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2013 Fiscal Year Final Research Report

Germ plasm of Xenopus is the determinant of germinal lineage

Research Project

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Project/Area Number 23570259
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Developmental biology
Research InstitutionUniversity of Hyogo

Principal Investigator

WATANABE Kenji  兵庫県立大学, 生命理学研究科, 教授 (00079691)

Project Period (FY) 2011 – 2013
Keywords生殖細胞質 / ミトコンドリア / 決定因子 / 始原生殖細胞 / ゼノパス
Research Abstract

Germ plasm is the determinant of germinal lineage in case of Drosophila and C. elgans. In this work, we have evidenced that this is true also in case of vertebrate. Germ plasm of Xenopus is situated in the cortex of egg vegetal cytoplasm, and contains maternal mRNA, protein and a large amount of mitochondria. We have made a transgenic frog whose mitochondria is EGFP-labelled. On the behalf of unique characteristcs of germline mitochondria, we can trace GP and PGCs in most of a life cycle. When we explant GP into the animal hemisphere (fated to become epidermis), we obtain ectopic PGCs. The ectopic PGCs cannot migrate from the surface position, but they can migrate towards gonads if they are transferred into the endoderm. And, they can become functional gametes.

  • Research Products

    (13 results)

All 2014 2013 2012 2011

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (6 results)

  • [Journal Article] Restriction of the Xenopus DEADSouth mRNA to the primordial germ cells is ensured by multiple mechanisms2014

    • Author(s)
      Yamaguchi T, Kensuke Kataoka K, Watanabe K, and Orii H
    • Journal Title

      Mechanism of Development

      Volume: 131 Pages: 15-23

    • DOI

      10.1016/j.mod.2013.11.002.

    • Peer Reviewed
  • [Journal Article] Germes is involved in translocation of germ plasm during development of Xenopus primordial germ cells2013

    • Author(s)
      Yamaguchi T, Taguchi A, Watanabe K, Orii H
    • Journal Title

      Int J Dev Biol

      Volume: 57(5) Pages: 439-443

    • DOI

      10.1387/ijdb.120215ty.

    • Peer Reviewed
  • [Journal Article] DEADSouth protein localizes to germ plasm and required for the development of primordial germ cells in Xenopus laevis2013

    • Author(s)
      Yamaguchi T., Taguchi A., Watanabe K. Orii H
    • Journal Title

      Biology open

      Volume: 15 Pages: 191-199

    • DOI

      10.1242/bio.20123111.

    • Peer Reviewed
  • [Journal Article] Developmental regulation of locomotive activity in Xenopus primordial germ cells2013

    • Author(s)
      Terayama K. Kataoka K. Morichika K. Orii H. Watanabe K. Mochii M
    • Journal Title

      Dev.Growth Differ

      Volume: 55 Pages: 217-228

    • DOI

      10.1111/dgd.12018.

    • Peer Reviewed
  • [Journal Article] Analysis of localization and reorganization of germ plasm in Xenopus transgenic line with fluorescence-labelled mitochondria2012

    • Author(s)
      Taguchi A. Takii M. Motoishi M. Orii H. Mochii M. Watanabe K
    • Journal Title

      Develop. Growth Differ

      Volume: 54 Pages: 767-776

    • DOI

      10.1111/dgd.12005.

    • Peer Reviewed
  • [Journal Article] Ectopic formation of primordial germ cells by transplantation of the germ plasm:Direct evidence for germ cell determinant in Xenopus2012

    • Author(s)
      Tada,H. Mochii,M. Orii,H. Watanabe,K
    • Journal Title

      Developmental Biology

      Volume: 371 Pages: 86-93

    • DOI

      10.1016/j.ydbio.2012.08.014

    • Peer Reviewed
  • [Journal Article] Germ-line mitochondria exhibit suppressed respiratory activity to support their accurate transmission to the next generation2011

    • Author(s)
      Kogo N., Tazaki,A. Kashino, Y. Morichika,K. Orii,H. Mochii,M. Watanabe,K
    • Journal Title

      Dev. Biol

      Volume: 47 Pages: 511-521

    • DOI

      10.1016/j.ydbio.2010.11.021.

    • Peer Reviewed
  • [Presentation] Locomotive activity of Xenopus primordial germ cell is regulated by extracellular signals invoving SDF-12013

    • Author(s)
      Terayama K, Orii H, Watanabe K
    • Organizer
      第46回日本発生生物学会年会
    • Place of Presentation
      くにびきメッセ、島根県
    • Year and Date
      20130000
  • [Presentation] ミトコンドリアを指標にした生殖細胞質、始原生殖細胞形成の解析2012

    • Author(s)
      渡辺憲二
    • Organizer
      第83回に本道物学会大会
    • Place of Presentation
      大阪大学、大阪府
    • Year and Date
      20120000
  • [Presentation] Ectopic formation of primordial germ cells by transplantation of the germ plasm2012

    • Author(s)
      Tada H, Mochii M, Orii H, Watanabe K
    • Organizer
      14^<th> Internatonal Xenopus Conference
    • Place of Presentation
      Giens Peninsula, France
    • Year and Date
      20120000
  • [Presentation] In vitro studies on migratory activity of Xenopus primordial germ cells2011

    • Author(s)
      Terayama K, Kataoka K, Morichika K, Orii H, Watanabe K, Mochii M
    • Organizer
      第44回日本発生生物学会年会
    • Place of Presentation
      沖縄コンベンションセンター、沖縄県
    • Year and Date
      20110000
  • [Presentation] Germ plasm includes germ cell determinant in Xenopus2011

    • Author(s)
      Tada H, Watanabe K
    • Organizer
      第44回日本発生生物学会年会
    • Place of Presentation
      沖縄コンベンションセンター、沖縄県
    • Year and Date
      20110000
  • [Presentation] アフリカツメガエル始原生殖細胞の移動に関する研究2011

    • Author(s)
      寺山、片岡、森近、渡辺、織井、餅井
    • Organizer
      第82回に本道物学会大会
    • Place of Presentation
      大雪クリスタルホール、北海道
    • Year and Date
      20110000

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Published: 2015-07-16  

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