alexa Silk sericin protein of tropical tasar silkworm inhibits UVB-induced apoptosis in human skin keratinocytes.
Engineering

Engineering

Journal of Textile Science & Engineering

Author(s): Dash R, Mandal M, Ghosh SK, Kundu SC, Dash R, Mandal M, Ghosh SK, Kundu SC

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Abstract The silk protein sericin has been identified as a potent antioxidant and photoprotective agent against ultraviolet B (UVB) irradiation in mouse skin model. In this study, we have investigated the anti-apoptotic effect of sericin in UVB (30 mJ/cm2)-irradiated human keratinocytes. Flow cytometry analysis has shown that pre-treatment with sericin inhibits UVB-induced apoptosis. The pre-treatment with sericin suppresses bax expression, up-regulates the expression of bcl-2, prevents both the activation of caspase-3 and cleavage of Poly (ADP-ribose) polymerase. Generation of intracellular hydrogen peroxide in UVB-treated keratinocytes is inhibited through pre-treatment with sericin suggesting that sericin probably prevents mitochondrial damage. This article was published in Mol Cell Biochem and referenced in Journal of Textile Science & Engineering

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