PMID- 30478377 OWN - NLM STAT- MEDLINE DCOM- 20191209 LR - 20191217 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 8 IP - 1 DP - 2018 Nov 26 TI - IL-34 promotes foam cell formation by enhancing CD36 expression through p38 MAPK pathway. PG - 17347 LID - 10.1038/s41598-018-35485-2 [doi] LID - 17347 AB - Atherosclerosis is characterized as a chronic inflammatory disease and macrophage-derived foam cells play a central role during the pathologic processes. A newly discovered cytokine interleukin-34 (IL-34) is closely associated with various inflammatory and autoimmune diseases. Expression of IL-34 in obesity, inflammatory bowel disease (IBD), rheumatoid arthritis (RA), lupus nephritis and coronary artery diseases (CAD) are significantly elevated. However, the role of IL-34 in atherosclerosis remains unknown. In our present study, we found that IL-34 treatment markedly increased the uptake of oxLDL, intracellular total and esterified cholesterol content but not cholesterol efflux, subsequently promoted foam cell formation through up-regulating CD36 expression via p38 MAPK signal pathway in bone marrow derived macrophages (BMDMs). Furthermore, treatment with IL-34 significantly elevated the oxLDL-induced up-regulation of pro-inflammatory cytokines. Our results conclude that IL-34 facilitates foam cell formation by increasing CD36-mediated lipid uptake and suggest a potential new risk biomarker for atherosclerosis. FAU - Liu, Qingyan AU - Liu Q AD - Comprehensive Liver Cancer Center, 302 Military Hospital of China, Beijing, 100039, China. FAU - Fan, Jiao AU - Fan J AD - Institute of Geriatrics, National Clinical Research Center of Geriatrics Disease, Chinese PLA General Hospital, Beijing, 100853, China. FAU - Bai, Jing AU - Bai J AD - Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China. FAU - Peng, Liang AU - Peng L AD - Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, 450003, China. FAU - Zhang, Tao AU - Zhang T AD - Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China. FAU - Deng, Lei AU - Deng L AD - Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China. FAU - Wang, Gaokun AU - Wang G AD - Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China. FAU - Zhao, Yu AU - Zhao Y AD - Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China. FAU - Nong, Jingguo AU - Nong J AD - Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China. FAU - Zhang, Minghua AU - Zhang M AD - Clinical Pharmacy Laboratory, Chinese PLA General Hospital, Beijing, 100853, China. zmreformer@126.com. FAU - Wang, Yu AU - Wang Y AD - Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China. wangyuheart@yeah.net. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20181126 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (ABCA1 protein, mouse) RN - 0 (ABCG1 protein, mouse) RN - 0 (ATP Binding Cassette Transporter 1) RN - 0 (ATP Binding Cassette Transporter, Subfamily G, Member 1) RN - 0 (CD36 Antigens) RN - 0 (Interleukins) RN - 0 (Lipoproteins, LDL) RN - 0 (Scavenger Receptors, Class B) RN - 0 (interleukin-34, mouse) RN - 0 (oxidized low density lipoprotein) RN - 97C5T2UQ7J (Cholesterol) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - ATP Binding Cassette Transporter 1/metabolism MH - ATP Binding Cassette Transporter, Subfamily G, Member 1/metabolism MH - Animals MH - Atherosclerosis/metabolism/pathology MH - Bone Marrow Cells/cytology MH - CD36 Antigens/genetics/*metabolism MH - Cholesterol/metabolism MH - Foam Cells/*cytology/metabolism MH - Interleukins/*metabolism/pharmacology MH - Lipoproteins, LDL/metabolism MH - Macrophages/cytology/drug effects/*metabolism MH - Mice, Inbred C57BL MH - Scavenger Receptors, Class B/metabolism MH - p38 Mitogen-Activated Protein Kinases/*metabolism PMC - PMC6255782 COIS- The authors declare no competing interests. EDAT- 2018/11/28 06:00 MHDA- 2019/12/18 06:00 PMCR- 2018/11/26 CRDT- 2018/11/28 06:00 PHST- 2018/04/03 00:00 [received] PHST- 2018/11/01 00:00 [accepted] PHST- 2018/11/28 06:00 [entrez] PHST- 2018/11/28 06:00 [pubmed] PHST- 2019/12/18 06:00 [medline] PHST- 2018/11/26 00:00 [pmc-release] AID - 10.1038/s41598-018-35485-2 [pii] AID - 35485 [pii] AID - 10.1038/s41598-018-35485-2 [doi] PST - epublish SO - Sci Rep. 2018 Nov 26;8(1):17347. doi: 10.1038/s41598-018-35485-2.