Abstract
The outermost layer of our skin functions as a barrier to protect us from physical, chemical, and biological environmental insults. This protective function is mediated by the epidermal cornified cell envelope (CE) which serves both as a mechanical and permeability barrier. Recently we have discovered that the CE constitutes also a first-line antioxidant shield which relies greatly on cysteine residues in CE precursor proteins. Here we describe methods and protocols to study the cysteine-mediated antioxidant function of the CE at the level of the whole organ (the skin), individual cells (keratinocytes), or isolated proteins (SPRR family).
An erratum to this chapter can be found at http://dx.doi.org/10.1007/7651_2013_66
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Acknowledgements
The authors would like to thank all present and former members of the Molecular Cell Signaling group at Molecular Genetics (Leiden Institute of Chemistry), who have contributed to the establishment and testing of the protocols described here, and all current members of the Aging group at Genetics (ErasmusMC, Rotterdam). Bobby Florea (Biosyn, LIC) is acknowledged for his help with the mass spectrometer.
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Vermeij, W.P., Backendorf, C. (2013). Reactive Oxygen Species (ROS) Protection via Cysteine Oxidation in the Epidermal Cornified Cell Envelope. In: Turksen, K. (eds) Epidermal Cells. Methods in Molecular Biology, vol 1195. Springer, New York, NY. https://doi.org/10.1007/7651_2013_51
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DOI: https://doi.org/10.1007/7651_2013_51
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