• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

The regulation of early phase development of mammalian embryos

Research Project

Project/Area Number 03640620
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 動物発生・生理学
Research InstitutionTeikyo Junior College

Principal Investigator

NAKAMURA Masahisa  TEIKYO JUNIOR COLLEGE ASSOCIATE PROFESSOR, 生活科学科, 助教授 (40130025)

Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1991: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsMouse / Two-cell block / ATP / NaF / Glycolysis / 2-cell block / 初期胚 / 2ーcell block
Research Abstract

This study was undertaken to elucidate the mechanism underlying the inability of mouse embryos to develop in culture past the 2-cell stage (2-cell block). Sodium fluoride (NaF, an inhibitor of enolase in glycolysis) significantly improved the rate of further development of 2-cell embryos in a dose-fashion manner. The removal of glucose and phosphate from the conventional medium improved the rate of development of 2-cell embryos to* 3 cell (42%), but the rate of development of 2-cell embryos to* 3 cells was enhanced (77%) when NaF at 2.5 mM was added to the medium without glucose and phosphate. The effect of NaF at 2.5 mM on ^<14>CO_2 and [^<14>C] lactate production form [^<14>C] glucose was also examined. NaF at 2.5 mM significantly inhibited both ^<14>CO_2 and [^<14>C] lactate production from [6-^<14>C] glucose, but not ^<14>CO_2 production from [1-^<14>C]-glucose, although it had no effect on the uptake of [^3H] deoxy-D-glucose (a non-metabolizable analogue of glucose) by the embryos. When the intracellular level of adenosine triphosphate (ATP) during early development of mouse embryos was examined, it was higher before rather than after cleavage. In addition, the ATP level was much higher before the 2nd cleavage 30 hr after insemination in unblocked embryos than that in blocked ones. These results suggest that the flow rate of glucose in glycolysis may regulate the development of 2-cell embryos to*3 cells, and that the intracellular level of ATP may be critical to early phase of mouse embryo development in vitro.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] NAKAMURA Etal.: "Purificotion and locoligation of a Ca_<2+>-binding protein in huwan sperwatigoa." Human Reproduction. 7. 500-505 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] NAKAMURA Etal.: "Calretiwliu is present in the a crosome of spermatiels of rot testis" Biochew Biophys Res Commun. 186. 668-673 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] NAKAMURA Etal.: "Artisera to calretiwlin in hibits speron motility in mice" Biochem Biphys.Res commun.186. 984-990 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Masahisa Nakamura et al: "Purification and localization of a calcium- binding protein in human spermatozoa" Human Reproduction. 7. 500-505 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Masahisa Nakanura et al: "Calreticulin is present in the acrosome of rat testis" Biochem.Biophys.Res.Commun.186. 668-673 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Masahisa Nakamura et al: "Antisera to calreticulin inhibits sperm matility in mice" Biochem.Biophys.Res.Commun.186. 984-990 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Nakamura et al.: "Purification and localization of a Ca^<2+>-binding protein in human spermatozoa." Human Reproduction. 7. 500-505 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Nakamura et al.: "Calreticulin is present in the a crosome of spermatiols of rat testis" Biochem.Biophys.Res.Commun.186. 668-673 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Nakamura et al.: "Antirera to calreticulin in hibits sperm motility in mice."

    • Related Report
      1992 Annual Research Report

URL: 

Published: 1991-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi