynucleotide of the present invention and which has an identity thereto, as hereinabove described, and which may or may not retain activity.
- such polynucleotides may be employed as probes for the polynucleotide of SEQ ID NO:l, for example, for recovery of the polynucleotide or as a diagnostic probe or as a PCR primer.
- the present invention is directed to polynucleotides having at least a 70% identity, preferably at least 90% and more preferably at least a 95% identity to a polynucleotide which encodes the polypeptide of SEQ ID NO:2 as well as fragments thereof, which fragments have at least 30 bases and preferably at least 50 bases and to polypeptides encoded by such polynucleotides.
- the deposit ( ⁇ ) referred to herein will be maintained under the terms of the Budapest Treaty on the International Recognition of the Deposit of Micro-organisms for purposes of Patent Procedure. These deposits are provided merely as convenience to those of skill in the art and are not an admission that a deposit is required under 35 TJ.S.C. ⁇ 112.
- the sequence of the polynucleotides contained in the deposited materials, as well as the amino acid sequence of the polypeptides encoded thereby, are incorporated herein by reference and are controlling in the event of any conflict with any description of sequences herein.
- a license may be required to make, use or sell the deposited materials, and no such license is hereby granted.
- the present invention further relates to a polypeptide which has the deduced amino acid sequence of Figure 1 (SEQ ID NO:2) or which has the amino acid sequence encoded by the deposited cDNA, as well as fragments, analogs and derivatives of such polypeptide.
- fragment when referring to the polypeptide of Figure 1 (SEQ ID NO:2) or that encoded by the deposited cDNA, means a polypeptide which retains essentially the same biological function or activity as such polypeptide.
- an analog includes a proprotein which can be activated by cleavage of the proprotein portion to produce an active mature polypeptide.
- the polypeptide of the present invention may be a recombinant polypeptide, a natural polypeptide or a synthetic polypeptide, preferably a recombinant polypeptide.
- the fragment, derivative or analog of the polypeptide of Figure 1 (SEQ ID NO:2) or that encoded by the deposited cDNA may be (i) one in which one or more of the amino acid residues are substituted with a conserved or non-conserved amino acid residue (preferably a conserved amino acid residue) and such substituted amino acid residue may or may not be one encoded by the genetic code, or (ii) one in which one or more of the amino acid residues includes a substituent group, or (iii) one in which the mature polypeptide is fused with another compound, such as a compound to increase the half-life of the polypeptide (for example, polyethylene glycol) , or (iv) one in which the additional amino acids are fused to the mature polypeptide, such as a leader or secretory sequence or a sequence which is employed for purification of the mature polypeptide or a proprotein sequence.
- Such fragments, derivatives and analogs are deemed to be within the scope of those skilled in the art from the teachings here
- polypeptides and polynucleotides of the present invention are preferably provided in an isolated form, and preferably are purified to homogeneity.
- isolated means that the material is removed from its original environment (e.g., the naturaj environment if it is naturally occurring) .
- a naturally- occurring polynucleotide or polypeptide present in a living animal is not isolated, but the same polynucleotide or polypeptide, separated from some or all of the coexisting materials in the natural system, is isolated.
- Such polynucleotides could be part of a vector and/or such polynucleotides or polypeptides could be part of a composition, and still be isolated in that such vector or composition is not part of its natural environment.
- polypeptides of the present invention include the polypeptide of SEQ ID NO:2 (in particular the mature polypeptide) as well as polypeptides which have at least 70% similarity (preferably at least 70% identity) to the polypeptide of SEQ ID NO:2 and more preferably at least 90% similarity (more preferably at least 90% identity) to the polypeptide of SEQ ID NO:2 and still more preferably at least 95% similarity (still more preferably at least 95% identity) to the polypeptide of SEQ ID NO:2 and also include portions of such polypeptides with such portion of the polypeptide generally containing at least 30 amino acids and more preferably at least 50 amino acids.
- similarity between two polypeptides is determined by comparing the amino acid sequence and its conserved amino acid substitutes of one polypeptide to the sequence of a second polypeptide.
- Fragments or portions of the polypeptides of the present invention may be employed for producing the corresponding full-length polypeptide by peptide synthesis; therefore, the fragments may be employed as intermediates for producing the full-length polypeptides. Fragments or portions of the polynucleotides of the present invention may be used to synthesize full-length polynucleotides of the present invention.
- the present invention also relates to vectors which include polynucleotides of the present invention, host cells which are genetically engineered with vectors of the invention and the production of polypeptides of the invention by recombinant techniques.
- Host cells are genetically engineered (transduced or transformed or transfected) with the vectors of this invention which may be, for example, a cloning vector or an expression vector.
- the vector may be, for example, in the form of a plasmid, a viral particle, a phage, etc.
- the engineered host cells can be cultured in conventional nutrient media modified as appropriate for activating promoters, selecting transformants or amplifying the genes of the present invention.
- the culture conditions such as temperature, pH and the like, are those previously used with the host cell selected for expression, and will be apparent to the ordinarily skilled artisan.
- the polynucleotides of the present invention may be employed for producing polypeptides by recombinant techniques.
- the polynucleotide may be included in any one of a variety of expression vectors for expressing a polypeptide.
- Such vectors include chromosomal, nonchromosomal and synthetic DNA sequences, e.g. , derivatives of SV40; bacterial plasmids; phage DNA; bacuiovirus; yeast plasmids; vectors derived from combinations of plasmids and phage DNA, viral DNA such as vaccinia, adenovirus, fowl pox virus, and pseudorabie ⁇ .
- any other vector may be used as long as it is replicable and viable in the host.
- the appropriate DNA sequence may be inserted into the vector by a variety of procedures.
- the DNA sequence is inserted into an appropriate restriction endonuclease site(s) by procedures known in the art. Such procedures and others are deemed to be within the scope of those skilled in the art.
- the DNA sequence in the expression vector is operatively linked to an appropriate expression control sequence(s) (promoter) to direct mRNA synthesis.
- promoter for example, LTR or SV40 promoter, the E. coli. lac or trp. the phage lambda P L promoter and other promoters known to control expression of genes in prokaryotic or eukaryotic cell ⁇ or their viruses.
- the expression vector also contains a ribosome binding site for translation initiation and a transcription terminator.
- the vector may also include appropriate sequences for amplifying expression.
- the expression vectors preferably contain one or more selectable marker genes to provide a phenotypic trait for selection of transformed host cell ⁇ such as dihydrofolate reductase or neomycin resistance for eukaryotic cell culture, or such as tetracycline or ampicillin re ⁇ i ⁇ tance in E. coli.
- selectable marker genes to provide a phenotypic trait for selection of transformed host cell ⁇ such as dihydrofolate reductase or neomycin resistance for eukaryotic cell culture, or such as tetracycline or ampicillin re ⁇ i ⁇ tance in E. coli.
- the vector containing the appropriate DNA sequence a ⁇ hereinabove described, a ⁇ well a ⁇ an appropriate promoter or control sequence may be employed to transform an appropriate host to permit the host to express the protein.
- appropriate hosts there may be mentioned: bacterial cell ⁇ , such as E. coli. Streptomvces. Salmonella typhimurium: fungal cells, such a ⁇ yea ⁇ t; in ⁇ ect cell ⁇ such as Drosophila S2 and Spodoptera Sf9; animal cells such as CHO, COS or Bowe ⁇ melanoma; adenoviruses; plant cell ⁇ , etc.
- the ⁇ election of an appropriate host is deemed to be within the scope of tho ⁇ e ⁇ killed in the art from the teachings herein.
- the present invention also includes recombinant constructs comprising one or more of the sequences as broadly de ⁇ cribed above.
- the constructs comprise a vector, such a ⁇ a plasmid or viral vector, into which a sequence of the invention has been inserted, in a forward or reverse orientation.
- the construct further comprises regulatory sequences, including, for example, a promoter, operably linked to the sequence.
- a promoter operably linked to the sequence.
