in psoriasis pathogenesis. MAPK phosphatase-1 (MKP-1) is an important negative regulator
of MAPK activity, but the cellular and molecular mechanisms of MKP-1 in psoriasis
development are largely unknown. In this study, we found that the expression of MKP-1 was
decreased in the imiquimod (IMQ)-induced psoriasiform mouse skin. MKP-1-deficient (MKP-
1−/−) mice were highly susceptible to IMQ-induced skin inflammation, which was associated …