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Trends Mol Med. 2001 Jan;7(1):37-9.

Disease model: LAMP-2 enlightens Danon disease.

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  • 1Zentrum Biochemie und Molekulare Zellbiologie, Abt. Biochemie II, Universität Göttingen, Heinrich-Düker-Weg 12, 37073 Göttingen, Germany. psaftig@gwdg.de


Danon disease ('lysosomal glycogen storage disease with normal acid maltase') is characterized by a cardiomyopathy, myopathy and variable mental retardation. Mutations in the coding sequence of the lysosomal-associated membrane protein 2 (LAMP-2) were shown to cause a LAMP-2 deficiency in patients with Danon disease. LAMP-2 deficient mice manifest a similar vacuolar cardioskeletal myopathy. In addition to the patient reports LAMP-2 deficiency in mice causes pancreatic, hepatocytic, endothelial and leucocyte vacuolation. LAMP-2 deficient mice represent a valuable animal model of Danon disease. They will further be used to study the exact role of LAMP-2 in autophagy and to analyse the consequences of an impaired autophagic pathway in various tissues.

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