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p21によるPCNAの機能制御と細胞のがん化

Research Project

Project/Area Number 08265102
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

釣本 敏樹  奈良先端科学技術大学院大学, バイオサイエンス研究科, 助教授 (30163885)

Co-Investigator(Kenkyū-buntansha) 小布施 力史  奈良先端科学技術大学院大学, バイオサイエンス研究科, 助手 (00273855)
藤田 雅俊  愛知県がんセンター研究所, 研究員 (30270713)
大谷 清  東京医科歯科大, 疾患遺伝子実験センター, 助手 (30201974)
村上 洋太  京都大学, ウイルス研究所, 助教授 (20260622)
正井 久雄  東京大学, 医科学研究所, 助教授 (40229349)
加藤 順也  奈良先端科学技術大学院大学, バイオサイエンス研究科, 助教授 (00273839)
秋山 昌広  奈良先端科学技術大学院大学, バイオサイエンス研究科, 助教授 (80273837)
Project Period (FY) 1996 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥110,400,000 (Direct Cost: ¥110,400,000)
Fiscal Year 1999: ¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1998: ¥37,000,000 (Direct Cost: ¥37,000,000)
Fiscal Year 1997: ¥33,000,000 (Direct Cost: ¥33,000,000)
Fiscal Year 1996: ¥32,900,000 (Direct Cost: ¥32,900,000)
KeywordsDNA複製 / PCNA結合タンパク質 / 細胞周期 / S期 / DNAメチル転移酵素 / クロマチン集合 / DNA修復 / 染色体構造 / ORC / PCNA / 複製開始点結合因子 / S期導入因子 / ライセンシング因子 / MCM / 蛋白質リン酸化 / E2F-1
Research Abstract

PCNAはDNA複製の必須因子であると共に多様な因子と相互作用し、複製が進行した後のDNAの修復、染色体の再構築に深く関わることから、細胞の正常な増殖状態の維持に重要な役割を持つと考えられている。さらにこれにCDK/cyclinの阻害因子であるp21(Cip 1, Waf1)が結合し、その発現量に応じてPCNAの機能を制御する機構が想定されている。このPCNAの機能制御と正常な細胞増殖の状態の維持の関係を明らかにするため、PCNA結合タンパク質の解析およびこの結合に対するp21の影響を解析した。PCNA固定化カラムを用いてPCNA結合タンパク質を網羅的に検索した。その結果、既知を含め、10以上のPCNA結合タンパク質が検出された。この系にp21ペプチドを添加することで、p21によるPCNA結合タンパク質の結合制御を解析することができる。その結果、そのほとんどがp21により結合が抑制されること、その抑制の程度は、結合因子によって特異性があることが明らかになった。さらにPCNA結合因子の個々の特性について解析を行った。DNAメチル転移酵素MeTase)とPCNAの結合の特異性について解析し、PCNAのとの結合により(MeTase)のDNAへの相互作用が促進され、p21がこれを抑制することを示すことができた。MeTase、Fen1エンドヌクレース、クロマチン集合因子等についてPCNA上の結合部位を解析した。その結果、これらはp21やDNAポリメラーゼがPCNA上に結合するのと共通した部位に結合することを見い出し、p21の競合的結合によりこれらの結合が制御されることを明らかにした。以上より、S期核内でPCNAは複製の進行中の染色体構造維持に多面的機能を持ち、p21がそれに対する統括的制御の役割を持つことが示唆される。

Report

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

    (49 results)

All Other

All Publications (49 results)