- Bacterial pQE70, pQE60, pQE-9 (Qiagen) , pBS, pDIO, phagescript, psiX174, pbluescript SK, pbsks, pNH8A, pNHl ⁇ a, pNH18A, pNH46A (Stratagene); ptrc99a, pKK223- 3, pKK233-3, pDR540, pRIT5 (Pharmacia); Eukaryotic: pWLNEO, PSV2CAT, pOG44, pXTl, pSG (Stratagene) pSVK3, pBPV, pMSG, pSVL (Pharmacia) .
- any other plasmid or vector may be used as long as they are replicable and viable in the host.
- Promoter regions can be selected from any desired gene using CAT (chloramphenicol transferase) vectors or other vectors with selectable markers.
- Two appropriate vectors are pKK232-8 and pCM7.
- Particular named bacterial promoters include lad, lacZ, T3, T7, gpt, lambda P R , P L and trp.
- Eukaryotic promoters include CMV immediate early, HSV thymidine kinase, early and late SV40, LTR ⁇ from retrovirus, and mouse metallothionein-I. Selection of the appropriate vector and promoter is well within the level of ordinary skill in the art.
- the present invention relates to host cells containing the above-described constructs.
- the host cell can be a higher eukaryotic cell, such a ⁇ a ⁇ r_ammalian cell, or a lower eukaryotic cell, such as a yeast cell, or the host cell can be a prokaryotic cell, such as a bacterial cell.
- Introduction of the construct into the host cell can be effected by calcium phosphate transfection, DEAE- Dextran mediated transfection, or electroporation (Davis, L., Dibner, M. , Battey, I., Basic Methods in Molecular Biology, (1986)) .
- the constructs in host cells can be used in a conventional manner to produce the gene product encoded by the recombinant sequence.
- the polypeptides of the invention can be synthetically produced by conventional peptide synthesizers.
- Mature protein ⁇ can be expressed in mammalian cells, yeast, bacteria, or other cells under the control of appropriate promoters.
- Cell-free translation sy ⁇ tems can also be employed to produce such protein ⁇ using RNA ⁇ derived from the DNA constructs of the present invention.
- Appropriate cloning and expression vectors for use with prokaryotic and eukaryotic hosts are described by Sambrook, et al. , Molecular Cloning: A Laboratory Manual, Second Edition, Cold Spring Harbor, N.Y., (1989), the disclosure of which is hereby incorporated by reference.
- Enhancers are cis-acting elements of DNA, usually about from 10 to 300 bp that act on a promoter to increase its transcription. Examples include the SV40 enhancer on the late ⁇ ide of the replication origin bp 100 to 270, a cytomegaloviru ⁇ early promoter enhancer, the polyoma enhancer on the late side of the replication origin, and adenovirus enhancers.
- recombinant expression vectors will include origins of replication and selectable markers permitting transformation of the host cell, e.g., the ampicillin resistance gene of E. coli and S. cerevisiae TRPl gene, and a promoter derived from a highly-expres ⁇ ed gene to direct transcription of a downstream structural sequence.
- promoters can be derived from operons encoding glycolytic enzymes such as 3-phosphoglycerate kinase (PGK) , ⁇ -factor, acid phosphatase, or heat shock protein ⁇ , among others.
- PGK 3-phosphoglycerate kinase
- ⁇ -factor acid phosphatase
- heat shock protein ⁇ among others.
- the heterologous structural sequence is assembled in appropriate phase with translation initiation and termination sequences, and preferably, a leader sequence capable of directing secretion of translated protein into the periplasmic space or extracellular medium.
- the heterologous sequence can encode a fusion protein including an N-terminal identification peptide imparting desired characteristics, e.g.; stabilization or simplified purification of expressed recombinant product.
- Useful expression vectors for bacterial use are constructed by inserting a structural DNA sequence encoding a desired protein together with suitable translation initiation and termination signals in operable reading phase with a functional promoter.
- the vector will comprise one or more phenotypic selectable markers and an origin of replication to ensure maintenance of the vector and to, if desirable, provide amplification within the host.
- Suitable prokaryotic hosts for transformation include E. coli. Bacillus subtilis. Salmonella typhimurium and various species within the genera Pseudomonas, Streptomyces, and Staphylococcus, although others may also be employed a ⁇ a matter of choice.
- useful expression vectors for bacterial use can comprise a selectable marker and bacterial origin of replication derived from commercially available plasmids comprising genetic element ⁇ of the well known cloning vector pBR322 (ATCC 37017) .
- cloning vector pBR322 ATCC 37017
- Such commercial vector ⁇ include, for example, pKK223-3 (Pharmacia Fine Chemical ⁇ , Upp ⁇ ala, Sweden) and GEM1 (Promega Biotec, Madi ⁇ on, WI, USA). These pBR322 "backbone" sections are combined with an appropriate promoter and the structural sequence to be expressed.
- the selected promoter is induced by appropriate means (e.g., temperature shift or chemical induction) and cells are cultured for an additional period.
- Cell ⁇ are typically harvested by centrifugation, disrupted by physical or chemical means, and the resulting crude extract retained for further purificatioiv.
- Microbial cell ⁇ employed in expres ⁇ ion of protein ⁇ can be disrupted by any convenient method, including freeze-thaw cycling, sonication, mechanical disruption, or use of cell lysing agent ⁇ , such methods are well known to those skilled in the art.
- mammalian cell culture systems can also be employed to express recombinant protein.
- mammalian expression system ⁇ include the COS-7 line ⁇ of monkey kidney fibrobla ⁇ t ⁇ , de ⁇ cribed by Gluzman, Cell, 23:175 (1981) , and other cell line ⁇ capable of expressing a compatible vector, for example, the C127, 3T3, CHO, HeLa and BHK cell lines.
- Mammalian expression vectors will comprise an origin of replication, a suitable promoter and enhancer, and also any necessary ribosome binding site ⁇ , polyadenylation site, splice donor and acceptor ⁇ ite ⁇ , transcriptional termination sequences, and 5' flanking nontran ⁇ cribed sequences. DNA sequences derived from the SV40 splice, and polyadenylation sites may be used to provide the required nontranscribed genetic elements.
- the polypeptide can be recovered and purified from recombinant cell cultures by methods including ammonium sulfate or ethanol precipitation, acid extraction, anion or cation exchange chromatography, pho ⁇ phocellulo ⁇ e chromatography, hydrophobic interaction chromatography, affinity chromatography, hydroxylapatite chromatography and lectin chromatography. Protein refolding steps can be used, as necessary, in completing configuration of the mature protein. Finally, high performance liquid chromatography (HPLC) can be employed for final purification steps.
- HPLC high performance liquid chromatography
- polypeptides of the present invention may be a naturally purified product, or a product of chemical synthetic procedures, or produced by recombinant techniques from a prokaryotic or eukaryotic host (for example, by bacterial, yeast, higher plant, insect and marnmalian cell ⁇ in culture) .
- a prokaryotic or eukaryotic host for example, by bacterial, yeast, higher plant, insect and marnmalian cell ⁇ in culture
- the polypeptides of the present invention may be glycosylated or may be non-glycosylated.
- Polypeptides of the invention may also include an initial methionine amino acid residue.
- the polypeptide of the present invention may be employed for the promotion of wound healing. Since MCP-4 is a chemokine, it is a chemo-attractant for leukocytes (such as monocytes, T lymphocytes, basophils, PMNs, PBL ⁇ etc.) ,- therefore, it causes infiltration of target immune cells to a wound area.
- leukocytes such as monocytes, T lymphocytes, basophils, PMNs, PBL ⁇ etc.
- the MCP-4 polypeptide may also be employed a ⁇ an anti ⁇ tumor treatment and for treating localized complications of a malignancy, such as pleural effusions or ascites. Instilling MCP-4 into the involved anatomic space can lead to local monocyte accumulation and activation.
- MCP-4 may be employed for combatting parasitic infections.
- the polypeptide of the present invention may be employed for mobilizing hematopoietic progenitor cells into the peripheral blood circulation of a non-human and human host, preferably a human host, for subsequent recovery and use thereof in transplantation.
