0000000001087873
AUTHOR
Thomas Dehmel
The metalloproteinase-disintegrin ADAM10 is exclusively expressed by type I muscle fibers.
ADAM10 (Kuzbanian) is a member of a recently discovered family of membrane-anchored metalloproteinases with a complex and conserved domain structure. In part, these metalloproteinases have been implicated in muscle formation. Herein the expression pattern of ADAM10 in human skeletal muscle was studied. ADAM10 was found to be present in human myoblasts and to be exclusively expressed in type I fibers, suggesting that it may be critical in muscle fiber differentiation.
The cell-specific expression of metalloproteinase-disintegrins (ADAMs) in inflammatory myopathies
Inflammatory cell invasion and cytokine activation are important steps in the pathogenesis of immune-mediated diseases of muscle. Metalloproteinase-disintegrins (ADAMs) are considered to play a critical role in leukocyte migration by promoting cellular adhesion, cleavage of molecules of the extracellular matrix and shedding of membrane bound cytokines. Here, we report the expression patterns of ADAM8, ADAM9, ADAM10, ADAM12, ADAM17 and ADAM19 in cultured human myoblasts and peripheral blood mononuclear cells (PBMCs) in vitro, as well as in biopsies from patients suffering from polymyositis (PM), dermatomyositis (DM), inclusion body myositis (IBM) and non-inflammatory controls. We observed an…