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受精・着床の生体内蛍光イメージングと不妊・不育の病態解明

Publicly Offered Research

Project AreaMutli-dimensional fluorescence live imaging of cellular function and molecular activity
Project/Area Number 23113510
Research Category

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

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionOsaka University

Principal Investigator

伊川 正人  大阪大学, 微生物病研究所, 教授 (20304066)

Project Period (FY) 2011-04-01 – 2013-03-31
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
Fiscal Year 2012: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2011: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Keywords遺伝子組換え / 受精 / 精子 / 卵子 / イメージング / 胎盤
Outline of Annual Research Achievements

【目的】本課題では、蛍光タンパク質により生体標識したトランスジェニック精子や卵子を用いて受精の瞬間を捉えると共に、申請者の開発した胎盤特異的な遺伝子操作により着床・妊娠をin vivoイメージングすることを目指した。さらにノックアウトマウスなどのモデル動物を組み合わせて解析を進めることで、不妊・不育の病態解明と治療法開発を目指した。

【受精のイメージング】緑色蛍光タンパク質で精子頭部の先体を、赤色蛍光タンパク質で精子ミトコンドリアを生体標識したトランスジェニックマウスを用いて、多くの遺伝子破壊マウス精子の様子を観察した。その結果、精子膜タンパク質であるPMIS2を欠損するマウスの精子では、ADAM3分子が同時に消失すること、さらにそのマウス精子は子宮から卵管に移行できないために雄性不妊となることを報告した。
さらに、ニポウディスク式の共焦点レーザー顕微鏡と、超高感度EM-CCDカメラを組み合わせて、蛍光タンパク質で標識したトランスジェニックマウス精子のIZUMOタンパク質が、精子が卵子と融合する際に精子先体内から細胞膜上へ出てくる様子の観察を重ね、受精後に精子の先体内膜が卵子に取り込まれる様子などをライブイメージングした。
また、精子が蛍光タンパク質で標識されるトランスジェニックマウスから樹立したES細胞を活用すれば、遺伝子破壊マウスを得るために作製したキメラマウスが雄性不妊であった場合に、精巣から蛍光精子を選び出して未受精卵に顕微授精することで、効率良く個体復元できることを報告した。

Research Progress Status

24年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

24年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (21 results)

All 2013 2012 2011 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (6 results) (of which Invited: 3 results) Remarks (3 results)

  • [Journal Article] Expression of TEX101, regulated by ACE, is essential for the production of fertile mouse spermatozoa2013

    • Author(s)
      FujiharaY, Tokuhiro K, Muro Y, Kondoh G, Araki Y, Ikawa M, Okabe M
    • Journal Title

      PNAS

      Volume: 110(20) Issue: 20 Pages: 8111-6

    • DOI

      10.1073/pnas.1222166110

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Production of mouse pups from germline transmission-failed knockout chimeras.2012

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

      Transgenic Res

      Volume: 22 Issue: 1 Pages: 195-200

    • DOI

      10.1007/s11248-012-9635-x

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mice expressing aberrant sperm-specific protein PMIS2 produce normal-looking but fertilization-incompetent spermatozoa2012

    • Journal Title

      Mol Biol Cell

      Volume: 23 Issue: 14 Pages: 2671-9

    • DOI

      10.1091/mbc.e11-12-1025

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Visualization of the moment of mouse sperm-egg fusion and dynamic localization of IZUMO12012

    • Author(s)
      Satouh Y, Inoue N, Ikawa M, Okabe M
    • Journal Title

      Journal of Cell Science

      Volume: 125 Pages: 4985-4990

    • DOI

      10.1242/jcs.100867

    • NAID

      120006957400

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tetraspanin-interacting protein IGSF8 is dispensable for mouse fertility.2012

    • Author(s)
      Inoue N., et al.
    • Journal Title

      Fertil Steril

      Volume: 98 Issue: 2 Pages: 465-470

    • DOI

      10.1016/j.fertnstert.2012.04.029

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] SPACA1-deficient male mice are infertile with abnormally shaped sperm heads reminiscent of globozoospermia2012

    • Author(s)
      Fujihara Y, Satouh Y, Inoue N, Isotani A, Ikawa M, Okabe M
    • Journal Title