- the polypeptide of the present invention is administered in an amount effective to mobilize into and increase the amount of hematopoietic progenitor cell ⁇ in the peripheral blood, in particular, increase the amount of human hematopoietic stem cell ⁇ in the peripheral blood.
- Such cell ⁇ are often referred to as CD34+ cell ⁇ .
- polypeptide of the present invention may be administered alone or in conjunction with other agent ⁇ , for example, GM-CSF and G-CSF which are known to be effective for increasing such cell ⁇ in peripheral blood.
- agent ⁇ for example, GM-CSF and G-CSF which are known to be effective for increasing such cell ⁇ in peripheral blood.
- Mobilization of hematopoietic progenitor cell ⁇ into the -peripheral circulation is important for autologous and heterologous bone marrow transfers which are u ⁇ ed, for example for treatment of cancer and hematological disorders.
- the polypeptide of the present invention may also be employed to inhibit destruction of hematopoietic progenitor cell ⁇ in a non-human and human host, preferably a human host, resulting from treatment with chemotherapeutic agents.
- the polypeptide of the present invention may be administered prior to, during or subsequent to chemotherapy and allows a higher dose of chemotherapy to be employed in the treatment of cancer.
- the polypeptide of the present invention is administered in an amount effective to inhibit destruction of hematopoietic progenitor cell ⁇ ; for example, the polypeptide is administered in amounts as hereinafter de ⁇ cribed.
- the polypeptide may be administered alone or in conjunction with other agents.
- the polypeptide of the pre ⁇ ent invention may al ⁇ o be employed to protect hematopoietic progenitor cells to thereby prevent or inhibit disease ⁇ which may result from the destruction thereof; for example, leukopenia, myelo- dysplastic syndrome, and neutropenia.
- the polypeptide of the present invention may al ⁇ o be employed in amounts effective to inhibit the degeneration of neuronal cells in non-human and human ho ⁇ t ⁇ , preferably a human host, which re ⁇ ults from neuronal degenerative diseases such as Alzheimer's disea ⁇ e, Parkinson's disea ⁇ e and AIDS- related complex.
- the polypeptide may be employed in amounts as hereinafter described.
- IM - Immature cell a rare cell type found in the bone marrow, gives rise to a highly refrectile, small ( ⁇ 50 cells/colony) colony in the presence of multiple cytokines; the cells within the colony are stacked in a horizontal plane and they exhibit blast cell like nuclear staining characteristics.
- mice were injected IP daily with either MCP-4 or saline. Forty eight hours after the first injection, blood was collected from each animal by cardiac puncture and mice were then sacrificed to obtain bone marrow and spleen. Indicated numbers of cells from each of the tissues were then plated in duplicates in agar-containing medium in the presence of rmIL-3(5ng/ml) , rmSCF(50ng/ml) , rhM-CSF(5ng/ml) , and rmIL-la(10ng/ml) and incubated for 14 days. Data are pooled from three animals in each group and expressed as mean ⁇ S.D.
- PB Peripheral blood, mononuclear cells
- I Spl. Low density fraction of spleen cells r ⁇ BM « Bone marrow fraction that is 6-fold enriched for the primitive cells
- Immature cell a rare cell type found in the bone marrow, gives rise to a highly refrectile, small ( ⁇ 50 cells/colony) colony in the presence of multiple cytokines; the cells within the colony are stacked in a horizontal plane and they exhibit blast cell like nuclear staining characteristics.
- mice were injected IP daily with either MCP-4 or saline.
- blood was collected from each animal by cardiac puncture and mice were then sacrificed to obtain bone marrow and spleen.
- Indicated numbers of cells from each of the tissues were then plated in duplicates in agar-containing medium in the presence of rmIL-3 (5ng/ml) , rmSCF(50ng/ml) , rhM-CSF(5ng/ml) , and rmlL-la(lOng/ml) and incubated for 14 days.
- Data are pooled from three animals in each group and expressed as mean ⁇ S.D.
- mice ⁇ 20g weight were injected (IP) daily with either saline or ro in MCP-4. Forty eight hours after the first injection, blood was collected by cardiac
- mice were sacrificed to obtain spleen and bone marrow cells.
- 0.1 ml of blood from each of the animal was first treated with Gen Trak lysing solution to lyse the red blood cells. Nucleated cells were then sedimented, washed with PBS, and incubated with PE-conjugated monoclonal antibodies against CD45R, Gr. 1, Mac. 1, CD4, & CD8 and processed for flowcytometry. At least 10,000 cells were analyzed. Data are expressed as mean percent positive cells in the appropriate channels ⁇ SD.
- the polynucleotides and polypeptides of the present invention may be employed a ⁇ research reagents and materials for discovery of treatments and diagnostics to human disease.
- This invention provides a method for identification of the receptor for MCP-4.
- the gene encoding the receptor can be identified by numerous methods known to those of skill in the art, for example, ligand panning and FACS sorting (Coligan, et al., Current Protocols in Immun., 1(2), Chapter 5, (1991)).
- expression cloning is employed wherein polyadenylated RNA is prepared from a cell responsive to MCP-4, and a cDNA library created from this RNA is divided into pools and used to transfect COS cells or other cells that are not responsive to MCP-4. Transfected cell ⁇ which are grown on glass slides are exposed to labeled MCP-4.
- MCP- 4 can be labeled by a variety of means including iodination or inclusion of a recognition site for a site-specific protein kinase. Following fixation and incubation, the slides are subjected to auto-radiographic analysis. Positive pools are identified and sub-pools are prepared and re- transfected using an iterative sub-pooling and re-screening process, eventually yielding a single clone that encodes the putative receptor.
- labeled ligand can be photoaffinity linked with cell membrane or extract preparations that express the receptor molecule. Cross-linked material is resolved by PAGE and exposed to X-ray film.
- the labeled complex containing the ligand-receptor can be excised, resolved into peptide fragments, and subjected to protein microsequencing.
- the amino acid sequence obtained from microsequencing would be used to design a set of degenerate oligonucleotide probes to screen a cDNA library to identify the gene encoding the putative receptor.
- This invention also provides a method of screening compounds to identify agonists and antagonists to the polypeptide of the present invention.
- a mammalian cell or membrane preparation expressing an MCP-4 receptor would be contacted with a compound of interest.
- the ability of the compound to generate a the response of a known second messenger system following interaction with the MCP-4 receptor is then measured.
- second messenger system ⁇ include but are not limited to, cAMP guanylate cycla ⁇ e, ion channels or phosphoinositide hydrolysis.
- the ability of a compound to bind the MCP-4 receptor and elicit a second messenger response identifies that compound as an agonist.
- a compound which binds but does not elicit a second messenger response identifies that compound as an antagonist.
- a competitive binding assay in which the compounds are labeled, for example by radioactivity may also be employed to identify antagonists. Such methods are known in the art.
- Antagonists include negative dominant mutants of MCP-4.
- MCP-4 is a tetrameric polypeptide wherein one mutated unit will cause the entire polypeptide to be non-functional.
- a negative dominant mutant of MCP-4 binds to the MCP-4 receptor but fails to activate cells (leukocytes and monocytes) to which it binds.
- An assay to detect negative dominant mutants of MCP-4 is an in vitro chemotaxis as ⁇ ay wherein a multiwell chemotaxis chamber equipped with polyvinylpyrrolidone-free polycarbonate membranes is used to measure the chemoattractant ability of MCP-4 for leukocytes in the presence and absence of potential antagonist or agonist molecules.
- Potential antagonists also include an antibody, or in some cases, an oligopeptide, which binds to the polypeptide and prevents it from binding its receptor.
- Antisense technology can be used to control gene expression through triple-helix formation or antisense DNA or RNA, both of which methods are based on binding of a polynucleotide to DNA or RNA.
- the 5' coding portion of the polynucleotide sequfence which encodes for the mature polypeptides of the present invention, is used to design an antisense RNA oligonucleotide of from about 10 to 40 base pairs in length.
