PMID- 24305567 OWN - NLM STAT- MEDLINE DCOM- 20140428 LR - 20140225 IS - 1524-4539 (Electronic) IS - 0009-7322 (Linking) VI - 129 IP - 8 DP - 2014 Feb 25 TI - Nanoparticle-mediated delivery of pitavastatin inhibits atherosclerotic plaque destabilization/rupture in mice by regulating the recruitment of inflammatory monocytes. PG - 896-906 LID - 10.1161/CIRCULATIONAHA.113.002870 [doi] AB - BACKGROUND: Preventing atherosclerotic plaque destabilization and rupture is the most reasonable therapeutic strategy for acute myocardial infarction. Therefore, we tested the hypotheses that (1) inflammatory monocytes play a causative role in plaque destabilization and rupture and (2) the nanoparticle-mediated delivery of pitavastatin into circulating inflammatory monocytes inhibits plaque destabilization and rupture. METHODS AND RESULTS: We used a model of plaque destabilization and rupture in the brachiocephalic arteries of apolipoprotein E-deficient (ApoE(-/-)) mice fed a high-fat diet and infused with angiotensin II. The adoptive transfer of CCR2(+/+)Ly-6C(high) inflammatory macrophages, but not CCR2(-/-) leukocytes, accelerated plaque destabilization associated with increased serum monocyte chemoattractant protein-1 (MCP-1), monocyte-colony stimulating factor, and matrix metalloproteinase-9. We prepared poly(lactic-co-glycolic) acid nanoparticles that were incorporated by Ly-6G(-)CD11b(+) monocytes and delivered into atherosclerotic plaques after intravenous administration. Intravenous treatment with pitavastatin-incorporated nanoparticles, but not with control nanoparticles or pitavastatin alone, inhibited plaque destabilization and rupture associated with decreased monocyte infiltration and gelatinase activity in the plaque. Pitavastatin-incorporated nanoparticles inhibited MCP-1-induced monocyte chemotaxis and the secretion of MCP-1 and matrix metalloproteinase-9 from cultured macrophages. Furthermore, the nanoparticle-mediated anti-MCP-1 gene therapy reduced the incidence of plaque destabilization and rupture. CONCLUSIONS: The recruitment of inflammatory monocytes is critical in the pathogenesis of plaque destabilization and rupture, and nanoparticle-mediated pitavastatin delivery is a promising therapeutic strategy to inhibit plaque destabilization and rupture by regulating MCP-1/CCR2-dependent monocyte recruitment in this model. FAU - Katsuki, Shunsuke AU - Katsuki S AD - Department of Cardiovascular Medicine (S.K., T.M., S.N., J.K., Y.N., S.E., K. Sunagawa) and Department of Cardiovascular Research, Development, and Translational Medicine (K. Sato, K.N., K.E.), Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan. FAU - Matoba, Tetsuya AU - Matoba T FAU - Nakashiro, Soichi AU - Nakashiro S FAU - Sato, Kei AU - Sato K FAU - Koga, Jun-ichiro AU - Koga J FAU - Nakano, Kaku AU - Nakano K FAU - Nakano, Yasuhiro AU - Nakano Y FAU - Egusa, Shizuka AU - Egusa S FAU - Sunagawa, Kenji AU - Sunagawa K FAU - Egashira, Kensuke AU - Egashira K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131204 PL - United States TA - Circulation JT - Circulation JID - 0147763 RN - 0 (Apolipoproteins E) RN - 0 (Ccl2 protein, mouse) RN - 0 (Ccr2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Hydroxymethylglutaryl-CoA Reductase Inhibitors) RN - 0 (Quinolines) RN - 0 (Receptors, CCR2) RN - M5681Q5F9P (pitavastatin) SB - IM MH - Adoptive Transfer MH - Animals MH - Apolipoproteins E/genetics MH - Brachiocephalic Trunk/drug effects/immunology/pathology MH - Cell Movement/drug effects/immunology MH - Chemokine CCL2/antagonists & inhibitors/metabolism MH - Disease Models, Animal MH - Drug Delivery Systems/*methods MH - Genetic Therapy/methods MH - Hydroxymethylglutaryl-CoA Reductase Inhibitors/pharmacokinetics MH - Male MH - Mice MH - Mice, 129 Strain MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Monocytes/*drug effects/immunology/pathology MH - Nanoparticles/*metabolism/therapeutic use MH - Plaque, Atherosclerotic/*drug therapy/immunology/pathology MH - Quinolines/*pharmacokinetics MH - Receptors, CCR2/genetics OTO - NOTNLM OT - monocytes OT - myocardial infarction OT - nanoparticles OT - plaque OT - statins, HMG-CoA EDAT- 2013/12/07 06:00 MHDA- 2014/04/29 06:00 CRDT- 2013/12/06 06:00 PHST- 2013/12/06 06:00 [entrez] PHST- 2013/12/07 06:00 [pubmed] PHST- 2014/04/29 06:00 [medline] AID - CIRCULATIONAHA.113.002870 [pii] AID - 10.1161/CIRCULATIONAHA.113.002870 [doi] PST - ppublish SO - Circulation. 2014 Feb 25;129(8):896-906. doi: 10.1161/CIRCULATIONAHA.113.002870. Epub 2013 Dec 4.