Transcriptomics

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MYLIP attenuates hypoxia tolerance by inducing K27-linked polyubiquitination and subsequent proteasomal degradation of HIF-α


ABSTRACT: Hypoxia tolerance is mainly controlled by the hypoxia signaling pathway and HIF-1α/2α serve as master regulators in this pathway. Here we identify MYLIP, an E3 ubiquitin ligase thought to specifically target lipoprotein receptors, as a negative regulator of HIF-1α/2α. MYLIP interacts with HIF-1α/2α and catalyzes K27-linked polyubiquitination at lysine 118/442 (HIF-1α) or lysine 117 (HIF-2α). This modification induces proteasomal degradation of HIF-1α, resulting in inhibition of hypoxia signaling. Furthermore, Mylip-deficient bluntsnout bream, zebrafish and mice are more tolerant to hypoxia. These findings reveal a role for MYLIP in regulating hypoxia signaling and identify a target for developing fish strains with high hypoxia tolerance for the benefit of the

ORGANISM(S): Megalobrama amblycephala

PROVIDER: GSE283363 | GEO | 2024/12/04

REPOSITORIES: GEO

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