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The molecular mechanism of sperm -egg fusion in mammal

Research Project

Project/Area Number 19687015
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Developmental biology
Research InstitutionOsaka University

Principal Investigator

INOUE Naokazu  Osaka University, 微生物病研究所, 助教 (50379096)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
Fiscal Year 2008: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Fiscal Year 2007: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Keywords受精 / 膜融合 / 精子 / 卵子 / 遺伝子改変動物
Research Abstract

Izumoはほ乳類の受精時に精子側で機能する膜融合因子である。Izumoの免疫グロブリン様ドメイン内に存在するN結合型糖鎖の機能を明らかにするために、非糖鎖型のミュータントIzumoを発現するマウスを作製した(N204QIzumo)。その結果、N204QIzumoの精子がほとんど精子-卵子の膜融合をしていないことが分かった。この原因は、精子の成熟過程で機能型Izumoが分解され、減少していることであった。このことから、IzumoのN結合型糖鎖はタンパク質の安定性に機能していることが明らかになった。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (20 results)

All 2008 2007 Other

All Journal Article (10 results) (of which Peer Reviewed: 8 results) Presentation (7 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Sperm-egg fusion assay in mammals2008

    • Author(s)
      Inoue, N, Okabe, M.
    • Journal Title

      Methods Mol Biol 475

      Pages: 335-42

    • Related Report
      2008 Final Research Report
  • [Journal Article] Putative sperm fusion protein IZUMO and the role of N-glycosylation2008

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

      Biochem Biophys Res Commun 377

      Pages: 910-4

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Mechanisms of sperm-egg interactions emerging from gene-manipulated animals2008

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

      Int J Dev Biol 52

      Pages: 657-64

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 目で見るリプロダクションの基礎2008

    • Author(s)
      伊川正人, 井上直和, 岡部勝
    • Journal Title

      HORMONE FRONTIER IN GYNECOLOGY 9

      Pages: 182-185

    • Related Report
      2008 Final Research Report
  • [Journal Article] Putative sperm fusion protein IZUMO and the role of N-glycosylation2008

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

      Biochem Biophys Res Commun. 377

      Pages: 910-904

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanisms of sperm-egg interactions emerging from gene-manipulated animals2008

    • Author(s)
      Ikawa, M.
    • Journal Title

      Int J Dev Biol. 52

      Pages: 657-664

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sperm-egg interaction and gene manipulated animals2007

    • Author(s)
      Inoue, N., Yamaguchi, R., Ikawa, M., Okabe, M.
    • Journal Title

      Soc Reprod Fertil Suppl 65

      Pages: 363-71

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Positive expression of the immunoglobulin superfamily protein IZUMO on human sperm of severely infertile male patients2007

    • Author(s)
      Hayasaka, S., Terada, Y., Inoue, N., Okabe, M., Yaegashi, N. and Okamura, K.
    • Journal Title

      Fertil Steril 88

      Pages: 214-6

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Positive expression of the immunoglobulin superfamily protein IZUMO on human sperm of severe male infertile patients.2007

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

      Fertil Steril 88

      Pages: 214-216

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sperm-egg interaction and gene manipulated animals.2007

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

      Soc Reprod Fertil Suppl 65

      Pages: 363-371

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] 受精の膜融合因子IzumoのN結合型糖鎖の役割2008

    • Author(s)
      井上直和
    • Organizer
      第27回日本アンドロロジー学会
    • Place of Presentation
      京都市先斗町歌舞練場
    • Year and Date
      2008-07-04
    • Related Report
      2008 Annual Research Report
  • [Presentation] ほ乳類の受精の膜融合における分子メカニズム2008

    • Author(s)
      井上直和
    • Organizer
      第53回日本生殖医学会(シンポジウム : 招待)
    • Related Report
      2008 Final Research Report
  • [Presentation] 受精の膜融合因子IzumoのN結合型糖鎖の役割2008

    • Author(s)
      井上直和, 岡部勝
    • Organizer
      第27回日本アンドロロジー学会(口頭発表)
    • Related Report
      2008 Final Research Report
  • [Presentation] ほ乳類の受精の膜融合因子イズモのN結合型糖鎖の役割2007

    • Author(s)
      井上直和, ら
    • Organizer
      第30回日本分子生物学会年会
    • Place of Presentation
      横浜
    • Year and Date
      2007-12-12
    • Related Report
      2007 Annual Research Report
  • [Presentation] The role of N-glycan of sperm-egg fusion protein Izumo2007

    • Author(s)
      井上直和, 岡部勝
    • Organizer
      第30回日本分子生物学会(ポスター発表)
    • Related Report
      2008 Final Research Report
  • [Presentation] 受精の膜融合における免疫グロブリンスーパーファミリーIzumoの役割2007

    • Author(s)
      井上直和
    • Organizer
      第78回日本動物学会(シンポジウム : 招待)
    • Related Report
      2008 Final Research Report
  • [Presentation] 受精の膜融合における免疫グロブリンスーパーファミリーIzumoの役割2007

    • Author(s)
      井上直和, 萩原義久, 岡部勝
    • Organizer
      第7回日本蛋白質科学会(ワークショップ)
    • Related Report
      2008 Final Research Report
  • [Book] Cell Fusion2008

    • Author(s)
      Inoue, N.
    • Publisher
      Humana Press
    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://kumikae01.gen-info.osaka-u.ac.jp/members/inoue/Site/About%20Me.html

    • Related Report
      2008 Final Research Report
  • [Remarks]

    • URL

      http://kumikae01.gen-info.osaka-u.ac.jp/EGR/index.cfm

    • Related Report
      2007 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

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