PMID- 31634459 OWN - NLM STAT- MEDLINE DCOM- 20200422 LR - 20221207 IS - 1879-0712 (Electronic) IS - 0014-2999 (Linking) VI - 865 DP - 2019 Dec 15 TI - Matrine pre-treatment suppresses AGEs- induced HCSMCs fibrotic responses by regulating Poldip2/mTOR pathway. PG - 172746 LID - S0014-2999(19)30698-3 [pii] LID - 10.1016/j.ejphar.2019.172746 [doi] AB - The fibrotic response of vascular smooth muscle cells (VSMCs) takes responsibilities in atherosclerosis. Advanced glycation end products (AGEs) induce and promote the fibrotic responses of VSMCs. Matrine shows potent anti-fibrotic and cardio-protective effects. This study was aimed to investigate the underlying mechanisms of matrine's inhibitory effects on AGEs-induced VSMCs fibrotic responses. Cultured human coronary smooth muscle cells (HCSMCs) were pre-treated with matrine and exposed to AGEs. Specific siRNA was used to silence polymerase delta interacting protein 2 (Poldip2) expression. Sircol collagen assay was used to assess collagen content. Protein expression and phosphorylation levels were determined by Western blotting. Matrine pre-treatment significantly reduced collagen content, increased smooth muscle myosin heavy chain 11 (MYH11) and Poldip2 expression, decreased expressions of collagen I, beta1-integrin, phsphoinositide-3-kinase (PI3K) and nuclear phosphorylated p70S6k, and reduced phosphorylation levels of protein kinase B (Akt) and mechanistic target of rapamycin (mTOR) in HCSMCs exposed to AGEs in a concentration dependent manner. Specific siRNA effectively silenced Poldip2 expression and impaired matrine's effect on collagen content, expressions of MYH11, collagen I, beta1-integrin, PI3K, nuclear p-p70S6k and phosphorylation levels of Akt and mTOR in HCSMCs exposed to AGEs. Matrine suppresses AGEs- induced fibrotic responses in HCSMCs via regulating Poldip2/mTOR signaling pathway. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Ma, Wangxia AU - Ma W AD - Department of Cardiology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China; Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, China; Department of Cardiology, Zhouzhi County People's Hospital, Xi'an, Shaanxi Province, China. FAU - Xu, Jing AU - Xu J AD - Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, China. FAU - Zhang, Yong AU - Zhang Y AD - Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, China. FAU - Zhang, Hong AU - Zhang H AD - Department of Cardiology, The First Affiliated Hospital of Baotou Medical College, Baotou, the Nei Monggol Autonomous Region, China. FAU - Zhang, Zhu AU - Zhang Z AD - Department of Cardiology, The First Affiliated Hospital of Baotou Medical College, Baotou, the Nei Monggol Autonomous Region, China. FAU - Zhou, Liqin AU - Zhou L AD - Department of Cardiology, The First Affiliated Hospital of Baotou Medical College, Baotou, the Nei Monggol Autonomous Region, China. FAU - Wang, Xincheng AU - Wang X AD - Department of Cardiology, Zhouzhi County People's Hospital, Xi'an, Shaanxi Province, China. FAU - Liu, Hongbo AU - Liu H AD - Department of Cardiology, Zhouzhi County People's Hospital, Xi'an, Shaanxi Province, China. FAU - Chen, Yani AU - Chen Y AD - Department of Cardiology, Zhouzhi County People's Hospital, Xi'an, Shaanxi Province, China. FAU - Du, Peng AU - Du P AD - Department of Cardiology, Zhouzhi County People's Hospital, Xi'an, Shaanxi Province, China. FAU - Min, Ningbin AU - Min N AD - Department of Cardiology, Heyang County People's Hospital, Weinan, Shaanxi Province, China. Electronic address: qiangzhui304@163.com. FAU - Liu, Zhongwei AU - Liu Z AD - Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, China. Electronic address: liuzhongwei@xjtu.edu.cn. FAU - Yin, Yanrong AU - Yin Y AD - Department of Cardiology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China. Electronic address: yronger@163.com. LA - eng PT - Journal Article DEP - 20191018 PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Alkaloids) RN - 0 (Glycation End Products, Advanced) RN - 0 (Nuclear Proteins) RN - 0 (POLDIP2 protein, human) RN - 0 (Quinolizines) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - 0 (Matrines) SB - IM MH - Alkaloids/*pharmacology MH - Coronary Vessels/*pathology MH - Fibrosis MH - Glycation End Products, Advanced/antagonists & inhibitors/*pharmacology MH - Humans MH - Myocytes, Smooth Muscle/*drug effects/metabolism/*pathology MH - Nuclear Proteins/*metabolism MH - Quinolizines/*pharmacology MH - Signal Transduction/drug effects MH - TOR Serine-Threonine Kinases/*metabolism MH - Matrines OTO - NOTNLM OT - Advanced glycation end products OT - Fibrosis OT - Matrine OT - Poldip2 OT - Vascular smooth muscle cells OT - mTOR signaling pathway EDAT- 2019/10/22 06:00 MHDA- 2020/04/23 06:00 CRDT- 2019/10/22 06:00 PHST- 2019/08/27 00:00 [received] PHST- 2019/10/15 00:00 [revised] PHST- 2019/10/17 00:00 [accepted] PHST- 2019/10/22 06:00 [pubmed] PHST- 2020/04/23 06:00 [medline] PHST- 2019/10/22 06:00 [entrez] AID - S0014-2999(19)30698-3 [pii] AID - 10.1016/j.ejphar.2019.172746 [doi] PST - ppublish SO - Eur J Pharmacol. 2019 Dec 15;865:172746. doi: 10.1016/j.ejphar.2019.172746. Epub 2019 Oct 18.