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USP29 is a novel non-canonical Hypoxia Inducible Factor-α activator

Schober, A. S.; Martin-Barros, I.; Martin-Mateos, T.; Perez-Andres, E.; Carlevaris, O.; Pozo, S.; Cortazar, A. R.; Aransay, A. M.; Carracedo, A.; Mayor, U.; See, V.; Berra, E.

2020-02-20 cell biology
10.1101/2020.02.20.957688 bioRxiv
Show abstract

Hypoxia Inducible Factor (HIF) is the master transcriptional regulator that orchestrates cellular adaptation to low oxygen. HIF is tightly regulated via the stability of its -subunit, which is subjected to oxygen-dependent proline hydroxylation by Prolyl-Hydroxylase Domain containing proteins (PHDs/EGLNs), and ultimately targeted for proteasomal degradation through poly-ubiquitination by von-Hippel-Lindau protein (pVHL). However, sustained HIF- signalling is found in many tumours independently of oxygen availability pointing towards the relevance of non-canonical HIF- regulators. In this study, we establish the Ubiquitin Specific Protease 29 (USP29) as direct post-translational activator of HIF- in a variety of cancer cell lines. USP29 binds to HIF-, decreases poly-ubiquitination and thus protects HIF- from proteasomal degradation. Deubiquitinating activity of USP29 is essential to stabilise not only HIF-1 but also HIF-2, via their C-termini in an oxygen/PHD/pVHL-independent manner. Furthermore, in prostate cancer samples the expression of USP29 correlates with the HIF-target gene CA9 (carbonic anhydrase 9) as well as disease progression and severity.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.