PMID- 33626512 OWN - NLM STAT- MEDLINE DCOM- 20210726 LR - 20240226 IS - 1945-4589 (Electronic) IS - 1945-4589 (Linking) VI - 13 IP - 5 DP - 2021 Feb 24 TI - Nicotine exacerbates atherosclerosis through a macrophage-mediated endothelial injury pathway. PG - 7627-7643 LID - 10.18632/aging.202660 [doi] AB - Evidence suggests that nicotine intake promotes atherosclerosis. We enrolled 100 patients with coronary heart disease (CHD) and found that plaque burden, TXNIP expression, and inflammatory chemokine levels were higher in smokers than non-smokers. Additionally, patients with higher TXNIP expression in peripheral blood mononuclear cells (PBMCs) had a higher Gensini Scores and higher plasma IL-1beta and IL-18 levels. Treating bone marrow-derived macrophages (BMDMs) with nicotine in vitro led to enhanced lipid phagocytosis, chemotaxis, and increased production of reactive oxygen species (ROS), which activated TXNIP/NLRP3 inflammasome signaling and promoted pyroptosis, as evidenced by caspase-1 cleavage and increased production of IL-1beta, IL-18, and gasdermin D. Nicotine intake by ApoE((-/-)) mice fed a high-fat diet recapitulated those phenotypes. The effects of nicotine on pyroptotic signaling were reversed by N-acetyl-cysteine, a ROS scavenger. Silencing TXNIP in vivo reversed the effects of nicotine on macrophage invasion and vascular injury. Nicotine also induced pyroptotic macrophages that contributed to the apoptotic death of endothelial cells. These findings suggest that nicotine accelerates atherosclerosis in part by promoting macrophage pyroptosis and endothelial damage. Therefore, targeting the TXNIP/NLRP3-mediated pyroptotic pathway in macrophages may ameliorate nicotine-induced endothelial damage. FAU - Mao, ChengYu AU - Mao C AD - Department of Cardiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, People's Republic of China. FAU - Li, DongJiu AU - Li D AD - Department of Cardiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, People's Republic of China. FAU - Zhou, En AU - Zhou E AD - Department of Cardiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, People's Republic of China. FAU - Zhang, JunFeng AU - Zhang J AD - Department of Cardiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, People's Republic of China. FAU - Wang, ChangQian AU - Wang C AD - Department of Cardiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, People's Republic of China. FAU - Xue, Chao AU - Xue C AD - Department of Cardiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, People's Republic of China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210224 PL - United States TA - Aging (Albany NY) JT - Aging JID - 101508617 RN - 0 (Carrier Proteins) RN - 0 (GSDMD protein, human) RN - 0 (Ganglionic Stimulants) RN - 0 (Inflammasomes) RN - 0 (Interleukin-18) RN - 0 (Interleukin-1beta) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (NLRP3 protein, human) RN - 0 (Phosphate-Binding Proteins) RN - 0 (Reactive Oxygen Species) RN - 0 (TXNIP protein, human) RN - 6M3C89ZY6R (Nicotine) SB - IM MH - Animals MH - Carrier Proteins/*metabolism MH - Chemotaxis MH - Coronary Artery Disease/*metabolism MH - Female MH - Ganglionic Stimulants/pharmacology MH - Humans MH - Inflammasomes/metabolism MH - Interleukin-18/blood MH - Interleukin-1beta/blood MH - Intracellular Signaling Peptides and Proteins/metabolism MH - Macrophages/*drug effects MH - Male MH - Mice, Knockout MH - Middle Aged MH - NLR Family, Pyrin Domain-Containing 3 Protein/genetics/metabolism MH - Nicotine/*pharmacology MH - Phagocytosis MH - Phosphate-Binding Proteins/metabolism MH - Pyroptosis/drug effects MH - Reactive Oxygen Species/metabolism MH - Severity of Illness Index MH - Signal Transduction/drug effects MH - Mice PMC - PMC7993665 OTO - NOTNLM OT - endothelial injury OT - inflammasome OT - macrophages OT - nicotine OT - reactive oxygen species COIS- CONFLICTS OF INTEREST: The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported in this paper. EDAT- 2021/02/25 06:00 MHDA- 2021/07/27 06:00 PMCR- 2021/03/15 CRDT- 2021/02/24 20:09 PHST- 2020/10/21 00:00 [received] PHST- 2021/01/14 00:00 [accepted] PHST- 2021/02/25 06:00 [pubmed] PHST- 2021/07/27 06:00 [medline] PHST- 2021/02/24 20:09 [entrez] PHST- 2021/03/15 00:00 [pmc-release] AID - 202660 [pii] AID - 10.18632/aging.202660 [doi] PST - ppublish SO - Aging (Albany NY). 2021 Feb 24;13(5):7627-7643. doi: 10.18632/aging.202660. Epub 2021 Feb 24.