WO2005061007A1 - 癌の抑制方法 - Google Patents
癌の抑制方法 Download PDFInfo
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- WO2005061007A1 WO2005061007A1 PCT/JP2004/019797 JP2004019797W WO2005061007A1 WO 2005061007 A1 WO2005061007 A1 WO 2005061007A1 JP 2004019797 W JP2004019797 W JP 2004019797W WO 2005061007 A1 WO2005061007 A1 WO 2005061007A1
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- seq
- cancer
- synoviolin
- sequence
- suppressor gene
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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
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/113—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing
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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
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7088—Compounds having three or more nucleosides or nucleotides
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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
- A61P35/00—Antineoplastic agents
- A61P35/02—Antineoplastic agents specific for leukemia
-
- 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
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
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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
- C12N2310/00—Structure or type of the nucleic acid
- C12N2310/10—Type of nucleic acid
- C12N2310/14—Type of nucleic acid interfering nucleic acids [NA]
Definitions
- the present invention relates to a method for activating the p53 tumor suppressor gene and localizing it to the nucleus.
- the present invention also relates to a pharmaceutical composition containing a substance that promotes the activity of a p53 tumor suppressor gene.
- Synopiolin is a novel protein discovered as a membrane protein overexpressed in synovial cells from rheumatic patients (WO02 / 052007). In addition, studies using genetically modified products have revealed that Synoviolin is an essential molecule for the development of rheumatoid arthritis.
- Synoviolin has a RING finger motif. This motif is often found in an enzyme called E3 ubiquitin ligase, which plays an important role in protein ubiquitination, but in fact, syobiolin is one of the features of E3 ubiquitin ligase, It has been shown to have activity (WO02 / 052007).
- p53 is located on chromosome 17 pl3 and is a very important tumor suppressor gene in the development and proliferation of cancer cells.
- p53 recognizes a specific base sequence [5 '-(A / T) GPyPyPy-3')] on DNA and promotes the transcriptional activation of specific genes such as wafl / cipl, GADD45, and BAX . It also (i) suppresses the transcription of many other genes; (ii) interacts with viral oncogenes such as SV40 large T antigen, adenovirus EIB protein, papillomavirus E6, or cellular oncogenes such as mdm2. Physiological functions such as binding and (iii) specific binding to DNA containing mismatches are known.
- An object of the present invention is to provide a method for promoting the activation of a p53 tumor suppressor gene, and a pharmaceutical composition for promoting the activation of a p53 tumor suppressor gene.
- the present inventor has conducted intensive studies in order to solve the above problems.
- synoviolin homo-knockout animal was analyzed in detail, more apoptotic cells were observed than in the wild type, and p53, which is deeply involved in apoptosis induction, was localized in the nucleus. However, it was found to be strongly expressed. Then, they found that by suppressing the function of synoviolin, p53 was activated and the growth of cancer cells was inhibited, thereby completing the present invention.
- the present invention is as follows.
- a pharmaceutical composition comprising an siRNA designed using, as a target sequence, at least one sequence selected from the group consisting of the nucleotide sequences shown in SEQ ID NOs: 2 to 15 among the nucleotide sequences shown in SEQ ID NO: 1.
- the pharmaceutical composition is used for treating cancer.
- the p53 tumor suppressor gene localized in the nucleus can be further irradiated with radiation.
- FIG. 1 is a photograph showing the result of immunohistochemical staining of Synoviolin homonockato mouse embryo fibroblasts (MEFs).
- FIG. 2 is a photograph showing the results of immunohistochemical staining with anti-p53 antibody in syno ⁇ / ⁇ embryos.
- FIG. 3 is a photograph showing the results of Western blotting on an apoptosis-related protein.
- FIG. 4 is a photograph showing the results of identifying p53 phosphorylation sites in syno- MEF cultured cells.
- the present invention is characterized by inhibiting cancer by inhibiting the function of synoviolin to localize and activate the p53 tumor suppressor gene (sometimes simply referred to as p53) in the nucleus.
- p53 tumor suppressor gene sometimes simply referred to as p53
- p53 in the cells When normal cells are exposed to ultraviolet light, etc., p53 in the cells is activated, and as a result, cell growth is stopped. Therefore, by increasing the concentration of p53, the growth of cancer cells can be stopped. In other words, when p53 does not function, the growth of cancer cells is not stopped and cancer progresses. In fact, p53 is rarely found in cells of normal individuals, but about half of cells from cancer patients have this p53 deficient mutation. Even when such mutations have not occurred, some mutations have occurred in the control mechanism of p53, and the tumor suppressor function has been lost. Therefore, it is necessary to make p53 function effectively to suppress the progression of cancer.
