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Keratinocytes are central to the barrier functions of surface epithelia, such as the gingiva and epidermis. RIPK4 is a key regulator of keratinocyte differentiation; however, the signalling pathways in which it functions remain poorly defined. In this study, we identified a regulatory relationship between RIPK4 and ELF3, an ETS family transcription factor. RIPK4 was shown to be important for the upregulation...
Keratinocytes of the oral mucosa and epidermis play key roles in host defense. In addition to functioning as a physical barrier, they also produce cytokines to elicit inflammation in response to infection or injury. We recently established that receptor-interacting protein kinase 4 (RIPK4) and interferon regulatory factor 6 (IRF6) function as a cell-intrinsic signaling axis to regulate keratinocyte...
IRF6 and RIPK4 are critical regulators of keratinocyte differentiation and their mutation cause the developmental syndromes Van der Woude syndrome (VWS) and Bartsocas-Papas syndrome (BPS), respectively. RIPK4 promotes keratinocyte differentiation, in part, by inducing IRF6 transactivator function through the phosphorylation of its C-terminal domain at Ser413 and Ser424. Although more than 200 IRF6...
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