Ubiquitin E3 Ligase Ring1b/Rnf2 of Polycomb Repressive Complex 1 Contributes to Stable Maintenance of Mouse Embryonic Stem Cells
2008

Role of Ring1b in Maintaining Mouse Embryonic Stem Cells

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Author Information

Author(s): van der Stoop Petra, Boutsma Erwin A., Hulsman Danielle, Noback Sonja, Heimerikx Mike, Kerkhoven Ron M., Voncken J. Willem, Wessels Lodewyk F. A., van Lohuizen Maarten

Primary Institution: The Netherlands Cancer Institute

Hypothesis

What is the role of Ring1b in the regulation of gene expression during early development in mouse embryonic stem cells?

Conclusion

Ring1b is essential for maintaining an undifferentiated state of mouse embryonic stem cells by repressing genes involved in differentiation and development.

Supporting Evidence

  • Deletion of Ring1b leads to aberrant expression of key developmental genes.
  • Ring1b-deficient ES cells retain expression of important stem cell regulators.
  • Ring1b is required for mono-ubiquitination of H2A in ES cells.
  • Ring1b primarily regulates transcription of genes with high CpG content promoters.
  • Loss of Ring1b results in deregulation of differentiation-related pathways.

Takeaway

Ring1b helps keep stem cells from turning into other types of cells, which is important for their growth and development.

Methodology

The study used Ring1b conditional knockout ES cells and large-scale gene expression analysis to investigate the effects of Ring1b ablation.

Limitations

The study primarily focuses on the immediate effects of Ring1b deletion and may not capture long-term consequences.

Statistical Information

P-Value

p<0.05

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pone.0002235

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