Abstract
We demonstrate that ablation of OTULIN, a deubiquitinase that specifically cleaves linear ubiquitin chains, selectively in keratinocytes, results in the appearance of inflammatory skin lesions that develop into verrucous carcinomas. Genetic ablation of TNFR1, knockin expression of kinase-inactive RIPK1 or keratinocyte-specific deletion of FADD and MLKL completely rescues mice with OTULIN deficiency from dermatitis and tumorigenesis, identifying keratinocyte cell death as the driving force for inflammation.
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