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突然変異の分子病態

Research Project

Project/Area Number 08280104
Research Category

Grant-in-Aid for Scientific Research on Priority Areas (A)

Allocation TypeSingle-year Grants
Research InstitutionNara Institute of Science and Technology

Principal Investigator

真木 寿治  奈良先端科学技術大学院大学, バイオサイエンス研究科, 教授 (20199649)

Co-Investigator(Kenkyū-buntansha) 続 輝久 (續 輝久)  九州大学, 医学部, 教授 (40155429)
葛西 宏  産業医科大学, 産業生態科学研究所, 教授 (40152615)
杉野 明雄  大阪大学, 微生物病研究所, 教授 (90231737)
能美 健彦  国立医薬品食品衛生研究所, 変異遺伝部, 室長(研究職) (30150890)
中村 健司  東京大学, 医科学研究所, 助手 (90253533)
林 健志  九州大学, 遺伝情報実験施設, 教授 (00019671)
Project Period (FY) 1996 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥207,000,000 (Direct Cost: ¥207,000,000)
Fiscal Year 1999: ¥54,000,000 (Direct Cost: ¥54,000,000)
Fiscal Year 1998: ¥54,200,000 (Direct Cost: ¥54,200,000)
Fiscal Year 1997: ¥49,400,000 (Direct Cost: ¥49,400,000)
Fiscal Year 1996: ¥49,400,000 (Direct Cost: ¥49,400,000)
KeywordsDNA複製 / 複製エラー / ミスマッチ修復 / 酵素ラジカル / DNA修復 / フレームシフト / 繰り返し配列 / ノックアウトマウス / 酸素ラジカル / 突然変異 / DNA / DNA組換え / がん遺伝子 / DNAポリメラーゼ / 遺伝子 / 自然突然変異 / 遺伝的不安定性 / がん / 遺伝病
Research Abstract

本研究計画での主要な問題点は自然突然変異の発生原因や変異を抑制する機構の解明と生体でのそれらの制御や生物学的あるいは医学的影響を明らかにすることである。本年度は以下の2つの項目について研究を実施し、新たな知見を得た。
1.自然突然変異の分子機構:DNAポリメラーゼによる複製エラーを解析するための新しい試験管内複製系を構築し、lagging鎖DNA合成での複製エラーの特徴を検討した。これまでの複製フォークでのDNA合成に比較して、lagging鎖合成では10倍程度正確な複製がなされることが判明した。また、校正機能が欠損した場合の複製エラーの特徴についても明らかにし、顕著な鋳型配列依存性が見出された。大腸菌およびヒト細胞において、DNA損傷でのバイパスDNA合成に関与する新規のDNAポリメラーゼを発見し、それらの生化学的特徴付けを行った。酵素ラジカルによる異変原性ヌクレオチドおよびDNA損傷について、試験管内DNA合成系での異変誘発能を詳細に検討した。
2.高等生物における突然変異の特異性:酵素ラジカルによる損傷に起因する突然変異を解析するためにMTH1遺伝子、MSH2遺伝子、および両遺伝子欠損のノックアウトマウスに異変解析用の標的遺伝子を導入した。このマウスでの突然変異率と異変スペクトラムの検討を開始した。染色体上のマイクロサテライトDNAの繰り返し数の変化を引き起こしている変異の発生について、癌関連遺伝子およびそれ以上の遺伝子での発生頻度を検討し、ヒトでのこれらの異変の意義について検討した。

Report

(4 results)
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (45 results)

All Other

All Publications (45 results)

