PMID- 22890916 OWN - NLM STAT- MEDLINE DCOM- 20130517 LR - 20211021 IS - 1573-4919 (Electronic) IS - 0300-8177 (Linking) VI - 371 IP - 1-2 DP - 2012 Dec TI - Atorvastatin suppresses oxidized LDL-induced dendritic cell-like differentiation of RAW264.7 cells regulated by the p38 MAPK pathway. PG - 105-13 LID - 10.1007/s11010-012-1427-3 [doi] AB - Dendritic cells (DCs) are the most potent professional antigen-presenting cells and are involved in the initiation and progression of atherosclerosis. Recent data suggest that mature macrophages differentiate into dendritic-like cells when exposed to oxidized low-density lipoprotein (oxLDL). The purpose of the present study was to determine the effect of atorvastatin on the differentiation of macrophages to DCs and the molecular mechanisms of this transition. Mouse macrophage-like RAW264.7 cell was differentiated into a dendritic-like phenotype by incubation with oxLDL in the absence or presence of atorvastatin. The results showed that atorvastatin suppressed DC-like morphologic changes in vitro as assessed by decreased expression of DC maturation markers (CD83, CD11c, CD86, major histocompatibility complex class II, and CD1d). Atorvastatin also inhibited other oxLDL-induced functional changes including endocytic activity, ability to induce T cell proliferation, and cytokine secretion. Western blot analysis showed that oxLDL treatment of RAW264.7 cells induced phosphorylation of p38 mitogen-activated protein kinase (MAPK). However, blocking p38 MAPK with SB203580 significantly downregulated the expression of DC maturation markers, accompanied by decreased cytokine secretion. The findings of the present work demonstrate that that atorvastatin suppresses the oxLDL-induced DC-like differentiation of RAW264.7 cells by inactivating the p38 MAPK signaling pathway. FAU - Hu, Liu-Hua AU - Hu LH AD - Department of Cardiology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China. FAU - Zhang, Tuo AU - Zhang T FAU - Shao, Qin AU - Shao Q FAU - Li, Dan-Dan AU - Li DD FAU - Jin, Shu-Xuan AU - Jin SX FAU - Nie, Peng AU - Nie P FAU - Yi, Jing AU - Yi J FAU - He, Ben AU - He B FAU - Shen, Ling-Hong AU - Shen LH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120814 PL - Netherlands TA - Mol Cell Biochem JT - Molecular and cellular biochemistry JID - 0364456 RN - 0 (Antigens, CD1d) RN - 0 (B7-2 Antigen) RN - 0 (Cd86 protein, mouse) RN - 0 (Heptanoic Acids) RN - 0 (Hydroxymethylglutaryl-CoA Reductase Inhibitors) RN - 0 (Lipoproteins, LDL) RN - 0 (Pyrroles) RN - 0 (oxidized low density lipoprotein) RN - A0JWA85V8F (Atorvastatin) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Antigens, CD1d/genetics/metabolism MH - Atorvastatin MH - B7-2 Antigen/genetics/metabolism MH - Cell Differentiation/drug effects MH - Cell Proliferation MH - Dendritic Cells/cytology/*drug effects/metabolism MH - Down-Regulation MH - Heptanoic Acids/*pharmacology MH - Hydroxymethylglutaryl-CoA Reductase Inhibitors/*pharmacology MH - Lipoproteins, LDL/*antagonists & inhibitors/metabolism MH - Macrophages/cytology/*drug effects/metabolism MH - Mice MH - Pyrroles/*pharmacology MH - Signal Transduction MH - Time Factors MH - p38 Mitogen-Activated Protein Kinases/*metabolism EDAT- 2012/08/15 06:00 MHDA- 2013/05/18 06:00 CRDT- 2012/08/15 06:00 PHST- 2012/04/20 00:00 [received] PHST- 2012/08/03 00:00 [accepted] PHST- 2012/08/15 06:00 [entrez] PHST- 2012/08/15 06:00 [pubmed] PHST- 2013/05/18 06:00 [medline] AID - 10.1007/s11010-012-1427-3 [doi] PST - ppublish SO - Mol Cell Biochem. 2012 Dec;371(1-2):105-13. doi: 10.1007/s11010-012-1427-3. Epub 2012 Aug 14.