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J Cell Biol. 2011 Nov 28;195(5):709-20. doi: 10.1083/jcb.201102131.

Cell cycle regulation in hematopoietic stem cells.

Author information

1
Department of Medicine, Division of Hematology/Oncology, The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA.

Abstract

Hematopoietic stem cells (HSCs) give rise to all lineages of blood cells. Because HSCs must persist for a lifetime, the balance between their proliferation and quiescence is carefully regulated to ensure blood homeostasis while limiting cellular damage. Cell cycle regulation therefore plays a critical role in controlling HSC function during both fetal life and in the adult. The cell cycle activity of HSCs is carefully modulated by a complex interplay between cell-intrinsic mechanisms and cell-extrinsic factors produced by the microenvironment. This fine-tuned regulatory network may become altered with age, leading to aberrant HSC cell cycle regulation, degraded HSC function, and hematological malignancy.

PMID:
22123859
PMCID:
PMC3257565
DOI:
10.1083/jcb.201102131
[Indexed for MEDLINE]
Free PMC Article

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