Hif-2α is not essential for cell-autonomous hematopoietic stem cell maintenance.
Local hypoxia in hematopoietic stem cell (HSC) niches is thought to regulate HSC functions. Hypoxia-inducible factor-1 (Hif-1) and Hif-2 are key mediators of cellular responses to hypoxia. Although oxygen-regulated α-subunits of Hifs, namely Hif-1α and Hif-2α, are closely related, they play overlapping and also distinct functions in nonhematopoietic tissues. Although Hif-1α-deficient HSCs lose their activity on serial transplantation, the role for Hif-2α in cell-autonomous HSC maintenance rem...Expand abstract
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