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Updated: May 21, 2026

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal
Published on: May 30, 2012
E-cadherin and, in its absence, N-cadherin promotes Nanog expression in mouse embryonic stem cells via STAT3
Kate Hawkins1, Lisa Mohamet, Sarah Ritson
1Stem Cell Biology Group, Core Technology Facility, The University of Manchester, Manchester, United Kingdom.
Abstract:
We have recently shown that loss of E-cadherin in mouse embryonic stem cells (mESCs) results in significant alterations to both the transcriptome and hierarchy of pluripotency-associated signaling pathways. Here, we show that E-cadherin promotes kruppel-like factor 4 (Klf4) and Nanog transcript and protein expression in mESCs via STAT3 phosphorylation and that β-catenin, and its binding region in E-cadherin, is required for this function. To further investigate the role of E-cadherin in leukemia inhibitory factor (LIF)-dependent pluripotency, E-cadherin null (Ecad(-/-)) mESCs were cultured in LIF/bone morphogenetic protein supplemented medium. Under these conditions, Ecad(-/-) mESCs exhibited partial restoration of cell-cell contact and STAT3 phosphorylation and upregulated Klf4, Nanog, and N-cadherin transcripts and protein. Abrogation of N-cadherin using an inhibitory peptide caused loss of phospho STAT3, Klf4, and Nanog in these cells, demonstrating that N-cadherin supports LIF-dependent pluripotency in this context. We therefore identify a novel molecular mechanism linking E- and N-cadherin to the core circuitry of pluripotency in mESCs. This mechanism may explain the recently documented role of E-cadherin in efficient induced pluripotent stem cell reprogramming.
Insights
E-cadherin maintains mouse embryonic stem cell pluripotency by promoting Klf4 and Nanog expression through STAT3 phosphorylation. N-cadherin supports this function, revealing a novel cadherin-pluripotency circuitry.
Area of Science:
- Stem cell biology
- Molecular and cell biology
- Developmental biology
Background:
- E-cadherin loss in mouse embryonic stem cells (mESCs) alters transcriptome and pluripotency signaling pathways.
- E-cadherin is crucial for maintaining pluripotency in mESCs.
Purpose of the Study:
- To elucidate the molecular mechanism by which E-cadherin regulates pluripotency in mESCs.
- To investigate the role of E-cadherin and N-cadherin in leukemia inhibitory factor (LIF)-dependent pluripotency.
Main Methods:
- Culture of E-cadherin null (Ecad(-/-)) mESCs in supplemented medium.
- Analysis of transcript and protein expression (Klf4, Nanog, N-cadherin).
- Assessment of STAT3 phosphorylation and cell-cell contact restoration.
- Abrogation of N-cadherin using an inhibitory peptide.
Main Results:
- E-cadherin promotes Klf4 and Nanog expression via STAT3 phosphorylation, requiring β-catenin.
- Ecad(-/-) mESCs partially restore cell-cell contact, STAT3 phosphorylation, and upregulate Klf4, Nanog, and N-cadherin in LIF/BMP medium.
- N-cadherin supports LIF-dependent pluripotency; its abrogation leads to loss of phospho STAT3, Klf4, and Nanog.
Conclusions:
- A novel molecular mechanism links E-cadherin and N-cadherin to the core pluripotency circuitry in mESCs.
- This mechanism may explain E-cadherin's role in induced pluripotent stem cell reprogramming.
- Cadherin-mediated cell adhesion is critical for maintaining stem cell pluripotency.
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