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2010 Fiscal Year Annual Research Report

転写共役修復とタンパク質リモデリング

Planned Research

Project AreaCoupling of replication, repair and transcription, and their common mechanism of chromatin remodeling
Project/Area Number 22131009
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Research InstitutionOsaka University

Principal Investigator

田中 亀代次  大阪大学, 大学院・生命機能研究科, 教授 (80144450)

Keywordsヌクレオチド除去修復 / 色素性乾皮症 / コケイン症候群 / 紫外線高感受性症候群 / ヌクレオソーム / ユビキチンリガーゼ / MMXD複合体 / TFIIH
Research Abstract

ヌクレオチド除去修復(nucleotide excision repair:NER)機構に異常を持つ色素性乾皮症
(xeroderma pigmentosum:XP)、コケイン症候群(Cockayne syndrome:CS)の原因遺伝子産物の機能解析、紫外線高感受性症候群(UV-sensitive syndrome:UV^5S)遺伝子のクローニング、それらに欠損をもつ患者の分子病態の解析を研究目的とした。平成22年度に以下のような成果を得た。(1)ヌクレオチド除去修復におけるXPA蛋白質とRPAの相互作用の意義を解析した。(2)紫外線損傷部位におけるDDB2(XPE)ユビキチンリガーゼ複合体の機能とその活性制御機構の解析を、再構成モノヌクレオソーム系を用いて解析した。(3)UV^5S患者UV^51KOはCSB遺伝子のヌル突然変異をホモ接合性に持ち、CSB蛋白質は完全に欠損していた。他方、CS徴候を示すCS-B患者では何らかの短縮CSB蛋白質が生成されていた。そして、短縮CSB蛋白質がカンプトテシン処理後のDNA topoisomerase I-DNA covalent complexの修復過程を阻害することを明らかにした。(4)TFIIH非依存性のXPD新規蛋白質複合体(MMXDと命名)を同定し、それが染色体分配に関与すること、XP-D及びXP-D/CS患者細胞では染色体分配の異常が高頻度に認められることを明らかにした。(5)転写と共役した修復に関与するが、これまで未知であったUV^5S/A群(Kps3患者)原因遺伝子を、マウス単一染色体移入、CGH array法等を用いることによりクローニングすることができた。

  • Research Products

    (19 results)

All 2011 2010 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (10 results) Remarks (1 results)

  • [Journal Article] Nucleotide excision repairby mutant xeroderma pigmentosum groupA (XPA) proteins with deficiency in interaction with RPA.2011

    • Author(s)
      Masafumi Saijo
    • Journal Title

      Journal of Biological Chemistry

      Volume: 286 Pages: 5476-5483

    • Peer Reviewed
  • [Journal Article] Mutant Cockayne syndrome group B protein inhibits repair of DNA topoisomerase I-DNA covalent complex.2011

    • Author(s)
      Katsuyoshi Horibata
    • Journal Title

      Genes to Cells

      Volume: 16 Pages: 101-114

    • Peer Reviewed
  • [Journal Article] A Japanese trichothiodystrophy patient with XPD mutations.2011

    • Author(s)
      Touhei Usuda
    • Journal Title

      Journal of Human Genetics

      Volume: 56 Pages: 77-79

    • Peer Reviewed
  • [Journal Article] Spermatogenesisis not impaired in a nucleotide excision repair-deficient Min mouse model with or without neonatal mutagen.2011

    • Author(s)
      Ashild, Andreassen
    • Journal Title

      International Journal of Andrology

      Volume: (In press)

    • Peer Reviewed
  • [Journal Article] MMXD, a TFIIH-independent XPD-MMS19 protein complex involved in chromosome segregation.2010

    • Author(s)
      Shinsuke Ito
    • Journal Title

      Molecular Cell

      Volume: 39 Pages: 632-640

    • Peer Reviewed
  • [Journal Article] The DDB2 complex-mediated ubiquitylation around DNA damage is oppositely regulated by XPC and Ku, and contributes to the recruitment of XPA.2010

