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生殖細胞における性決定と雄性生殖幹細胞の増殖・分化メカニズム

Research Project

Project/Area Number 15080207
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

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

Principal Investigator

岡部 勝  Osaka University, 微生物病研究所, 教授 (30089875)

Co-Investigator(Kenkyū-buntansha) 伊川 正人  大阪大学, 微生物病研究所, 准教授 (20304066)
蓬田 健太郎  武庫川女子大学, 生活環境学部, 教授 (90283803)
Project Period (FY) 2003 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥154,300,000 (Direct Cost: ¥154,300,000)
Fiscal Year 2007: ¥23,000,000 (Direct Cost: ¥23,000,000)
Fiscal Year 2006: ¥23,300,000 (Direct Cost: ¥23,300,000)
Fiscal Year 2005: ¥36,000,000 (Direct Cost: ¥36,000,000)
Fiscal Year 2004: ¥36,000,000 (Direct Cost: ¥36,000,000)
Fiscal Year 2003: ¥36,000,000 (Direct Cost: ¥36,000,000)
Keywords性分化 / マウス / キメラ / 精原細胞 / インプリント / 生殖細胞 / 性決定 / エピジェネティック / ゲノミックインプリンティング / 雌雄キメラ / 生殖幹細胞 / 分化制御 / c-kit / トランスジェニックマウス / GFP / キメラマウス / 性の分化
Research Abstract

X染色体上にGFP遺伝子が挿入されたマウスを用いると着床前の初期胚の段階で簡単に性の分別を行うことができる。この系を利用して作製・収集したXX型の精原細胞やXXY型精巣において過剰に発現している遺伝子群の発現状況を詳細に検討したところいずれも胎生18.5日目から急激に発現が始まっていることを認めた。またプロゲステロン投与により分娩を遅らせても同時期からの発現上昇と、XX精原細胞の消失時期に変化がないことが確かめちれた。これらは分娩という環境の変化にかかわらず遺伝子発現のカスケードによりXX型細胞の消失につながっていることを示すものであった。またXX型セルトリ細胞の能力について検討を加えたところ、XX型セルトリ細胞は移植した精原細胞を精子にまで分化させる力を持っていることが見出せたが、継続した精子形成支持能はないことが観察された。この原因を探らたところ、自己免疫疾患に似た抗体が産生されていることを発見した。精原細胞が消失してしまう原国としてセルトリ細胞が担っている免疫的なバリアの形成がXXタイプのセルトリ細胞では十分に機能せず、そのために精原細胞が非自己として免疫的に攻撃を受けている可能性が示された。
一方、着床前の胚の遺伝子発現を雌雄で比べることによりRhox5遺伝子がインプリント遺伝子であることを示していたたが、今回は同様にX染色体上にあるFth117クラスター遺伝子がインプリントされている可能性が高いことを見つけた。しかしながらクラスターであるために相互に分別した発現解析が難しく、その役割を明らかにするためにノックアウトでこの領域全体を除去すべくターゲティングベクターを作製した。

Report

(5 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (32 results)

All 2008 2007 2006 2005 2004 Other

All Journal Article (22 results) (of which Peer Reviewed: 4 results) Book (1 results) Publications (9 results)

  • [Journal Article] Possible involvement of CD81 in acrosome reaction of sperm in mice.2008

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

      Mol Reprod Dev 75

      Pages: 150-5

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] PGAP1 knock-out mice show otocephaly and male infertility.2007

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

      J Biol Chem 282

      Pages: 30373-80

    • 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 Dev 65

      Pages: 363-71

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] X-linked GFPマウスを用いた雌雄分別と生殖細胞の動態2007

    • Author(s)
      磯谷 綾子, ほか
    • Journal Title

      蛋白質 核酸 酵素 52

      Pages: 2060-6

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Complementation of placental defects and embryonic lethality by trophoblast-specific lentiviral gene transfer2007

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

      Nat Biotechnol 25(2)

      Pages: 233-237

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Aberrant Distribution of ADAM3 in Sperm from Both Angiotensin-Converting Enzyme (Ace)- and Calmegin (Clgn)-Deficient Mice2006

    • Author(s)
      R.Yamaguchi, et al.
    • Journal Title

      Biol Reprod 75(5)

      Pages: 760-766

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 受精のメカニズム -イズモを中心に卵子と精子の結合に必要な因子とその異常に関連した受精異常について-2006

    • Author(s)
      井上 直和, 伊川 正人, 岡部 勝
    • Journal Title

      産科と婦人科 73(6)

      Pages: 735-742

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 受精の膜融合における必須分子Izumoの同定2006

    • Author(s)
      井上 直和, 岡部 勝
    • Journal Title

      Medical Science Digest 32(10)

      Pages: 416-417

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 遺伝子操作マウスを用いて見る卵子と精子の相互作用2006

    • Author(s)
      岡部 勝
    • Journal Title

      生化学 78(11)

