WO2013111770A1 - 新規抗悪性腫瘍剤 - Google Patents
新規抗悪性腫瘍剤 Download PDFInfo
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- WO2013111770A1 WO2013111770A1 PCT/JP2013/051275 JP2013051275W WO2013111770A1 WO 2013111770 A1 WO2013111770 A1 WO 2013111770A1 JP 2013051275 W JP2013051275 W JP 2013051275W WO 2013111770 A1 WO2013111770 A1 WO 2013111770A1
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- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
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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
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- A61P35/02—Antineoplastic agents specific for leukemia
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- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
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- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
- C07K16/3015—Breast
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- C07—ORGANIC CHEMISTRY
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- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
- C07K16/3023—Lung
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- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
- C07K16/303—Liver or Pancreas
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
- C07K16/3046—Stomach, Intestines
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
- C07K16/3069—Reproductive system, e.g. ovaria, uterus, testes, prostate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/574—Immunoassay; Biospecific binding assay; Materials therefor for cancer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/574—Immunoassay; Biospecific binding assay; Materials therefor for cancer
- G01N33/57484—Immunoassay; Biospecific binding assay; Materials therefor for cancer involving compounds serving as markers for tumor, cancer, neoplasia, e.g. cellular determinants, receptors, heat shock/stress proteins, A-protein, oligosaccharides, metabolites
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
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- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/20—Immunoglobulins specific features characterized by taxonomic origin
- C07K2317/21—Immunoglobulins specific features characterized by taxonomic origin from primates, e.g. man
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/52—Predicting or monitoring the response to treatment, e.g. for selection of therapy based on assay results in personalised medicine; Prognosis
Definitions
- the present invention relates to a novel antitumor agent containing, as an active ingredient, a substance that targets a ribosomal protein whose expression is enhanced in malignant tumor cells. Furthermore, the present invention relates to a method for producing a substance targeting a ribosomal protein contained as an active ingredient in a novel antitumor agent.
- liver carcinogenesis in autoimmune hepatitis is reported to be about 0.7% / year (Aliment Pharmacol Ther 2006; 24: 1197), and 3% / year of chronic hepatitis C (Ann Intern Med 1999; 131: 174) is clearly lower.
- Ribosomal protein R29 which is a ribosomal protein, is a colorectal cancer (Non-patent document 1), liver cancer (Non-patent document 2), stomach cancer (Non-patent document 3), thyroid cancer (Non-patent document 4), breast cancer (Non-patent document). It has been reported that expression is enhanced in various malignant tumor cells such as literature 5).
- RPL29 is a membrane protein expressed on the cell surface, and decreasing the expression of RPL29 increases the number of cells that fall into apoptosis (Non-patent Document 6) and induces cell differentiation (Non-patent Document 1). It has been reported.
- RPS4X Ribosomal protein S4, X-linked
- a ribosomal protein Ribosomal protein S4, X-linked
- RPL29 and RPS4X have improved the tumor.
- An object of the present invention is to provide a highly safe antitumor agent that is a molecular target drug for malignant tumors.
- this invention consists of the following. 1. An anti-malignant tumor agent comprising as an active ingredient a substance that targets a ribosomal protein whose expression is enhanced in malignant tumor cells. 2. 2. The antineoplastic agent according to item 1 above, wherein the ribosomal protein whose expression is enhanced in malignant tumor cells is RPL29 and / or RPS4X. 3. The substance that targets RPL29 is an anti-RPL29 antibody, a substance that can activate or enhance endogenous anti-RPL29 antibody present in vivo, a substance that can induce the production of anti-RPL29 antibody in vivo, or an RPL29 antagonist. 3. The antineoplastic agent according to item 2 above. 4).
- the substance that targets RPS4X is an anti-RPS4X antibody, a substance that can activate or enhance an endogenous anti-RPS4X antibody present in the living body, a substance that can induce anti-RPS4X antibody production in the living body, or an RPS4X antagonist.
- a substance capable of activating or enhancing the endogenous anti-RPL29 antibody and / or anti-RPS4X antibody present in the living body is an immunostimulating agent, and a substance capable of inducing the production of anti-RPL29 antibody and / or anti-RPS4X antibody in the living body 5.
- Malignant tumors liver cancer, pancreatic cancer, breast cancer, colon cancer, non-small cell lung cancer, small cell lung cancer, prostate cancer, gastric cancer, thyroid cancer, ovarian cancer, salivary adenoid cystic cancer, acute myeloid leukemia, acute lymphoblastic leukemia, chronic Lymphocytic leukemia, chronic myelogenous leukemia, malignant lymphoma, mucinous liposarcoma, glioblastoma, alveolar rhabdomyosarcoma, Wilms tumor, oligodendroglioma, adrenocortical carcinoma, multiple myeloma, medulloblastoma 6.
- the antineoplastic agent according to any one of 1 to 5 above, which is one or more types of cancer selected from endometrial cancer, esophageal cancer and Ewing sarcoma. 7).
- a method for examining a malignant tumor comprising measuring an anti-RPL29 antibody titer and / or an anti-RPS4X antibody titer in a biological specimen. 8).
- Malignant tumors liver cancer, pancreatic cancer, breast cancer, colon cancer, non-small cell lung cancer, small cell lung cancer, prostate cancer, gastric cancer, thyroid cancer, ovarian cancer, salivary adenoid cystic cancer, acute myeloid leukemia, acute lymphoblastic leukemia, chronic Lymphocytic leukemia, chronic myelogenous leukemia, malignant lymphoma, mucinous liposarcoma, glioblastoma, alveolar rhabdomyosarcoma, Wilms tumor, oligodendroglioma, adrenocortical carcinoma, multiple myeloma, medulloblastoma 9.
- the examination method according to 7 or 8 above which is one or more types of cancer selected from endometrial cancer, esophageal cancer, and Ewing sarcoma.
- the anti-neoplastic agent of the present invention which contains as an active ingredient a substance that targets a ribosomal protein whose expression is enhanced in malignant tumor cells, can suppress the growth of malignant tumor cells.
- the substance targeting the ribosomal protein whose expression is enhanced in the malignant tumor cell of the present invention is one of the defense mechanisms that do not lead to the pathogenesis that is considered to be inherent in the living body even if the malignant tumor cell is formed. It is considered as a substance.
- An antineoplastic agent containing such a substance as an active ingredient is a highly safe drug and useful.
- the prognosis of a cancer patient can be predicted by measuring the amount of a substance that targets ribosomal protein whose expression is enhanced in malignant tumor cells, for example, in the case of an antibody, the antibody titer. It is very useful in that it can provide an optimal treatment method for cancer patients according to the results.
- FIG. 4 is a photograph showing the expression of RPL29 and RPS4X in various human liver cancer cell lines.
- Reference Example 4 It is the photograph which confirmed the expression of RPL29 in a human pancreatic cancer cell line.
- Example 2 It is a figure which shows the growth inhibitory effect of the hepatoma cell line PLC / PRF / 5 by an anti- RPL29 antibody.
- Example 3 It is the photograph which confirmed the various intracellular signal change in the liver cancer cell line Huh7 by an anti- RPL29 antibody.
- Example 4 It is a figure which shows the correlation of the anti-RPL29 antibody titer in serum, and the growth inhibitory effect of hepatoma cell line Huh7 by serum IgG.
- Example 5 It is a figure which shows the correlation of the anti-RPL29 antibody titer in serum, and the growth inhibitory effect of hepatoma cell line PLC / PRF / 5 by serum IgG.
- Example 5 It is a figure which shows the growth inhibitory effect of hepatoma cell line Huh7 by serum anti- RPL29 antibody titer and serum IgG.
- Example 6 It is a figure which shows the growth inhibitory effect of hepatoma cell line PLC / PRF / 5 by serum anti-RPL29 antibody titer and serum IgG.
- Example 6) It is a figure which shows the growth inhibitory effect of the pancreatic cancer cell line Panc-1 by an anti- RPL29 antibody.
- Example 7 It is a figure which shows the growth inhibitory effect of the pancreatic cancer cell line AsPC-1 by an anti- RPL29 antibody.
- Example 4 is a photographic diagram showing changes in various intracellular signals in pancreatic cancer cell line AsPC-1 by anti-RPL29 antibody.
- Example 9 It is a figure which shows the anti- RPL29 antibody titer in serum in a surgically performed pancreatic cancer patient.
