Notch Signaling and Cross-Talk in Hypoxia: A Candidate Pathway for High-Altitude Adaptation.
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Publication Date
2022-03-16ISSN
2075-1729
Language
eng
Type
Article
This Version
VoR
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O'Brien, K. A., Murray, A. J., & Simonson, T. S. (2022). Notch Signaling and Cross-Talk in Hypoxia: A Candidate Pathway for High-Altitude Adaptation.. https://doi.org/10.3390/life12030437
Abstract
Hypoxia triggers complex inter- and intracellular signals that regulate tissue oxygen (O<sub>2</sub>) homeostasis, adjusting convective O<sub>2</sub> 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.
Keywords
Adaptation, Hypobaric hypoxia, Notch signaling, hypoxia-inducible factor
Sponsorship
Marie Curie (890768)
Identifiers
35330188, PMC8954738
External DOI: https://doi.org/10.3390/life12030437
This record's URL: https://www.repository.cam.ac.uk/handle/1810/336439
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