- a DNA oligonucleotide is designed to be complementary to a region of the gene involved in transcription (triple helix - see Lee et al., Nucl.
- the antisense RNA oligonucleotide hybridizes to the mRNA in vivo and blocks translation of the mRNA molecule into MCP-4 polypeptide (Antisense - Okano, J. Neurochem., 56:560 (1991); Oligodeoxyhucleotides as Antisense Inhibitors of Gene Expression, CRC Press, Boca Raton, FL (1988) ) .
- the oligonucleotides described above can also be delivered to cells such that the antisense RNA or DNA may be expressed in vivo to inhibit production of MCP-4.
- Potential antagonists include a small molecule which binds to and occupies the active site of the polypeptide thereby making the catalytic site inaccessible to substrate such that normal biological activity is prevented.
- small molecules include but are not limited to small peptides or peptide-like molecules.
- the antagonists may be employed to treat inflammation by preventing the attraction of monocytes to a wound or a site of trauma, and to regulate normal pulmonary macrophage populations, since acute and chronic inflammatory pulmonary diseases are associated with sequestration of mononuclear phagocytes in the lung. They may also be employed to treat rheumatoid arthritis, since MCP levels were found to be significantly elevated in synovial fluid from rheumatoid arthritis patients which suggests that synovial production of MCP attracts monocytes whose influx and activation are important in the pathogenesis of both degenerative and inflammatory arthropathies.
- the antagonists may also be employed for treating atherosclerosis, since MCPs mediate monocyte infiltration in the artery wall which infiltration leads to atherosclerosis, and to prevent allergies, since it has been ⁇ hown that MCPs directly induce histamine release by basophils.
- Antagonists may also be employed to treat infectious diseases such as tuberculosis, since tuberculosis targets cells, usually monocytes, causing the monocytes to release MCPs which attracts more monocytes to the lungs causing severe inflammation.
- the antagonists may be employed in a composition with a pharmaceutically acceptable carrier, e.g. , as hereinabove described.
- compositions comprise a therapeutically effective amount of the polypeptide or agonist or antagonist, and a pharmaceutically acceptable carrier or excipient.
- a carrier includes but is not limited to saline, buffered saline, dextrose, water, glycerol, ethanol, and combinations thereof. The formulation should suit the mode of administration.
- the invention also provides a pharmaceutical pack or kit comprising one or more containers filled with one or more of the ingredients of the pharmaceutical compositions of the invention.
- a pharmaceutical pack or kit comprising one or more containers filled with one or more of the ingredients of the pharmaceutical compositions of the invention.
- Associated with such container(s) can be a notice in the form prescribed by a governmental agency regulating the manufacture, use or sale of pharmaceuticals or biological products, which notice reflects approval by the agency of manufacture, use or sale for human administration.
- the polypeptides, or agonists and antagonist ⁇ , of the present invention may be employed in conjunction with other therapeutic compounds.
- the pharmaceutical compositions may be administered in a convenient manner such as by the oral, topical, parenterally, intravenous, intraperitoneal, intramuscular, subcutaneous, intranasal or intradermal routes.
- the pharmaceutical compositions are administered in an amount which is effective for treating and/or prophylaxis of the specific indication. In general, they are administered in an amount of at least about 10 ⁇ g/kg body weight and in most cases they will be administered in an amount not in excess of about 8 mg/Kg body weight per day. In most cases, the dosage is from about 10 ⁇ g/kg to about 1 mg/kg body weight daily, taking into account the routes of administration, symptoms, etc.
- polypeptides and agonists and antagonists which are polypeptides may also be employed in accordance with the present invention by expression of such polypeptides in vivo, which is often referred to as "gene therapy.”
- cells from a patient may be engineered with a polynucleotide (DNA or RNA) encoding a polypeptide ex vivo, with the engineered cells then being provided to a patient to be treated with the polypeptide.
- a polynucleotide DNA or RNA
- cells may be engineered by the use of a retroviral plasmid vector containing RNA encoding a polypeptide of the present invention.
- cells may be engineered in vivo for expression of a polypeptide in vivo by, for example, procedures known in the art.
- a packaging cell is transduced with a retroviral plasmid vector containing RNA encoding a polypeptide of the present invention such that the packaging cell now produces infectious viral particles containing the gene of interest.
- These producer cells may be administered to a patient for engineering cells in vivo and expression of the polypeptide in vivo.
- Retroviruses from which the retroviral plasmid vectors hereinabove mentioned may be derived include, but are not limited to, Moloney Murine Leukemia Virus, spleen necrosis virus, retroviruses such as Rou ⁇ Sarcoma Virus, Harvey Sarcoma Virus, avian leukosis virus, gibbon ape leukemia virus, human immunodeficiency virus, adenovirus, Myeloproliferative Sarcoma Virus, and mammary tumor virus.
- the retroviral plasmid vector is derived from Moloney Murine Leukemia Virus.
- the vector includes one or more promoters.
- Suitable promoters which may be employed include, but are not limited to, the retroviral LTR; the SV40 promoter; and the huma_ ⁇ cytomegalovirus (CMV) promoter described in Miller, et al., Biotechni ⁇ ues. Vol. 7, No. 9, 980-990 (1989), or any other promoter (e.g., cellular promoters such as eukaryotic cellular promoters including, but not limited to, the histone, pol III, and /3-actin promoters) .
- CMV cytomegalovirus
- viral promoters which may be employed include, but are not limited to, adenovirus promoters, thymidine kinase (TK) promoters, and B19 parvovirus promoters. The selection of a suitable promoter will be apparent to those skilled in the art from the teachings contained herein.
- Suitable promoters which may be employed include, but are not limited to, adenoviral promoters, such as the adenoviral major late promoter; or hetorologous promoters, such a ⁇ the cytomegalovirus (CMV) promoter; the respiratory syncytial virus (RSV) promoter; inducible promoters, such as the MMT promoter, the metallothionein promoter; heat ⁇ hock promoter ⁇ ; the albumin promoter; the ApoAI promoter; human globin promoters; viral thymidine kinase promoters, such as the Herpes Simplex thymidine kinase promoter; retroviral LTRs (including the modified retroviral LTRs hereinabove described) ; the 0-actin promoter; and human growth hormone promoters.
- the promoter also may be the native promoter which controls the
- the retroviral plasmid vector is employed to transduce packaging cell lines to form producer cell lines.
- packaging cells which may be transfected include, but are not limited to, the PE501, PA317,. ⁇ -2 , ⁇ -AM, PA12, T19-14X, VT-19-17-H2, ⁇ CRE, J ⁇ CRIP, GP+E-86, GP+envAml2, and DAN cell lines a ⁇ described in Miller, Human Gene Therapy. Vol. 1, pgs. 5-14 (1990), which is incorporated herein by reference in its entirety.
- the vector may transduce the packaging cells through any means known in the art. Such means include, but are not limited to, electroporation, the use of liposomes, and CaP0 4 precipitation.
- the retroviral plasmid vector may be encapsulated into a liposome, or coupled to a lipid, and then administered to a host.
- the producer cell line generates infectious retroviral vector particles which include the nucleic acid sequence(s) encoding the polypeptides. Such retroviral vector particles then may be employed, to transduce eukaryotic cells, either in vi tro or in vivo.
- the transduced eukaryotic cell ⁇ will express the nucleic acid sequence(s) encoding the polypeptide.
- Eukaryotic cells which may be transduced include, but are not limited to, embryonic stem cells, embryonic carcinoma cell ⁇ , a ⁇ well a ⁇ hematopoietic ⁇ tem cells, hepatocytes, fibroblasts, myobla ⁇ t ⁇ , keratinocytes, endothelial cell ⁇ , and bronchial epithelial cell ⁇ .
- This invention is also related to the use of the gene of the present invention as a diagnostic. Detection of a mutated form of the gene will allow a diagnosis of a disease or a susceptibility to a disease which results from underexpression of MCP-4.