  • [Publications] Y.Tatsumi: "Association of Human Origin Recognition Complex1with Chromatin DNA and Nuclease-resistant Nuclear Structures"J.Biol.Chem.. 275. 5904-5910 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Hohmura: "AFM with carbon nanotube probe resolves the subunit organization of protein complexes"J Electron.Microsc.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Tsurimoto: "PCNA binding proteins"Front.Biosci. 4. 849-858 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Kobayashi: "Effects of a high-affinity antibody fragment on DNA polymerase reactions near a(6-4) photoproduct site"Photochem.Photobiol.. 69. 226-230 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Oku, T: "Functional sites of human PCNA which interact with p21(Cip1/Waf1), DNA polymerase δ and replication factor C." Genes Cells. 3. 357-369 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tsurimoto, T: "PCNA, a multifunctional ring on DNA." Biochem.Biophys.Acta. 1443. 23-39 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Fujita, M: "Cell cycle dependent topological changes of chromosomal replication origins in Saccharomy-ces cerevisiae" Genes Cells. 3. 737-749 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ohtani, K.: "Regulation of cell growth-dependent expression of mammalian CDC6 gene by the cell cycle transcription factor E2F." Oncogene. 17. 1777-1785 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ohtani, K.: "Cell growth-regulated expression of mammalian MCM5 and MCM6 genes mediated by the transcription factor E2F." Oncogene. in press. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ohtani, K.: "Molecular mechanisms of promoter regulation of the gp34 gene that is trans-activated by an oncoprotein Tax of human T cell leukemia virus type I." J.Biol.Chem.273. 14119-14129 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Urano, T: "p57 Kip2 is degraded through the proteasome in osteoblasts stimulated to proliferation by transforming growth factor β1." J.Biol.Chem.(in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Akamatsu, E.: "Transcription factor E2F and cyclin E/cdk2 complex cooperate to induce chromosomal DNA replication in Xenopus oocytes." J.Biol.Chem.273. 16494-16500 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Kurokawa, K.: "p19ARF prevents G1 cyclin-dependent kinase activation by interacting with MDM2 and activating p53 in mouse fibroblasts." Oncogene. (in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tomoda, K.: "Jab 1 targets the cyclin-dependent kinase inhibitor p27Kip 1 for degradation." J.Biol.Chem.(in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Chen, L.-F.: "The capacity of polymavirus enhancer binding protein 2aB(AML1/Cbta2)to stimulate polyomavirus DNA replication is related to its affinity for the nuclear matrix." Mol.Cell.Biol. 18. 4165-4176 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sanchez, J.P.: "Isolation, characterization and molecular cloning of a protein(Abp2)that binds to a Schizosaccharomyces pombe origin of replication(ars3002)." Mol.Cell.Biol.18. 1670-1681 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tsurumi, T.: "Overexpression, purification, and Helix-destabilizing properties of Epstein-Barr virus single-stranded DNA-binding protein." J.Gen.Virol.79. 1257-1264 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Hiraiwa, A.: "Specific distribution patterns of hCDC47 expression in cutaneous diseases" J.Cutan.Pathol.25. 285-290 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Fujita, M.: "Cell cycle- and chromatin binding state-dependent phosphorylation of human MCM heterohexameric complexes: a role for cdc2 kinase." J.Biol.Chem.273. 17095-17101 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Jonstone, L.: "A Cdc7-Dbf4 kinase activity is conserved from yeast to human." Progress in Cell Cycle Research. (in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Kim, J.M.: "Growth regulation of the expression of mouse cDNA and gene encoding aserine/threonine ki-nase related to S.cerevisiae CDC7 essential for G1/S transition." J.Biol.Chem.273. 23248-23257 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ohtoshi, A.: "Two recessive modes of growth inhibition by exogenously introduced mutant genes: Analysis of mutant CDC28 and CDC7 genes in Saccharomyces cerevisiae." J.Biochem.Mol.Biol.Biophys.1. 253-263 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Hayashi,Y.: "ccal is required for formation of growth-arrested confluent monolayer of rat 3Y1 cells." J.Biol.Chem. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Ohtoshi,A: "Two recessive modes of growth inhibition by exogenously introduced mutant genes : Analysis of mutant CDC28 and CDC7 genes in Saccharomyces cerevisiae." J.Biochem.Mol.Biol.Biophys. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yamashita,M: "The efficiency and timing of the initiation of replication of multi replicons of the chromosome VI of Saccharomyces cerevisiae" Genes to Cells.2. 655-665 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Sears,R.: "Identification of positively and negatively acting elements regulating expression of the E2F2 gene in response to cell growth signals." Mol.Cell.Biol.17. 5227-5235 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Masai,H: "Frpo,a novel single-stranded DNA promoter for transcription and for primer RNA synthesis of DNA replication." Cell. 89. 897-907 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Sato,N: "Human and Xenopus cDNAs encoding budding yeast Cdc7-related kinases : in vitro phosphorylation of MCM subunits by a putative human homologue of Cdc7" EMBOJ.16. 4340-4351 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Fujita,M.: "In vivo interaction of human MCM heterohexameric complexes with chromation : possible involvement of ATP." J.Biol.Chem.272. 10928-10935 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Hiraiwa,A.: "Immunolocalization of hCDC47 protein in normal and neoplastic human tissues and its relation to growth." Int.J.Cancer. 74. 180-184 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Ohotoshi,A.: "Analysis of S.cerevisiae Cdc7 kinase point mutants : Dominant negative inhibition of DNA replication by overexpression of kinase-negative Cdc7 proteins." Mol.Gen.Genet.254. 562-570 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kitagawa,M.: "The consensus motif for phosphorylation by cyclin D1-Cdk4 is different fromthat for phosphorylation by cyclin A/E-Cdk2." EMBOJ. (in press).

