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- W2045119801 abstract "Hyperglycemia, key factor of the pre-diabetic and diabetic pathology, is associated with cellular oxidative stress that promotes oxidative protein modifications. We report that protein nitration is responsive to changes in glucose concentrations in islets of Langerhans and insulinoma beta cells. Alterations in the extent of tyrosine nitration as well as the cellular nitroproteome profile correlated tightly with changing glucose concentrations. The target proteins we identified function in protein folding, energy metabolism, antioxidant capacity, and membrane permeability. Nitration of heat shock protein 60 in vitro was found to decrease its ATP hydrolysis and interaction with proinsulin, suggesting a mechanism by which protein nitration could diminish insulin secretion. This was supported by our finding of a decrease in stimulated insulin secretion following glycolytic stress in cultured cells. Our results reveal that protein tyrosine nitration may be a previously unrecognized factor in beta-cell dysfunction and the pathogenesis of diabetes." @default.
- W2045119801 created "2016-06-24" @default.
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- W2045119801 creator A5068769791 @default.
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- W2045119801 date "2009-04-01" @default.
- W2045119801 modified "2023-10-13" @default.
- W2045119801 title "Glucose-modulated tyrosine nitration in beta cells: Targets and consequences" @default.
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- W2045119801 doi "https://doi.org/10.1016/j.abb.2009.01.021" @default.
- W2045119801 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2759311" @default.
- W2045119801 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19402213" @default.
- W2045119801 hasPublicationYear "2009" @default.
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