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Updated: Jun 14, 2026

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal
08:01

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal

Published on: May 30, 2012

An expanded Oct4 interaction network: implications for stem cell biology, development, and disease

Mercedes Pardo1, Benjamin Lang2, Lu Yu1

  • 1Proteomic Mass Spectrometry, Wellcome Trust Sanger Institute, Hinxton, Cambridgeshire CB10 1SA, UK.

Cell Stem Cell
|April 6, 2010
PubMed

Insights

Researchers identified more Oct4-binding proteins in mouse stem cells, revealing key regulators of gene expression and cell identity. Understanding these Oct4 partners illuminates pluripotency and developmental mechanisms.

Area of Science:

  • Stem cell biology
  • Molecular biology
  • Developmental biology

Background:

  • Oct4 is a crucial transcription factor for embryonic stem cell identity and reprogramming.
  • Understanding Oct4's protein interactions is vital for elucidating pluripotency regulation.

Purpose of the Study:

  • To identify an expanded set of Oct4-binding proteins in mouse embryonic stem cells.
  • To characterize the functions and regulation of Oct4-associated proteins.

Main Methods:

  • Proteomics to identify Oct4-binding proteins.
  • Analysis of gene expression changes during differentiation.
  • Literature review of known phenotypes for Oct4-associated proteins and their human orthologs.

Main Results:

  • A significantly expanded set of Oct4-binding proteins was identified.
  • Oct4 partners include gene expression regulators and Oct4 function modulators.
  • Many Oct4 partners are transcriptionally regulated by Oct4 or other stem cell factors.
  • A third of partners change expression during cell differentiation.
  • Mutations in most studied Oct4-associated proteins lead to lethal phenotypes.
  • Human orthologs are linked to developmental disorders and cancer.

Conclusions:

  • The Oct4 interactome provides a comprehensive resource for studying Oct4 function in pluripotency and development.
  • This resource can aid in identifying novel reprogramming factors.
  • Insights into Oct4 partners highlight their critical roles and potential links to disease.

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