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Related Experiment Video

Updated: Jun 10, 2026

Derivation of Stem Cell Lines from Mouse Preimplantation Embryos
12:59

Derivation of Stem Cell Lines from Mouse Preimplantation Embryos

Published on: August 20, 2017

A comparative analysis of extra-embryonic endoderm cell lines.

Kemar Brown1, Stephanie Legros, Jérôme Artus

  • 1Greenberg Division of Cardiology, Weill Cornell Medical College, New York, New York, United States of America.

Plos One
|August 17, 2010
PubMed
Summary

Extra-embryonic endoderm (ExEn) cell lines lack distinct markers, hindering research into endodermal organ development and signaling. Comparative analysis reveals mixed lineages and identifies novel signaling pathways for ExEn function.

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Area of Science:

  • Developmental Biology
  • Stem Cell Biology
  • Molecular Signaling

Background:

  • Extra-embryonic endoderm (ExEn) and definitive endoderm (DE) have overlapping marker expression, complicating differentiation studies.
  • Accurate distinction between ExEn and DE is crucial for understanding early embryonic development and deriving endodermal cell types in vitro.
  • Existing ExEn-like cell lines (END2, PYS2, XEN) have shown inconsistencies in lineage representation.

Purpose of the Study:

  • To comparatively analyze three ExEn-like cell lines (END2, PYS2, XEN) to clarify their lineage identities.
  • To identify reliable markers for distinguishing between ExEn and DE cell populations.
  • To explore intracellular signaling pathways involved in ExEn function.

Main Methods:

  • Comparative marker expression analysis of END2, PYS2, and XEN cell lines.

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Related Experiment Videos

Last Updated: Jun 10, 2026

Derivation of Stem Cell Lines from Mouse Preimplantation Embryos
12:59

Derivation of Stem Cell Lines from Mouse Preimplantation Embryos

Published on: August 20, 2017

Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos
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Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos

Published on: February 22, 2016

Reprogramming Primary Amniotic Fluid and Membrane Cells to Pluripotency in Xeno-free Conditions
09:34

Reprogramming Primary Amniotic Fluid and Membrane Cells to Pluripotency in Xeno-free Conditions

Published on: November 27, 2017

  • Microarray analysis to refine gene expression datasets distinguishing DE and VE.
  • Genome-wide pathway analysis to identify signaling cascades.

    • Main Results:

    • None of the analyzed cell lines (PYS2, XEN, END2) represent a single, bona fide in vivo lineage.
    • PYS2 and XEN cells exhibited mixed ExEn lineage markers, while END2 cells expressed markers for anterior visceral endoderm and parietal endoderm.
    • SMAD-independent TGFbeta signaling via TAK1/p38/JNK or TAK1/NLK pathways was identified as a potential shared signaling mode in these cell lines.

    Conclusions:

    • The study refines understanding of markers for distinguishing endodermal subtypes.
    • XEN cells show potential as tools for studying ExEn-mediated developmental functions.
    • Non-classical MAP Kinase signaling downstream of TAK1 may mediate ExEn functions.