- Nucleic acids for diagnosis may be obtained from a patient's cells, including but not limited to blood, urine, saliva, tissue biopsy and autopsy material.
- the genomic DNA may be used directly for detection or may be amplified enzymatically by using PCR (Saiki et al., Nature, 324:163-166 (1986)) prior to analysis.
- RNA or cDNA may also be used for the same purpose.
- PCR primers complementary to the nucleic acid encoding MCP-4 can be used to identify and analyze mutations. For example, deletions and insertions can be detected by a change in size of the amplified product in comparison to the normal genotype.
- Point mutations can be identified by hybridizing amplified DNA to radiolabeled RNA or alternatively, radiolabeled antisense DNA sequences. Perfectly matched sequences can be distinguished from mismatched duplexes by RNase A digestion or by differences in melting temperatures.
- Sequence differences between the reference gene and genes having mutations may be revealed by the direct DNA sequencing method.
- cloned DNA segments may be employed as probes to detect specific DNA segments.
- the sensitivity of this method is greatly enhanced when combined with PCR.
- a sequencing primer is used with double-stranded PCR product or a single-stranded template molecule generated by a modified PCR.
- the sequence determination is performed by conventional procedures with radiolabeled nucleotide or by automatic sequencing procedures with fluorescent-tags.
- DNA sequence differences may be achieved by detection of alteration in electrophoretic mobility of DNA fragments in gels with or without denaturing agents. Small sequence deletions and insertions can be visualized by high resolution gel electrophoresis. DNA fragments of different sequences may be distinguished on denaturing formamide gradient gels in which the mobilities of different DNA fragments are retarded in the gel at different positions according to their specific melting or partial melting temperatures (see, e.g., Myers et al . , Science, 230:1242 (1985) ) .
- Sequence changes at specific locations may also be revealed by nuclease protection assays, such a ⁇ RNa ⁇ e and SI protection or the chemical cleavage method (e.g., Cotton et al . , PNAS, USA, 85:4397-4401 (1985)) .
- the detection of a specific DNA sequence may be achieved by methods such as hybridization, RNase protection, chemical cleavage, direct DNA sequencing or the use of restriction enzymes, (e.g., Restriction Fragment Length Polymorphisms (RFLP) ) and Southern blotting of genomic DNA.
- restriction enzymes e.g., Restriction Fragment Length Polymorphisms (RFLP)
- mutations can also be detected by in situ analysis.
- the present invention also relates to a diagnostic as ⁇ ay for detecting altered levels of the polypeptide of the present invention in various tis ⁇ ue ⁇ ⁇ ince an over-expre ⁇ ion of the proteins compared to normal control ti ⁇ ue samples can detect the presence of MCP-4.
- Assay ⁇ u ⁇ ed to detect levels of the polypeptide of the present invention in a sample derived from a host are well-known to those of skill in the art and include radioimmunoassay ⁇ , competitive-binding a ⁇ says, Western Blot analysis and preferably an ELISA assay.
- An ELISA as ⁇ ay initially comprises preparing an antibody specific to the MCP-4 antigen, preferably a monoclonal antibody.
- a reporter antibody i ⁇ prepared again ⁇ t the monoclonal antibody.
- a detectable reagent such as radioactivity, fluorescence or in this example a horseradish peroxidase enzyme.
- a sample is now removed from a host and incubated on a solid support, e.g. a polystyrene dish, that binds the proteins in the sample. Any free protein binding sites on the dish are then covered by incubating with a non-specific protein such as bovine serum albumin.
- the monoclonal antibody is incubated in the dish during which time the monoclonal antibodies attached to any of the polypeptide of the present invention attached to the polystyrene dish.
- a competition assay may be employed wherein antibodies specific to the polypeptide of the present invention are attached to a solid support and labeled MCP-4 and a ⁇ ample derived from the host are pa ⁇ ed over the solid support and the amount of label detected attached to the solid support can be correlated to a quantity of the polypeptide of the present invention in the sample.
- the sequence ⁇ of the present invention are also valuable for chromosome identification.
- the sequence is specifically targeted to and can hybridize with a particular location on an individual human chromosome.
- Few chromosome marking reagents based on actual sequence data (repeat polymorphisms) are presently available for marking chromosomal location.
- the mapping of DNAs to chromosome ⁇ according to the present invention is an important first step in correlating those sequences with genes associated with disease.
- sequences can be mapped to chromosome ⁇ by preparing PCR primers (preferably 15-25 bp) from the cDNA. Computer analysis of the 3' untranslated region of the gene is used to rapidly select primers that do not span more than one exon in the genomic DNA, thus complicating the amplification proces ⁇ . These primers are then used for PCR screening of ⁇ omatic cell hybrids containing individual human chromosomes. Only those hybrids containing the human gene corresponding to the primer will yield an amplified fragment.
- mapping of somatic cell hybrids i ⁇ a rapid procedure for assigning a particular DNA to a particular chromosome.
- sublocalization can be achieved with panels of fragments from specific chromosomes or pools of large genomic clones in an analogous manner.
- Other mapping strategie ⁇ that can similarly be used to map to its chromosome include in si tu hybridization, pre ⁇ creening with labeled flow- ⁇ orted chromosomes and preselection by hybridization to construct chromosome specific-cDNA libraries.
- Fluorescence in si tu hybridization (FISH) of a cDNA clone to a metaphase chromosomal spread can be used to provide a precise chromosomal location in one step.
- FISH Fluorescence in si tu hybridization
- a cDNA preci ⁇ ely localized to a chromosomal region associated with the disease could be one of between 50 and 500 potential causative gene ⁇ . (This assume ⁇ 1 megabase mapping resolution and one gene per 20 kb) .
- polypeptides, their fragment ⁇ or other derivative ⁇ , or analog ⁇ thereof, or cell ⁇ expressing them can be used as an immunogen to produce antibodies thereto.
- These antibodies can be, for example, polyclonal or monoclonal antibodies.
- the present invention al ⁇ o includes chimeric, single chain, and humanized antibodies, as well as Fab fragments, or the product of an Fab expression library. Various procedures known in the art may be used for the production of such antibodies and fragments.
- Antibodies generated against the polypeptides corresponding to a sequence of the present invention can be obtained by direct injection of the polypeptides into an animal or by administering the polypeptides to an animal, preferably a nonhuman. The antibody so obtained will then bind the polypeptides itself. In this manner, even a sequence encoding only a fragment of the polypeptides can be used to generate antibodies binding the whole native polypeptides. Such antibodies can then be used to isolate the polypeptide from tis ⁇ ue expressing that polypeptide.
- any technique which provides antibodies produced by continuous cell line cultures can be used. Examples include the hybridoma technique (Kohler and Mil ⁇ tein, 1975, Nature, 256:495-497), the trioma technique, the human B-cell hybridoma technique (Kozbor et al., 1983, Immunology Today 4:72), ,and the EBV- hybridoma technique to produce human monoclonal antibodies (Cole; et al., 1985, in Monoclonal Antibodies and Cancer Therapy, Alan R. Liss, Inc., pp. 77-96) .
- Plasmids are designated by a lower case p preceded and/or followed by capital letters and/or numbers.
- the ⁇ tarting plasmids herein are either commercially available, publicly available on an unrestricted basis, or can be constructed from available plasmids in accord with published procedures.
- equivalent plasmids to those described are known in the art and will be apparent to the ordinarily skilled artisan.
- “Digestion” of DNA refers to catalytic cleavage of the DNA with a restriction enzyme that acts only at certain sequences in the DNA.
- the various restriction enzymes used herein are commercially available and their reaction conditions, cofactors and other requirements were used a ⁇ would be known to the ordinarily skilled artisan.
- For analytical purposes typically 1 ⁇ g of plasmid or DNA fragment is used with about 2 units of enzyme in about 20 ⁇ l of buffer solution.
- For the purpose of isolating DNA fragments for plasmid construction typically 5 to 50 ⁇ g of DNA are digested with 20 to 250 units of enzyme in a larger volume. Appropriate buffers and substrate amounts for particular restriction enzymes are specified by the manufacturer. Incubation times of about 1 hour at 37'C are ordinarily used, but may vary in accordance with the supplier's instruction . After digestion the reaction is electrophoresed directly on a polyacrylamide gel to isolate the desired fragment.