- Example 10 It is a figure which shows the relationship between the serum anti- RPL29 antibody titer in a surgically performed pancreatic cancer patient, and the postoperative recurrence of each patient.
- Example 10 It is a figure which shows the growth inhibitory effect of a pancreatic cancer cell line and a colon cancer cell line by IgG in serum of AIH-31.
- Example 11 It is a figure which shows the growth inhibitory effect of a pancreatic cancer cell line and a colon cancer cell line by IgG in serum of AIH-45.
- Example 11 It is a figure which shows the proliferation inhibitory effect of various malignant tumor cell lines by IgG in serum of AIH-31.
- Example 12 It is a figure which shows the proliferation inhibitory effect of various malignant tumor cell lines by IgG in serum of AIH-45.
- Example 12 It is a figure which shows the growth inhibitory effect of various human malignant tumor cell lines by an anti- RPL29 antibody. (Example 13) It is a figure which shows the growth inhibitory effect of the liver cancer cell line Huh7 by an anti- RPS4X antibody.
- Example 14 It is a figure which shows the growth inhibitory effect of a liver cancer cell line and a pancreatic cancer cell line by an anti- RPS4X antibody.
- Example 15 It is a figure which shows the growth inhibitory effect of various human malignant tumor cell lines by an anti- RPS4X antibody.
- Example 16
- the present invention relates to a highly safe anti-malignant tumor agent that is a molecular target drug for malignant tumors, and in particular, contains as an active ingredient a substance that targets a ribosomal protein whose expression is enhanced in malignant tumor cells.
- a highly safe anti-malignant tumor agent that is a molecular target drug for malignant tumors, and in particular, contains as an active ingredient a substance that targets a ribosomal protein whose expression is enhanced in malignant tumor cells.
- an antibody in an autoimmune hepatitis patient serum ie, an immunoglobulin (hereinafter also simply referred to as “IgG”) was adsorbed, eluted and purified using protein G.
- IgG immunoglobulin
- purified IgG solution When purified IgG-containing solution (hereinafter referred to as “purified IgG solution”) was added to the in-vitro culture system of malignant tumor cell lines, the serum-derived purified IgG solution of patients with autoimmune hepatitis suppressed malignant tumor cell growth. It was confirmed that growth was not observed and growth suppression was not observed. Therefore, an antigen-antibody complex was formed by reacting the malignant tumor cell membrane protein extract with IgG in the serum of each patient, and IgG was adsorbed from the reaction solution by protein G, and the adsorbed protein was eluted.
- RPL29 Ribosomal protein L29
- RPS4X Ribosomal protein S4, X-linked
- the ribosome which is the body of the intracellular protein translation apparatus, is composed of 3 to 4 types of RNA (ribonucleic acid) and 50 or more types of ribosomal proteins.
- Ribosomal RNA (rRNA) accounts for approximately two-thirds of the total molecular weight of the ribosome, and proteins account for the remaining one-third. It consists of two large and small subunits. The small subunit is responsible for decoding the genetic code, and the large subunit is responsible for the reaction of extending the peptide chain.
- Ribosomal proteins that constitute the protein translation apparatus are very old proteins in evolution, and are considered to play a role in the construction and protection of the three-dimensional structure of rRNA, helping rRNA to express enzyme activity.
- ribosomal proteins are known to regulate expression during translation by binding to messenger RNA (mRNA).
- mRNA messenger RNA
- ribosomal proteins are a group of proteins that have been in close contact with RNA and have been involved in translation and control, which is the basis of life phenomena.
- the antineoplastic agent of the present invention is characterized by containing as an active ingredient a substance that targets a ribosomal protein whose expression is enhanced in malignant tumor cells.
- the “substance targeting ribosomal protein” contained in the anti-malignant tumor agent of the present invention is one of the defense mechanisms that prevent malignant tumor cells from occurring without causing disease. It is considered as a substance. Since the active ingredient is one of the body defense mechanisms that do not lead to pathogenesis that is considered to be inherent in the living body, it is a highly safe drug and should be used as a therapeutic and / or prophylactic agent for various malignant tumors. Can be useful.
- the “substance targeting ribosomal protein” contained in the antineoplastic agent of the present invention acts as a growth inhibitor of various malignant tumor (cancer) cells.
- the production method of the “substance targeting ribosomal protein” of the present invention is not particularly limited, and may be a method known per se or a novel method developed thereafter.
- ⁇ substances targeting ribosomal proteins '' whose expression is enhanced in malignant tumor cells include (1) antibodies against each substance, and (2) antibodies present in vivo among antibodies against each substance. Examples include substances that can be activated or enhanced, (3) substances that can induce antibody production against each substance in vivo, and (4) antagonists to each substance.
- RPL29 and / or RPS4X which are “ribosomal proteins whose expression is enhanced in malignant tumor cells”
- anti-RPL29 antibody and / or anti-RPS4X antibody as an antibody against each substance
- the substance that can activate or enhance the anti-RPL29 antibody and / or anti-RPS4X antibody present in the living body includes an immunostimulant
- RPL29 and / or in vivo a substance that can induce antibody production against RPS4X includes a vaccine.
- antagonists for each substance include antagonists for RPL29 and / or RPS4X.
- the “anti-RPL29 antibody” may be any antibody that can bind to RPL29, and may be a monoclonal antibody or a polyclonal antibody.
- the antibody type may be a partial peptide capable of antigen-antibody reaction such as Fab, but an intact type antibody is preferable.
- the “anti-RPS4X antibody” may be any antibody that can bind to RPS4X, and may be a monoclonal antibody or a polyclonal antibody.
- the antibody type may be a partial peptide capable of antigen-antibody reaction such as Fab, but an intact type antibody is preferable.
- the antibody as an active ingredient contained in the antineoplastic agent of the present invention is provided as a biological defense mechanism that does not lead to the onset of disease even when malignant tumor cells are formed. Since the active ingredient is considered to be an active ingredient, it is preferably an intact antibody that can usually exist in a living body.
- Antibodies against each of the above substances can be produced by a method known per se.
- the starting material may be a material derived from a natural product, or may follow a technique such as gene recombination.
- the antibody can be produced using a collected biological component as a raw material.
- the collected biological component is not particularly limited as long as it is a biological component capable of producing an anti-RPL29 antibody and / or an anti-RPS4X antibody.
- the biological component is not particularly limited as long as it is a biological component containing the above-described antibody, and examples thereof include blood such as plasma and serum, spinal fluid, lymph, urine, tears, and milk. Suitable biological components include blood components such as plasma and serum, and components containing antibody-producing cells.
- the antibody may be a biological component of a person who is administered the antineoplastic agent of the present invention, or may be a biological component of another person.
- antibody-producing cells can be collected from the collected biological components, and an antibody-producing hybridoma can be prepared by an ordinary method to prepare the antibody.
- in vivo antibody-producing cells include B cells and plasma cells.
- the partner cell for producing a hybridoma may be any cell that can be fused with the antibody-producing cell and proliferate, and may include a cell known per se or a cell to be developed in the future.
- the anti-malignant tumor agent of the present invention containing an anti-RPL29 polyclonal antibody and / or anti-RPS4X polyclonal antibody at a high titer by separating and purifying an antibody component from a serum component, among biological components obtained by blood sampling.
- the biological component may be a malignant tumor cell (cultured cell or tumor cell collected from a patient).
- an immunostimulator against anti-RPL29 antibody and / or anti-RPS4X antibody is a healthy person who is unlikely to develop cancer as a biological defense mechanism that does not cause disease even if malignant tumor (cancer) cells are generated. May be any substance that can further activate or enhance the antibody provided in its own body.
- Examples of the immunostimulatory agent against the anti-RPL29 antibody in vivo and / or the anti-RPS4X antibody in vivo include, for example, activators of antibody-producing cells in vivo, such as IL-4, IL-5, IL-6, IL- 10, IL-13, GM-CSF, TNF- ⁇ , bacteria and their cell components, polysaccharides of plants and fungi, nucleic acids, fat-soluble vitamins, mineral oils and the like.
- Examples of in vivo antibody-producing cells include B cells and plasma cells.
- IL-4, IL-5, IL-6, IL-10, IL-13, GM-CSF, TNF- ⁇ , bacteria and their bacterial components, plant and fungal polysaccharides, nucleic acids, fat-soluble vitamins, mineral oil may be derived from natural products, or can be produced by genetic recombination or chemical synthesis techniques.
