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- W2131065556 abstract "Regulation of the balance of matrix metalloproteinase-2 (MMP-2) and its tissue inhibitor (TIMP-2) by thioredoxin (Trx) was investigated in human dermal fibroblasts. Expression and secretion of Trx and Trx reductase 1 (TR1) was increased after ultraviolet (UV) A irradiation. A significant increase in proMMP-2 activity and a decrease of TIMP-2 activity in supernatants of UVA-irradiated fibroblasts were observed in gelatin and reverse zymography compared to non-irradiated fibroblasts. Removal of Trx or TR1 by immunoprecipitation diminished these changes in proMMP-2 activity. Incubation with 5,5′-dithio-bis-2-nitrobenzoic acid (DTNB) also suppressed these changes. Incubation with recombinant Trx or TR decreased TIMP-2 activity and increased MMP-2 activity. UVA-irradiated fibroblasts, transiently transfected with a dominant-negative mutant or wild-type Trx, showed down- or upregulation of proMMP-2 activities, respectively, without significant change of protein amount. In conclusion, thioredoxin secreted by UVA irradiation is involved in the regulation of MMP-2 and TIMP-2 activities through its redox activity in human dermal fibroblasts." @default.
- W2131065556 created "2016-06-24" @default.
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- W2131065556 date "2004-03-01" @default.
- W2131065556 modified "2023-09-26" @default.
- W2131065556 title "Thioredoxin secreted upon ultraviolet A irradiation modulates activities of matrix metalloproteinase-2 and tissue inhibitor of metalloproteinase-2 in human dermal fibroblasts" @default.
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- W2131065556 doi "https://doi.org/10.1016/j.abb.2003.12.026" @default.
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