- Size separation of the cleaved fragments is performed using 8 percent polyacrylamide gel described by Goeddel, D. et al . , Nucleic Acids Res., 8:4057 (1980) .
- Oligonucleotide ⁇ refer ⁇ to either a ⁇ ingle ⁇ tranded polydeoxynucleotide or two complementary polydeoxynucleotide ⁇ trand ⁇ which may be chemically ⁇ ynthesized.
- Such synthetic oligonucleotides have no 5' phosphate and thus will not ligate to another oligonucleotide without adding a phosphate with an ATP in the presence of a kinase.
- a synthetic oligonucleotide will ligate to a fragment that has not been dephosphorylated.
- Ligase refer ⁇ to the proce ⁇ of forming phosphodiester bonds between two double stranded nucleic acid fragments (Maniatis, T., et al., Id., p. 146) . Unless otherwise provided, ligation may be accomplished using known buffers and conditions with 10 units to T4 DNA ligase ("ligase”) per 0.5 ⁇ g of approximately equimolar amounts of the DNA fragments to be ligated.
- ligase T4 DNA ligase
- the DNA sequence encoding for MCP-4 is initially amplified using PCR oligonucleotide primers corresponding to the 5' and 3' sequence ⁇ of the proce ⁇ ed MCP-4 protein (minu ⁇ the signal peptide sequence) and the vector sequences 3' to the MCP-4 gene. Additional nucleotides corresponding to MCP-4 were added to the 5' and 3' sequences respectively.
- the 5' oligonucleotide primer has the sequence 5' TCAGGATCCCCTACGGGCTCGTGGTC 3' (SEQ ID NO:3) contains a Bam HI restriction enzyme ⁇ ite followed by 18 nucleotides of MCP-4 coding sequence ⁇ tarting from the presumed terminal amino acid of the processed protein codon.
- the 3' sequence 3' CGCTCTAGAGTAAAACGACGGCCAGT 5' (SEQ ID NO:4) contains complementary sequences to the Xbal site and to a pBluescript SK- vector sequence located 3' to the MCP-4 DNA insert.
- the restriction enzyme sites correspond to the restriction enzyme sites on the bacterial expression vector pQE-9. (Qiagen, Inc.
- pQE-9 encodes antibiotic resistance (Amp r ) , a bacterial origin of replication (ori) , an IPTG-regulatable promoter operator (P/O) , a ribosome binding ⁇ ite (RBS) , a 6- Hi ⁇ tag and restriction enzyme sites.
- pQE-9 was then digested with Bam HI and Xba I. The amplified sequences were ligated into pQE-9 and were inserted in frame with the sequence encoding for the histidine tag and the RBS. The ligation mixture was then u ⁇ ed to tran ⁇ form E.
- M15/rep4 contains multiple copies of the plasmid pREP4, which expresses the lad repressor and also confers kanamycin resistance (Kan r ) .
- Transforrnants are identified by their ability to grow on LB plates and ampicillin/kanamycin resi ⁇ tant colonies were selected. Plasmid DNA was isolated and confirmed by restriction analysis.
- Clones containing the desired constructs were grown overnight (O/N) in liquid culture in LB media supplemented with both Amp (100 ug/ml) and Kan (25 ug/ml) .
- the O/N culture is used to inoculate a large culture at a ratio of 1:100 to 1:250.
- the cells were grown to an optical density 600 (O.D. 600 ) of between 0.4 and 0.6.
- IPTG I ⁇ opropyl-B-D-thiogalacto pyrano ⁇ ide
- IPTG I ⁇ opropyl-B-D-thiogalacto pyrano ⁇ ide
- Cell ⁇ were grown an extra 3 to 4 hour ⁇ . Cell ⁇ were then harve ⁇ ted by centrifugation. The cell pellet wa ⁇ ⁇ olubilized in the chaotropic agent 6 Molar Guanidine HCl. After clarification, solubilized MCP-4 wa ⁇ purified from this solution by chromatography on a Nickel- Chelate column under conditions that allow for tight binding by proteins containing the 6-His tag. Hochuli, E. et al., J. Chromatography 411:177-184 (1984) .
- MCP-4 (95% pure) wa ⁇ eluted from the column in 6 molar guanidine HCl pH 5.0 and for the purpo ⁇ e of renaturation adju ⁇ ted to 3 molar guanidine HCl, lOOmM ⁇ odium pho ⁇ phate, 10 mmolar glutathione (reduced) and 2 mmolar glutathione (oxidized) . After incubation in this solution for 12 hours the protein was dialyzed to 10 mmolar sodium phosphate.
- Northern blot analy ⁇ is wa ⁇ carried out to examine the levels of expression of MCP-4 in human cells.
- Total cellular RNA samples were isolated with RNAzolTM B system (Biotecx Laboratories, Inc. 6023 South Loop East, Houston, TX 77033) .
- the labeling reaction was done according to the Stratagene Prime-It kit with 50ng DNA fragment.
- the labeled DNA was purified with a Select-G-50 column. (5 Prime - 3 Prime, Inc. 5603 Arapahoe Road, Boulder, CO 80303) .
- the filter was then hybridized with radioactive labeled full length MCP-4 gene at 1,000,000 cpm/ml in 0.5 M NaP0 4 , pH 7.4 and 7% SDS overnight at 65 * C. After wash twice at room temperature and twice at 60 * C with 0.5 x SSC, 0.1% SDS, the filter was then exposed at -70 * C overnight with an intensifying screen.
- the message RNA for MCP-4 is abundant in activated and unactivated T cells, monocytes and T cell line ⁇ .
- the amplified sequences were isolated from a 1% agarose gel using a commercially available kit ("Geneclean, " BIO 101 Inc., La Jolla, Ca.) .
- the fragment was then digested with restriction endonucleases corresponding to the amplified products and then purified again on a 1% agarose gel. This fragment is designated F2.
- the vector pRGl (modification of pVL941 vector, discussed below) is used for the expression of the MCP-4 protein using the bacuiovirus expression system (for review see: Summers, M.D. and Smith, G.E. 1987, A manual of methods for bacuiovirus vectors and insect cell culture procedures, Texas Agricultural Experimental Station Bulletin No. 1555) .
- This expression vector contains the strong polyhedrin promoter of the Autographa californica nuclear polyhedro ⁇ i ⁇ virus (AcMNPV) followed by the recognition sites for the restriction endonucleases used to digest the amplified products.
- the polyadenylation site of the simian virus (SV)40 is used for efficient polyadenylation.
- the beta-galactosidase gene from E.coli i ⁇ inserted in the same orientation as the polyhedrin promoter followed by the polyadenylation signal of the polyhedrin gene.
- the polyhedrin sequences are flanked at both side ⁇ by viral ⁇ equences for the cell-mediated homologous recombination of co-transfected wild-type viral DNA.
- Many other bacuiovirus vectors could be used in place of pRGl such as pAc373, pVL941 and pAcIMl (Luckow, V.A. and Summers, M.D., Virology, 170:31-39) .
- the plasmid is dige ⁇ ted with the restriction enzymes and dephosphorylated using calf intestinal phosphatase by procedures known in the art.
- the DNA was then isolated from a 1% agarose gel using the commercially available kit ("Geneclean" BIO 101 Inc., La Jolla, Ca.) .
- This vector DNA i ⁇ designated V2.
- Fragment F2 and the dephosphorylated plasmid V2 are ligated with T4 DNA ligase.
- E.coli HB101 cells are then transformed and bacteria identified that contained the plasmid (pBacMCP-4) with the MCP-4 gene using the enzymes. The sequence of the cloned fragment is confirmed by DNA sequencing.
- the transfection mixture i ⁇ added drop-wise to the Sf9 insect cell ⁇ (ATCC CRL 1711) ⁇ eeded in a 35 mm ti ⁇ ue culture plate with 1 ml Grace' ⁇ medium without serum.