- the function of synoviolin was focused on in order to make activation of p53 one of the effective methods for cancer treatment. Then, a synopiolin homo-knockout animal was prepared and analyzed in detail. As a result, a greater number of apoptotic cells were observed than in the wild type. In other words, they found that inhibiting the function of synoviolin promoted the activation of p53, which is deeply involved in apoptosis, and that inhibiting the function of synoviolin leads to cancer suppression.
- apoptosis refers to programmed cell death caused by the cell itself, chromosome aggregation of the cell nucleus, fragmentation of the cell nucleus, loss of cell surface microvilli, aggregation of the cytoplasm, activation of caspase, activation of mitochondrial membrane potential It is characterized by disappearance. When the above characteristics occur in the cell, it is determined that apoptosis has been induced.
- p53 when immunostaining of p53 in a fetal embryo is performed, p53 is strongly expressed in the whole body of a Synoviolin homo-knockout mouse embryo.
- fetal fibroblasts (MEFs) isolated from the fetal embryo of Synoviolin homonockato mouse are more strongly expressed than those isolated from the wild type, and p53 is strongly localized in the nucleus. I do. This nuclear localization is not observed at all in the wild type. This means that p53 can be translocated into the nucleus by inhibiting the expression of synopiolin.
- Synoviolin homo-knockout mouse embryo MEFs show high radiosensitivity. Therefore, in the present invention, when irradiation is performed after inhibiting the expression of synoviolin to transfer p53 to the nucleus, the growth of cancer cells can be effectively suppressed.
- the present invention is characterized in that p53 is activated by phosphorylating a part of amino acids of p53 (p53 protein).
- the target of p53 phosphorylation is preferably a serine residue in the amino acid sequence of p53, and more preferably the 15th serine residue.
- p53 is phosphorylated by kinases such as ATR and ATM, and phosphorylation is thought to increase synthobiolin's activity by inhibiting synoviolin.
- RNA interference can be used.
- RNAi can be induced by designing and synthesizing siRNA (small interfering RNA) for the synoviolin gene and introducing it into cells.
- RNAi means that dsRNA (double-strand RNA) is specific and selective for the target gene. It is a phenomenon that binds and cleaves the target gene to efficiently inhibit its expression. For example, when dsRNA is introduced into a cell, expression of a gene having a sequence homologous to the RNA is suppressed (knocked down).
- siRNA The design of siRNA can be performed as follows.
- the gene is not particularly limited as long as it encodes synoviolin, and any arbitrary region can be used as a candidate.
- any region of Gen Bank Accession number AB024690 SEQ ID NO: 1 can be a candidate.
- a sequence starting with AA is selected from the selected region, and the length of the sequence is 19 to 25 bases, preferably 19 to 21 bases.
- the sequence should have a GC content of, for example, 40 to 60%.
- a DNA containing at least one sequence selected from the following nucleotide sequences among the nucleotide sequences shown in SEQ ID NO: 1 can be used as a target sequence of siRNA. In particular, it targets (i) (SEQ ID NO: 2), (ii) (SEQ ID NO: 3), (vi) (SEQ ID NO: 7), (vii) (SEQ ID NO: 8), (viii) (SEQ ID NO: 9) Is preferred.
- siRNA synthesized in vitro is ligated to plasmid DNA and introduced into cells
- a method in which two RNAs are annealed, and the like can be employed.
- shRNA is an RNA molecule having a stem-loop structure because a part of a single strand forms a complementary strand with another area, which is called a short hairpin RNA (short hairpin RNA).
- shRNAs can be designed such that a portion forms a stem-loop structure. For example, if the sequence of a certain region is sequence A and the complementary strand to sequence A is sequence B, these sequences are present in a single RNA strand so that sequence A, spacer, and sequence B are arranged in this order. And design the total length to be 45-60 bases.
- Sequence A is a sequence of a partial region of the target Synoviolin gene (SEQ ID NO: 1), and the target region is not particularly limited, and any region can be a candidate.
- the length of sequence A is 19 to 25 bases, preferably 19 to 21 bases.
- the shRNA and siRNA produced in the present invention are substances that suppress the expression of Synoviolin and can be used as a pharmaceutical composition for activating p53 (particularly a gene therapy agent for cancer).
- the site of application is not particularly limited, and it may be brain tumor, tongue cancer, pharynx cancer, lung cancer, breast cancer, esophagus cancer, stomach cancer, knee cancer, biliary tract.
