WO2015024512A1 - 阿可拉定在制备用于治疗flt-3有关疾病的药物中的用途 - Google Patents
阿可拉定在制备用于治疗flt-3有关疾病的药物中的用途 Download PDFInfo
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- WO2015024512A1 WO2015024512A1 PCT/CN2014/084781 CN2014084781W WO2015024512A1 WO 2015024512 A1 WO2015024512 A1 WO 2015024512A1 CN 2014084781 W CN2014084781 W CN 2014084781W WO 2015024512 A1 WO2015024512 A1 WO 2015024512A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/365—Lactones
- A61K31/366—Lactones having six-membered rings, e.g. delta-lactones
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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
- A61P35/02—Antineoplastic agents specific for leukemia
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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
- A61P37/02—Immunomodulators
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- the present invention relates to the use of acrotadine for the preparation of a medicament for the treatment of a disease associated with FLT-3, and belongs to the field of medicine.
- FLT-3 is a family member of the type III receptor tyrosine kinase and is a signaling molecule. FLT-3 is expressed in various tissues such as liver, spleen, lymph, brain, placenta and gonads, and is also expressed in normal myeloid and lymphoid cell precursors, and is expressed in many hematopoietic malignancies. Its signal transduction pathway is associated with many tumor conduction pathways. Therefore, FLT-3 has become an ideal anti-tumor drug target. Studies have shown that it is expressed in 70-90% of acute myeloid leukemia and acute lymphoblastic leukemia cells.
- FLT-3 As a signaling molecule, FLT-3 is susceptible to mutations, including: internal tandem replication of the membrane domain, kinase domain mutations and near-membrane domain point mutations, triggering the sustained activation of autoreceptors, and continuing to activate a series of downstream Signaling pathways lead to abnormal proliferation of leukemia cells. And FLT3-ITD mutation is one of the important reasons leading to poor prognosis, high recurrence rate and low survival rate of acute leukemia.
- Acrolatine also known as icariin, is a new effective monomer obtained by enzymatic conversion of the main active ingredient icariin extracted from Chinese medicinal herbs, and its structural formula is as shown in the following formula (I). :
- a method for preparing the compound is disclosed in CN101302548B.
- the method uses icariin as a raw material, and is hydrolyzed by ⁇ -glucosidase, and the precipitate obtained by centrifugation of the hydrolyzate is dissolved in acetone, and the supernatant is obtained by centrifugal filtration. The supernatant obtained by centrifugation was again recrystallized with water to obtain pure extract of icariin.
- the present inventors have surprisingly found that acrolatine is capable of treating diseases associated with FLT-3.
- One aspect of the invention provides the use of acrotadine for the manufacture of a medicament for the treatment of a FLT-3 related disorder.
- the FLT-3 related diseases include acute myeloid leukemia, acute lymphocytic leukemia or autoimmune system diseases.
- the autoimmune system disease comprises lupus erythematosus.
- the drug is an oral preparation or an injection.
- the injection is an intramuscular injection or an intravenous injection.
- the beneficial effects of the present invention are:
- the acrolatine of the present invention has achieved very good effects in treating diseases related to FLT-3, especially for acute myeloid leukemia, acute lymphocytic leukemia or autoimmune diseases, Akola Both have shown good pharmaceutical effects. Therefore, the present invention provides a broad prospect for the further application of acaradine.
- acrolatin is derived from a single monomer of Chinese herbal medicine Epimedium, the raw materials of acrolatin are easily available, with little side effects and high safety.
- Figure 1 shows the inhibition rate of acrolatine on FLT-3 kinase
- Figure 2 is a graph showing the inhibition curve of acrolatine on proliferation of acute myeloid leukemia cells MV-4-11 overexpressing FLT-3;
- Figure 3 is a graph showing the apoptosis effect of acrolatine on MV-4-11 of acute myeloid leukemia cells overexpressing FLT-3, and Figures 3A, 3B, 3C, 3D, 3E and 3F are shown at 0 ⁇ , 10 ⁇ , 15 ⁇ , respectively. Apoptosis detected by flow cytometry after exposure to atropine at a concentration of 20 ⁇ , 25 ⁇ , 30 ⁇ for 24 hours;
- Figure 4 is a graph showing the effect of acolidine on the cell cycle of MV-4-11.
- Figure 4 ⁇ , Figure 4 ⁇ , Figure 4C, Figure 4D, Figure 4E and Figure 4F show that MV-4-11 cells are at 0 ⁇ , 0.625 ⁇ , Flow cytometry was used to detect cell cycle distribution after exposure to 1.25 ⁇ , 2.5 ⁇ , 5 ⁇ , ⁇ concentrations of acrolatine for 48 hours;
- Figure 5 is a graph showing the inhibition curve of alecabadine on subcutaneous allograft tumors of MV-4-11 cells in NOD/SCID mice.
