| DUOX Enzyme Activity Promotes AKT Signalling in Prostate Cancer Cells. | |
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MedLine Citation:
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PMID: 23225414 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Reactive oxygen species (ROS) and oxidative stress are related to tumour progression, and high levels of ROS have been observed in prostate tumours compared to normal prostate. ROS can positively influence AKT signalling and thereby promote cell survival. The aim of this project was to establish whether the ROS generated in prostate cancer cells positively regulate AKT signalling and enable resistance to apoptotic stimuli. In PC3 cells, dual oxidase (DUOX) enzymes actively generate ROS, which inactivate phosphatases, thereby maintaining AKT phosphorylation. Inhibition of DUOX by diphenylene iodium (DPI), intracellular calcium chelation and small-interfering RNA (siRNA) resulted in lower ROS levels, lower AKT and glycogen synthase kinase 3β (GSK3β) phosphorylation, as well as reduced cell viability and increased susceptibility to apoptosis stimulating fragment (FAS) induced apoptosis. This report shows that ROS levels in PC3 cells are constitutively maintained by DUOX enzymes, and these ROS positively regulate AKT signalling through inactivating phosphatases, leading to increased resistance to apoptosis. |
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Authors:
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Christopher A Pettigrew; John S Clerkin; Thomas G Cotter |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Anticancer research Volume: 32 ISSN: 1791-7530 ISO Abbreviation: Anticancer Res. Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-12-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8102988 Medline TA: Anticancer Res Country: Greece |
Other Details:
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Languages: eng Pagination: 5175-81 Citation Subset: IM |
Affiliation:
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Tumour Biology Laboratory, BioSciences Institute, University College Cork, College Road, Cork, Ireland. t.cotter@ucc.ie. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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