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- W2070172358 abstract "Perinatal hypoxia-ischemia may result in long-term neurological deficits. In addition to producing neuron death, HI causes death of neural precursor cells (NPCs) in the developing brain. To characterize the molecular pathways that regulate hypoxia-induced death of NPCs, we treated a mouse neural stem cell line (C17.2 cells) and fibroblastic growth factor II-expanded primary NPCs derived from wild-type or gene-disrupted mice, with oxygen glucose deprivation or the hypoxia mimetics desferrioxamine or cobalt chloride. Neural precursor cells undergoing hypoxia exhibited time- and concentration-dependent caspase-3 activation and cell death, which was significantly reduced by treatment with a broad caspase inhibitor or protein synthesis inhibition. Bax/Bak-deficient NPCs were protected from desferrioxamine-induced death and exhibited minimal caspase-3 activation. Oxygen glucose deprivation or hypoxia-mimetic exposure also resulted in increased hypoxia-inducible factor alpha and bcl-2/adenovirus E1B 19-kd interacting protein 3 (BNIP3) expression. BNIP3 shRNA treatment failed to affect hypoxia-induced caspase-3 activation but inhibited cell death and nuclear translocation of apoptosis-inducing factor, indicating that BNIP3 is an important regulator of caspase-independent NPC death after hypoxia. These studies demonstrate that hypoxia activates both caspase-dependent and -independent NPC death pathways that are critically regulated by multiple Bcl-2 family members." @default.
- W2070172358 created "2016-06-24" @default.
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- W2070172358 date "2009-12-01" @default.
- W2070172358 modified "2023-10-18" @default.
- W2070172358 title "bcl-2/Adenovirus E1B 19-kd Interacting Protein 3 (BNIP3) Regulates Hypoxia-Induced Neural Precursor Cell Death" @default.
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- W2070172358 doi "https://doi.org/10.1097/nen.0b013e3181c3b9be" @default.
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