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Related Experiment Video

Updated: Dec 17, 2025

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Maternal factors regulating preimplantation development in mice.

Di Wu1, Jurrien Dean1

  • 1Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD, United States.

Current Topics in Developmental Biology
|June 28, 2020
PubMed
Summary

Maternal factors are crucial for early mammalian development before embryonic genes activate. Their proper accumulation and regulation during oocyte maturation and preimplantation embryogenesis are vital for preventing developmental defects.

Keywords:
Maternal RNA degradationPreimplantation embryonic developmentZygotic genome activation

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Area of Science:

  • Developmental Biology
  • Reproductive Biology
  • Genetics

Background:

  • Mammalian embryogenesis relies on maternal factors from eggs and placental transfer.
  • Early development is critically dependent on maternal contributions due to limited embryonic gene expression.
  • Maternal factors regulate fundamental processes like cell division, transcription, and RNA metabolism.

Purpose of the Study:

  • To review the role of maternal factors in early mammalian development, focusing on preimplantation stages.
  • To explore how maternal factors regulate unique processes such as pronuclear formation and genome reprogramming.
  • To examine the impact of oocyte maturation on the production and function of these essential maternal factors.

Main Methods:

  • Review of recent scientific publications on early mouse development.
  • Synthesis of information from comprehensive reviews covering earlier literature.
  • Focus on maternal effects originating from oocyte maturation and their impact on embryogenesis.

Main Results:

  • Maternal factors uniquely control pronuclear formation, genome reprogramming, and cell fate determination.
  • These factors universally regulate cell division, transcription, and RNA metabolism in early embryos.
  • Disruptions in maternal factor levels can lead to significant developmental defects.

Conclusions:

  • Maternal factors are indispensable for initiating and sustaining mammalian development prior to embryonic genome activation.
  • Understanding oocyte maturation is key to understanding the origins of maternal effects.
  • Proper management of maternal factors is essential for successful preimplantation embryogenesis and preventing developmental abnormalities.