Selective targeting of cancer stem cells (CSCs) has the potential to prevent cancer relapse. Wang et al. (2011) report that hypoxia-inducible factor 1α (HIF1α) represses Notch signaling to maintain CSC subsets from lymphoma, and that blocking HIF1α activity eliminates lymphoma and human acute myeloid leukemia (AML) CSCs.
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Deletion of the gene encoding an inhibitor of hypoxia-inducible factors increases hypoxia tolerance in zebrafish.
J Biol Chem
October 2018
From the State Key Laboratory of Freshwater Ecology and Biotechnology and
Many aerobic organisms have developed molecular mechanism to tolerate hypoxia, but the specifics of these mechanisms remain poorly understood. It is important to develop genetic methods that confer increased hypoxia tolerance to intensively farmed aquatic species, as these are maintained in environments with limited available oxygen. As an asparaginyl hydroxylase of hypoxia-inducible factors (HIFs), factor inhibiting HIF (FIH) inhibits transcriptional activation of hypoxia-inducible genes by blocking the association of HIFs with the transcriptional coactivators CREB-binding protein (CBP) and p300.
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