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Leocadio, D.; Mitchell, A.; Winder, S.J. (2016)
Publisher: Wiley
Journal: Journal of Cellular Biochemistry
Languages: English
Types: Article
Subjects: PROSTATE CANCER, DYSTROGLYCAN, Articles, Article, PROTEOLYSIS

Classified by OpenAIRE into

mesheuropmc: animal structures, musculoskeletal diseases, fungi, congenital, hereditary, and neonatal diseases and abnormalities, musculoskeletal system
ABSTRACT Dystroglycan is frequently lost in adenocarcinoma. ??dystroglycan is known to become hypoglycosylated due to transcriptional silencing of LARGE, whereas ??dystroglycan is proteolytically cleaved and degraded. The mechanism and proteases involved in the cleavage events affecting ??dystroglycan are poorly understood. Using LNCaP prostate cancer cells as a model system, we have investigated proteases and tyrosine phosphorylation affecting ??dystroglycan proteolysis and nuclear targeting. Cell density or phorbol ester treatment increases dystroglycan proteolysis, whereas furin or ??secretase inhibitors decreased dystroglycan proteolysis. Using resveratrol treatment of LNCaP cells cultured at low cell density in order to up?regulate notch and activate proteolysis, we identified significant increases in the levels of a 26?kDa ??dystroglycan fragment. These data, therefore, support a cell density?dependent ??secretase and furin mediated proteolysis of ??dystroglycan, which could be notch stimulated, leading to nuclear targeting and subsequent degradation. 117: 2149?2157, 2016. ? 2016 The Authors. Journal of Cellular Biochemistry Published by Wiley Periodicals, Inc.

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