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ミトコンドリア膜上に一過性に形成される過渡期細胞死孔の捕捉

Publicly Offered Research

Project AreaIntegrative understanding of biological processes mediated by transient macromolecular complexes; New technology for visualizing physiologically metastable states.
Project/Area Number 22121505
Research Category

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

Allocation TypeSingle-year Grants
Review Section Complex systems
Research InstitutionTokyo Medical and Dental University

Principal Investigator

清水 重臣  東京医科歯科大学, 難治疾患研究所, 教授 (70271020)

Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
Fiscal Year 2011: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2010: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywordsミトコンドリア / アポトーシス / 電子顕微鏡 / 生体膜 / ネクローシス / 膜透過性 / BH3
Research Abstract

アポトーシスの分子機構においては、ミトコンドリアの膜透過性亢進が必須の現象であるにもかかわらず、その膜透過性を担う分子装置の詳細は不明である。そこで本研究においては、このミトコンドリアの膜透過装置の構造と機能の連関を電子顕微鏡による超微形態から解き明かす事を目的として研究を行い、以下の成果を得た。
1、膜透過装置の構造解析:マウス肝から単離したミトコンドリアにBH3ペプチドを投与し、アポトーシス反応を起こさせた後に、電子顕微鏡切片法にてミトコンドリアの膜変化を観察した。その結果、ミトコンドリア外膜の顕著な変形を観察する事ができた。この変化は、変異型BH3ペプチドの投与や、Bakを欠損させたマウス由来のミトコンドリアでは見られなかった事より、アポトーシス時のミトコンドリアの膜透過装置であるものと思われた。
2、原子間力顕微鏡を用いた解析:上記の実験系において、単離ミトコンドリアの膜表面を原子間力顕微鏡にて観察したところ、電子顕微鏡で観察した変化が確認された。
3、膜透過装置関連分子の同定:酵母細胞にBax分子を過剰発現することにより、哺乳動物細胞で誘導されるミトコンドリアの膜透過性亢進を模倣することができる事を見出した。また、酵母の遺伝学を用いて、膜透過装置関連分子の同定に成功した。
4、ミトコンドリアの膜透過装置が活性化する時に、Bak分子が構造変化する事を見出し、活性型Bak特異的抗体を作製した。

Report

(2 results)
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (28 results)

All 2012 2011 2010 Other

All Journal Article (15 results) (of which Peer Reviewed: 15 results) Presentation (10 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Involvement of Beclin 1 in the engulfment of apoptotic cells2012

    • Author(s)
      Konishi A, Arakawa S, Yue Z, Shimizu S
    • Journal Title

      J.Biol.Chem.

      Volume: (epub) Issue: 17 Pages: 13919-13929

    • DOI

      10.1074/jbc.m112.348375

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Shigella Targets Epithelial Tricellular Junctions to Spread Between Cells via a Noncanonical Clathrin-dependent Endocytic Pathway2012

    • Author(s)
      Makoto Fukumatsu
    • Journal Title

      Cell Host & Microber

      Volume: (in press)

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Delayed-onset caspase-dependent massive hepatocyte apoptosis upon Fasactivation in Bak/Bax-deficient mice2011

    • Author(s)
      Hikita, H.
    • Journal Title

      Hepatology

      Volume: VOL. 54 Issue: 1 Pages: 240-251

    • DOI

      10.1002/hep.24305

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spatial coupling of mTOR and autophagy augments secretory/phenotypes2011

    • Author(s)
      Masako Narita
    • Journal Title

      Science

      Volume: 332 Issue: 6032 Pages: 966-970

    • DOI

      10.1126/science.1205407

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stress-activated protein kinase MKK7 regulates axon elongation in the developing cerebral cortex2011

    • Author(s)
      Tokiwa Yamasaki
    • Journal Title

      Journal of Neuroscience

      Volume: 31 Pages: 16872-16883

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] p53 Inhibits Vascular Endothelial Growth Factor Expression in Solid Tumor2011

    • Author(s)
      Y.Yoshioka, et al.
    • Journal Title

      J Surg Res.

      Volume: (印刷中)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Delayed-onset caspase-dependent massive hepatocyte apoptosis upon Fas activation in Bak/Bax-deficient mice2011

    • Author(s)
      H.Hikita, et al.
    • Journal Title

      Hepatology

      Volume: (印刷中)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spatial coupling of mTOR and autophagy augments secretory phenotypes2011

    • Author(s)
      M.Narita, et al.
    • Journal Title

      Science

      Volume: (印刷中)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Involvement of JNK in the regulation of autophagic cell death2010

    • Author(s)
      S.Shimizu, et al.
    • Journal Title

      Oncogene

      Volume: 29 Pages: 2070-2082

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] xCT deficiency accelerates chemically induced tumorigenesis2010

