PMID- 31010320 OWN - NLM STAT- MEDLINE DCOM- 20190801 LR - 20190801 IS - 2169-141X (Electronic) IS - 2169-1401 (Linking) VI - 47 IP - 1 DP - 2019 Dec TI - Antagonism of NK-1R using aprepitant suppresses inflammatory response in rheumatoid arthritis fibroblast-like synoviocytes. PG - 1628-1634 LID - 10.1080/21691401.2019.1573177 [doi] AB - Chronic inflammation in fibroblast-like synoviocytes (FLSs) induced by pro-inflammatory cytokines such as TNF-alpha plays a key role in the pathogenesis of rheumatoid arthritis (RA). The neurokinin-1 receptor (NK-1R) is one of the G protein-coupled receptors (GPCRs) mediating the intracellular signalling of substance P (SP). However, the possible implications of NK-1R in rheumatoid arthritis fibroblast-like synoviocytes (RA-FLSs) and the pathogenesis of RA have not yet been reported. In the current study, we report that NK-1R is expressed in FLSs. Importantly, NK-1R expression was found to be significantly increased in RA-FLSs compared to normal FLSs. Interestingly, we found that treatment with tumour necrosis factor (TNF)-alpha increased the expression of NK-1R at both the gene and protein levels. Treatment with the NK-1R antagonist aprepitant reduced TNF-alpha-induced expression of NADPH oxidase 4 (NOX-4) and generation of reactive oxygen species (ROS) in FLSs. Our results also display that blockage of NF-1R using aprepitant inhibited TNF-alpha-induced expression and secretion of proinflammatory cytokines, including interleukin-1beta (IL-1beta), IL-6, and IL-8. Consistently, aprepitant prevented TNF-alpha-induced expression of matrix metalloproteinases (MMPs), including matrix metalloproteinase-3 (MMP-3) and matrix metalloproteinase-13 (MMP-13). Mechanistically, our data demonstrate that treatment with aprepitant inhibited TNF-alpha-induced phosphorylation and degradation of inhibitor of NF-kappaB (IkappaBalpha). Notably, aprepitant attenuated TNF-alpha-induced nuclear translocation of nuclear factor kappaB (NF-kappaB) p65 and reduced luciferase activity of NF-kappaB in FLSs. The findings implicated a novel function of NK-1R in RA-FLSs. Blockage of NK-1R using its specific antagonist aprepitant might provide a new therapeutic strategy for RA. FAU - Liu, Xiaoping AU - Liu X AD - a Department of Rheumatology , Dongfang Hospital of Beijing University of Chinese Medicine , Beijing , China. FAU - Zhu, Yuelan AU - Zhu Y AD - a Department of Rheumatology , Dongfang Hospital of Beijing University of Chinese Medicine , Beijing , China. FAU - Zheng, Wei AU - Zheng W AD - b Internal medicine of TCM , Beijing University of Chinese Medicine , Beijing , China. FAU - Qian, Tangliang AU - Qian T AD - b Internal medicine of TCM , Beijing University of Chinese Medicine , Beijing , China. FAU - Wang, Haiyu AU - Wang H AD - b Internal medicine of TCM , Beijing University of Chinese Medicine , Beijing , China. FAU - Hou, Xiujuan AU - Hou X AD - a Department of Rheumatology , Dongfang Hospital of Beijing University of Chinese Medicine , Beijing , China. LA - eng PT - Journal Article PL - England TA - Artif Cells Nanomed Biotechnol JT - Artificial cells, nanomedicine, and biotechnology JID - 101594777 RN - 0 (NF-kappa B) RN - 0 (Neurokinin-1 Receptor Antagonists) RN - 0 (Receptors, Neurokinin-1) RN - 0 (Tumor Necrosis Factor-alpha) RN - 139874-52-5 (NF-KappaB Inhibitor alpha) RN - 1NF15YR6UY (Aprepitant) RN - EC 3.4.24.- (Matrix Metalloproteinase 13) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) MH - Aprepitant/*pharmacology/therapeutic use MH - Arthritis, Rheumatoid/drug therapy/genetics/*metabolism/*pathology MH - Fibroblasts/*pathology MH - Gene Expression Regulation/drug effects MH - Humans MH - Inflammation/drug therapy MH - Matrix Metalloproteinase 13/metabolism MH - Matrix Metalloproteinase 3/metabolism MH - NF-KappaB Inhibitor alpha/metabolism MH - NF-kappa B/metabolism MH - Neurokinin-1 Receptor Antagonists/*pharmacology/therapeutic use MH - Oxidative Stress/drug effects MH - Receptors, Neurokinin-1/genetics/*metabolism MH - Signal Transduction/drug effects MH - Synoviocytes/*drug effects/metabolism/pathology MH - Tumor Necrosis Factor-alpha/metabolism OTO - NOTNLM OT - NF-kappaB OT - NK-1R OT - Rheumatoid arthritis OT - TNF-alpha OT - aprepitant OT - matrix metalloproteinases EDAT- 2019/04/24 06:00 MHDA- 2019/08/02 06:00 CRDT- 2019/04/24 06:00 PHST- 2019/04/24 06:00 [entrez] PHST- 2019/04/24 06:00 [pubmed] PHST- 2019/08/02 06:00 [medline] AID - 10.1080/21691401.2019.1573177 [doi] PST - ppublish SO - Artif Cells Nanomed Biotechnol. 2019 Dec;47(1):1628-1634. doi: 10.1080/21691401.2019.1573177.