- the plate is rocked back and forth to mix the newly added ⁇ olution.
- the plate i ⁇ then incubated for 5 hour ⁇ at 27°C.
- the tran ⁇ fection solution is removed from the plate and 1 ml of Grace's insect medium supplemented with 10% fetal calf serum is added.
- the plate wa ⁇ put back into an incubator and cultivation continued at 27 ⁇ C for four day ⁇ .
- the virus is added to the cells, blue stained plaques are picked with the tip of an Eppendorf pipette.
- the agar containing the recombinant viruse ⁇ is then resu ⁇ pended in an Eppendorf tube containing 200 ⁇ l of Grace's medium.
- the agar is removed by a brief centrifugation and the supernatant containing the recombinant bacuiovirus is used to infect Sf9 cells seeded in 35 mm dishe .
- the supernatants of these culture dishes are harvested and then stored at 4°C.
- Sf9 cells are grown in Grace's medium supplemented with 10% heat-inactivated FBS.
- the cells are infected with the recombinant bacuiovirus V-MCP-4 at a multiplicity of infection (MOD of 2.
- MOD multiplicity of infection
- the medium is removed and replaced with SF900 II medium minus methionine and cysteine (Life Technologies Inc., Gaithersburg) .
- 42 hour ⁇ later 5 ⁇ Ci of 3S S-methionine and 5 ⁇ Ci 35 S cysteine (Amersham) are added.
- the cells are further incubated for 16 hour ⁇ before they are harvested by centrifugation and the labelled proteins visualized by SDS-PAGE and autoradiography.
- Fibroblasts are obtained from a subject by skin biopsy.
- the resulting tis ⁇ ue i ⁇ placed in ti ⁇ ue-culture medium and separated into small pieces. Small chunks of the tissue are placed on a wet surface of a tissue culture flask, approximately ten pieces are placed in each flask.
- the flask is turned upside down, closed tight and left at room temperature over night. After 24 hours at room temperature, the flask i ⁇ inverted and the chunks of tis ⁇ ue remain fixed to the bottom of the fla ⁇ k and fre ⁇ h media (e.g., Ham' ⁇ F12 media, with 10% FBS, penicillin and ⁇ treptomycin, i ⁇ added. Thi ⁇ i ⁇ then incubated at 37°C for approximately one week.
- fre ⁇ h media e.g., Ham' ⁇ F12 media, with 10% FBS, penicillin and ⁇ treptomycin, i ⁇ added.
- a monolayer of fibroblast ⁇ emerge.
- the monolayer i ⁇ tryp ⁇ inized and scaled into larger flasks.
- pMV-7 (Kirschmeier, P.T. et al, DNA, 7:219-25 (1988) flanked by the long terminal repeat ⁇ of the Moloney murine sarcoma virus, is digested with EcoRI and Hindlll and subsequently treated with calf intestinal phosphata ⁇ e.
- the cDNA encoding a polypeptide of the present invention is amplified using PCR primers which correspond to the 5' and 3' end sequences respectively.
- the 5' primer contains an EcoRI site and the 3' primer further includes a Hindlll site.
- Equal quantities of the Moloney murine sarcoma viru ⁇ linear backbone and the amplified EcoRI and Hindlll fragment are added together, in the pre ⁇ ence of T4 DNA ligase.
- the resulting mixture is maintained under conditions appropriate for ligation of the two fragments.
- the ligation mixture is used to transform bacteria HB101, which are then plated onto agar-containing kanamycin for the purpose of confirming that the vector had the gene of interest properly inserted.
- the amphotropic pA317 or GP+aml2 packaging cells are grown in tissue culture to confluent density in Dulbecco' Modified Eagle ⁇ Medium (DMEM) with 10% calf serum (CS) , penicillin and streptomycin.
- DMEM Dulbecco' Modified Eagle ⁇ Medium
- CS calf serum
- penicillin and streptomycin The MSV vector containing the gene i ⁇ then added to the media and the packaging cell ⁇ are transduced with the vector.
- the packaging cells now produce infectious viral particles containing the gene (the packaging cells are now referred to as producer cells) .
- the engineered fibroblast ⁇ are then injected into the host, either alone or after having been grown to confluence on cytodex 3 microcarrier beads.
- the fibroblasts now produce the protein product.
- mice 16 week old C57B1/6 mice (about 20 g) .
- 3 mice were injected i.p. daily with 1 mg/kg MCP-4 or saline for 2 day ⁇ and analyzed 24 hour ⁇ after the last injection.
- another 3 mice were injected i.p. daily with 1 mg/kg MCP-4 or saline for 4 days and analyzed 24 hours after the last injection.
- the blood of each animal wa ⁇ collected by cardiac puncture and the mice were ⁇ acrificed to obtain bone marrow and ⁇ pleen ⁇ .
- the indicated number of cells from each of the tissues was then plated in duplicates in agar-containing medium in the presence of 5 ng/ml IL-3, 50 ng/ml SCF, 5 ng/ml M-CSF and 10 ng/ml IL-lc. and incubated for 14 days.
- the data from the different animals were pooled and expre ⁇ ed a ⁇ mean ⁇ S.D.
- the results of both experiments shows that MCP-4 mobilize stem cells from bone marrow to peripheral blood [Tables 1 and 2] .
- the frequency of HPP-CFC, LPP-CFC and immature cells in peripheral blood increased significantly over the controls.
- Example 6 MCP-4 as a Mveloprotectant a ⁇ ainst cvto ⁇ ine arabinoside
- Lin- cells were plated (1 x 10 5 cell/ml) in a growth medium that was supplemented with 5 ng/ml mou ⁇ e IL-3, 50 ng/ml mouse SCF (column 1); IL-3, SCF and 100 ng/ml MCP-4 (column 2) ; or IL-3, SCF and 100 ng/ml of the irrelevant protein HG200-3-B (column 3) .
- IL-3 50 ng/ml mouse SCF
- MCP-4 columnumn 2
- IL-3 SCF and 100 ng/ml of the irrelevant protein HG200-3-B
- the resulting population of cells (Lin.- cells) were resuspended (1x10 s cells/ml) in a growth medium containing IL-3 (5 ng/ml) , SCF (50 ng/ml) , GM-CSF (5 ng/ml) , M-CSF (5 ng/ml) and IL-l ⁇ (10 ng/ml) and 1 ml of thi ⁇ cell ⁇ uspension was di ⁇ pen ⁇ ed into culture tube ⁇ .
- a set of duplicate cultures received no chemokine; (2) duplicate cultures with MCP-4 at 100 ng/ml; and (3) duplicate cultures with an irrelevant protein at 100 ng/ml. All cultures were incubated in a tis ⁇ ue culture incubator for 48 hour ⁇ , at which point one culture from each ⁇ et received 5-Fluorouracil at 100 ⁇ g/ml and incubation was continued for additional 24 hours. All cultures were then harvested, washed three times with HBSS, and then a ⁇ ayed for the presence of the HPP-CFC & LPP-CFC as described in the legend to Figure 5.
- Percent protection is expres ⁇ ed a ⁇ number of colonie ⁇ detected in culture ⁇ incubated in the presence of 5-FU divided by the number of colonies found in cultures incubated without 5-FU x 100. Data are expressed as Mean ⁇ SD. Two experiments were performed and each assay was in duplicates. See Figure 7.
- Example 8 MCP-4 effect on cortical neuronal ⁇ urvival
- Sprague-Dawley rat ⁇ at ge ⁇ tation day 17 were sacrificed and the cortex wa ⁇ removed and the meninge ⁇ were carefully pealed away from the cortical issue pieces.
- Single cell suspensions were prepared and the cells were plated in medium containing 5% horse serum at a density of 20,000 cell ⁇ /well. After 24 hour ⁇ the serum containing medium was removed and ⁇ erum-free medium wa ⁇ added to the cultures. Included in the serum-free cultures was a concentration of MCP-4 a ⁇ shown in Figure 8.
