TY - JOUR AB - TNF-α induces some proinflammatory cytokines including IL-1β, IL-6, IL-8, and itself by activation of NF-κB or MAPKs (p38, JNK, ERK). These cytokines play important roles in various inflammatory skin diseases, such as psoriasis. Recently it was also reported that expression of cyclin E is up-regulated by ERK pathway after TNF-α treatment. However, it was unknown whether curcumin, showing inhibitory effects on NF-κB and MAPKs, attenuates the expression of TNF-α-induced IL-1β, IL-6, IL-8, and TNF-α as well as cyclin E expression in HaCaT cells. In this study, we investigated the inhibitory effect of curcumin on expression of proinflammatory cytokines and cyclin E in TNF-α-treated HaCaT cells. We found that curcumin inhibited the expression of TNF-α-induced IL-1β, IL-6, and TNF-α, but not IL-8, in TNF-α-treated HaCaT cells as well as the TNF-α-induced cyclin E expression. In addition, curcumin inhibited the activation of MAPKs (JNK, p38 MAPK, and ERK) and NF-κB in TNF-α-treated HaCaT cells. Taken together, curcumin exerts anti-inflammatory and growth inhibitory effects in TNF-α-treated HaCaT cells through inhibition of NF-κB and MAPK pathways. AD - Department of Dermatology, School of Medicine, Keimyung University, Daegu 700-712, Korea null AU - Cho,Jae-We AU - Lee,Kyu-Suk AU - Kim,Chang-Wook DA - 2007/03/01 DO - 10.3892/ijmm.19.3.469 EP - 474 IS - 3 JO - Int J Mol Med PY - 2007 SN - 1107-3756 1791-244X SP - 469 ST - Curcumin attenuates the expression of IL-1β, IL-6, and TNF-α as well as cyclin E in TNF-α-treated HaCaT cells; NF-κB and MAPKs as potential upstream targets T2 - International Journal of Molecular Medicine TI - Curcumin attenuates the expression of IL-1β, IL-6, and TNF-α as well as cyclin E in TNF-α-treated HaCaT cells; NF-κB and MAPKs as potential upstream targets UR - https://doi.org/10.3892/ijmm.19.3.469 VL - 19 ER -