Effects of VLA-1 Blockade on Experimental Inflammation in Mice

Overview

Journal Kobe J Med Sci

Specialty General Medicine

Date 2016 Sep 1

PMID 27578034

Citations 1

Authors

Ryuichi Totsuka

Takaaki Kondo

Shigeki Matsubara

Midori Hirai

Yoichi Kurebayashi

Affiliations

Soon will be listed here.

Abstract

VLA-1 (very late antigen-1) is implicated in recruitment, retention and activation of leukocytes and its blockade has been referred as a potential target of new drug discovery to address unmet medical needs in inflammatory disease area. In the present study, we investigate the effects of an anti-murine CD49a (integrin α subunit of VLA-1) monoclonal antibody (Ha31/8) on various experimental models of inflammatory diseases in mice. Pretreatment with Ha31/8 at an intraperitoneal dose of 250 µg significantly (P<0.01) reduced arthritic symptoms and joint tissue damage in mice with type II collagen-induced arthritis. In addition, Ha31/8 at an intraperitoneal dose of 100 µg significantly (P<0.01) inhibited airway inflammatory cell infiltration induced by repeated exposure to cigarette smoke. In contrast, Ha31/8 failed to inhibit oxazolone-induced chronic dermatitis and OVA-induced airway hyperresponsiveness at an intraperitoneal dose of 100 µg. These results show that VLA-1 is involved, at least partly, in the pathogenesis of type II collagen-induced arthritis and cigarette smoke-induced airway inflammatory cell infiltration in mice, indicating the therapeutic potential of VLA-1 blockade against rheumatoid arthritis and chronic occlusive pulmonary disease.

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