Isoprenylcysteine carboxyl methyltransferase inhibitors exerts anti-inflammatory activity.

Isoprenylcysteine carboxyl methyltransferase inhibitors exerts anti-inflammatory activity. Biochem Pharmacol. 2020 Sep 12;:114219 Authors: Seok Yang W, Gyung Kim H, Lee Y, Yoon K, Kim S, Hye Kim J, Youl Cho J Abstract Isoprenylcysteine carboxylmethyltransferase (ICMT) has been reported to regulate the inflammatory response through the Ras/MAPK/AP-1 pathway. Nevertheless, the potential of ICMT inhibitors as therapeutic agents against inflammatory diseases has not been examined. Therefore, in this study, we investigated the anti-inflammatory properties of two ICMT inhibitors, cysmethynil (CyM) and 3-methoxy-N-[2-2,2,6,6-tetramethyl-4-phenyltetrahydropyran-4-yl)ethyl]aniline (MTPA), using in vitro analyses and in vivo analyses (lipopolysaccharide (LPS)/D-GalN-triggered hepatitis and DSS-induced colitis mouse models). CyM and MTPA inhibited the production of nitric oxide (NO) and prostaglandin E (PGE)2 and the expression of cyclooxygenase (COX)-2, tumor necrosis factor (TNF)-α and interleukin (IL)-1β in LPS-induced RAW264.7 cells and peritoneal macrophages without cytotoxicity. CyM also reduced AP-1-mediated luciferase activity in LPS-stimulated RAW264.7 cells and MyD88- and TRIF-expressing HEK293 cells. In addition, CyM and MTPA suppressed the translocation of Ras to the cell membrane and ER as well as phosphorylation of Ras-dependent AP-1 signaling molecules including Raf, MEK1/2, ERK p38, and JNK. Consistent with these results, CyM ...
Source: Biochemical Pharmacology - Category: Drugs & Pharmacology Authors: Tags: Biochem Pharmacol Source Type: research