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CYLD destabilizes NoxO1 protein by promoting ubiquitination and regulates prostate cancer progression

Title
CYLD destabilizes NoxO1 protein by promoting ubiquitination and regulates prostate cancer progression
Authors
Haq S.Sarodaya N.Karapurkar J.K.Suresh B.Jo J.K.Singh V.Bae Y.S.Kim K.-S.Ramakrishna S.
Ewha Authors
배윤수
SCOPUS Author ID
배윤수scopus
Issue Date
2022
Journal Title
Cancer Letters
ISSN
0304-3835JCR Link
Citation
Cancer Letters vol. 525, pp. 146 - 157
Keywords
Colon cancerCRISPR/Cas9DeubiquitinationProteasomal degradationProteolysisROS
Publisher
Elsevier Ireland Ltd
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
The NADPH oxidase (Nox) family of enzymes is solely dedicated in the generation of reactive oxygen species (ROS). ROS generated by Nox are involved in multiple signaling cascades and a myriad of pathophysiological conditions including cancer. As such, ROS seem to have both detrimental and beneficial roles in a number of cellular functions, including cell signaling, growth, apoptosis and proliferation. Regulatory mechanisms are required to control the activity of Nox enzymes in order to maintain ROS balance within the cell. Here, we performed genome-wide screening for deubiquitinating enzymes (DUBs) regulating Nox organizer 1 (NoxO1) protein expression using a CRISPR/Cas9-mediated DUB-knockout library. We identified cylindromatosis (CYLD) as a binding partner regulating NoxO1 protein expression. We demonstrated that the overexpression of CYLD promotes ubiquitination of NoxO1 protein and reduces the NoxO1 protein half-life. The destabilization of NoxO1 protein by CYLD suppressed excessive ROS generation. Additionally, CRISPR/Cas9-mediated knockout of CYLD in PC-3 cells promoted cell proliferation, migration, colony formation and invasion in vitro. In xenografted mice, injection of CYLD-depleted cells consistently led to tumor development with increased weight and volume. Taken together, these results indicate that CYLD acts as a destabilizer of NoxO1 protein and could be a potential tumor suppressor target for cancer therapeutics. © 2021
DOI
10.1016/j.canlet.2021.10.032
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자연과학대학 > 생명과학전공 > Journal papers
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