- gallbladder cancer duodenal cancer, colon cancer, liver cancer, uterine cancer, ovarian cancer, prostate cancer, kidney cancer, bladder cancer, rhabdomyosarcoma, fibrosarcoma, osteosarcoma, chondrosarcoma, skin cancer, various leukemias (eg (Acute myeloid leukemia, acute lymphocytic leukemia, chronic myelogenous leukemia, chronic lymphocytic leukemia, adult T-cell leukemia, malignant lymphoma).
- various leukemias eg (Acute myeloid leukemia, acute lymphocytic leukemia, chronic myelogenous leukemia, chronic lymphocytic leukemia, adult T-cell leukemia, malignant lymphoma).
- the above-mentioned cancer may be a primary tumor, a metastasized tumor, or a disease associated with another disease.
- a vector incorporating a nucleic acid is administered.
- Method. examples include adenovirus vectors, adeno-associated virus vectors, herpes virus vectors, vaccinia virus vectors, retrovirus vectors, lentivirus vectors, and the like. Efficient use of these virus vectors Can be administered well.
- the pharmaceutical composition of the present invention into phospholipid vesicles such as ribosomes and administer the vesicles.
- the endoplasmic reticulum retaining the siRNA or shRNA is introduced into predetermined cells by the lipofection method. Then, the obtained cells are systemically administered, for example, into a vein or an artery. It can also be administered locally to the brain and the like.
- the dosage of the pharmaceutical composition of the present invention for example a dose in the case of adenovirus 10 6 ⁇ per day:! OIS pieces About 1 to 8 weeks.
- a commercially available gene transfer kit for example, AdenoExpress: Clontech
- AdenoExpress: Clontech a commercially available gene transfer kit
- apoptosis-related proteins in synoviolin homo-knockout mouse (syno) fetal fibroblasts (MEFs) were detected by Western blotting, and the cells were confirmed by immunohistochemical staining.
- the immunostaining method involves fixing MEFs on a slide glass according to a conventional method, and using two types of anti-p53 antibodies (mouse monoclonal antibody BD: Becton, Dickinson, Inc. ⁇ Sagi polyclonal antibody FL393: Santa cruz). Immunostaining was performed. Specimens that had been blocked with 3% bovine serum albumin (BSA) for 30 minutes were immunoreacted with an anti-p53 antibody (BD: 10 pg / ml, FL393: 5 g / ml) diluted with 0.3% BSA at room temperature for 60 minutes. .
- BSA bovine serum albumin
- the specimen was washed with PBS, and immunoreacted with fluorescein isothiocyanate-labeled anti-Peagle IgG antibody or TRITC-labeled anti-mouse IgG antibody (Dako) as a secondary antibody. Confirmation of antigen immunoreactive with anti-p53 antibody is performed with a fluorescence microscope It was.
- This example is an examination of p53 activation in syno mice.
- p53 activation in syno mice was examined by immunostaining using embryos.
- immunostaining of syno-/-fetuses was performed using a Vectostin ABC kit (VECTOR) with the tissue fixed on a slide glass according to a conventional method.
- the specimen blocked with the blocking reagent for 30 minutes was immunoreacted with the anti-p53 antibody FL393 diluted to 5 pg / ml at room temperature for 60 minutes.
- the specimen after the reaction was washed with PBS, and immunoreacted with an HRP-labeled anti-Peacock IgG antibody as a secondary antibody.
- the antigen immunoreactive with the anti-p53 antibody was confirmed by color development of 3,3'-diaminobenzidine tetrahydrochloride based on HRP activity. Methyl green staining was performed as counterstain.
- Apoptosis-related proteins in syno-/-cultured MEF cells were detected by Western blotting.
- cell lysate 15 mM Tris-HCl (pH 7.5), 200 mM NaCL 0.5% NP40, 1 mM PMSF, 0.1% sodium dodecyl sulfate (SDS), 2 pg / ml leptin, 2 pg /
- SDS sodium dodecyl sulfate
- the cell-fractionated fraction was prepared using (ml aprotinin, 2 pg / ml peptide). Then, the cell-fractionated fraction was separated by SDS-polyacrylamide electrophoresis (SDS-PAGE). After SDS-PAGE, cell-derived proteins were transferred to a nitrocellulose (NC) membrane by the electroblotting method.
- NC nitrocellulose
- the NC membrane was treated with Tris-HCl (TBS) containing 5% skim milk for 1 hour at room temperature. After locking, the anti-p53 antibody C-tarminal aa; 195_393 or FL393 was diluted with TBS supplemented with 5% skim milk and immunoreacted at room temperature for 1 hour. After the reaction, the NC membrane was washed with 0.1% Tween20 / TBS, and a horse radish peroxidase (HRP) -labeled anti-Egret Ig G antibody was used as a secondary antibody for immunoreaction at room temperature for 1 hour, and then washed with 0.1% Tween20 / TBS. The target antigen was detected by detecting the HRP activity. For detection of HRP activity, an ECL kit (Amersham) was used (Clinical Chemistry. 25, pl531, 1979).
