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Updated: Jun 18, 2026
08:43
Loss- and Gain-of-function Approach to Investigate Early Cell Fate Determinants in Preimplantation Mouse Embryos
Published on: June 6, 2016
Epigenetic regulatory mechanisms during preimplantation development.
Gareth N Corry1, Borko Tanasijevic, Evan R Barry
1Center for Regenerative Biology, University of Connecticut, Storrs, Connecticut 06269-4243, USA.
Birth Defects Research. Part C, Embryo Today : Reviews
|December 5, 2009
Summary
Epigenetic mechanisms guide early mammalian development, controlling cell fate decisions after fertilization. This review explores how DNA methylation and histone modifications in embryos and stem cells establish cell identity.
Area of Science:
- Developmental Biology
- Epigenetics
- Stem Cell Biology
Background:
- Zygotes undergo critical cell fate decisions and genome reprogramming post-fertilization.
- Epigenetic mechanisms like DNA methylation and histone modifications are crucial for establishing cell identity.
- Pluripotent stem cells offer a model for studying these early developmental processes.
Purpose of the Study:
- To review epigenetic influences during mammalian preimplantation development.
- To assess the conservation of epigenetic pathways in cultured pluripotent stem cells versus intact embryos.
- To clarify similarities between reprogramming in natural and artificial systems.
Main Methods:
- Review of current scientific literature on epigenetics in preimplantation development.
- Analysis of studies using embryonic stem cells and other pluripotent cell systems.
- Comparison of epigenetic mechanisms in vivo and in vitro.
Main Results:
- Epigenetic mechanisms, including DNA methylation, histone modification, and chromatin remodeling, are vital for cell fate determination.
- Cultured stem cells provide a valuable but not perfectly analogous model for studying in vivo epigenetic processes.
- The precise conservation of reprogramming pathways in artificial systems remains an area for further investigation.
Conclusions:
- Epigenetic mechanisms play a critical role in establishing cell fate during early mammalian development.
- Understanding these mechanisms in both natural embryos and in vitro systems is essential for developmental biology.
- Further research is needed to fully elucidate the fidelity of in vitro models for epigenetic reprogramming.
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