- 5A is where the tumor volume reached about 300mm 3, the start of administration, A may affect tumor growth cephradine;
- FIG. 5B is a showing tumor volume reached about 215mm 3, the start of administration, given A pull on tumor growth influences;
- Figure 6 is a graph showing the inhibition of acyclodine on FLT-3 overexpressing acute lymphoblastic leukemia cell line RS4;
- FLT-3 related disease refers to diseases related to or involving FLT-3 activity, such as FLT-3 overexpression and abnormal activation, and disorders associated with these diseases.
- FLT-3 overexpressing refers to 1. expressing FLT-3 in cells that are generally not expected to express FLT-3; 2. causing unwanted cell proliferation, thereby increasing FLT-3 expression; 3. FLT- The cell expression level of 3 exceeded the normal level.
- a disease abnormally activated by FLT-3 refers to a disease caused by an abnormally high amount of FLT-3 or a mutation in FLT-3.
- acute myeloid leukemia refers to the accumulation of immature myeloid cells in the bone marrow, resulting in bone marrow hematopoiesis being inhibited by the disease.
- acute lymphocytic leukemia refers to a hematological malignancy caused by the infinite proliferation of undifferentiated or poorly differentiated lymphocytes in hematopoietic tissue.
- autoimmune system disease refers to a disease caused by the body's immune response to its own antigen resulting in damage to its own tissues. These include, but are not limited to, organ-specific autoimmune diseases and systemic autoimmune diseases.
- organ-specific autoimmune system diseases includes, but is not limited to, chronic lymphatic thyroiditis, hyperthyroidism, insulin-dependent diabetes mellitus, myasthenia gravis, chronic ulcerative colitis, pernicious anemia, semi-chronic atrophic gastritis, pulmonary hemorrhage Nephritis syndrome, pemphigus vulgaris, pemphigoid, primary biliary cirrhosis, multiple sclerosis, acute idiopathic polyneuritis, etc.
- systemic autoimmune system disorders includes, but is not limited to, systemic lupus erythematosus, rheumatoid arthritis, systemic vasculitis, scleroderma, pemphigus, dermatomyositis, mixed mustard tissue disease, autoimmune Hemolytic anemia, thyroid autoimmune disease, ulcerative colitis, etc.
- the acute myeloid leukemia cell MV-4-11 of the present invention was purchased from the American Type Culture Collection (ATCC) commercial number CRL-9591, and the FLT-3 expression of this cell line was positive.
- FLT-3 kinase was purchased from Carna Bioscience Ltd., model number 08-154, batch number 07CBS-2350.
- the acute lymphoblastic leukemia cell RS4; 11 of the present invention was purchased from ATCC, commercial number CRL-1873, and the FLT-3 expression of this cell line was positive.
- mice were non-obese diabetic/severe combined immunodeficiency (Nod/SCID) mice, 6 weeks, weighing 18.0-22.0 g, male, purchased from Beijing Weitong Lihua Experimental Animal Technology Co., Ltd., feeding and sterile independent air supply.
- Cage which is a sterile feed specially formulated for mice, free to drink pure water.
- Acrolatine was prepared by the method of Example 1.
- a method for preparing epimedium is disclosed in the patent publication CN 101302548.
- icariin is used as a raw material, and hydrolysis is carried out by ⁇ -glucosidase, and the precipitate obtained by centrifugation of the hydrolyzate is dissolved in acetone, and the supernatant is obtained by centrifugal filtration. The supernatant obtained by centrifugation was again recrystallized with water to obtain pure cumin.
- the icariin in the present invention is purchased from Shaanxi Jiahe Plant Chemical Co., Ltd., and the purity is 90%.
- polyoxyethylene lauryl ether (0.0015% Bnj-35) (purchased from Shenzhen Shidejia Technology Co., Ltd., trade name: Bridger-35, product number BRIJ-35), 10mM M g C12 and 2 mM dithiothreitol (DTT) (purchased from Solvay Technology Co., Ltd., trade name dithiothreitol, commercial number D8220-1).
- 0.0015% (m/v) purchased from Anheji Chemical Co., Ltd., trade name 4-hydroxyethylpiperazineethanesulfonic acid, commercial product number A010752; >, polyoxyethylene lauryl ether (0.0015% Brij-35), 0.2%
- the acrolatine was dissolved in 100% DMSO to a 10 mM solution, and the 10 mM acorramine solution was diluted to the corresponding concentration with 10% DMSO according to the concentration of the arazidine solution to be tested.