    • Author(s)
      Arato Takedachi
    • Journal Title

      Molecular and Cellular Biology

      Volume: 30 Pages: 2708-2723

    • Peer Reviewed
  • [Journal Article] Influences of p53 deficiency on the apoptotic response, DNA damage removal and mutagenesis in UVB-exposed mouse skin.2010

    • Author(s)
      Hironobu Ikehata
    • Journal Title

      Mutagenesis

      Volume: 25 Pages: 397-405

    • Peer Reviewed
  • [Journal Article] No inhibitory effects of (-)-epigallocatechin gallate and lycopene on spontaneous hepatocarcinogenesis in C3H/HeN mice.2010

    • Author(s)
      Yoshihisa Takahashi
    • Journal Title

      Fukushima J.Medical Science

      Volume: 56 Pages: 17-27

    • Peer Reviewed
  • [Presentation] MMXD:染色体分配に関与するTFIIH非依存性XPDタンパク質複合体2010

    • Author(s)
      田中亀代次
    • Organizer
      第33回日本分子生物学会年会
    • Place of Presentation
      神戸(招待講演)
    • Year and Date
      2010-12-07
  • [Presentation] DDA1によるDDB2ユビキチンリガーゼ複合体形成の制御2010

    • Author(s)
      末友寿実
    • Organizer
      第33回日本分子生物学会年会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-07
  • [Presentation] The DDB2 complex-mediated ubiquitylation around DNA damage is oppositely regulated by XPC and Ku, and contributes to the recruitment of XPA2010

    • Author(s)
      Arato Takedachi
    • Organizer
      第33回日本分子生物学会年会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-07
  • [Presentation] Molecular cloning of the UVSSA gene for UV-sensitive syndrome with deficiency in transcription-coupled repair2010

    • Author(s)
      Xue Zhang
    • Organizer
      第33回日本分子生物学会年会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-07
  • [Presentation] Analysis of the interaction between XPF and bipolar motor prote in Eg52010

    • Author(s)
      Li Jing Tan
    • Organizer
      第33回日本分子生物学会年会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-07
  • [Presentation] Molecular characterization of apatient with UV-sensitivity and de novo unbalanced translocation between chromosome 6p and 10q2010

    • Author(s)
      Dawn Koh
    • Organizer
      第33回日本分子生物学会年会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-07
  • [Presentation] DNA修復異常症におけるDNA損傷応答の違いによる脳神経病変への関与-ATLD、NBS、XPAの神経病変2010

    • Author(s)
      中根裕信
    • Organizer
      第33回日本分子生物学会年会
    • Place of Presentation
      神戸(招待講演)
    • Year and Date
      2010-12-07
  • [Presentation] Regulation of the formation of DDB2-E3 complex by DDA12010

    • Author(s)
      Hisami Suetomo
    • Organizer
      The 7th International 3R Symposium
    • Place of Presentation
      富山
    • Year and Date
      2010-10-26
  • [Presentation] The DDB2 complex-mediated ubiquitylation around DNA damage is oppositely regulated by XPC and Ku, and contributes to the recruitment of XPA2010

    • Author(s)
      Arato Takedachi
    • Organizer
      The 7th International 3R Symposium
    • Place of Presentation
      富山
    • Year and Date
      2010-10-26
  • [Presentation] XPD forms a TFIIH-independent protein complex involved in chromosome segregation2010

    • Author(s)
      Kiyoji Tanaka
    • Organizer
      Workshop on XERODERMA PIGMENTOSUM AND OTHER DISEASES OF HUMAN PREMATURE AGING AND DNA REPAIR : MOLECULES TO PATIENTS
    • Place of Presentation
      Virginia, USA(招待講演)
    • Year and Date
      2010-09-21
  • [Remarks]

    • URL

      http://www.fbs.osaka-u.ac.jp/labo/03a.html

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Published: 2012-07-19  

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