    • Author(s)
      A.Nabeyama, et al.
    • Journal Title

      Proc.Natl.Acad.Ssi.USA

      Volume: 107 Pages: 6436-6441

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Autophagy takes an alternative pathway2010

    • Author(s)
      S.Shimizu, et al.
    • Journal Title

      Autophagy

      Volume: 6 Pages: 290-291

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The role of cyclophilin D in learning and memory2010

    • Author(s)
      A.Mouri, et al.
    • Journal Title

      Hippocampus

      Volume: 20 Pages: 293-304

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cyclophilin D-dependent mitochondrial permeability transition is not involved in neurodegeneration in mnd2 mice2010

    • Author(s)
      K.Ideguchi, et al.
    • Journal Title

      Biochem.Biophys.Res.Commun.

      Volume: 393 Pages: 264-267

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preparation of connexin43-integrated giant Liposomes by a baculovirus expression-liposome fusion method2010

    • Author(s)
      K.Kamiya, et al.
    • Journal Title

      Biotechnol.Bioeng.

      Volume: 107 Pages: 836-843

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Neurodegeneration in mnd2 mutant mice is not prevented by parkin transgene2010

    • Author(s)
      T.Yoshida, et al.
    • Journal Title

      Biochem.Biophys.Res.Commun.

      Volume: 393 Pages: 264-267

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Various Types of Cell Death and Autophagy2011

    • Author(s)
      Shigeomi Shimizu
    • Organizer
      第34回日本分子生物学会年会
    • Place of Presentation
      横浜市
    • Year and Date
      2011-12-15
    • Related Report
      2011 Annual Research Report
  • [Presentation] 生体で見られる様々な細胞死とオートファジー2011

    • Author(s)
      清水重臣
    • Organizer
      第1回横断的腫瘍フォーラム
    • Place of Presentation
      吹田市(招待講演)
    • Year and Date
      2011-12-07
    • Related Report
      2011 Annual Research Report
  • [Presentation] アポトーシスと非アポトーシス細胞死2011

    • Author(s)
      清水重臣
    • Organizer
      第73回日本血液学会
    • Place of Presentation
      名古屋市(招待講演)
    • Year and Date
      2011-10-14
    • Related Report
      2011 Annual Research Report
  • [Presentation] 様々な疾患を惹起するミトコンドリア細胞死孔の解析2011

    • Author(s)
      清水重臣
    • Organizer
      第84回日本生化学会
    • Place of Presentation
      京都市
    • Year and Date
      2011-09-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] オートファジーと神経変性疾患2011

    • Author(s)
      清水重臣
    • Organizer
      「病態に根ざしたALSの新規治療法開発班」平成23年度ワークショップ
    • Place of Presentation
      千代田区(招待講演)
    • Year and Date
      2011-09-22
    • Related Report
      2011 Annual Research Report
  • [Presentation] オートファジーを標的とした難治疾患克服への戦略2011

    • Author(s)
      清水重臣
    • Organizer
      新適塾「難病への挑戦」
    • Place of Presentation
      豊中市(招待講演)
    • Year and Date
      2011-09-02
    • Related Report
      2011 Annual Research Report
  • [Presentation] 細胞死とオートファジーのクロストーク2011

    • Author(s)
      清水重臣
    • Organizer
      日本Cell Death学会
    • Place of Presentation
      文京区
    • Year and Date
      2011-07-29
    • Related Report
      2011 Annual Research Report
  • [Presentation] Alternative macroautophagy2011

    • Author(s)
      Shigeomi Shimizu
    • Organizer
      Parkinson Disease and Mitophagy
    • Place of Presentation
      文京区
    • Year and Date
      2011-06-11
    • Related Report
      2011 Annual Research Report
  • [Presentation] Discovery of Atg5/Atg7-independent alternative macroautophagy2010

    • Author(s)
      S.Shimizu
    • Organizer
      6^<th> Institute network symposium
    • Place of Presentation
      Kanazawa
    • Year and Date
      2010-06-25
    • Related Report
      2010 Annual Research Report
  • [Presentation] A critical role for the autophagy gene Ulk1 in Atg5- independent alternative macroautophagy2010

    • Author(s)
      S.Shimizu
    • Organizer
      Gordon Conference
    • Place of Presentation
      Lucca, Italy
    • Year and Date
      2010-04-25
    • Related Report
      2010 Annual Research Report
  • [Book] 細胞死解析プロトコール2011

    • Author(s)
      清水重臣
    • Total Pages
      223
    • Publisher
      羊土社
    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://www.tmd.ac.jp/mri/pcb/index.html

    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://www.tmd.ac.jp/mri/pcb/index.html

    • Related Report
      2010 Annual Research Report

URL: 

Published: 2010-08-23   Modified: 2018-03-28  

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