- the reaction wells of the enzyme-free control group, the reaction wells of the control group and the reaction wells of the drug group were separately set.
- 5 L of 10% dimethyl sulfoxide (DMSO), 1 (L 1 -fold kinase buffer solution) was added to the reaction well of the enzyme-free control group;
- 5 L of 10% dimethyl sulfoxide (DMSO) was added to the control well.
- DMSO dimethyl sulfoxide
- DMSO 10% dimethyl sulfoxide
- inhibition rate (control group conversion rate - drug group conversion rate) I (control group conversion rate - no enzyme live control conversion rate) * 100%
- the axeidine-induced FLT-3 kinase inhibition curve shows that alcondamine has an inhibitory effect on FLT-3 kinase with an IC50 of 28 nM. Because FLT-3 is expressed in both acute myeloid leukemia and acute lymphocytic leukemia, it is believed that acrolatine has a therapeutic effect on both diseases.
- a medium suspension of 8.0*104 cells/ml was prepared using a medium, and each well was added to a 96-well plate. After 24 hours of culture, different concentrations of acrolatine were added to each well, with 4 parallel wells per concentration. After 72 hours of incubation, 20 ⁇ l of a 50 mg/ml sputum-free serum-free medium solution was added to each well. After 4 hours of culture, the medium was discarded, 200 W of DMSO was added to each well, and the mixture was gently shaken for 10 minutes. After the formazan was sufficiently dissolved, the cell absorbance (OD value) was measured at a wavelength of 570 nm using a microplate reader.
- the final concentration of acrolatine was set to 169.66 ⁇ , 84.83 ⁇ , 42.41 ⁇ , 21.21 ⁇ , 10.6 ⁇ , 5.3 ⁇ , 2.65 ⁇ , 1.33 ⁇ , 0.66 ⁇ , and the growth of MV-4-11 cells in each exposure concentration was calculated.
- the MTT assay showed that MV-4-11 cells were exposed in 169.66 ⁇ , 84.83 ⁇ , 42.41 ⁇ , 21.21 ⁇ , 10.6 ⁇ , 5.3 ⁇ , 2.65 ⁇ , 1.33 ⁇ , 0.66 ⁇ acortadine.
- the cell growth inhibition rates were 88.12%, 84.17%, 87.14%, 76.22%, 55.44%, 32.72%, 30.20%, 13.27%, 5.56%, and IC50 was 7.48 ⁇ (see Figure 2).
- PS Phosphatidylserine
- Annexm V apoptosis detection agent
- PI propidium iodide
- the proportion of live B3 in the ⁇ acoladine group was 88.2%, the ratio of early apoptotic cells ( ⁇ 4 region) was 8.2%, and the proportion of middle and late apoptotic cells ( ⁇ 2 region) was 3.3%, dead cells (B1)
- the ratio of the region is 0.2% (see Figure 3 ⁇ ); the ratio of living cells ( ⁇ 3 region) in the ⁇ acoladine group is 72.9%, and the proportion of early apoptotic cells ( ⁇ 4 region) is 17.3%, middle and late apoptotic cells ( ⁇ 2 region)
- the ratio is 9.5%, the proportion of dead cells (B1 region) is 0.2% (see Figure 3 ⁇ ); the ratio of living cells ( ⁇ 3 region) in the 15 ⁇ acapradine group is 59.7%, early apoptotic cells ( ⁇ 4 region)
- the ratio was 23.6%, the proportion of apoptotic cells in the middle and late stages ( ⁇ 2 region) was 16.4%, and the proportion of dead cells (B1 region) was
- ⁇ can enter the intracellular and nucleic acid binding.
- the fluorescence of the dye is proportional to the DNA content in the nucleus. Therefore, the ratio of the amount of DNA in the cell can be measured by flow cytometry.
- the percentage of cells in the G0/G1 phase ie, the ratio of cells in the quiescent phase and the pre-DNA synthesis phase
- the double fluorescence amount represents the G2/M phase (S ⁇ : DNA).
- S ⁇ DNA
- the flowmeter was named Cytomics FC500 (purchased from Beckman Coulter, USA), ribonuclease (RNaseA was purchased from Sigma, USA), propidium iodide (PI, purchased from Sigma, USA).
- MV-4-11 cells were at 0 ⁇ , 0.625 ⁇ , 1.25 ⁇ , 2.5 ⁇ , 5 ⁇ and
- the cells were collected, centrifuged and the medium removed, washed twice with phosphate buffered saline (PBS), resuspended in 1 ml of 70% ethanol, fixed overnight at -20 ° C, and removed by centrifugation.
