Journal
EXPERIMENTAL DERMATOLOGY
Volume 22, Issue 3, Pages 226-228Publisher
WILEY-BLACKWELL
DOI: 10.1111/exd.12100
Keywords
immune suppression; inflammation; Mc1r; UV
Categories
Funding
- NIH [RO1CA53765]
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The G-protein-coupled receptor, Mc1r, plays a major role in pigment production and has been reported to be important in the inflammatory response. We have investigated the effect of deficiency in Mc1r on UV-induced inflammation. Mice on the same genetic background were used - C57BL/6-c (albino), C57BL/6 (black), C57BL/6-Mc1r(e/e) deficient (yellow). FACS analysis of disaggregated skin showed a similar dose-dependent increase in Ly6G(+) and CD11b(+) cells in response to UV radiation in all groups. No differences in UV-induced edema or in DNA damage were detected between groups. The contact hypersensitivity response, neonatal immune tolerance and UV immunosuppression were all similar in C57BL/6 and C57BL/6-Mc1r(e/e) mice. We conclude that the absence of Mc1r does not impair the inflammatory response to UV radiation or the generation of immunosuppression.
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