- HRP activity For detection of HRP activity, an ECL kit (Amersham) was used (Clinical Chemistry. 25, pl531, 1979).
- the phosphorylation site of p53 was probed by Western plotting using an anti-p53 antibody.
- a substance that promotes the activity of a p53 tumor suppressor gene is provided. Since this substance can activate p53 and transfer p53 to the nucleus, it is useful as a pharmaceutical composition for treating cancer. Further, the present invention suppresses the function of synoviolin. Will enable cancer treatment
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JP2005516543A JPWO2005061007A1 (ja) | 2003-12-24 | 2004-12-24 | 癌の抑制方法 |
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JP2003428311 | 2003-12-24 | ||
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006022457A1 (en) * | 2004-08-26 | 2006-03-02 | Locomogene, Inc. | Synoviolin transgenic flies |
WO2006137514A1 (ja) * | 2005-06-23 | 2006-12-28 | Locomogene, Inc. | シノビオリンの発現もしくは機能阻害物質を有効成分とする癌治療剤、および癌治療剤のスクリーニング方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10503361A (ja) * | 1993-10-29 | 1998-03-31 | ボード・オヴ・リージェンツ,ザ・ユニヴァーシティ・オヴ・テキサス・システム | 組換えp53アデノウイルス方法と組成物 |
JPH10512559A (ja) * | 1995-01-17 | 1998-12-02 | ローヌ−プーラン・ロレ・エス・アー | 過増殖症の併用療法 |
JP2001502553A (ja) * | 1996-10-29 | 2001-02-27 | ローヌ―プーラン・ロレ・エス・アー | 抗p53一本鎖抗体フラグメント及びその使用 |
JP2001511815A (ja) * | 1997-02-18 | 2001-08-14 | カンジ,インコーポレイテッド | 新生物の処置における腫瘍抑制遺伝子治療および化学治療の組合せ |
WO2002052007A1 (fr) * | 2000-12-22 | 2002-07-04 | Locomogene, Inc. | Proteine de cellule de membrane synoviale |
JP2002531396A (ja) * | 1998-12-02 | 2002-09-24 | ファイザー・プロダクツ・インク | p53ファミリーのタンパク質の配座安定性を回復するための方法及び組成物 |
WO2003008573A2 (en) * | 2001-07-17 | 2003-01-30 | Anne Josephine Milner | Silencing of gene expression by sirna |
-
2004
- 2004-12-24 WO PCT/JP2004/019797 patent/WO2005061007A1/ja active Application Filing
- 2004-12-24 JP JP2005516543A patent/JPWO2005061007A1/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10503361A (ja) * | 1993-10-29 | 1998-03-31 | ボード・オヴ・リージェンツ,ザ・ユニヴァーシティ・オヴ・テキサス・システム | 組換えp53アデノウイルス方法と組成物 |
JPH10512559A (ja) * | 1995-01-17 | 1998-12-02 | ローヌ−プーラン・ロレ・エス・アー | 過増殖症の併用療法 |
JP2001502553A (ja) * | 1996-10-29 | 2001-02-27 | ローヌ―プーラン・ロレ・エス・アー | 抗p53一本鎖抗体フラグメント及びその使用 |
JP2001511815A (ja) * | 1997-02-18 | 2001-08-14 | カンジ,インコーポレイテッド | 新生物の処置における腫瘍抑制遺伝子治療および化学治療の組合せ |
JP2002531396A (ja) * | 1998-12-02 | 2002-09-24 | ファイザー・プロダクツ・インク | p53ファミリーのタンパク質の配座安定性を回復するための方法及び組成物 |
WO2002052007A1 (fr) * | 2000-12-22 | 2002-07-04 | Locomogene, Inc. | Proteine de cellule de membrane synoviale |
WO2003008573A2 (en) * | 2001-07-17 | 2003-01-30 | Anne Josephine Milner | Silencing of gene expression by sirna |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006022457A1 (en) * | 2004-08-26 | 2006-03-02 | Locomogene, Inc. | Synoviolin transgenic flies |
WO2006137514A1 (ja) * | 2005-06-23 | 2006-12-28 | Locomogene, Inc. | シノビオリンの発現もしくは機能阻害物質を有効成分とする癌治療剤、および癌治療剤のスクリーニング方法 |
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JPWO2005061007A1 (ja) | 2007-07-12 |
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