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Cell Stem Cell. 2010 Aug 6;7(2):150-61. doi: 10.1016/j.stem.2010.07.007.

Oxygen in stem cell biology: a critical component of the stem cell niche.

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  • 1Department of Neurosurgery and Oncology, Brain Tumor Stem Cell Laboratory, The Johns Hopkins School of Medicine, Baltimore, MD 21231, USA.

Abstract

The defining hallmark of stem cells is their ability to self-renew and maintain multipotency. This capacity depends on the balance of complex signals in their microenvironment. Low oxygen tensions (hypoxia) maintain undifferentiated states of embryonic, hematopoietic, mesenchymal, and neural stem cell phenotypes and also influence proliferation and cell-fate commitment. Recent evidence has identified a broader spectrum of stem cells influenced by hypoxia that includes cancer stem cells and induced pluripotent stem cells. These findings have important implications on our understanding of development, disease, and tissue-engineering practices and furthermore elucidate an added dimension of stem cell control within the niche.

Copyright 2010 Elsevier Inc. All rights reserved.

PMID:
20682444
[PubMed - indexed for MEDLINE]
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