PMID- 35234362 OWN - NLM STAT- MEDLINE DCOM- 20220511 LR - 20220516 IS - 1615-9861 (Electronic) IS - 1615-9853 (Linking) VI - 22 IP - 10 DP - 2022 May TI - Effects of ABCG1 knockout on proteomic composition of HDL in mice on a chow diet and a high-fat diet. PG - e2100028 LID - 10.1002/pmic.202100028 [doi] AB - ATP-binding cassette transporter G1 (ABCG1) is a cellular transmembrane protein that transports oxysterol efflux from cells to high-density lipoprotein (HDL) particles in the plasma. Previous studies have demonstrated that an ABCG1 deficiency exerts an antiatherosclerotic function through the effects of oxysterol accumulation in cells to enhance apoptosis and regulate inflammatory processes. However, whether the deficiency of ABCG1 and the corresponding changes in the efflux of oxysterols could take a series of impacts on the proteomic composition of HDL remains unclear. Here, plasma HDL of ABCG1(-/-) mice and their wild-type controls on a normal chow diet (NCD) or a high-fat diet (HFD) were isolated by ultracentrifugation. The proportion of 7-ketocholesterol and the proteomic composition of samples were comparatively analyzed by LC-MS/MS. In NCD-fed mice, lipid metabolism-related protein (arachidonate 12-lipoxygenase) and antioxidative protein (pantetheinase) exhibited increased accumulation, and inflammatory response protein (alpha-1-antitrypsin) was decreased in accumulation in ABCG1(-/-) mice HDL. In HFD-fed mice, fewer proteins were detected than that of NCD-fed mice. The ABCG1(-/-) mice HDL exhibited increased accumulation of lipid metabolism-related proteins (e.g., carboxylesterase 1C, apolipoprotein (apo)C-4) and decreased accumulation of alpha-1-antitrypsin, as well as significantly reduced proportion of 7-ketocholesterol. Additionally, positive correlations were found between 7-ketocholesterol and some essential proteins on HDL, such as alpha-1-antitrypsin, apoA-4, apoB-100, and serum amyloid A (SAA). These results suggest a detrimental impact of oxysterols on HDL composition, which might affect the antiatherosclerotic properties of HDL. CI - (c) 2022 Wiley-VCH GmbH. FAU - Wu, Yanxiang AU - Wu Y AUID- ORCID: 0000-0001-5490-5719 AD - Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Chen, Lianfeng AU - Chen L AD - Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Xie, Ziyan AU - Xie Z AUID- ORCID: 0000-0002-1728-5001 AD - Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Wang, Chenyu AU - Wang C AUID- ORCID: 0000-0002-2416-2544 AD - Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Zhang, Jiahao AU - Zhang J AD - Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Yan, Xiaowei AU - Yan X AUID- ORCID: 0000-0003-4873-4006 AD - Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220308 PL - Germany TA - Proteomics JT - Proteomics JID - 101092707 RN - 0 (ABCG1 protein, mouse) RN - 0 (ATP Binding Cassette Transporter, Subfamily G, Member 1) RN - 0 (Lipoproteins) SB - IM MH - ATP Binding Cassette Transporter, Subfamily G, Member 1/genetics MH - Animals MH - Chromatography, Liquid MH - *Diet, High-Fat/adverse effects MH - Lipoproteins/metabolism MH - Mice MH - Mice, Knockout MH - *Noncommunicable Diseases MH - Proteomics MH - Tandem Mass Spectrometry OTO - NOTNLM OT - ABCG1 OT - HDL OT - atherosclerosis OT - oxysterol OT - proteomics EDAT- 2022/03/03 06:00 MHDA- 2022/05/12 06:00 CRDT- 2022/03/02 08:43 PHST- 2022/02/18 00:00 [revised] PHST- 2021/01/28 00:00 [received] PHST- 2022/02/18 00:00 [accepted] PHST- 2022/03/03 06:00 [pubmed] PHST- 2022/05/12 06:00 [medline] PHST- 2022/03/02 08:43 [entrez] AID - 10.1002/pmic.202100028 [doi] PST - ppublish SO - Proteomics. 2022 May;22(10):e2100028. doi: 10.1002/pmic.202100028. Epub 2022 Mar 8.