- a “vaccine” as a substance capable of inducing antibody production against RPL29 and / or RPS4X in vivo is a protective mechanism that does not lead to disease even when malignant tumor (cancer) cells are generated. It is sufficient that a healthy person who is unlikely to develop has an antigenicity capable of producing an anti-RPL29 antibody and / or an anti-RPS4X antibody having the same action as an antibody provided in his / her own body. Examples of such molecules include RPL29 and / or RPS4X molecules themselves, or partial peptides of these molecules. These vaccines can be produced by any method known per se or developed in the future. For example, the RPL29 and / or RPS4X molecule itself, or a partial peptide of these molecules may be prepared by a genetic recombination technique or by peptide synthesis.
- antagonists to RPL29 and / or RPS4X include antagonists, antagonists, antagonists, blockers, blockers and the like for PL29 and / or RPS4X. It may be a substance that directly acts on RPL29 or RPS4X, or a substance that can inhibit RPL29 or RPS4X by interacting with RPL29 receptor or RPS4X receptor.
- the antineoplastic agent of the present invention can contain a pharmacologically acceptable carrier.
- pharmacologically acceptable carrier used in the above antineoplastic agents include, for example, excipients, disintegrants or disintegration aids, binders, lubricants, coating agents, dyes, diluents, bases. , Solubilizers or solubilizers, tonicity agents, pH adjusters, stabilizers, propellants, and pressure-sensitive adhesives.
- the dosage form of the antineoplastic agent of the present invention may be administered locally or systemically.
- Formulations for parenteral administration may include sterile aqueous or non-aqueous solutions, suspensions, and emulsions.
- non-aqueous diluents are propylene glycol, polyethylene glycol, vegetable oils such as olive oil and organic ester compositions such as ethyl oleate, which are suitable for injection.
- Aqueous carriers may include water, alcoholic aqueous solutions, emulsions, suspensions, saline and buffered media.
- Parenteral carriers may include sodium chloride solution, Ringer's dextrose, dextrose and sodium chloride, Ringer's lactic acid and binding oil.
- Intravenous carriers may include, for example, fluid supplements, nutrients and electrolytes (eg, those based on Ringer's dextrose).
- the antineoplastic agent of the present invention can further contain preservatives and other additives such as antimicrobial compounds, antioxidants, chelating agents and inert gases.
- the disease to which the antineoplastic agent of the present invention acts is a malignant disease in which a substance targeting a ribosomal protein as an active ingredient contained in the antineoplastic agent of the present invention can act prophylactically and / or therapeutically. It is not particularly limited as long as it is a tumor.
- liver cancer, pancreatic cancer, breast cancer, colon cancer, non-small cell lung cancer, small cell lung cancer and prostate cancer and particularly preferred are liver cancer and pancreatic cancer.
- an antibody against a ribosomal protein whose expression is enhanced in malignant tumor cells specifically, an anti-RPL29 antibody and / or an anti-RPS4X antibody should originally exist in vivo.
- Antibodies against ribosomal proteins whose expression is enhanced in malignant tumor cells specifically anti-RPL29 antibody and / or anti-RPS4X antibody, are considered as one of the defense mechanisms that do not lead to disease even if malignant tumor cells are formed Even if thousands of malignant tumor (cancer) cells are made every day, it seems that the state where it is difficult to develop cancer can be maintained.
- the present invention is considered to be capable of predicting the onset of malignant tumor and predicting the prognosis after onset by measuring the anti-RPL29 antibody and / or anti-RPS4X antibody in vivo.
- Each antibody is preferably examined quantitatively. Specifically, by measuring the anti-RPL29 antibody titer and / or anti-RPS4X antibody titer in a biological sample.
- the present invention also extends to a method for examining a malignant tumor characterized by indicating an anti-RPL29 antibody titer and / or an anti-RPS4X antibody titer in a biological specimen.
- the biological sample is not particularly limited as long as it may contain the antibody.
- Suitable biological specimens include blood components such as plasma and serum.
- the antibody titer can be measured by a method known per se or by a method developed in the future. For example, a serial serum dilution method or a constant concentration serum dilution method can be applied. Specifically, methods such as enzyme immunization (ELISA), radioimmunoassay (RIA), chemiluminescence immunoassay (CLIA), and latex agglutination turbidimetry (LA) can be applied.
- ELISA enzyme immunization
- RIA radioimmunoassay
- CLIA chemiluminescence immunoassay
- LA latex agglutination turbidimetry
- the examination of the malignant tumor of the present invention can be particularly preferably performed for predicting the prognosis of the malignant tumor.
- the cut-off value of each antibody titer can be determined by a testing technique, a testing device, or the like.
- the absorbance at a wavelength of 405 nm can be 0.3-0.7 OD 405 nm , preferably 0.5 OD 405 nm . Note that the absorbance at a specific wavelength varies depending on the measurement conditions and the measurement equipment, and therefore it is necessary to determine an appropriate cutoff value when generalizing the inspection method.
- liver cancer pancreatic cancer
- breast cancer colon cancer
- non-small cell lung cancer small cell lung cancer
- prostate cancer stomach cancer
- thyroid cancer ovarian cancer
- salivary glandular cystic cancer acute bone marrow Leukemia, acute lymphoblastic leukemia, chronic lymphocytic leukemia, chronic myelogenous leukemia, malignant lymphoma, mucinous liposarcoma, glioblastoma, alveolar rhabdomyosarcoma, Wilms tumor, oligodendroglioma, adrenocortical carcinoma , Multiple myeloma, medulloblastoma, endometrial cancer, esophageal cancer and Ewing sarcoma.
- liver cancer, pancreatic cancer, breast cancer, colon cancer, non-small cell lung cancer, small cell lung cancer and prostate cancer and particularly preferred are liver cancer and pancreatic cancer.
- AIH autoimmune hepatitis
- Protein G was washed with 0.1M Na-Phosphate Buffer, pH 7.4, then added to a solution containing Huh7 membrane protein extract as an antigen, treated at room temperature for 1 hour, and non-specifically adsorbed to protein G Medium IgG and antigen were reacted.
- an antibody against a membrane protein is present in serum, an antigen-antibody reaction occurs with the antigen, and an antigen-antibody complex is formed.
- the serum anti-RPL29 antibody titer in the AIH patient group varied from case to case, but in Reference Example 1, the anti-RPL29 antibody titer of 1.8465 OD 405 nm was relatively high in Case 1 that showed growth inhibition of Huh7 ( (See FIG. 3). On the other hand, in Case 2, which did not inhibit the growth of Huh7 cells, the anti-RPL29 antibody titer was as low as 0.369 OD 405 nm (see FIG. 3). Although anti-RPL29 antibody is also present in the serum of healthy individuals, the antibody titer was generally low compared to autoimmune hepatitis cases (P ⁇ 0.0001). In addition, the antibody titer was less than 0.5 OD 405 nm in 87% of healthy subjects (see FIG. 2).
- Each cell line (Huh7, PLC / PRF / 5, Hep3B, HepG2, HLE, HLF, SK-Hep-1) is a human liver cancer cell line.
- the cells were seeded at 2 ml / well on 6-well plates for cell culture.
- Culture medium is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acids (Sigma chemical, MO) + 1% sodium pyruvate (Sigma-Aldrich Co. ., St.
- Proteins extracted from various human liver cancer cell lines were electrophoresed by SDS-PAGE according to a conventional method.
- the migrated protein was blotted on a PVDF membrane according to a conventional method.
- the primary antibody is mouse anti-RPL29 antibody (H00006259-B02P: Avnova, Taipei, Taiwan) or anti-RPS4X antibody (PAB17574: Avnova, Taipe) , (Taiwan) and anti- ⁇ -actin antibody (Sigma-Aldrich Co., MO) for 1 hour.
- HRP-labeled anti-IgG antibody (RPN2124: GE Healthcare, UK) was reacted as a secondary antibody for 1 hour. After washing, color was developed with ECL Western Blotting Detection System (RPN2132: GE Healthcare, UK) and detected with a luminometer.
- Each cell line (ASPC-1, BxPC-3, PANC-1, MIA PaCa-2, KLM-1, Suit-2, human pancreatic cancer cell line)
- Each T3M4 was cultured in a petri dish with a diameter of 10 cm.
- Culture medium is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acids (Sigma chemical, MO) + 1% sodium pyruvate (Sigma-Aldrich Co. ., St.
- the protein extracted from the human pancreatic cancer cell line by the above method was subjected to electrophoresis by SDS-PAGE according to a conventional method.
