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Updated: Jun 1, 2026
08:21
In Vitro Differentiation of Human Pluripotent Stem Cells into Trophoblastic Cells
Published on: March 16, 2017
Post-gastrulation amnioids as a stem cell-derived model of human extra-embryonic development.
Borzo Gharibi1, Oliver C K Inge1, Irene Rodriguez-Hernandez2
1Quantitative Stem Cell Biology Laboratory, The Francis Crick Institute, London NW1 1AT, UK.
Cell
|May 16, 2025
Summary
Researchers developed post-gastrulation amnioids (PGAs), a 3D stem cell model for studying human amnion development. This model reveals GATA3
Area of Science:
- Developmental Biology
- Stem Cell Biology
- Reproductive Biology
Background:
- The amnion is vital for mammalian embryonic development, providing essential support.
- Studying human amnion formation and function is challenging due to limited in vitro models.
Purpose of the Study:
- To develop a novel in vitro model for studying human amnion development.
- To investigate the molecular mechanisms governing amniogenesis.
Main Methods:
- Generation of a 3D embryonic stem cell-derived model of post-gastrulation amnioids (PGAs).
- Recapitulation of extra-embryonic development up to 4 weeks post-fertilization.
- Analysis of GATA3's role in amniogenesis.
Main Results:
- PGAs accurately mimic human amniotic sac development and function.
- GATA3 was identified as both necessary and sufficient for amniogenesis.
- An autoregulatory feedback loop involving extra-embryonic signals was found to regulate amnion formation.
Conclusions:
- The PGA model offers a reproducible and scalable platform for studying embryo-amnion interactions.
- This model facilitates research into early pregnancy development and potential clinical applications.
- The findings elucidate key regulatory mechanisms of amnion specification.
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