Emerging evidence suggests an important role for human epidermal keratinocytes (KC) in innate immune mechanisms against skin infections. A crucial part in this first-line immune defence is performed by the ‘‘pattern recognition receptors,’’ amongst which the group of Toll-like receptors (TLRs) has evolved as the most essential contributor. In this study, functional TLR expression in KC was analysed in detail. It is demonstrated that KC express all known dsRNA sensing receptors at a constitutive and inducible level. Thus, in addition to building a physical barrier against infection, KC are specially equipped with a full antiviral defense program which enables them to efficiently target viral infections of the skin.
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Emerging evidence suggests an important role for human epidermal keratinocytes (KC) in innate immune mechanisms against skin infections. A crucial part in this first-line immune defence is performed by the ‘‘pattern recognition receptors,’’ amongst which the group of Toll-like receptors (TLRs) has evolved as the most essential contributor. In this study, functional TLR expression in KC was analysed in detail. It is demonstrated that KC express all known dsRNA sensing receptors at a constitutive...
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