- the electrophoresed protein was blotted on a polyvinylidene fluoride (PVDF) membrane according to a conventional method.
- PVDF polyvinylidene fluoride
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- the protein extracted from Huh7 after stimulation with human IgG by the above-described method was electrophoresed by SDS-PAGE according to a conventional method.
- the electrophoresed protein was blotted on a PVDF membrane according to a conventional method.
- PVDF Blocking Reagent for Can Get Signal TOYOBO, Osaka, Japan
- each primary antibody of ⁇ -catenin, CyclinD1, p-mTOR (Ser2448) and p-p70 S6 Kinase (Thr389) (Cell signaling Techonology, Inc., MA) or anti- ⁇ -actin antibody was treated for 1 hour.
- HRP-labeled anti-IgG antibody (RPN2124: GE Healthcare, UK) was reacted as a secondary antibody for 1 hour. After the membrane was washed, the color was developed with ECL Western Blotting Detection System (RPN2132: GE Healthcare, UK) and detected with a luminometer.
- RPMI-1640 Sigma-Aldrich Co., MO
- 10% heat inactivated FBS Vitromex, Vilshofen, Germany
- penicillin-streptomycin solution Sigma-Aldrich Co., MO
- pancreatic cancer cell lines AsPC-1 and Panc-1 were combined with DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acids (Sigma-Aldrich Co.
- Proteins extracted from various human malignant tumor cell lines were electrophoresed by SDS-PAGE according to a conventional method.
- the migrated protein was blotted on a PVDF membrane according to a conventional method.
- the primary antibody is mouse anti-RPL29 antibody (H00006259-B02P: Avnova, Taipei, Taiwan) or anti-RPS4X antibody (PAB17574: Avnova, Taipe) , (Taiwan) and anti- ⁇ -actin antibody (Sigma-Aldrich Co., MO) for 1 hour.
- an HRP-labeled anti-IgG antibody RPN2124: GE Healthcare, UK
- the color was developed with ECL Western Blotting Detection SystemRP (RPN2132: GE Healthcare, UK) and detected with a luminometer.
- Example 1 Proliferation inhibitory effect of hepatoma cell line Huh7 by anti-RPL29 antibody
- the hepatoma cell line Huh7 was adjusted to 5.0 ⁇ 10 4 cell / ml and then seeded on a 96-well plate for cell culture at 100 ⁇ l / well.
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- anti-RPL29 antibody H00006159-B02P: Avnova, Taipei, Taiwan
- recombinant RPL29 H00006259-P01: Avnova, Taipei, Taiwan
- Example 2 Serum anti-RPL29 antibody and prognosis in patients with unresectable pancreatic cancer
- pancreatic cancer was diagnosed by cytology or histology, and stage 4 of UICC classification (stage 4b of TNM classification) unresectable advanced pancreatic cancer
- serum anti-RPL29 antibody titer was measured before the start of treatment, and the relationship with the period from the start of treatment to patient death was analyzed by the Kaplan-meier method. The possibility of prediction was examined.
- the antibody titer of anti-RPL29 antibody in serum was measured by the same method as in Reference Example 3.
- Anti-RPL29 antibody was found in the serum of patients with unresectable pancreatic cancer with various antibody titers.
- Example 3 Proliferation inhibitory effect of hepatoma cell line PLC / PRF / 5 by anti-RPL29 antibody After adjusting the hepatoma cell line PLC / PRF / 5 to 5.0 ⁇ 10 4 cell / ml, 100 ⁇ l / ml in a 96-well plate for cell culture Seeded well.
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- anti-RPL29 antibody H00006159-B02P: Avnova, Taipei, Taiwan
- recombinant RPL29 H00006159-P01: Avnova, Taipei, Taiwan
- the anti-RPL29 antibody suppressed cell growth of the liver cancer cell line PLC / PRF / 5 in a concentration-dependent manner.
- the cell growth inhibitory effect on the liver cancer cell line PLC / PRF / 5 by the anti-RPL29 antibody was offset (see FIG. 11). From this, it was confirmed that the substance which showed the hepatoma cell growth inhibitory effect was an anti-RPL29 antibody.
- an anti-RPL29 antibody or a substance capable of activating or enhancing the endogenous anti-RPL29 antibody present in the living body or a substance capable of inducing anti-RPL29 antibody production in the living body, High anti-RPL29 antibody is observed, and an effective antitumor effect can be expected.
- Example 4 Intracellular signal change of liver cancer cell line Huh7 by anti-RPL29 antibody After adjusting the liver cancer cell line Huh7 to 5.0 ⁇ 10 4 cell / ml, it was seeded at 2 ml / well on a 6-well plate for cell culture.
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- anti-RPL29 antibody H00006159-B02P: Avnova, Taipei, Taiwan
- H00006159-B02P Avnova, Taipei, Taiwan
- the culture solution was removed, and 400 ⁇ l of Pierce IP Lysis Buffer (Thermo Fisher Scientific Inc., IL) was added to each well.
- the cells were crushed with a bead crusher (TAITEC, Saitama, Japan). Thereafter, the solution was centrifuged at 13,000 g for 10 minutes, and the supernatant was collected.
- the protein extracted from Huh7 after stimulation with anti-RPL29 antibody (H00006159-B02P: Avnova, Taipei, Taiwan) by the above method was subjected to electrophoresis by SDS-PAGE according to a conventional method.
- the migrated protein was blotted on a PVDF membrane according to a conventional method.
- PVDF Blocking Reagent for Can Get Signal after blocking for 1 hour Casein Kinase 1 ⁇ , Axin1, Pan-GSK, p-GSK-3 ⁇ (ser9), p- ⁇ -Catenin (Thr41 / Ser45) , ⁇ -Catenin, Cyclin D1, c-Jun, Met, Survivin, p-Tuberin / TSC2 (Thr1462), p-mTOR (Ser2448) and p-p70 S6rKinase (Thr389) primary antibodies (Cell signaling Techonology, Inc. ., (MA) or anti- ⁇ -actin antibody (Sigma-Aldrich Co., MO) for 1 hour.
- an HRP-labeled anti-IgG antibody (RPN2124: GE Healthcare, UK) was reacted as a secondary antibody for 1 hour. After the membrane was washed, the color was developed with ECL Western Blotting Detection SystemRP (RPN2132: GE Healthcare, UK) and detected with a luminometer.
- ⁇ -cateni accumulated in cells by Wnt stimulation moves into the nucleus and then promotes the expression of genes such as cyclin D1.
- ⁇ -catenin binds to Axin along with APC and GSK-3 ⁇ .
- phosphorylation by casein kinase 1 ⁇ and GSK-3 ⁇ and accompanying ubiquitination occur, and finally It is degraded by the proteasome.
- administering enhances the expression of GSK-3 ⁇ , Axin 1, casein kinase 1 ⁇ that regulates intracellular ⁇ -catenin in the direction of degradation and intracellular ⁇ - A decrease in the amount of catenin and a decrease in protein expression of the target genes cyclin D1, c-Jun, Met, and Survivin were observed (see FIG. 12).
- mTOR When activated by phosphorylation, mTOR, an intracellular serine / threonine kinase, promotes mRNA translation and protein synthesis, and induces cell growth and proliferation (Cell 2012; 149: 274).
- the activity of intracellular mTOR and downstream effector p70 ⁇ S6 kinase was reduced by administering anti-RPL29 antibody to hepatoma cell line huh7 (see Fig. 12).
- Example 5 Relationship between serum anti-RPL29 antibody titer and growth inhibitory effect of serum IgG on liver cancer cell line (1) A hepatoma cell line Huh7 or PLC / PRF / 5 was adjusted to 5.0 ⁇ 10 4 cell / ml, and then seeded at 100 ⁇ l / well on a 96-well plate for cell culture.
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- Example 6 Relationship between serum anti-RPL29 antibody titer and serum IgG growth inhibition effect of serum IgG (2)
- a hepatoma cell line Huh7 or PLC / PRF / 5 was adjusted to 5.0 ⁇ 10 4 cell / ml, and then seeded at 100 ⁇ l / well on a 96-well plate for cell culture.
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- the cell growth inhibitory effect of hepatoma cell lines of IgG obtained by extraction from the serum of autoimmune hepatitis patients with high serum anti-RPL29 antibody titer was offset (see FIGS. 15 and 16).
- the antibody titer of anti-RPL29 antibody in serum was measured by the same method as in Reference Example 3. From this, it was confirmed that the substance which showed the hepatoma cell growth inhibitory effect was an anti-RPL29 antibody.
