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Cited by 503

The DOI matches its Crossref record; 28 of the 28 references it cites were found in a registry or an index.

Activin A Maintains Pluripotency of Human Embryonic Stem Cells in the Absence of Feeder Layers

Open access
Beattie, Gillian M., Lopez, Ana D., Bucay, Nathan, Hinton, Andrew, Firpo, Meri T., King, Charles C., Hayek, Alberto·2005·STEM CELLS

Abstract

To date, all human embryonic stem cells (hESCs) available for research require unidentified soluble factors secreted from feeder layers to maintain the undifferentiated state and pluripotency. Activation of STAT3 by leukemia inhibitory factor is required to maintain "stemness" in mouse embryonic stem cells, but not in hESCs, suggesting the existence of alternate signaling pathways for self-renewal and pluripotency in human cells. Here we show that activin A is secreted by mouse embryonic feeder layers (mEFs) and that culture medium enriched with activin A is capable of maintaining hESCs in the undifferentiated state for >20 passages without the need for feeder layers, conditioned medium from mEFs, or STAT3 activation. hESCs retained both normal karyotype and markers of undifferentiated cells, including Oct-4, nanog, and TRA-1-60 and remained pluripotent, as shown by the in vivo formation of teratomas.

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Crossref · 10.1634/stemcells.2004-0279

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Metadata

Authors
Beattie, G. M., Lopez, A. D., Bucay, N., Hinton, A., Firpo, M. T., King, C. C., & Hayek, A.
Venue
STEM CELLS
Published
2005-04
Volume
23
Issue
4
Pages
489-495
ISSN
  • 1066-5099 (ISSN-L)
  • 1549-4918
OpenAlex
W2160266371
Cited by
503
References
28
FWCI
17.63
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Activin A Maintains Pluripotency of Human Embryonic Stem Cells in the Absence of Feeder Layers. https://app.cochat.ai/papers/10.1634/stemcells.2004-0279
The paper
Beattie, G. M., Lopez, A. D., Bucay, N., Hinton, A., Firpo, M. T., King, C. C., & Hayek, A. (2005). Activin A Maintains Pluripotency of Human Embryonic Stem Cells in the Absence of Feeder Layers. STEM CELLS. https://doi.org/10.1634/stemcells.2004-0279

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