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The genetic program for preimplantation development.

G M Kidder1

  • 1Department of Zoology, University of Western Ontario, London, Canada.

Developmental Genetics
|January 1, 1992
PubMed
Summary
This summary is machine-generated.

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Gene transcription during early mammalian development, particularly in mice, is established early and persists. Most gene expression is not directly tied to key developmental events like compaction or cavitation.

Area of Science:

  • Developmental Biology
  • Genetics
  • Molecular Biology

Background:

  • Preimplantation development involves critical morphogenetic transitions: compaction, cavitation, and blastocoel expansion.
  • Understanding gene transcript accumulation profiles is crucial for deciphering developmental regulation.

Purpose of the Study:

  • To review and synthesize information on gene transcript accumulation during mammalian preimplantation development.
  • To investigate the temporal relationship between gene transcription and major developmental events.

Main Methods:

  • Review of existing literature on gene expression patterns in preimplantation embryos, primarily from mouse models.
  • Analysis of transcript accumulation profiles for individual genes across different developmental stages.

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Main Results:

  • Most gene transcription is initiated early, by the 2-cell or 4-cell stage in mice.
  • Gene expression patterns established early are generally maintained through the blastocyst stage.
  • The timing of most gene transcription does not directly correlate with the timing of morphogenetic transitions.

Conclusions:

  • Temporal regulation of developmental events is likely imposed post-transcriptionally and post-translationally.
  • Early established gene transcription patterns form the foundation for subsequent embryonic development.