期刊
ONCOGENE
卷 23, 期 43, 页码 7223-7232出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.onc.1207942
关键词
hematopoietic stem cells; self-renewal; expansion; Hoxb4
The capacity for sustained self-renewal-the generation of daughter cells having the same regenerative properties as the parent cell-is the defining feature of hematopoietic stem cells (HSCs). Strong evidence exists that self-renewal of HSC is under extrinsic biological control in vivo. A variety of cytokines, morphogenic ligands and associated signaling components influence self-renewal in culture and in vivo. Specific homeobox transcription factors act as powerful intrinsic agonists of HSC self-renewal in vitro and in vivo when supplied either as transduced cDNAs or as externally delivered proteins. These findings provide tools for deepening our knowledge of mechanism and for achievement of clinically useful levels of HSC expansion.
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