- the MCP-4 used i ⁇ an MCP-4 polypeptide encoded by the polynucleotide sequence as shown in SEQ ID NO:l of the application. The medium was changed every other day and MCP-4 was added again. The neurons were maintained in culture for 6 days prior to the viability assay.
- MOLECULE TYPE DNA (genomic)
- AGC TAC CAG CTG TCC AGC AGG AGC ACA TGC CTC AAG GGA GGA GTG ATC 192 Ser Tyr Gin Leu Ser Ser Arg Ser Thr Cys Leu Lys Gly Gly Val lie 50 55 60
- MOLECULE TYPE DNA (genomic)
- MOLECULE TYPE DNA (genomic)
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AU65413/96A AU6541396A (en) | 1995-06-07 | 1996-06-07 | Monocyte chemotactic protein-4 |
EP96925259A EP0832112A4 (en) | 1995-06-07 | 1996-06-07 | Monocyte chemotactic protein-4 |
JP9502196A JPH11507237A (en) | 1995-06-07 | 1996-06-07 | Monocyte chemotactic protein-4 |
MXPA/A/1997/009192A MXPA97009192A (en) | 1995-06-07 | 1997-11-27 | Protein 4 chemotherapy of monoci |
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US08/479,126 US5866373A (en) | 1995-04-21 | 1995-06-07 | Polynucleotide encoding a human chemotactic protein |
US08/479,126 | 1995-06-07 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1998009171A1 (en) * | 1996-08-28 | 1998-03-05 | Smithkline Beecham Corporation | Novel chemokine receptor inhibition assay |
WO1998044118A1 (en) * | 1997-03-31 | 1998-10-08 | Human Genome Sciences, Inc. | Chemokine beta-6 |
US6075124A (en) * | 1994-05-16 | 2000-06-13 | Human Genome Sciences, Inc. | Human chemotactin protein |
US6100389A (en) * | 1995-04-21 | 2000-08-08 | Human Genome Sciences, Inc. | Polynucleotides encoding a human chemotactic protein |
US6100387A (en) * | 1997-02-28 | 2000-08-08 | Genetics Institute, Inc. | Chimeric polypeptides containing chemokine domains |
US6852508B1 (en) | 1997-02-28 | 2005-02-08 | Genetics Institute, Llc | Chemokine with amino-terminal modifications |
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CN101319010B (en) * | 2000-02-14 | 2013-04-10 | 扶桑药品工业株式会社 | Novel scavenger receptor |
TWI288779B (en) * | 2002-03-28 | 2007-10-21 | Blasticon Biotech Forschung | Dedifferentiated, programmable stem cells of monocytic origin, and their production and use |
Citations (1)
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US5179078A (en) * | 1989-05-12 | 1993-01-12 | Dana Farber Cancer Institute | Method of suppressing tumor formation in vivo |
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IL92937A0 (en) * | 1989-01-31 | 1990-09-17 | Us Health | Human derived monocyte attracting protein,pharmaceutical compositions comprising it and dna encoding it |
FR2669996B3 (en) * | 1990-11-30 | 1993-11-05 | Verney Carron Sa | PROJECTILE FOR LARGE-CALIBER FIREARMS AMMUNITION. |
EP0767796B1 (en) * | 1994-05-16 | 2001-09-26 | Human Genome Sciences, Inc. | Chemotactic protein |
JP2001519757A (en) * | 1995-10-24 | 2001-10-23 | スミスクライン・ビーチャム・コーポレイション | Novel chemokines for stem cell mobilization |
-
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US5179078A (en) * | 1989-05-12 | 1993-01-12 | Dana Farber Cancer Institute | Method of suppressing tumor formation in vivo |
Non-Patent Citations (5)
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FURUTANIY.ETAL.: "Cloning and Sequencing of the cDNA for Human Monocyte Chemotactic and Activating Factor (MCAF),", BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, ACADEMIC PRESS INC. ORLANDO, FL, US, vol. 159, no. 1, 1 January 1989 (1989-01-01), US, pages 249 - 255, XP002168895, ISSN: 0006-291X, DOI: 10.1016/0006-291X(89)92430-3 * |
ROLLINS B J, ET AL.: "THE HUMAN HOMOLOG OF THE JE GENE ENCODES A MONOCYTE SECRETORY PROTEIN", MOLECULAR AND CELLULAR BIOLOGY., AMERICAN SOCIETY FOR MICROBIOLOGY, WASHINGTON., US, vol. 09, no. 11, 1 November 1989 (1989-11-01), US, pages 4687 - 4695, XP001024076, ISSN: 0270-7306 * |
See also references of EP0832112A4 * |
YOSHIMURA T, TAKEYA M, TAKAHASHI K: "MOLECULAR CLONING OF RAT MONOCYTE CHEMOATTACTANT PROTEIN-1 (MCP-1) AND ITS EXPRESSION IN RAT SPLEEN CELLS AND TUMOR CELL LINES", BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, ACADEMIC PRESS INC. ORLANDO, FL, US, vol. 174, no. 02, 31 January 1991 (1991-01-31), US, pages 504 - 509, XP001024077, ISSN: 0006-291X, DOI: 10.1016/0006-291X(91)91445-I * |
YOSHIMURA T. ET AL.: "Full-Length cDNA Cloning, Expression in Mitogen-Stimulated Blood Mononuclear Leukocytes and Sequence Similarity to Mouse Competence Gene JE", FEBS LETTERS., ELSEVIER, AMSTERDAM., NL, vol. 244, no. 2, 1 January 1989 (1989-01-01), NL, pages 487 - 493, XP002168894, ISSN: 0014-5793, DOI: 10.1016/0014-5793(89)80590-3 * |
Cited By (12)
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US6075124A (en) * | 1994-05-16 | 2000-06-13 | Human Genome Sciences, Inc. | Human chemotactin protein |
US6419917B1 (en) | 1994-05-16 | 2002-07-16 | Human Genome Sciences, Inc. | Human chemotactic protein |
US6867006B2 (en) | 1994-05-16 | 2005-03-15 | Human Genome Sciences, Inc. | Antibodies to human chemotactic protein |
US6100389A (en) * | 1995-04-21 | 2000-08-08 | Human Genome Sciences, Inc. | Polynucleotides encoding a human chemotactic protein |
WO1998009171A1 (en) * | 1996-08-28 | 1998-03-05 | Smithkline Beecham Corporation | Novel chemokine receptor inhibition assay |
US6100387A (en) * | 1997-02-28 | 2000-08-08 | Genetics Institute, Inc. | Chimeric polypeptides containing chemokine domains |
US6730296B1 (en) | 1997-02-28 | 2004-05-04 | Wyeth | Chimeric polypeptides containing chemokine domains |
US6852508B1 (en) | 1997-02-28 | 2005-02-08 | Genetics Institute, Llc | Chemokine with amino-terminal modifications |
US7396911B2 (en) | 1997-02-28 | 2008-07-08 | Genetics Institute, Llc | Chimeric polypeptides containing chemokine domains |
WO1998044118A1 (en) * | 1997-03-31 | 1998-10-08 | Human Genome Sciences, Inc. | Chemokine beta-6 |
US6028169A (en) * | 1997-03-31 | 2000-02-22 | Human Genome Sciences, Inc. | Chemokine β-6 antagonists |
US6379926B1 (en) | 1997-03-31 | 2002-04-30 | Human Genome Sciences, Inc. | Polynucleotides encoding chemokine β-6 antagonists |
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CA2224099A1 (en) | 1996-12-19 |
US5880263A (en) | 1999-03-09 |
KR19990022330A (en) | 1999-03-25 |
EP0832112A1 (en) | 1998-04-01 |
EP0832112A4 (en) | 2001-05-09 |
MX9709192A (en) | 1998-03-31 |
JPH11507237A (en) | 1999-06-29 |
AU6541396A (en) | 1996-12-30 |
US5866373A (en) | 1999-02-02 |
CN1192751A (en) | 1998-09-09 |
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