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Related Experiment Video

Updated: Jun 14, 2026

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

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.

|April 6, 2010

Summary

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.

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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.