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Cited by 342

The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.

Defining the Role of Wnt/β‐Catenin Signaling in the Survival, Proliferation, and Self‐Renewal of Human Embryonic Stem Cells

Dravid, Gautam, Ye, Zhaohui, Hammond, Holly, Chen, Guibin, Pyle, April, Donovan, Peter, Yu, Xiaobing, Cheng, Linzhao·2005·STEM CELLS

Abstract

We used a panel of human and mouse fibroblasts with various abilities for supporting the prolonged growth of human embryonic stem cells (hESCs) to elucidate growth factors required for hESC survival, proliferation, and maintenance of the undifferentiated and pluripotent state (self-renewal). We found that supportive feeder cells secrete growth factors required for both hESC survival/proliferation and blocking hESC spontaneous differentiation to achieve self-renewal. The antidifferentiation soluble factor is neither leukemia inhibitory factor nor Wnt, based on blocking experiments using their antagonists. Because Wnt/beta-catenin signaling has been implicated in cell-fate determination and stem cell expansion, we further examined the effects of blocking or adding recombinant Wnt proteins on undifferentiated hESCs. In the absence of feeder cell-derived factors, hESCs cultured under a feeder-free condition survived/proliferated poorly and gradually differentiated. Adding recombinant Wnt3a stimulated hESC proliferation but also differentiation. After 4-5 days of Wnt3a treatment, hESCs that survived maintained the undifferentiated phenotype but few could form undifferentiated hESC colonies subsequently. Using a functional reporter assay, we found that the beta-catenin-mediated transcriptional activation in the canonical Wnt pathway was minimal in undifferentiated hESCs, but greatly upregulated during differentiation induced by the Wnt treatment and several other methods. Thus, Wnt/beta-catenin activation does not suffice to maintain the undifferentiated and pluripotent state of hESCs. We propose a new model for the role of Wnt/beta-catenin signaling in undifferentiated hESCs.

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Crossref · 10.1634/stemcells.2005-0034

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Metadata

Authors
Dravid, G., Ye, Z., Hammond, H., Chen, G., Pyle, A., Donovan, P., Yu, X., & Cheng, L.
Venue
STEM CELLS
Published
2005-11
Volume
23
Issue
10
Pages
1489-1501
ISSN
  • 1066-5099 (ISSN-L)
  • 1549-4918
OpenAlex
W2156363980
Cited by
342
References
8
FWCI
7.49
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Defining the Role of Wnt/β‐Catenin Signaling in the Survival, Proliferation, and Self‐Renewal of Human Embryonic Stem Cells. https://app.cochat.ai/papers/10.1634/stemcells.2005-0034
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Dravid, G., Ye, Z., Hammond, H., Chen, G., Pyle, A., Donovan, P., Yu, X., & Cheng, L. (2005). Defining the Role of Wnt/β‐Catenin Signaling in the Survival, Proliferation, and Self‐Renewal of Human Embryonic Stem Cells. STEM CELLS. https://doi.org/10.1634/stemcells.2005-0034

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