PMID- 35359716 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220402 IS - 1664-302X (Print) IS - 1664-302X (Electronic) IS - 1664-302X (Linking) VI - 13 DP - 2022 TI - Fusobacterium nucleatum Accelerates Atherosclerosis via Macrophage-Driven Aberrant Proinflammatory Response and Lipid Metabolism. PG - 798685 LID - 10.3389/fmicb.2022.798685 [doi] LID - 798685 AB - Periodontitis, an oral chronic inflammatory disease, is reported to show an association with atherosclerotic vascular disease. Fusobacterium nucleatum is an oral commensal bacterium that is abundantly implicated in various forms of periodontal diseases; however, its role in the pathogenesis of atherosclerosis is unclear. This study aimed to elucidate the underlying pathogenic mechanisms of atherosclerosis induced by F. nucleatum to provide new insight on the prevention and treatment of atherosclerosis. We used an animal model, that is, ApoE(-/-) mice were infected with F. nucleatum by oral gavage, and in vitro co-culture models to assess the pathogenicity of F. nucleatum. The results indicate that F. nucleatum ATCC 25586 invaded aortic tissues and substantially increased the progression of atherosclerotic lesions. In addition, F. nucleatum changed plaque composition into a less-stable phenotype, characterized with increased subcutaneous macrophage infiltration, M1 polarization, lipid deposition, cell apoptosis, and reduced extracellular matrix and collagen content. The serum levels of pro-atherosclerotic factors, such as interleukin (IL)-6, IL-1beta, tumor necrosis factor (TNF)-alpha, monocyte chemoattractant protein-1 (MCP-1), c-reactive protein, and oxidized low-density lipoprotein (ox-LDL) and microRNAs (miR-146a, miR-155, and miR-23b) were considerably increased after F. nucleatum stimulation, whereas HDL-c level was reduced. F. nucleatum induced in vitro macrophage apoptosis in a time- and dose-dependent manner. F. nucleatum facilitated ox-LDL-induced cholesterol phagocytosis and accumulation by regulating the expression of lipid metabolism-related genes (AR-A1, ACAT1, ABCA1, and ABCG1). F. nucleatum further worsened the atherosclerotic plaque microenvironment by considerably increasing the levels of IL-6; IL-1beta; TNF-alpha; MCP-1; and MMP-2, 8, and 9 and by suppressing fibronectin (FN) 1 levels during foam cell formation. This study shows that F. nucleatum ATCC 25586 is implicated in atherosclerosis by causing aberrant activation and lipid metabolism in macrophage. CI - Copyright (c) 2022 Zhou, Liu, Wu, Zhao and Wu. FAU - Zhou, Jieyu AU - Zhou J AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. AD - Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China. FAU - Liu, Lin AU - Liu L AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. AD - Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China. FAU - Wu, Peiyao AU - Wu P AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. AD - Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China. FAU - Zhao, Lei AU - Zhao L AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. AD - Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China. FAU - Wu, Yafei AU - Wu Y AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. AD - Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China. LA - eng PT - Journal Article DEP - 20220311 PL - Switzerland TA - Front Microbiol JT - Frontiers in microbiology JID - 101548977 PMC - PMC8963492 OTO - NOTNLM OT - F. nucleatum OT - atherosclerosis OT - inflammation OT - lipid metabolism OT - macrophage OT - microRNA OT - periodontitis OT - polarization COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/04/02 06:00 MHDA- 2022/04/02 06:01 PMCR- 2022/03/11 CRDT- 2022/04/01 05:12 PHST- 2021/10/20 00:00 [received] PHST- 2022/02/03 00:00 [accepted] PHST- 2022/04/01 05:12 [entrez] PHST- 2022/04/02 06:00 [pubmed] PHST- 2022/04/02 06:01 [medline] PHST- 2022/03/11 00:00 [pmc-release] AID - 10.3389/fmicb.2022.798685 [doi] PST - epublish SO - Front Microbiol. 2022 Mar 11;13:798685. doi: 10.3389/fmicb.2022.798685. eCollection 2022.