PMID- 16316965 OWN - NLM STAT- MEDLINE DCOM- 20060221 LR - 20121115 IS - 1524-4539 (Electronic) IS - 0009-7322 (Linking) VI - 112 IP - 22 DP - 2005 Nov 29 TI - Critical role for monocyte chemoattractant protein-1 and macrophage inflammatory protein-1alpha in induction of experimental autoimmune myocarditis and effective anti-monocyte chemoattractant protein-1 gene therapy. PG - 3400-7 AB - BACKGROUND: Autoimmune myocarditis is a principal cause of heart failure among young adults and is often a precursor of dilated cardiomyopathy. Monocyte chemoattractant protein-1 (MCP-1) and macrophage inflammatory protein-1alpha (MIP-1alpha) are potent chemotactic factors for mononuclear cells. The inflammatory infiltrate observed in myocardial lesions of myocarditis consists of >70% mononuclear cells. To determine their critical role in the pathogenesis of myocarditis, we inhibited mononuclear cell activation and migration to see if it would affect disease severity and disease prevalence in experimental autoimmune myocarditis (EAM). METHODS AND RESULTS: In this report, we demonstrated that blockade of MCP-1 or MIP-1alpha with monoclonal antibodies significantly reduced severity of myocarditis in BALB/c mice immunized with cardiac myosin. Similar results were obtained when CCR2-/- and CCR5-/- mice were used. In CCR2-/- mice, not only disease severity but also disease prevalence was reduced. To further inhibit mononuclear cell activation and migration, we transfected the mice before inducing EAM with a dominant-negative inhibitor of MCP-1 gene (7ND). This transfection significantly reduced the disease severity, decreased mRNA expression levels, especially of the chemokines RANTES, MIP-2, IP-10, MCP-1, T-cell activation gene 3, and eotaxin in the myocardium, and resulted in a reduction in cardiac myosin-induced interleukin-1 and interleukin-4 and in an increase in interferon-gamma and interleukin-10 cytokine production by splenocytes. CONCLUSIONS: Overall, these findings suggest that the chemokines MCP-1 and MIP-1alpha, acting through their receptors CCR2 and CCR5, are important in the induction of EAM and that inhibition of MCP-1 with 7ND gene transfection significantly reduced disease severity. This strategy may be a new feasible form of gene therapy against autoimmune myocarditis. FAU - Goser, Stefan AU - Goser S AD - Department of Internal Medicine III, University of Heidelberg, Germany. FAU - Ottl, Renate AU - Ottl R FAU - Brodner, Alexander AU - Brodner A FAU - Dengler, Thomas J AU - Dengler TJ FAU - Torzewski, Jan AU - Torzewski J FAU - Egashira, Kensuke AU - Egashira K FAU - Rose, Noel R AU - Rose NR FAU - Katus, Hugo A AU - Katus HA FAU - Kaya, Ziya AU - Kaya Z LA - eng GR - HL67290/HL/NHLBI NIH HHS/United States GR - HL70729/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Circulation JT - Circulation JID - 0147763 RN - 0 (Antibodies, Monoclonal) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CCL3) RN - 0 (Chemokine CCL4) RN - 0 (Chemokines) RN - 0 (Macrophage Inflammatory Proteins) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Chemokine) RN - EC 3.6.4.1 (Myosins) SB - IM MH - Animals MH - Antibodies, Monoclonal/*therapeutic use MH - Autoimmune Diseases/etiology/therapy MH - Chemokine CCL2/*antagonists & inhibitors/genetics/*physiology MH - Chemokine CCL3 MH - Chemokine CCL4 MH - Chemokines/genetics MH - Chemotaxis, Leukocyte/drug effects MH - Disease Models, Animal MH - Genetic Therapy/*methods MH - Macrophage Inflammatory Proteins/*physiology MH - Mice MH - Mice, Inbred BALB C MH - Mice, Knockout MH - Monocytes/drug effects/pathology MH - Mutation MH - Myocarditis/*etiology/immunology/*therapy MH - Myosins/administration & dosage MH - RNA, Messenger/analysis MH - Receptors, Chemokine/genetics MH - Transfection MH - Treatment Outcome EDAT- 2005/12/01 09:00 MHDA- 2006/02/24 09:00 CRDT- 2005/12/01 09:00 PHST- 2005/12/01 09:00 [pubmed] PHST- 2006/02/24 09:00 [medline] PHST- 2005/12/01 09:00 [entrez] AID - 112/22/3400 [pii] AID - 10.1161/CIRCULATIONAHA.105.572396 [doi] PST - ppublish SO - Circulation. 2005 Nov 29;112(22):3400-7. doi: 10.1161/CIRCULATIONAHA.105.572396.