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Updated: Jul 4, 2025
08:01
Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal
Published on: May 30, 2012
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OCT4 is expressed in extraembryonic endoderm stem (XEN) cell progenitors during somatic cell reprogramming
Alexandra Moauro1,2, Stephanie L Hickey3, Michael A Halbisen3
1Molecular, Cellular and Integrative Physiology Ph.D. Program, Michigan State University, East Lansing, MI, 48824.
Biorxiv : the Preprint Server for Biology
|February 8, 2024
Summary
Induced XEN cells form during reprogramming, even without Oct4 overexpression. This suggests a natural pathway to XEN cell development is integral to establishing pluripotency, mirroring early embryonic development.
Area of Science:
- Stem cell biology
- Developmental biology
- Cellular reprogramming
Background:
- Embryonic stem (ES) and extraembryonic endoderm stem (XEN) cells arise together from the inner cell mass (ICM) during mouse blastocyst development.
- Somatic cell reprogramming using Oct4, Sox2, Klf4, and Myc (OSKM) generates induced pluripotent stem (iPS) cells and induced XEN (iXEN) cells.
- The role of Oct4 in generating both cell types during reprogramming is not fully understood, though it has been linked to non-pluripotent outcomes.
Conclusions:
- iXEN cell generation is not strictly dependent on Oct4 overexpression.
- A pathway for XEN cell differentiation appears to be an intrinsic component of the pluripotency establishment process during reprogramming.
- These findings parallel the simultaneous specification of ES and XEN cell progenitors in early embryonic development.
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