- an anti-RPL29 antibody or a substance capable of activating or enhancing the endogenous anti-RPL29 antibody present in the living body or a substance capable of inducing anti-RPL29 antibody production in the living body, High anti-RPL29 antibody is observed, and an effective antitumor effect can be expected.
- Example 7 Proliferation inhibitory effect of pancreatic cancer cell line Panc-1 by anti-RPL29 antibody Pancreatic cancer cell line Panc-1 was adjusted to 5.0 ⁇ 10 4 cell / ml and then seeded at 100 ⁇ l / well on a 96-well plate for cell culture. .
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- the anti-RPL29 antibody suppressed cell growth of the pancreatic cancer cell line Panc-1 in a concentration and time-dependent manner (see FIG. 17).
- pancreatic cancer cell line AsPC-1 Proliferation inhibitory effect of pancreatic cancer cell line AsPC-1 by anti-RPL29 antibody
- the pancreatic cancer cell line AsPC-1 was adjusted to 5.0 ⁇ 10 4 cell / ml and then seeded at 100 ⁇ l / well on a 96-well plate for cell culture. .
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- the anti-RPL29 antibody suppressed cell growth of the pancreatic cancer cell line AsPC-1 in a concentration-dependent manner (see FIG. 18).
- Example 9 Intracellular signal change of pancreatic cancer cell line AsPC-1 by anti-RPL29 antibody Pancreatic cancer cell line AsPC-1 was seeded on a 10 cm plate for cell culture.
- the culture solution is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- pancreatic cancer cell line AsPC-1 administered with the anti-RPL29 antibody intracellular ⁇ -catenin and p-mTOR (S2448) were decreased. These indicate that the anti-RPL29 antibody suppresses the intracellular signal transduction system involved in the cell cycle and cell proliferation (see FIG. 19).
- Example 10 Serum anti-RPL29 antibody and recurrence in patients after resection of pancreatic cancer
- a resectable pancreatic cancer that was diagnosed as pancreatic cancer by cytology or histology and no distant metastases were found
- the serum anti-RPL29 antibody titer before radical resection was measured by the same method as in Reference Example 3, and from the time of radical resection until the time of recurrence of pancreatic cancer
- the antibody titer of anti-RPL29 antibody in serum was measured by the same method as in Reference Example 3.
- the anti-RPL29 antibody titer in patients after resection of pancreatic cancer is shown in FIG.
- the serum anti-RPL29 antibody titer was classified into cases with 0.5 OD 405 nm or more and cases with less than 0.5 OD 405 nm , and the background of these patients is shown in Table 3.
- Serum anti RPL29 antibody titer between the cases of less than 0.5 OD 405 nm or more cases and 0.5 OD 405 nm, there was no significant difference in patient characteristics. However, in cases where the serum anti-RPL29 antibody titer was 0.5 OD 405 nm or more, the period until postoperative recurrence was clearly longer than in cases where the serum anti-RPL29 antibody titer was less than 0.5 OD 405 nm (see FIG. 21).
- Example 11 Proliferation inhibitory effect of pancreatic cancer and colon cancer by IgG in serum After adjusting pancreatic cancer cell lines AsPC-1, Panc-1 and colon cancer cell line HCT15 to 5.0 ⁇ 10 4 cell / ml, cell culture A 96-well plate was seeded at 100 ⁇ l / well.
- the culture medium for pancreatic cancer cell line culture was DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat-inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acids (Sigma-Aldrich Co., MO) ) + 1% sodium pyruvate (Sigma-Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) and cultured at 37 ° C. under 5% CO 2 .
- Culture medium for colon cancer cell line culture is RPMI-1640 (Sigma-Aldrich Co., MO) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co. , MO) and cultured under the same conditions.
- IgG was extracted from the serum in the same manner as in Reference Example 1. 12 hours after the start of the culture, 0 ⁇ g / ml or 5 ⁇ g / ml of the IgG obtained by the extraction was added.
- RPL29 H00006159-P01: Avnova, Taipei, Taiwan
- eluate 50 mM Glycine Buffer, pH 2.8
- MTT 5 mg / ml in phosphate buffered saline
- IgG extracted from the sera of patients with autoimmune hepatitis with high anti-RPL29 antibody titer in serum was found to have a growth inhibitory effect targeting RPL29 in pancreatic cancer and colon cancer (see FIGS. 22 and 23). It was also observed that these growth inhibitory effects were offset by the addition of recombinant RPL29. From this, it was confirmed that the substance which showed the cell growth inhibitory effect in pancreatic cancer and colon cancer was anti-RPL29 antibody.
- an anti-RPL29 antibody or a substance capable of activating or enhancing the endogenous anti-RPL29 antibody present in the living body or a substance capable of inducing anti-RPL29 antibody production in the living body, High anti-RPL29 antibody is observed, and an effective antitumor effect can be expected.
- Example 12 Growth inhibitory effect of various human malignant tumor cells by IgG in serum Breast cancer cell line MCF-7 or small cell lung cancer culture line H1048, non-small cell lung cancer cell line PC-9, prostate cancer cell line PC-3 Each was adjusted to 5.0 ⁇ 10 4 cells / ml and then seeded at 100 ⁇ l / well on a 96-well plate for cell culture.
- RPMI-1640 Sigma-Aldrich Co., MO
- 10% heat inactivated FBS Vitromex, Vilshofen, Germany
- penicillin-streptomycin solution Sigma-Aldrich Co., MO
- the cells were cultured at 37 ° C. under 5% CO 2 .
- IgG extracted from the serum by the same method as in Reference Example 1 from 2 autoimmune hepatitis patients (AIH-31, AIH-45) showing high serum anti-RPL29 antibody was 0 ⁇ g / ml or Added at 5 ⁇ g / ml.
- the same amount of eluate (50 mM Glycine Buffer, pH 2.8) alone was added.
- 10 ⁇ l of 3- (4,5-dimethylthiazol-2-yl) -2,5-diphenyl tetrazolium bromide (MTT: 5 mg / ml in phosphate buffered saline) solution was added to each well.
- the culture solution was removed 4 hours after the addition of MTT, and 100 ⁇ l of DMSO was added to each well. Absorbance at 570 nm was measured with an ELISA reader (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan). Absorbance under each condition was expressed as a ratio to the control.
- IgG extracted from serum of autoimmune hepatitis patients with high serum anti-RPL29 antibody titer showed growth inhibitory effects on breast cancer, small cell lung cancer, non-small cell lung cancer, and prostate cancer (see FIGS. 24 and 25). .
- Anti-RPL29 antibody suppresses growth of various human malignant tumor cells
- Anti-RPL29 antibody suppresses the growth of various human malignant tumor cells (colon cancer, small cell lung cancer, non-small cell lung cancer, breast cancer, prostate cancer, pancreatic cancer)
- the effect was investigated.
- Anti-RPL29 antibody suppressed cell proliferation in breast and colon cancer cells, non-small cell lung cancer, small cell lung cancer, and prostate cancer (see FIG. 26).
- Example 14 Proliferation inhibitory effect of hepatoma cell line Huh7 by anti-RPS4X antibody
- the hepatoma cell line Huh7 was adjusted to 5.0 ⁇ 10 4 cell / ml and then seeded at 100 ⁇ l / well on a 96-well plate for cell culture.
- Culture medium is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma -Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- an anti-RPS4X antibody (PAB17574: Avnova, Taipei, Taiwan) was added at 0 ⁇ g / ml, 1 ⁇ g / ml, or 5 ⁇ g / ml. Thereafter, in 24 or 48 hours (36 or 60 hours after the start of culture), 3- (4,5-dimethylthiazol-2-yl) -2,5-diphenyl tetrazolium bromide (MTT: 5 mg / ml in phosphate buffered saline) 10 ⁇ l of solution was added to each well. The culture solution was removed 4 hours after the addition of MTT, and 100 ⁇ l of DMSO was added to each well. Absorbance at 570 nm was measured with an ELISA reader (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan). Absorbance under each condition was expressed as a ratio to the control.
- the anti-RPS4X antibody suppressed cell growth of the liver cancer cell line Huh7 in a concentration and time-dependent manner (see FIG. 27).
