PMID- 35485167 OWN - NLM STAT- MEDLINE DCOM- 20220502 LR - 20220716 IS - 2165-5987 (Electronic) IS - 2165-5979 (Print) IS - 2165-5979 (Linking) VI - 13 IP - 4 DP - 2022 Apr TI - MEK1/2 inhibitor inhibits neointima formation by activating miR-126-3p/ C-X-C motif chemokine ligand 12 (CXCL12)/C-X-C motif chemokine receptor 4 (CXCR4) axis. PG - 11214-11227 LID - 10.1080/21655979.2022.2063496 [doi] AB - Endothelial dysfunction is an initial and essential step in vascular-remodeling diseases, including atherosclerosis and neointima formation. During vascular remodeling, activated endothelial cells can release pro-inflammatory factors that promote phenotypic switching of vascular smooth muscle cells (VSMCs) to the proliferative phenotype. We previously reported that MEK1/2 inhibitor, U0126, has a protective effect on the development of atherosclerosis and vascular calcification. However, the effect of MEK1/2 inhibitors on neointimal formation and the underlying mechanism is not fully understood. We determined that MEK1/2 inhibitor reduced carotid artery ligation-induced neointimal formation, while increased collagen and elastin levels and vascular integrality. Mechanistically, MEK1/2 inhibitor or ERK1/2 siRNA increased miR-126-3p level in endothelial cells, thereby inhibiting expression of regular of G-protein signaling 16 (RGS16), a miR-126-3p target gene, to activate the C-X-C motif chemokine ligand 12 (CXCL12)/C-X-C motif chemokine receptor 4 (CXCR4) signaling pathway. Accordingly, miR-126-3p was also increased by U0126 in serum and carotid artery. RGS16 was inhibited while CXCR4 and CXCL12 was increased by U0126 in neointimal areas, especially in the endothelium. Moreover, similar results were observed in atherosclerotic plaques of high-fat diet-fed apolipoprotein E deficiency (apoE(-/-)) mice. In addition, vascular cell adhesion molecule 1 (VCAM-1), another miR-126-3p target gene, was reduced by U0126 in the neointimal areas, resulting reduced monocytes/macrophages accumulation. Taken together, our results indicate that MEK1/2 inhibitor can reduce neointima formation by activating endothelial miR-126-3p production to facilitate endothelium repair while reduce monocyte adhesion/infiltration. FAU - Yan, Yali AU - Yan Y AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. FAU - Zhu, Mengmeng AU - Zhu M AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. FAU - Ma, Jialing AU - Ma J AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. FAU - He, Xiaoyu AU - He X AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. FAU - Yang, Xiaoxiao AU - Yang X AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. FAU - Xu, Hongmei AU - Xu H AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. FAU - Jiang, Meixiu AU - Jiang M AD - The Institute of Translational Medicine, the National Engineering Research Center for Bioengineering Drugs and the Technologies, Nanchang University, Nanchang, Jiangxi, China. FAU - Zhang, Shuang AU - Zhang S AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. FAU - Duan, Yajun AU - Duan Y AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. FAU - Han, Jihong AU - Han J AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. AD - College of Life Sciences, Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Nankai University, Tianjin, Hebei, China. FAU - Chen, Yuanli AU - Chen Y AUID- ORCID: 0000-0003-0813-3847 AD - Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, China. LA - eng PT - Journal Article PL - United States TA - Bioengineered JT - Bioengineered JID - 101581063 RN - 0 (CXCR4 protein, mouse) RN - 0 (Chemokine CXCL12) RN - 0 (Cxcl12 protein, mouse) RN - 0 (Ligands) RN - 0 (MicroRNAs) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Receptors, CXCR4) RN - EC 2.7.12.2 (Mitogen-Activated Protein Kinase Kinases) SB - IM MH - Animals MH - *Atherosclerosis/genetics MH - Chemokine CXCL12/metabolism MH - Endothelial Cells/metabolism MH - Ligands MH - Mice MH - *MicroRNAs/genetics/metabolism MH - Mitogen-Activated Protein Kinase Kinases/*antagonists & inhibitors MH - Neointima/genetics/metabolism MH - Protein Kinase Inhibitors/*pharmacology MH - Receptors, CXCR4/metabolism MH - Signal Transduction PMC - PMC9208476 OTO - NOTNLM OT - ERK1/2 OT - Neointima formation OT - RGS16 OT - endothelium repair OT - miR-126-3p COIS- No potential conflict of interest was reported by the author(s). EDAT- 2022/04/30 06:00 MHDA- 2022/05/03 06:00 PMCR- 2022/04/29 CRDT- 2022/04/29 04:22 PHST- 2022/04/29 04:22 [entrez] PHST- 2022/04/30 06:00 [pubmed] PHST- 2022/05/03 06:00 [medline] PHST- 2022/04/29 00:00 [pmc-release] AID - 2063496 [pii] AID - 10.1080/21655979.2022.2063496 [doi] PST - ppublish SO - Bioengineered. 2022 Apr;13(4):11214-11227. doi: 10.1080/21655979.2022.2063496.