      Development

      Volume: 139 Issue: 19 Pages: 3583-9

    • DOI

      10.1242/dev.081778

    • NAID

      120006957401

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article]2012

    • Author(s)
      Yamaguchi R, Fujihara Y, Ikawa M, Okabe M.Tokuhiro K, Ikawa M, Benham AM, Okabe M
    • Journal Title

      Proc Natl Acad Sci U S A

      Volume: 109 Issue: 10 Pages: 3850-5

    • DOI

      10.1073/pnas.1117963109

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of inclusion bodies with cytoprotective properties formed by seipinopathy-linked mutant seipin2012

    • Author(s)
      Ito D, Yagi T, Ikawa M, Suzuki N
    • Journal Title

      Human Molecular Genetics

      Volume: 21 Issue: 3 Pages: 635-46

    • DOI

      10.1093/hmg/ddr497

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Acrosome-reacted mouse spermatozoa recovered from the perivitelline space can fertilize other eggs2011

    • Author(s)
      Inoue N, Satouh Y, Ikawa M, Okabe M, Yanagimachi R
    • Journal Title

      Proc Natl Acad Sci U S A

      Volume: 108 Issue: 50 Pages: 20008-20011

    • DOI

      10.1073/pnas.1116965108

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamic modification of sphingomyelin in lipid microdomains controls development of obesity, fatty liver, and type 2 diabetes2011

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

      J Biol Chem

      Volume: 286 Issue: 32 Pages: 28544-55

    • DOI

      10.1074/jbc.m111.255646

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Homologous recombination in rat germline stem cells2011

    • Author(s)
      Kanatsu-Shinohara M., et al
    • Journal Title

      Biol Reprod

      Volume: 85 Issue: 1 Pages: 208-17

    • DOI

      10.1095/biolreprod.111.090837

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Formation of a thymus from rat ES cells in xenogeneic nude mouse<--> rat ES chimeras2011

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

      Genes Cells

      Volume: 16 Issue: 4 Pages: 397-405

    • DOI

      10.1111/j.1365-2443.2011.01495.x

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] 遺伝子改変動物を用いた生殖メカニズムの解明2013

    • Author(s)
      伊川 正人
    • Organizer
      第1回実験動物科学シンポジウム(招待講演)
    • Place of Presentation
      京都大学 百周年時計台記念館
    • Year and Date
      2013-02-01
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] 小胞体シャペロンと精子受精能力2012

    • Author(s)
      伊川 正人
    • Organizer
      関西生殖発生毒性フォーラム(招待講演)
    • Place of Presentation
      大阪市立弁天町市民学習センター
    • Year and Date
      2012-11-10
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Placental Gene Manipulation and Its Application in the Study of Placental Biology and Diseases2012

    • Author(s)
      Masahito Ikawa
    • Organizer
      The 2nd SKLRB Symposia on Frontiers in Reproductive Biology(招待講演)
    • Place of Presentation
      Beijing Xijiao Hotel 中国
    • Year and Date
      2012-05-10
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Lentiviral transduetion & placenta-specific gene manipulation to study PE in a mouse model2011

    • Author(s)
      Masahito Ikawa
    • Organizer
      World Congress on Reproductive Biology
    • Place of Presentation
      Cairns, Australia(招待講演)
    • Year and Date
      2011-10-07
    • Related Report
      2011 Annual Research Report
  • [Presentation] Testis specific calreticulin homologue, calsperin, regulates spermfertility2011

    • Author(s)
      Masahito Ikawa
    • Organizer
      9th International Calreticulin Workshop
    • Place of Presentation
      Copenhagen, Denmark(招待講演)
    • Year and Date
      2011-08-29
    • Related Report
      2011 Annual Research Report
  • [Presentation] 胎盤の遺伝子操作とその応用2011

    • Author(s)
      伊川正人
    • Organizer
      第58回日本実験動物学会総会
    • Place of Presentation
      船堀(招待講演)
    • Year and Date
      2011-05-25
    • Related Report
      2011 Annual Research Report
  • [Remarks] 大阪大学研究者総覧

    • URL

      http://www.dma.jim.osaka-u.ac.jp/view?l=jau=867

    • Related Report
      2012 Annual Research Report
  • [Remarks] 研究室HP

    • URL

      http://www.egr.biken.osaka-u.ac.jp/

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www.egr.biken.osaka-u.ac.jp/

    • Related Report
      2011 Annual Research Report

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Published: 2011-04-06   Modified: 2018-03-28  

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