- Example 15 Growth inhibitory effect of malignant tumor cells (liver cancer, pancreatic cancer) by anti-RPS4X antibody Hepatoma cell line PLC / PRF / 5 or pancreatic cancer cell lines Panc-1 and AsPC-1 were each 5.0 ⁇ 10 4 cells. After adjusting to / ml, the cells were seeded at 100 ⁇ l / well on a 96-well plate for cell culture.
- Culture medium is DMEM (Invitrogen Co., Carlsbad, CA) + 10% heat inactivated FBS (Vitromex, Vilshofen, Germany) + 1% non-essential amino acid (Sigma-Aldrich Co., MO) + 1% sodium pyruvate (Sigma -Aldrich Co., MO) + 1% penicillin-streptomycin solution (Sigma-Aldrich Co., MO) was used and cultured at 37 ° C. under 5% CO 2 .
- an anti-RPS4X antibody (PAB17574: Avnova, Taipei, Taiwan) was added at 0 ⁇ g / ml, 1 ⁇ g / ml, or 5 ⁇ g / ml.
- 10 ⁇ l of 3- (4,5-dimethylthiazol-2-yl) -2,5-diphenyl tetrazolium bromide (MTT: 5 mg / ml in phosphate buffered saline) solution was added to each well.
- the culture solution was removed 4 hours after the addition of MTT, and 100 ⁇ l of DMSO was added to each well.
- Absorbance at 570 nm was measured with an ELISA reader (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan). Absorbance under each condition was expressed as a ratio to the control.
- the anti-RPS4X antibody inhibited cell growth of hepatoma cells and pancreatic cancer cells in a concentration-dependent manner (see FIG. 28).
- Example 16 Examination of growth inhibitory effect of various malignant tumor cells by anti-RPS4X antibody Growth inhibitory effect of various malignant tumor cells (colon cancer, small cell lung cancer, non-small cell lung cancer, breast cancer, prostate cancer) by anti-RPS4X antibody investigated. After adjusting breast cancer cell line MCF-7 or colon cancer cell line HCT15, non-small cell lung cancer cell line PC-9, small cell lung cancer cell line H1048, prostate cancer cell line PC-3 to 5.0 ⁇ 10 4 cell / ml each Then, the cells were seeded in a 96-well plate for cell culture at 100 ⁇ l / well.
- the anti-RPS4X antibody suppressed cell proliferation in breast cancer cells and colon cancer cells, non-small cell lung cancer, small cell lung cancer, and prostate cancer (see FIG. 29).
- the antineoplastic agent of the present invention which contains a substance that targets a ribosomal protein whose expression is enhanced in malignant tumor cells as an active ingredient, proliferates malignant tumor cells. Can be suppressed.
- the substance targeting the ribosomal protein whose expression is enhanced in the malignant tumor cell of the present invention is one of the defense mechanisms that do not lead to the pathogenesis that is considered to be inherent in the living body even if the malignant tumor cell is formed. It is considered as a substance.
- An antineoplastic agent containing such a substance as an active ingredient is a highly safe drug and useful.
- the prognosis of a cancer patient can be predicted by measuring the amount of a substance that targets a ribosomal protein whose expression is enhanced in malignant tumor cells, for example, in the case of an antibody, the antibody titer. It is very useful in that it can provide an optimal treatment method for cancer patients according to the results.
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Abstract
Description
1.悪性腫瘍細胞において発現の亢進しているリボソームタンパク質を標的とする物質を有効成分として含有することを特徴とする抗悪性腫瘍剤。
2.悪性腫瘍細胞において発現の亢進しているリボソームタンパク質が、RPL29及び/又はRPS4Xである、前項1に記載の抗悪性腫瘍剤。
3.RPL29を標的とする物質が、抗RPL29抗体、生体内に存在する内在性抗RPL29抗体を活性化若しくは増強しうる物質、生体内に抗RPL29抗体産生を誘導しうる物質、又はRPL29アンタゴニストである、前項2に記載の抗悪性腫瘍剤。
4.RPS4Xを標的とする物質が、抗RPS4X抗体、生体内に存在する内在性抗RPS4X抗体を活性化若しくは増強しうる物質、生体内に抗RPS4X抗体産生を誘導しうる物質、又はRPS4Xアンタゴニストである、前項2に記載の抗悪性腫瘍剤。
5.生体内に存在する内在性抗RPL29抗体及び/又は抗RPS4X抗体を活性化若しくは増強しうる物質が免疫賦活化剤であり、生体内に抗RPL29抗体及び/又は抗RPS4X抗体産生を誘導しうる物質がワクチンである、前項3又は4に記載の抗悪性腫瘍剤。
6.悪性腫瘍が、肝癌、膵癌、乳癌、大腸癌、非小細胞肺癌、小細胞肺癌、前立腺癌、胃癌、甲状腺癌、卵巣癌、唾液腺腺様嚢胞癌、急性骨髄性白血病、急性リンパ性白血病、慢性リンパ性白血病、慢性骨髄性白血病、悪性リンパ腫、粘液性脂肪肉腫、膠芽腫、胞巣状横紋筋肉腫、ウィルムス腫瘍、乏突起膠細胞腫、副腎皮質癌、多発性骨髄腫、髄芽腫、子宮内膜癌、食道癌及びユーイング肉腫から選択される一種又は複数種の癌である、前項1~5のいずれか1に記載の抗悪性腫瘍剤。
7.生体検体中の抗RPL29抗体価及び/又は抗RPS4X抗体価を測定することを特徴とする悪性腫瘍の検査方法。
8.悪性腫瘍の検査が、悪性腫瘍の予後予測である、前項7に記載の検査方法。
9.悪性腫瘍が、肝癌、膵癌、乳癌、大腸癌、非小細胞肺癌、小細胞肺癌、前立腺癌、胃癌、甲状腺癌、卵巣癌、唾液腺腺様嚢胞癌、急性骨髄性白血病、急性リンパ性白血病、慢性リンパ性白血病、慢性骨髄性白血病、悪性リンパ腫、粘液性脂肪肉腫、膠芽腫、胞巣状横紋筋肉腫、ウィルムス腫瘍、乏突起膠細胞腫、副腎皮質癌、多発性骨髄腫、髄芽腫、子宮内膜癌、食道癌及びユーイング肉腫から選択される一種又は複数種の癌である、前項7又は8に記載の検査方法。
本参考例では血清中IgGによる肝癌細胞株Huh7の増殖抑制効果を検討した。
Huh7を5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma chemical, MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., St. Louis, MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co.)を用い、37℃で5% CO2下に培養した。
本参考例では、参考例1で確認されたHuh7の増殖を抑制するIgGの対応抗原について、解析を行った。
1)ProteoJETTM Membrane Protein Extraction Kit(Thermo Fischer Scientific Inc., IL, USA)を使用してHuh7より膜タンパクを抽出した。
2)参考例1の各AIH患者(Case1, Case2)から得た血清試料について、抗体精製用アフィニティー担体であるプロテインG(Invitrogen Dynal AS, Oslo, Norway)を添加し、血清中のIgGを非特異的に吸着した。
3)プロテインGを0.1M Na-Phosphate Buffer, pH 7.4で洗浄後、抗原としてHuh7の膜タンパク抽出物を含む溶液に加えて室温で1 時間処理し、プロテインGに非特異的に吸着された血清中IgGと抗原とを反応させた。血清中に膜タンパクに対する抗体が存在する場合に抗原との間で抗原抗体反応が生じ、抗原抗体複合体が形成される。