  • [Publications] S.Fujii: "DNA Replication Errors Produced by the Replicative Apparatus of Esherichia coil"J.Mol.Biol.. 289. 835-850 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Seki: "Strand Asymmetry of+1 Frameshift Mutagenesis at Repetitive DNA Sequences by DNA Polymerase III Holoenzyme of Escherichia coil"J.Biol.Chem.. 274. 33313-33319 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Masumoto: "Dpb11 controls the association between DNA polymerase alpha and epsilon, and the ARS region of budding yeast"H.Mol.Cell.Biol.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] L.H.Johnston: "First the CDKs,now the DDKs"Trends Cell Biol. 9. 249-252 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Fujikawa: "The oxidized forms of dATP are substrates for the human MutT homologue,the hMTH1 protein"J.Biol.Chem.. 274. 18201-18205 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Nomoto: "Analysis of 8-hydroxyguanine in rat kidney genomic DNA after administration of renal carcinogen,ferric nitriloacetate"Carcinogenesis. 20. 837-841 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Nishii: "Abnormalities of developmental cell death in Dad1-deficient mice"Genes to Cells. 4. 243-252 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Yanagawa: "Enrichment and efficient screening of ES cells containing a targeted mutation:the use of DT-A gene with the polyadenylation single as a negative selection marker"Transgenic Res.. 8. 215-221 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Sato: "Transgenic mice harboring a full-length human mutant DRPLA gene exhibit age-dependent intergenerational and somatic instabilities of CAG repeats comparable with those in DRPLA patients"Human Molecular Genetics. 8(1). 99-106 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] A.Naito: "Severe osteopetrosis,defective interleukin-1 signalling and lymph node organogenesis in TRAF6-deficient mice"Genes to Cells. 4(6). 353-362 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] J.Wagner: "The dinB gene encodes a novel Escherichia coil DNA polymerase(DNA pol IV) involved in mutagenesis"Mol.Cell. 4. 281-286 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Masumura: "Spectra of gpt mutations in ethylnitrosourea-treated and untreated transgenic mice"Env.Mol.Mutagen.. 34. 1-8 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Hayashi: "Recent enhancements in SSCP"Genetic Analysis:Biomolecular Engineering. 14. 193-196 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Horiuchi: "Association of Fas/APO-1 gene polymorphism with systemic lupus erythematosus in Japanese"Reumatology. 38. 516-520 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] N.Azuma: "Missense mutation in the alternative splice region of the PAX6 gene in eye anomalies"Am.J.Hum.Genet.. 65. 656-663 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Negishi: "Various phenotypic expresion of familial aniridia with a PAX6 mutation"Brit.J.Ophthalmol. 83. 991-992 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Ogi: "Mutation enhancement by DINB1,a mammalian homologue of the Escherichia coil"Genes to Cells. 4(11). 607-618 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] R.Antonio: "Identification of additional genes belonging to the LexA regulon in Escherichia coil mutagenesis protein DinB"mokecular Microbiology. 120(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] D.Matsuzoe: "p53 mutations predict non-small cell lung carcinoma response to radiotherapy"Cancer Letter. 135. 189-194 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] D.Matsuzoe: "Discrimination of double primary lung cancer from intrapulmonary metastasis by p53 gene mutation"Br.J.Cancer. 79. 1549-1552 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Kasai: "DNA modifications by the mutagen glyoxal : adduction to G and C, deamination of C and GC and GA cross-linking" Carcinogenesis. 19. 1459-1465 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Inoue: "Induction of chromosomal gene mutations in Escherichia coli by direct incorporation of oxidatively damaged nucleotides." J.Biol.Chem.273. 11069-11074 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] N.Murata-Kamiya: "Nucleotide excision repair proteins may be involved in the fixation of glyoxal-induced mutagenesis in Escherichia coli." Biochem.Biophys.Res.Commun.248. 412-417 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Tsuzuki: "Embryonic stem cell gene targeting using bacteriophage λ vectors generated by phage-plasmid recombination." Nucl.Acids Res.26. 988-993 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Honda: "Cordiovascular anomaly, impaired action bundling and resistance to Src-induced transformation in mice lacking p130Cas." Nat Genet. 19・4. 361-365 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Watanabe: "Purification and Characterization of Wild-type and Mutant“Classical"Nitroreductases of Salmonella typhimurium: L33R mutition greatly diminishes binding of FMN to the nitroreductase of S.typhimunum." J.Biol.Chem.273. 23922-23928 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] P.Gruz: "Roles of the mutagenesis proteins Sam A'B and Muc A'B in chemically-induced frameshift mutagenesis in Sarmonella typhimurium hisD3052." Mutat.Res.398. 33-42 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kukita: "Characterization of GALC gene in three Japanese patients with adult-onset Krabbe disease" Genetic Testing. 1. 217-223 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Sasaki: "ATM mutations in AT patients screened by hierarchical strategy" Human Mutation. 12. 186-195 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] N.Azuma: "Missense mutation at the C terminus of the PAX6 gene in ocular anterior segment anomalies." Invest.Ophthalmol.Vis.Sci.39. 828-830 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Miyashita: "Intracellular aggregate formation of dentatorubral-pallidoluysian atrophy(DRPLA)protein with the extended polyglutamine." Biochem.Biophys.Res.Comm.249. 96-102 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Takayama: "Expression and location of Hsp 70/Hsc-binding anti-apototic protein BAG-1 and its variants in normal tissues and tumor cell lines." Cancer Res.58. 3116-3131 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Z.-R.Yuan: "Mutational analysis of the Jagged 1 gene in Aragille syndrome families." Hum.Mol.Genet.7. 1363-1369 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Okuyama: "Efficient Fas-ligand gene expression in rodent liver after intra-venous injection of a recombinant adenovirus by the use of a Cre-mediated switching system." Gene Therapy. 5. 1047-1053 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Yasuda: "Inhibition of Escherichia coli RecA coprotease activities by DinI." EMBO J.17. 3207-3216 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Higuchi: "Polymorphism of the 5'-flanking region of human tumor necrosis factor (TNF)- a gene in Japanese." Tissue Antigens. 51. 605-612 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Ikeda M: "Close correlation between mutations of E2F4 and hMSH3 genes in colorectal cancers with microsatellite instability." Cancer Res.58. 594-598 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 真木 寿治: "DNA複製エラーの発生と抑制の分子機構" 生化学. 69. 159-171 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 真木 寿治: "自然突然変異とDNA修復" 実験医学. 15. 1932-1937 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kamiya,H.: "Effects of sequence contexts on misincorporation of nucletides opposite 2-hydroxyadenine." FEBS Letters. 391. 113-116 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Tsuzuki,T.: "Targetted disruption of the DNA repair methyltransferase gene renders mice hypersensitive to alkylating agent." Carcinogenesis. 17. 1215-1220 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Tsuzuki,T.: "Targetted disruption of the Rad 51 gene leads to lethality in embryonic mice." Proc.Natl.Acad.Sci.USA. 93. 6236-6240 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yokoi,M.: "Impairment of hippocampal mossy fiber LTD in mice lacking mGluR2." Science. 273. 645-647 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Azuma,N.: "PAX6 missense mutation in isolated forveal hypoplasia" Nature Genet.13. 141-142 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Inazuka,M.: "One-tube post-PCR fluorescent labeling of DNA fragments" Genome Research. 6. 551-557 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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