Journal
NATURE CELL BIOLOGY
Volume 13, Issue 7, Pages 753-U365Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncb2260
Keywords
-
Categories
Funding
- NoE Cells into Organs [LSHM-CT-2003-504468]
- Austrian Science Fund (FWF) [P19281-B16]
- Arthritis Research Campaign (ARC) [18075]
- NIH [R01 GM081619-01]
- Austrian Science Fund (FWF) [P19281] Funding Source: Austrian Science Fund (FWF)
Ask authors/readers for more resources
Canonical Wnt signalling has been implicated in mouse and human embryonic stem cell (ESC) maintenance;however,its requirement is controversial. beta-catenin is the key component in this highly conserved Wnt pathway, acting as a transcriptional transactivator. However, beta-catenin has additional roles at the plasma membrane regulating cell-cell adhesion, complicating the analyses of cells/tissues lacking beta-catenin. We report here the generation of a Ctnnb1 (beta-catenin)-deficient mouse ESC (mESC) line and show that self-renewal is maintained in the absence of beta-catenin. Cell adhesion is partially rescued by plakoglobin upregulation, but fails to be maintained during differentiation. When differentiated as aggregates, wild-type mESCs form descendants of all three germ layers, whereas mesendodermal germ layer formation and neuronal differentiation are defective in Ctnnb1-deficient mESCs. A Tcf/Lef-signalling-defective beta-catenin variant, which re-establishes cadherin-mediated cell adhesion, rescues definitive endoderm and neuroepithelial formation, indicating that the beta-catenin cell-adhesion function is more important than its signalling function for these processes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available