PMID- 37866313 OWN - NLM STAT- MEDLINE DCOM- 20231127 LR - 20231227 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 125 IP - Pt A DP - 2023 Dec TI - Depletion of beta-arrestin-1 in macrophages enhances atherosclerosis in ApoE(-/-) mice. PG - 111085 LID - S1567-5769(23)01411-X [pii] LID - 10.1016/j.intimp.2023.111085 [doi] AB - Autophagy in atherosclerotic plaque macrophage contributes to the alleviation of atherosclerosis through the promotion of lipid metabolism. beta-arrestins are multifunctional proteins participating various kinds of cellular signaling pathways. Here we aimed to determine the role of beta-arrestin-1, an important member of beta-arrestin family, in atherosclerosis, and whether autophagy was involved in this process. ApoE(-/-)beta-arrestin-1(fl/fl)LysM-Cre mice were created through bone marrow transplantation for the atherosclerosis model with conditional myeloid knocking out beta-arrestin-1. Bone marrow-derived macrophages (BMDMs) were used for the in vitro studies. Oil red O staining was used to detect the lesional area. F4/80, Masson trichrome and picro-Sirius red staining were applied for the determination of plaque stability. Real-time PCR was used for the detection of levels of lipid metabolism-related receptors. Electron microscopy and tandem fluorescent mRFP-GFP-LC3 plasmid was applied to test autophagy level. We found that beta-arrestin-1 was highly increased in expression in plaque macrophage on the occurrence of atherosclerosis. Conditional myeloid knocking out beta-arrestin-1 largely promotes plaque formation and vulnerability. In murine macrophage with lipid loading, knocking down beta-arrestin-1 enhanced foam cell formation and levels of plasma and cellular cholesterol, while overexpressing beta-arrestin-1 led to the opposite effects. The alleviative effects induced by macrophage beta-arrestin-1 in atherosclerosis were involved in autophagy, based on the reduction of autophagy level with the knocking down of macrophage beta-arrestin-1 and administration of autophagy inhibitors which largely attenuated the decreasing effect on foam cell formation. Our results demonstrated for the first time that macrophage beta-arrestin-1 protected against atherosclerosis through the induction of autophagy. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Shao, Bo-Zong AU - Shao BZ AD - Department of Pharmacy, Naval Medical University/Second Military Medical University, Shanghai 200433 China. FAU - Liu, Meng-Zhen AU - Liu MZ AD - Department of Pharmacy, Naval Medical University/Second Military Medical University, Shanghai 200433 China. FAU - Zhu, Dan-Ni AU - Zhu DN AD - Department of Pharmacy, Naval Medical University/Second Military Medical University, Shanghai 200433 China. FAU - Yan, Hui AU - Yan H AD - Department of Pharmacy, Naval Medical University/Second Military Medical University, Shanghai 200433 China. FAU - Ke, Ping AU - Ke P AD - Department of Pharmacy, Naval Medical University/Second Military Medical University, Shanghai 200433 China. FAU - Wei, Wei AU - Wei W AD - State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China. FAU - Han, Ting AU - Han T AD - Department of Pharmacy, Naval Medical University/Second Military Medical University, Shanghai 200433 China. FAU - Liu, Chong AU - Liu C AD - Department of Pharmacy, Naval Medical University/Second Military Medical University, Shanghai 200433 China. Electronic address: wanlc2004@aliyun.com. LA - eng PT - Journal Article DEP - 20231020 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Apolipoproteins E) RN - 0 (beta-Arrestin 1) SB - IM MH - Animals MH - Mice MH - Apolipoproteins E/genetics/metabolism MH - *Atherosclerosis/metabolism MH - Autophagy MH - *beta-Arrestin 1/genetics/metabolism MH - Macrophages/metabolism MH - *Plaque, Atherosclerotic OTO - NOTNLM OT - Atherosclerosis OT - Autophagy OT - Inflammation OT - Macrophage OT - beta-arrestin-1 COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/10/23 00:43 MHDA- 2023/11/20 06:54 CRDT- 2023/10/22 18:13 PHST- 2023/07/12 00:00 [received] PHST- 2023/10/12 00:00 [revised] PHST- 2023/10/15 00:00 [accepted] PHST- 2023/11/20 06:54 [medline] PHST- 2023/10/23 00:43 [pubmed] PHST- 2023/10/22 18:13 [entrez] AID - S1567-5769(23)01411-X [pii] AID - 10.1016/j.intimp.2023.111085 [doi] PST - ppublish SO - Int Immunopharmacol. 2023 Dec;125(Pt A):111085. doi: 10.1016/j.intimp.2023.111085. Epub 2023 Oct 20.