- PBS phosphate buffered saline
- EXPERIMENTAL RESULTS Since MV-4-11 cells had a higher apoptotic rate of exposure to aculeidine above ⁇ for 24 hours, see Example 5, so reduce the drug concentration and choose ⁇ , 0.625 ⁇ , 1.25 ⁇ , 2.5 ⁇ , 5 ⁇ . ⁇ abradine, MV-4-11 cells were exposed to the above concentrations of acrolatine for 48 hours, flow cytometry to detect cell cycle distribution, the results showed that with the increase of drug concentration, the proportion of apoptotic cells Apo And the ratio of 0 () / 0 phase 1 cells increased (see Figure 4).
- the cultured MV-4-11 cells were collected, centrifuged and the medium was removed, and a 4*10 7 /ml cell suspension was prepared with an appropriate amount of physiological saline, mixed with Matrigel at a ratio of 1:1, and inoculated into non-obese diabetes.
- / Severe combined immunodeficiency NOD/SCID mice were subcutaneously in the right forelimb, 0.2 ml (8 * 10 6 /pc) per mouse. The blank group was given with corn oil.
- Matrigel (trade name Matrigel was purchased from BD Biocoat, USA).
- MV-4-11 cells were inoculated subcutaneously in NOD/SCID mice, and the tumors reached about 300 mm 3 in about 2 weeks.
- the cells were divided into groups and administered continuously for 18 days.
- the doses were 12.5 mg/kg and 25 mg/d, respectively.
- the inhibition rates of kg and 50 mg/kg acrolatine tumor growth were 20.4%, 37.4%, and 47.2% (PO.001), respectively, as shown in Figure 5A.
- L00% ; Vc is the control tumor volume, Vt is the tumor volume of the test group.
- Tumor volume l / 2 * a * ba is the long diameter of the tumor block, b is the short diameter of the tumor block :).
- the inhibition rates of tumor growth at 12.5 mg/kg, 25 mg/kg, and 50 mg/kg were 44.6% (PO.05), 43.7%, and 50.4% (PO.05), respectively, as shown in Figure 5B.
- acrolatine has a good inhibition rate for tumors caused by MV-4-11 cells, especially when the tumor volume is small, and the inhibition rate of the drug is higher.
- RPMI 1640 medium purchased from Gibco Life Technologies, USA
- fetal bovine serum purchased from Gibco Life Technologies, USA
- C0 2 cell culture medium was purchased from Heraeus, Germany
- tetrazolium blue purchased from Sigma, USA
- DMSO purchased from Sigma, USA
- Cell culture method Human acute lymphoblastic leukemia RS4; 11 cells cultured in RPMI 1640 medium containing 10% fetal bovine serum, placed in 37 ° C, 5% CO 2 cell incubator, passed through the next day, change the liquid .
- the cells After culturing the cultured RS4; 11 cells, the cells were mixed with a medium of 8.0*10 4 cells/ml, and added to a 96-well plate at a per ⁇ hole. After 24 hours of culture, different concentrations of aconradin were added to each well, with 4 parallel wells per concentration. After 72 hours of culture, 20 ⁇ l of a 50 mg/ml MTT serum-free medium solution was added to each well. After 4 hours of culture, the medium was discarded, 20 ( ⁇ 1 DMSO was added per well, and the mixture was gently shaken for 10 minutes. After the formazan was fully dissolved, the cell absorbance (OD value) was measured at a wavelength of 570 nm using a microplate reader.
- OD value cell absorbance
- the final concentrations of tartar were 88.2215 ⁇ , 44.11075 ⁇ , 22.05538 ⁇ , 11.02769 ⁇ , 5.513844 ⁇ , 2.756922 ⁇ , 1.378461 ⁇ , 0.68923 ⁇ , and the RS4 in each exposure concentration was calculated; 11 cell growth inhibition rate, by Origin 5.0 software The cell up inhibition rate curve was fitted and the half effect inhibitory concentration IC 5Q was obtained .
- the results of MTT assay showed that RS4; 11 cells were exposed for 72 hours in the concentration of 88.2215 ⁇ , 44.11075 ⁇ , 22.05538 ⁇ , 11.02769 ⁇ , 5.513844 ⁇ , 2.569922 ⁇ , 1.378461 ⁇ , 0.68923 ⁇ acortadine, cells.
- the growth inhibition rates were 97.3637%, 98.00679%, 91.9099%, 77.55591%, 72.00618%, 26.09831%, 3.821215%, 1.618376%, IC 5 , respectively . It is 3.82009 ⁇ .
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