PMID- 32325260 OWN - NLM STAT- MEDLINE DCOM- 20210623 LR - 20220531 IS - 1879-1484 (Electronic) IS - 0021-9150 (Linking) VI - 301 DP - 2020 May TI - TRPA1 regulates macrophages phenotype plasticity and atherosclerosis progression. PG - 44-53 LID - S0021-9150(20)30199-4 [pii] LID - 10.1016/j.atherosclerosis.2020.04.004 [doi] AB - BACKGROUND AND AIMS: TRPA1 is a calcium permeable non-selective cation channel, its expression is up-regulated in atherosclerosis plaque, yet its function in macrophages activation is unknown. We sought to establish the role of TRPA1 in inflammatory macrophages activation. METHODS: TRPA1(-/-)ApoE(-/-) mice and C57BL/6 J control were treated with a high-fat diet (HFD) and the TRPA1 agonist cinnamaldehyde (CIN). Third-order branches of superior aorta of patients and mice were collected. Oil Red O staining and hematoxylin and eosin staining were performed to measure atherosclerotic lesions. The RNA-seq was performed to identify TRPA1 function in atherosclerosis. The expression of bone marrow-derived macrophages (BMDMs) markers was tested by Western blot. In addition, the levels of inflammatory factors were checked by ELISA. Chromatin immunoprecipitation (ChIP)-PCR and luciferase reporter gene assays were used to explore if TRPA1 could regulate histone modifications. RESULTS: TRPA1(-/-)ApoE(-/-) mice showed a significant increase in atherosclerosis plaques compared to ApoE(-/-) mice after HFD treatment. Conversely, activation of TRPA1 by CIN sharply reduced atherosclerosis progression. Atherosclerosis was associated with a significant change in macrophage polarization toward the M1 proinflammatory phenotype. We found that inhibition of TRPA1 remarkably stimulated M1 marker genes expression, while repressed M2 marker genes expression. The interaction between TRPA1 and Ezh2, a subunit of polycomb repressive complex 2, suppressed the proteasome-dependent degradation of Ezh2. Thus, TRPA1 epigenetically regulated H3K27 trimethylation level in macrophages. CONCLUSIONS: Our results demonstrate that TRPA1, up-regulated in atherosclerosis plaque, could regulate the macrophages toward an inflammatory phenotype, thereby modulating atherosclerosis progression. Activation of TRPA1 might serve as an atherosclerosis therapeutic target. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Wang, Qiang AU - Wang Q AD - Department of Cardiology, The General Hospital of Western Theater Command, PR China. FAU - Chen, Ken AU - Chen K AD - Department of Cardiology, The General Hospital of Western Theater Command, PR China. FAU - Zhang, Fan AU - Zhang F AD - Department of Nephrology, The General Hospital of Western Theater Command, Chengdu, Sichuan, 610083, PR China. FAU - Peng, Ke AU - Peng K AD - Department of Cardiology, The General Hospital of Western Theater Command, PR China. FAU - Wang, Zhen AU - Wang Z AD - Department of Cardiology, The General Hospital of Western Theater Command, PR China. FAU - Yang, Dachun AU - Yang D AD - Department of Cardiology, The General Hospital of Western Theater Command, PR China. Electronic address: yangdc71@126.com. FAU - Yang, Yongjian AU - Yang Y AD - Department of Cardiology, The General Hospital of Western Theater Command, PR China. Electronic address: yangyongjian38@sina.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200413 PL - Ireland TA - Atherosclerosis JT - Atherosclerosis JID - 0242543 RN - 0 (Apolipoproteins E) RN - 0 (TRPA1 Cation Channel) RN - 0 (TRPA1 protein, human) RN - 0 (Trpa1 protein, mouse) SB - IM MH - Animals MH - Apolipoproteins E/genetics MH - *Atherosclerosis/genetics MH - Disease Models, Animal MH - Humans MH - Macrophages/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Phenotype MH - *Plaque, Atherosclerotic MH - TRPA1 Cation Channel/genetics OTO - NOTNLM OT - Atherosclerosis OT - Inflammation OT - Macrophages OT - TRPA1 COIS- Declaration of competing interest The authors declared they do not have anything to disclose regarding conflict of interest with respect to this manuscript. EDAT- 2020/04/24 06:00 MHDA- 2021/06/24 06:00 CRDT- 2020/04/24 06:00 PHST- 2019/07/01 00:00 [received] PHST- 2020/03/23 00:00 [revised] PHST- 2020/04/02 00:00 [accepted] PHST- 2020/04/24 06:00 [pubmed] PHST- 2021/06/24 06:00 [medline] PHST- 2020/04/24 06:00 [entrez] AID - S0021-9150(20)30199-4 [pii] AID - 10.1016/j.atherosclerosis.2020.04.004 [doi] PST - ppublish SO - Atherosclerosis. 2020 May;301:44-53. doi: 10.1016/j.atherosclerosis.2020.04.004. Epub 2020 Apr 13.