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Related Concept Videos

Cleavage and Blastulation01:33

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After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
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The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...
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Related Experiment Video

Updated: May 11, 2025

Imaging Dpp Release from a Drosophila Wing Disc
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Dppa2 Promotes Early Embryo Development Through Regulating PDH Expression Pattern During Zygotic Genome Activation.

Anqi Di1, Xinyi Zhang1, Lishuang Song1

  • 1State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Science, Inner Mongolia University, Hohhot 010021, China.

International Journal of Molecular Sciences
|April 17, 2025
PubMed
Summary

Dppa2 is crucial for embryonic development, controlling the nuclear entry of tricarboxylic acid cycle enzymes during zygotic genome activation (ZGA). This finding reveals a metabolic regulation mechanism essential for early embryo development.

Keywords:
Dppa2Dppa4DuxPDHTCAzygotic genome activation

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Area of Science:

  • Developmental Biology
  • Metabolic Regulation
  • Epigenetics

Background:

  • Zygotic genome activation (ZGA) is vital for embryonic development and cell fate.
  • The tricarboxylic acid (TCA) cycle fuels ZGA, with core enzymes entering the nucleus.
  • The interaction between ZGA factors and TCA enzymes is not well understood.

Purpose of the Study:

  • To investigate the role of Dppa2 in regulating TCA core enzyme localization during ZGA.
  • To elucidate the mechanism by which Dppa2 influences early embryonic development.

Main Methods:

  • Development of an inducible Dppa2 transgenic mouse model.
  • Analysis of pyruvate dehydrogenase (PDH) nuclear localization in response to Dppa2 expression.
  • Observation of early embryonic development.

Main Results:

  • Dppa2 directly determines the nuclear localization of TCA core enzymes.
  • Early expression of Dppa2 leads to advanced nuclear localization of PDH.
  • Dppa2 is essential for regulating metabolic processes during ZGA.

Conclusions:

  • Dppa2 plays a critical role in ZGA by controlling TCA enzyme localization.
  • This study provides insights into metabolic regulation during early embryonic development.
  • Dppa2 acts as a key link between ZGA factors and metabolic pathways.