    • Related Report
      1996 Annual Research Report
  • [Publications] Azuma,Y.: "Conserved Histidine Residues of RCCI Are Essential for Nucleotide Exchange on Ran." J.Biochem.120. 82-91 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Noguchi,E.: "Dis3,implicated in mitotic control,directly binds to Ran and enhances the GEF activity of RCC1." EMBO Journal. (in press).

    • Related Report
      1996 Annual Research Report
  • [Publications] Fujita,M.: "hCDC47,a human member of the MCM family:dissociation of the nucleus-bound form during S phase." J.Biol.Chem.271. 4349-4354 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Fujita,M.: "Inhibition of S phase entry of human fibroblasts by an antisense oligomer against hCDC47." Biochem.Biophys.Res.Commun.219. 604-607 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Ohotoshi,A.: "Genetic interactions between CDC7 and CDC28:growth inhibition of cdc28-1N by cdc7 point mutants." Genes to Cells. 1. 895-904 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Murakami,Y.: "Identification,purification and molecular cloning of autonomously replicating sequence-binding protein from fission yeast Schizosaccharomyces pombe." Proc.Natl.Acad.Sci.USA. 93. 502-507 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Ishiai,M.: "Purification,gene cloning and reconstitution of the heterotrimeric single-stranded DNA binding protein from Schizosaccharomyces pombe." J.Biol.Chem.271. 20863-20878 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Hori,Y.: "Characterization of a novel CDC gene(ORC1)partly homologous to CDC6 of Saccharomyces cerevisiae." Mol.Biol.Cell.7. 409-418 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Ohba,T.: "Premature Chromatin Condensation Induced by Loss of RCC1 Is Inhibited by GTP-and GTPgS-Ran,but Not GDP-Ran." J.Biol.Chem.271. 14665-14667 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kiyono,T.: "Cloning of a cDNA encoding a human homologue of CDC47,a member of the MCM family." Biochim.Biophys.Acta.1307. 31-34 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Hiraiwa,A.: "Immunolocalization of hCDC47 protein in normal and neoplastic human tissues and its relation to growth" Int.J.Cancer. (in press).

    • Related Report
      1996 Annual Research Report
  • [Publications] Fujita,M.: "In vivo interaction of human MCM heterohexameric complexes with chromation:possible involvement of ATP." J.Biol.Chem.(in press).

    • Related Report
      1996 Annual Research Report
  • [Publications] Ikeda,M.: "CTBP-1/RBP-1 of Saccharomyces cerevisiae protein which binds to T-rich single-stranded DNA containing the 1 base-pair core sequence of autonomously replicating sequence,is a polydeoxypyrimidine binding protein." Eur.J.Biochem.238. 38-47 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Masai,M.: "DnaA-and PriA-dependent primosomes:two distinctreplication complexes for replication of Escherichia coli chromosome." Frontiers in Bioscience. 1. 49-59 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Ikeda,M.: "A rapid and convenient method for screening of DNA binding and protein-interacting molecules by the use of GST fusion protein library." Gene. 181. 167-171 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Masai,H.: "Mecahnisms of primer RNA synthesis andD-loop/R-loop-dependent DNA replication of Escherichia coli." Biochimie. (in press).

    • Related Report
      1996 Annual Research Report
  • [Publications] Ito,K.: "c-Jun stimulates origin-dependent DNA unwinding by polyomavirus large T antigen." EMBOJ.15. 5636-5646 (1996)

    • Related Report
      1996 Annual Research Report

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

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