4)0.1M Na-Phosphate Buffer, pH 7.4で洗浄後、溶出液(50 mM Glycine Buffer, pH 2.8)でプロテインGに吸着したタンパク質を溶出させ、前記溶出したタンパク質をProteoExtractTM All-in-One Trypsin Digestion Kit(Calbiochem, Darmstadt, Germany)を使用してトリプシン消化し、質量分析計(LC/MS)で測定した。測定した結果をデータベースSwiss-Protで検索した。
本実施例では、健常者群62例(図2)及びAIH患者群52例(図3)の血清について、血清中の抗RPL29抗体価を測定し、各群における抗RPL29抗体価の傾向を確認した。
抗体価の測定は、ELISA法により、以下の方法で行った。
1)1μg/mlのRecombinant RPL29 (H00006259-P01: Avnova, Taipei, Taiwan) を96 wellマイクロプレートの各wellに100μl加えて1 時間静置し抗原を固相化した。
2)1% ウシ血清アルブミン(bovine serum albumin)を300μl/well加えて15分間のブロッキング処理後、健常者又はAIH患者の各血清を100倍に希釈した血清溶液100μl/well添加し、1 時間反応させた。
3)洗浄後、1μg/mlのHRP標識抗ヒトIgG抗体を100μl/well添加し、1 時間反応させた。
4)さらに洗浄後、2,2'-azino-bis[3-ethylbenzothiazoline-6-sulfonateを100μl/well添加し、十分反応させた。
5)ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、波長405 nmでの吸光度を測定した。参考例1に示すAIH患者(Case1)血清を陽性コントロールとし、陰性コントロールは血清のかわりに血清の希釈液とした。吸光度測定後に陰性コントロールの吸光度を引いた値を抗RPL29抗体価とした。
ヒト肝癌細胞株である各細胞株(Huh7、PLC/PRF/5、Hep3B、HepG2、HLE、HLF、SK-Hep-1)を細胞培養用6 wellプレートに2 ml/wellで播種した。培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma chemical, MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., St. Louis, MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co.)を用い、37℃で5% CO2下に培養した。細胞が80% コンフルエントになった時点で培養液を除去し、Pierce IP Lysis Buffer (Thermo Fisher Scientific Inc., IL) 400μlを各wellに加えた。 15分間攪拌した後、ビーズ破砕機(TAITEC, Saitama, Japan)で細胞を破砕した。その後、13,000gで10分間遠沈処理し、上澄を回収した。得られた上澄に等量の2×サンプルバッファー(20% Glycerol, 4% SDS, 125mM Tris-HCl / pH6.8, 10% メルカプトエタノール, 0.004% ブロモフェノールブルー(BPB))を添加し、5分間煮沸し、タンパク質を抽出した。
ヒト膵癌細胞株である各細胞株(ASPC-1、BxPC-3、PANC-1、 MIA PaCa-2、KLM-1、 Suit-2、T3M4)を各々10cm径のシャーレに培養した。培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma chemical, MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., St. Louis, MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co.)を用い、37℃で5% CO2下に培養した。細胞が100% コンフルエントになった時点で2×サンプルバッファー(20% Glycerol, 4% SDS, 125mM Tris-HCl / pH6.8, 10% メルカプトエタノール, 0.004% ブロモフェノールブルー(BPB))を添加し、セルスクレイパーで細胞を回収し、5分間煮沸し、タンパク質を抽出した。
肝癌細胞株Huh7を5.0×104 cell/ml に調整後、細胞培養用6 wellプレートに2 ml/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。
ヒト各種悪性腫瘍細胞株(大腸癌、小細胞肺癌、非小細胞肺癌、乳癌、前立腺癌、膵癌)から参考例5と同手法にてタンパク質を抽出し、RPL29及びRPS4Xの発現を確認した。
大腸癌細胞株HCT15又は小細胞肺癌細胞株H1048、非小細胞肺癌細胞株PC-9、乳癌細胞株MCF-7、前立腺癌細胞株PC-3を径10cm dishに播種した。なお、培養液はRPMI-1640 (Sigma-Aldrich Co., MO) + 10% 加熱不活化 FBS (Vitromex, Vilshofen, Germany) + 1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。同様に、膵癌細胞株AsPC-1とPanc-1をDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。80% コンフルエントになった時点で2×サンプルバッファー(20% Glycerol, 4% SDS, 125mM Tris-HCl / pH6.8, 10% メルカプトエタノール, 0.004% BPB)を添加し、セルスクレイパーで回収し5分間煮沸した。
肝癌細胞株Huh7を5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始24時間後に、抗RPL29抗体(H00006159-B02P : Avnova, Taipei, Taiwan) を0μg/ml, 1μg/ml又は5μg/ml、recombinant RPL29 (H00006259-P01: Avnova, Taipei, Taiwan)を、0μg/ml又は 5μg/ml加えた。培養開始42時間後に、 [methyl-3H]-thymidine (TRK637; GE Healthcare Amersham Biosciences, Buckinghamshire, UK) を各wellに添加し、培養開始48時間後に液体シンチレーションカウンターで測定し、細胞増殖を確認した。測定結果をコントロールに対する比率で表した。
本実施例では、細胞診又は組織診で膵癌と診断され、UICC分類でステージ4(TNM分類でステージ4b)の切除不能進行膵癌39例を対象とし、治療開始前の血清中抗RPL29抗体価を測定し、治療開始時から患者死亡時までの期間との関連をKaplan-meier法で解析し、血清中抗RPL29抗体価と予後予測の可能性を検討した。血清中抗RPL29抗体の抗体価の測定は、参考例3と同手法により行った。
2)治療:4週間を1コースとし、Day 1, 8, 15にゲムシタビン(Gemcitabine)1000mg/m2を点滴静注した。
3)解析:治療開始前の血清中抗RPL29抗体価を参考例3と同手法にて測定し、治療開始時から患者死亡時までの期間との関連をKaplan-meier法で解析した。上記各患者の血清中抗RPL29抗体価を図9に示し、生存期間を図10に示した。切除不能膵癌患者の血清中に、種々の抗体価で抗RPL29抗体を認めた。血清中抗RPL29抗体価が0.5 OD405 nm以上の症例では、0.5 OD405 nm未満の症例に比べて明らかに生存期間が長期であった。
肝癌細胞株PLC/PRF/5を5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、抗RPL29抗体(H00006159-B02P : Avnova, Taipei, Taiwan) を0μg/ml, 1μg/ml又は5μg/ml、recombinant RPL29 (H00006159-P01: Avnova, Taipei, Taiwan)0μg/ml,又は 5μg/ml加えた。培養開始60時間後に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度をコントロールに対する比で表した。
肝癌細胞株Huh7を5.0×104 cell/ml に調整後、細胞培養用6 wellプレートに2 ml/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、抗RPL29抗体(H00006159-B02P : Avnova, Taipei, Taiwan)を0μg/ml, 1μg/ml又は5μg/ml加えた。培養開始24時間後に培養液を除去し、Pierce IP Lysis Buffer (Thermo Fisher Scientific Inc., IL) 400μlを各wellに加えた。15分間攪拌した後、ビーズ破砕機(TAITEC, Saitama, Japan)で細胞を破砕した。その後、13,000gで10分間遠沈し、上澄を回収した。得られた上澄に等量の2×サンプルバッファー(20% Glycerol, 4% SDS, 125mM Tris-HCl / pH6.8, 10% メルカプトエタノール, 0.004% ブロモフェノールブルー(BPB))を添加し、5分間煮沸し、タンパク質を抽出した。
肝癌細胞株であるHuh7又はPLC/PRF/5を各々5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、参考例3で抗RPL29抗体を測定した自己免疫性肝炎患者のうち25例について、参考例1と同手法により得た精製IgG溶液を各wellに加えた(5μg/ml)。この時のコントロールには、溶出液(50 mM Glycine Buffer, pH 2.8)のみを同量加えた。培養開始60時間後に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度をコントロールに対する比で表した。
肝癌細胞株であるHuh7又はPLC/PRF/5を各々5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、参考例3で抗RPL29抗体を測定した自己免疫性肝炎患者のうち4例において、参考例1と同手法により得た精製IgG溶液についてIgGを0μg/ml又は5μg/ml、及びrecombinant RPL29 (H00006159-P01: Avnova, Taipei, Taiwan)を0μg/ml又は 1μg/ml加えた。この時のコントロールには、溶出液(50 mM Glycine Buffer, pH 2.8)のみを同量加えた。培養開始60時間後に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度をコントロールに対する比で表した。
