Neutralization of IL-17 inhibits the production of anti-ANT autoantibodies in CVB3-induced acute viral myocarditis

International Immunopharmacology
Jing YuanYu-Hua Liao

Abstract

Anti-adenine nucleotide translocator (ANT) autoantibodies are related to the development of Coxsackievirus B3 (CVB3)-triggered acute viral myocarditis (AVMC). Recently, studies suggested that IL-17 especially produced by a novel CD4(+) Th-cell subset Th17 cells contributed to the production of pathogenic autoantibodies in some autoimmune diseases. However, the pathogenic role of IL-17 in AVMC remains largely unknown. In this study, we investigated whether IL-17 was associated with the disease progression and the production of anti-ANT autoantibodies in AVMC mouse model. The results showed that IL-17 monoclonal antibody (mAb)-treated AVMC mice had decreased HW/BW, reduced serum CK-MB activity and improved pathological score of heart sections along with the reduction of circulating IL-17 level and serum anti-ANT autoantibodies. The correlation index of serum IL-17 concentration and anti-ANT-autoantibody level was 0.874, p<0.01. In addition, the experimental results in vitro further proved that IL-17mAb could inhibit the proliferation of CD19(+) B lymphocytes and the secretion of anti-ANT autoantibodies. Our data suggested that IL-17 was related to the disease progression in AVMC mouse model by regulating the production of autoant...Continue Reading

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