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USP25 promotes pathological HIF-1-driven metabolic reprogramming and is a potential therapeutic target in pancreatic cancer
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USP25 promotes pathological HIF-1-driven metabolic reprogramming and is a potential therapeutic target in pancreatic cancer
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Journal Article
USP25 promotes pathological HIF-1-driven metabolic reprogramming and is a potential therapeutic target in pancreatic cancer
2022
Overview
Deubiquitylating enzymes (DUBs) play an essential role in targeted protein degradation and represent an emerging therapeutic paradigm in cancer. However, their therapeutic potential in pancreatic ductal adenocarcinoma (PDAC) has not been explored. Here, we develop a DUB discovery pipeline, combining activity-based proteomics with a loss-of-function genetic screen in patient-derived PDAC organoids and murine genetic models. This approach identifies USP25 as a master regulator of PDAC growth and maintenance. Genetic and pharmacological USP25 inhibition results in potent growth impairment in PDAC organoids, while normal pancreatic organoids are insensitive, and causes dramatic regression of patient-derived xenografts. Mechanistically, USP25 deubiquitinates and stabilizes the HIF-1α transcription factor. PDAC is characterized by a severely hypoxic microenvironment, and
USP25
depletion abrogates HIF-1α transcriptional activity and impairs glycolysis, inducing PDAC cell death in the tumor hypoxic core. Thus, the USP25/HIF-1α axis is an essential mechanism of metabolic reprogramming and survival in PDAC, which can be therapeutically exploited.
The biological roles of deubiquitinating enzymes (DUBs) in pancreatic ductal adenocarcinoma (PDAC) are not fully explored. Here the authors perform activity based proteomics with a loss of function genetic screen and identify that USP25 promotes PDAC growth and survival through HIF-1 protein stability and transcriptional activity.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 13/106
/ 13/109
/ 13/89
/ 13/95
/ 38/47
/ 42/41
/ 49/91
/ 64/60
/ 82/80
/ 96/100
/ Animals
/ Cancer
/ Carcinoma, Pancreatic Ductal - pathology
/ Enzymes
/ Humanities and Social Sciences
/ Humans
/ Hypoxia
/ Mice
/ Pancreatic Neoplasms - metabolism
/ Proteins
/ Science
/ Survival
/ Tumor Microenvironment - genetics
/ Tumors
/ Ubiquitin Thiolesterase - genetics
