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Amniogenesis in embryos and stem cell models.

Timothy Theodore Ka Ki Tam1,2, Shao Xu3,4, Yunfan Li3,4

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Summary
This summary is machine-generated.

Amnion formation (amniogenesis) is crucial for embryo development. This review compares human amniogenesis to other species and explores stem cell models for future research.

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Area of Science:

  • Developmental Biology
  • Stem Cell Biology
  • Reproductive Biology

Background:

  • The amnion is a transient extra-embryonic tissue essential for amniote embryogenesis.
  • Understanding amniogenesis is key to advancing stem cell-based regenerative medicine models.
  • Recent progress offers insights into amniotic lineage emergence and function.

Purpose of the Study:

  • To review the process of amniogenesis, focusing on human and primate development.
  • To compare different modes of amniogenesis across species (cavitation vs. folding).
  • To discuss lineage plasticity, germ cell fate, and the two-wave amniogenesis model.

Main Methods:

  • Comparative analysis of amniogenesis across species (humans, non-human primates, mice, pigs).
  • Review of the two-wave amniogenesis model and its link to pluripotency.
  • Summary of recent advancements in stem cell-based human embryo models.

Main Results:

  • Human and primate amniogenesis primarily involves cavitation, contrasting with folding in mice and pigs.
  • The role of lineage plasticity in primate amniogenesis and germ cell specification remains under investigation.
  • Stem cell models show promise in studying amniotic formation and function.

Conclusions:

  • Amniogenesis mechanisms vary significantly across amniote species.
  • Further research, particularly using stem cell models, is needed to fully elucidate amniogenesis and its implications for developmental biology and regenerative medicine.