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Cytoplasmic polyadenylation and deadenylation of maternal RNAs from fully-grown oocyte to 2-cell embryo stages in the mouse

Research Project

Project/Area Number 16570181
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Developmental biology
Research InstitutionDepart.of Organ Regeneration, Graduate School of Med, Shinshu Univ. (2005)
Tokai University (2004)

Principal Investigator

SAKURAI Takayuki  Shinshu Univ., Graduate School of Medicine, Lecturer, 医学研究科, 講師 (80317825)

Co-Investigator(Kenkyū-buntansha) KIMURA Minoru  Tokai Univ., School of Medicine, Professor, 医学部, 教授 (10146706)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2005: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2004: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywordsmouse / fertilized oocyte / embryo / gene expression / maternal RNA / poly (A) tail / translation / transcription / 着床前初期胚 / ポリA鎖伸長 / 接合子型遺伝子発現 / 翻訳制御 / cDNA Library
Research Abstract

The mouse embryonic development during oocyte maturation and fertilized oocyte stage depends on content of maternal RNAs accumulated in the growing oocyte and the translation. It is known that on oocyte maturation, cytoplasmic polyadenylation of the domant maternal mRNAs involved in cell cycle control influence the translational control. Recently, it is reported that even in fertilized oocytes, several maternal RNAs cause the similar phenomenon.
We succeeded in constructing a cDNA library, CPF7, enriched with cDNA derived from maternal RNAs with extended the poly(A) tail in mouse fertilized eggs. We performed RNA blot analysis to examine the elongation in maternal RNAs using 25 representative clones isolated from CPF7 as probes. Various patterns of elongation, shortening, and/or degradation of maternal RNAs were observed from fully-grown oocytes to early 2-cell embryos, and could be roughly classified into 3 types and 7 subtypes. These findings indicate that poly(A) elongation and shortening of maternal RNAs are not restricted to certain types of maternal RNAs but occur in many of them, and suggest a complex mechanism governing modification of the 3' end of maternal RNAs during the oocyte-to-embryo transition. These observations may indicate the possibility that these maternal RNAs provide the proteins required stage-specificlly to mouse embryo by controlling the translational activity and stability based on time-specific size changing of the poly (A) tail and degradation.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (10 results)

All 2006 2005

All Journal Article (10 results)

  • [Journal Article] Strain difference in tolerance to low-temperature treatment of fertilized mouse oocytes2006

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

      Reprod.Med.Biol 5

      Pages: 43-50

    • NAID

      10018116435

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Folliculogenesis following syngenetic transplantation of young murine ovaries into the testes2006

    • Author(s)
      Sato M, Sakurai T, et al.
    • Journal Title

      Reprod.Med.Biol 5

      Pages: 71-77

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Strain difference in tolerance to low-temperature treatment of fertilized mouse oocytes2006

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

      Reprod.Med.Biol. 5

      Pages: 43-50

    • NAID

      10018116435

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Folliculogenesis following syngenetic Transplantation of young murine ovaries into the testes2006

    • Author(s)
      Sato M, Sakurai T, et al.
    • Journal Title

      Reprod.Med.Biol. 5

      Pages: 71-77

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A Novel method for constructing murine cDNA library enriched with maternal mRNAs exhibiting de novo independent post-fertilization polyadenylation2005

    • Author(s)
      Sakurai T, Sato M, Kimura M
    • Journal Title

      Biochem Biophys Res Commun 327

      Pages: 688-699

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Divers patterns of poiy(A) tail elongation and shortning of murine maternal mRNAs from fully-grown oocyte to 2-cell embryo stages2005

    • Author(s)
      Sakurai T, Sato M, Kimura M
    • Journal Title

      Biochem Biophys Res Commun 336

      Pages: 1181-1189

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Temporal developmental arrest after storage of fertilized mouse eggs at 4oC : Effects on embryonic development, maternal mRNA processing and cell cycle2005

    • Author(s)
      Sakurai T, Kimura M, Sato M
    • Journal Title

      Mol.Human Reprod 11

      Pages: 325-333

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] A novel method for constructing cDNA library Enriched with maternal mRNAs exhibiting de novo independent post-fertilization polyadenylation.2005

    • Author(s)
      Sakurai T, Sato M, Kimura M
    • Journal Title

      Biochem Biophys Res Commun. 327

      Pages: 688-699

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Divers patterns of poiy(A) tail elongation and shortning of murine maternal mRNAs from fully-grown oocyte to 2-cell embryo stages2005

    • Author(s)
      Sakurai T, Sato M, Kimura M
    • Journal Title

      Biochem Biophys Res Commun. 336

      Pages: 1181-1190

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A novel method for constructing murine cDNA library enriched with maternal mRNAs exhibiting de novo independent post-fertilization polyadenylation.2005

    • Author(s)
      T.Sakurai, M.Sato, M.Kimura
    • Journal Title

      Biochem.Biophys.Res.Commun. 327(3)

      Pages: 688-699

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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