膵癌細胞株Panc-1を5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、抗RPL29抗体(H00006159-B02P : Avnova, Taipei, Taiwan) を0μg/ml、1μg/ml又は5μg/ml加えた。その後24時間又は48時間後(培養開始36時間又は60時間後)に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度はコントロールに対する比で表した。
膵癌細胞株AsPC-1を5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、抗RPL29抗体(H00006159-B02P : Avnova, Taipei, Taiwan) を0μg/ml、1μg/ml又は5μg/ml加えた。培養開始60時間後に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度はコントロールに対する比で表した。
膵癌細胞株AsPC-1を細胞培養用10cmプレートに播種した。なお、培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。60% コンフルエントの状態で、抗RPL29抗体(H00006159-B02P : Avnova, Taipei, Taiwan) を1μg/ml加えた。抗RPL29抗体投与48時間後に、Proteome ProfilerTM Phospho-Kinase Array Kit(R&D Systems, Inc., MN, USA)を用いて、細胞内シグナルの解析を行った。なお、コントロールは、抗RPL29抗体非投与のものとした。
本実施例では、細胞診又は組織診で膵癌と診断され遠隔転移巣を認めない切除可能膵癌症例であって、膵癌原発巣に対して根治的切除術を施行した患者31例を対象とし、根治的切除術前の血清中抗RPL29抗体価を参考例3と同手法にて測定し、根治的切除術時から膵癌再発時までの期間との関連をKaplan-meier法で解析し、血清中抗RPL29抗体価と予後予測の可能性を検討した。血清中抗RPL29抗体の抗体価の測定は、参考例3と同手法により行った。
膵癌細胞株であるAsPC-1、Panc-1及び大腸癌細胞株HCT15を各々5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、膵癌細胞株培養用の培養液は、DMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。大腸癌細胞株培養用の培養液は、RPMI-1640 (Sigma-Aldrich Co., MO) + 10% 加熱不活化 FBS (Vitromex, Vilshofen, Germany) + 1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)とし、同条件で培養した。血清中抗RPL29抗体価が高値を示す自己免疫性肝炎患者2例(AIH-31、AIH-45)から、参考例1と同手法により血清からIgGを抽出した。培養開始12時間後に、前記抽出して得たIgGを0μg/ml又は5μg/ml加えた。さらに、recombinant RPL29 (H00006159-P01: Avnova, Taipei, Taiwan)を0μg/ml又は1μg/ml加えた。コントロールには、溶出液(50 mM Glycine Buffer, pH 2.8)のみを同量加えた。培養開始60時間後に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度をコントロールに対する比で表した。
乳癌細胞株MCF-7又は小細胞肺癌培養株H1048、非小細胞肺癌細胞株PC-9、前立腺癌細胞株PC-3を各々5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はRPMI-1640 (Sigma-Aldrich Co., MO) + 10% 加熱不活化 FBS (Vitromex, Vilshofen, Germany) + 1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、血清中抗RPL29抗体が高値を示す自己免疫性肝炎患者2例(AIH-31、AIH-45)から、参考例1と同手法により血清から抽出したIgGを0μg/ml又は5μg/mlで加えた。コントロールには、溶出液(50 mM Glycine Buffer, pH 2.8)のみを同量加えた。培養開始60時間後に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度をコントロールに対する比で表した。
抗RPL29抗体によるヒト各種悪性腫瘍細胞(大腸癌、小細胞肺癌、非小細胞肺癌、乳癌、前立腺癌、膵癌)の増殖抑制効果を調べた。
乳癌細胞株MCF-7又は大腸癌細胞株HCT15、非小細胞肺癌細胞株PC-9、小細胞肺癌細胞株H1048、前立腺細胞株PC-3を5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はRPMI-1640 (Sigma-Aldrich Co., MO) + 10% 加熱不活化 FBS (Vitromex, Vilshofen, Germany) + 1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、抗RPL29抗体(H00006159-B02P : Avnova, Taipei, Taiwan) を0μg/ml、1μg/ml又は5μg/mlで加えた。培養開始60時間後に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度をコントロールに対する比で表した。
肝癌細胞株Huh7を5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、抗RPS4X抗体(PAB17574: Avnova, Taipei, Taiwan) を0μg/ml、1μg/ml又は5μg/mlで加えた。その後24時間又は48時間(培養開始36時間又は60時間)に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度をコントロールに対する比で表した。
肝癌細胞株PLC/PRF/5又は膵癌細胞株であるPanc-1及びAsPC-1を、各々5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。培養液はDMEM (Invitrogen Co., Carlsbad, CA) + 10% 加熱不活化FBS (Vitromex, Vilshofen, Germany) + 1% 非必須アミノ酸 (Sigma-Aldrich Co., MO) + 1% ピルビン酸ナトリウム(Sigma-Aldrich Co., MO) +1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、抗RPS4X抗体(PAB17574: Avnova, Taipei, Taiwan) を0μg/ml、1μg/ml又は5μg/mlで加えた。培養開始60時間後に、 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定。各条件における吸光度をコントロールに対する比で表した。
抗RPS4X抗体による各種悪性腫瘍細胞(大腸癌、小細胞肺癌、非小細胞肺癌、乳癌、前立腺癌)の増殖抑制効果を検討した。
乳癌細胞株MCF-7又は大腸癌細胞株HCT15、非小細胞肺癌細胞株PC-9、小細胞肺癌細胞株H1048、前立腺癌細胞株PC-3を、各々5.0×104 cell/ml に調整後、細胞培養用96 wellプレートに100μl/wellで播種した。なお、培養液はRPMI-1640 (Sigma-Aldrich Co., MO) + 10% 加熱不活化 FBS (Vitromex, Vilshofen, Germany) + 1% ペニシリン-ストレプトマイシン溶液 (Sigma-Aldrich Co., MO)を用い、37℃で5% CO2下に培養した。培養開始12時間後に、抗RPS4X抗体(PAB17574: Avnova, Taipei, Taiwan) を0μg/ml、1μg/ml又は5μg/ml加えた。培養開始60時間後に、3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT:5 mg/ml in phosphate buffered saline) 溶液10μlを各wellに加えた。MTT添加4 時間後に培養液を除去し、DMSO 100μlを各wellに加えた。ELISAリーダー (Model 680 Microplate Reader: Bio-Rad Laboratories Ltd., Tokyo, Japan) で、570 nmの吸光度を測定した。各条件における吸光度をコントロールに対する比で表した。
Claims (9)
- 悪性腫瘍細胞において発現の亢進しているリボソームタンパク質を標的とする物質を有効成分として含有することを特徴とする抗悪性腫瘍剤。
- 悪性腫瘍細胞において発現の亢進しているリボソームタンパク質が、RPL29及び/又はRPS4Xである、請求項1に記載の抗悪性腫瘍剤。
- RPL29を標的とする物質が、抗RPL29抗体、生体内に存在する内在性抗RPL29抗体を活性化若しくは増強しうる物質、生体内に抗RPL29抗体産生を誘導しうる物質、又はRPL29アンタゴニストである、請求項2に記載の抗悪性腫瘍剤。
- RPS4Xを標的とする物質が、抗RPS4X抗体、生体内に存在する内在性抗RPS4X抗体を活性化若しくは増強しうる物質、生体内に抗RPS4X抗体産生を誘導しうる物質、又はRPS4Xアンタゴニストである、請求項2に記載の抗悪性腫瘍剤。
- 生体内に存在する内在性抗RPL29抗体及び/又は内在性抗RPS4X抗体を活性化若しくは増強しうる物質が免疫賦活化剤であり、生体内に抗RPL29抗体及び/又は抗RPS4X抗体産生を誘導しうる物質がワクチンである、請求項3又は4に記載の抗悪性腫瘍剤。
- 悪性腫瘍が、肝癌、膵癌、乳癌、大腸癌、非小細胞肺癌、小細胞肺癌、前立腺癌、胃癌、甲状腺癌、卵巣癌、唾液腺腺様嚢胞癌、急性骨髄性白血病、急性リンパ性白血病、慢性リンパ性白血病、慢性骨髄性白血病、悪性リンパ腫、粘液性脂肪肉腫、膠芽腫、胞巣状横紋筋肉腫、ウィルムス腫瘍、乏突起膠細胞腫、副腎皮質癌、多発性骨髄腫、髄芽腫、子宮内膜癌、食道癌及びユーイング肉腫から選択される一種又は複数種の癌である、請求項1~5のいずれか1に記載の抗悪性腫瘍剤。
- 生体検体中の抗RPL29抗体価及び/又は抗RPS4X抗体価を測定することを特徴とする悪性腫瘍の検査方法。
- 悪性腫瘍の検査が、悪性腫瘍の予後予測である、請求項7に記載の検査方法。
- 悪性腫瘍が、肝癌、膵癌、乳癌、大腸癌、非小細胞肺癌、小細胞肺癌、前立腺癌、胃癌、甲状腺癌、卵巣癌、唾液腺腺様嚢胞癌、急性骨髄性白血病、急性リンパ性白血病、慢性リンパ性白血病、慢性骨髄性白血病、悪性リンパ腫、粘液性脂肪肉腫、膠芽腫、胞巣状横紋筋肉腫、ウィルムス腫瘍、乏突起膠細胞腫、副腎皮質癌、多発性骨髄腫、髄芽腫、子宮内膜癌、食道癌及びユーイング肉腫から選択される一種又は複数種の癌である、請求項7又は8に記載の検査方法。
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