Notch Signaling and Cross-Talk in Hypoxia: A Candidate Pathway for High-Altitude Adaptation.
Notch Signaling and Cross-Talk in Hypoxia: A Candidate Pathway for High-Altitude Adaptation.
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DOI:
10.3390/life12030437
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发表时间:
2022-03-16
期刊:
影响因子:
--
通讯作者:
Simonson TS
中科院分区:
文献类型:
--
作者:
O'Brien KA;Murray AJ;Simonson TS
Hypoxia triggers complex inter- and intracellular signals that regulate tissue oxygen (O2) homeostasis, adjusting convective O2 delivery and utilization (i.e., metabolism). Human populations have been exposed to high-altitude hypoxia for thousands of years and, in doing so, have undergone natural selection of multiple gene regions supporting adaptive traits. Some of the strongest selection signals identified in highland populations emanate from hypoxia-inducible factor (HIF) pathway genes. The HIF pathway is a master regulator of the cellular hypoxic response, but it is not the only regulatory pathway under positive selection. For instance, regions linked to the highly conserved Notch signaling pathway are also top targets, and this pathway is likely to play essential roles that confer hypoxia tolerance. Here, we explored the importance of the Notch pathway in mediating the cellular hypoxic response. We assessed transcriptional regulation of the Notch pathway, including close cross-talk with HIF signaling, and its involvement in the mediation of angiogenesis, cellular metabolism, inflammation, and oxidative stress, relating these functions to generational hypoxia adaptation.
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