      Pages: 1062-1072

    • NAID

      10019271412

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Comparison of gene expression in male and female mouse blastocysts revealed imprinting of the x-linked gene, rhox5/pem, at preimplantation stgaes.2005

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

      Curr Biol 16(2)

      Pages: 166-172

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Angiotensin-converting enzyme is a GPI-anchored protein releasing factor crucial for fertilization.2005

    • Author(s)
      G.Kondoh, et al.
    • Journal Title

      Nat Med 11(2)

      Pages: 160-166

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Dysregulation of TGF-beta1 receptor activation leads to abnormal lung development and emphysema-like phenotype in core fucose-deficient mice.2005

    • Author(s)
      X.Wang, et al.
    • Journal Title

      Proc Natl Acad Sci U S A 102(44)

      Pages: 15791-15796

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 生殖幹細胞の維持と分化2005

    • Author(s)
      蓬田 健太郎
    • Journal Title

      Hormone Frontier in Gynecology 12(4)

      Pages: 335-340

    • Related Report
      2005 Annual Research Report
  • [Journal Article] A type I DnaJ homolog, DjA1, regulates androgen receptor signaling and spermatogenesis.2005

    • Author(s)
      K.Terada et al.
    • Journal Title

      EMBO J 24(3)

      Pages: 611-622

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Genomic imprinting of XX spermatogonia and XX oocytes recovered from XX{lefrightarrow}XY chimeric testes2005

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

      Proc Natl Acad Sci USA (In press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] The immunoglobulin superfamily protein izumo is requierd for sperm to fuse with eggs2005

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

      Nature 434(7030)

      Pages: 234-238

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Angiotensin-converting enzyme is a GPI-anchored protein releasing factor crucial for fertilization2005

    • Author(s)
      G.Kondoh, et al.
    • Journal Title

      Nat Med 11(2)

      Pages: 160-166

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A type I DanaJ homolog, DiA1, regulates androgen receptor signaling and spermatogenesis.2005

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

      EMBO J. 24

      Pages: 611-622

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Mili, a mammalian member of piwi family gene, is essential for spermatogenesis2004

    • Author(s)
      S.Kuramochi-Miyagawa, et al.
    • Journal Title

      Development 131(4)

      Pages: 839-849

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Functional characterization of a mouse testicular olfactory receptor and its2004

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

      J.Cell.Sci. 117

      Pages: 5835-5845

    • Related Report
      2004 Annual Research Report
  • [Journal Article] In vivo and in vitro constant expression of GATA-4 in mouse postnatal2004

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

      Mol Cell Endocrinol. 214

      Pages: 107-115

    • Related Report
      2004 Annual Research Report
  • [Journal Article] p53 Protein interacts specifically with the meiosis-specific mammalian RecA-like protein DMC1 in meiosis.2004

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

      Carcinogenesis. 25

      Pages: 889-893

    • Related Report
      2004 Annual Research Report
  • [Book] 新編 精子学2006

    • Author(s)
      毛利 秀雄, 岡部 勝 ほか
    • Total Pages
      489
    • Publisher
      東京大学出版会
    • Related Report
      2006 Annual Research Report
  • [Publications] Inoue N.et al.: "Disruption of Mouse CD46 Causes an Accelerated Spontaneous Acrosome Reaction in Sperm."Mol Cell Biol. 23(7). 2614-2622 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kimura T.et al.: "Mouse germ cell-less as an essential component for nuclear integrity."Mol Cell Biol. 23(4). 1304-1315 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tadokoro Y.et al.: "Characterization of Histone H2A.X Expression in Testis and Specific Labeling of Germ Cells at the Commitment Stage of Meiosis with Histone H2A.X Promoter-Enhanced Green fluorescent Protein Transgene."Biol Reprod. 69(4). 1325-1329 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kimura T.et al.: "Conditional loss of PTEN leads to testicular teratoma and enhances embryonic germ cell production."Development. 130(8). 1691-1700 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Terada K.et al.: "Expression of Tom34 splicing isoforms in mouse testis and knockout of Tom34 in mice."J Biochem (Tokyo).. 133(5). 625-631 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Wakabayashi J.et al.: "GATA-1 testis activation region is essential for Sertoli cell-specific expression of GATA-1 gene in transgenic mouse."Genes Cells.. 8(7). 619-630 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tanaka H.et al.: "Novel actin-like proteins T-ACTIN 1 and T-ACTIN 2 are differentially expressed in the cytoplasm and nucleus of mouse haploid germ cells."Biol Reprod. 69(2). 475-482 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Yomogida K.et al.: "Dramatic expansion of germinal stem cells by ectopically expressed human glial cell line-derived neurotrophic factor in mouse Sertoli cells."Biol Reprod. 69(4). 1303-1307 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Iguchi N.et al.: "Isolation and characterization of a novel cDNA encoding a DNA-binding protein (Hils1) specifically expressed in testicular haploid germ cells."Int J Androl. 26(6). 354-365 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2018-03-28  

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