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- W971487047 abstract "Epiretinal membrane (ERM) contraction is associated with a variety of ocular diseases that cause macular dysfunction. Trans-differentiated Müller cells have been identified in ERMs, and have been implicated to be involved in the contractile process. In this study, we tested the effect of dasatinib, an FDA-approved tyrosine kinase inhibitor, on matrix contraction caused by Müller cells, and examined molecular mechanism of action. Type I collagen matrix contraction assays were used to examine the effect of drugs on matrix contraction by trans-differentiated Müller cells. Fluophore-conjugated phalloidin was used for the detection of actin cytoskeleton, and Western-blot analyses were carried out to examine protein expression and phosphorylation status. Dasatinib inhibited collagen matrix contraction by trans-differentiated Müller cells that was associated with decreased cell spreading and reduction of actomyosin stress fibers. Concomitantly, dasatinib-treated Müller cells had reduced phosphorylation of Src family kinase, paxillin, as well as myosin II light chain. Specific inhibitors of Rho/ROCK and myosin II confirmed the critical role played by this pathway in Müller cell contraction. Our data demonstrate that dasatinib significantly reduced matrix contraction by Müller cells via inhibition of focal adhesion, as well as actomyosin contraction." @default.
- W971487047 created "2016-06-24" @default.
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- W971487047 date "2015-10-01" @default.
- W971487047 modified "2023-09-24" @default.
- W971487047 title "Dasatinib affects focal adhesion and myosin regulation to inhibit matrix contraction by Müller cells" @default.
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- W971487047 doi "https://doi.org/10.1016/j.exer.2015.07.019" @default.
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