Efficacy of an adeno-associated virus 8-pseudotyped vector in glycogen storage disease type II.

Published

Journal Article

Glycogen storage disease type II (GSD-II; Pompe disease) causes death in infancy from cardiorespiratory failure. The underlying deficiency of acid alpha-glucosidase (GAA; acid maltase) can be corrected by liver-targeted gene therapy in GSD-II, if secretion of GAA is accompanied by receptor-mediated uptake in cardiac and skeletal muscle. An adeno-associated virus (AAV) vector encoding human (h) GAA was pseudotyped as AAV8 (AAV2/8) and injected intravenously into immunodeficient GSD-II mice. High levels of hGAA were maintained in plasma for 24 weeks following AAV2/8 vector administration. A marked increase in vector copy number in the liver was demonstrated for the AAV2/8 vector compared to the analogous AAV2/2 vector. GAA deficiency in the heart and skeletal muscle was corrected with the AAV2/8 vector in male GSD-II mice, consistent with receptor-mediated uptake of hGAA. Male GSD-II mice demonstrated complete correction of glycogen storage in heart and diaphragm with the AAV2/8 vector, while female GSD-II mice had correction only in the heart. A biomarker for GSD-II was reduced in both sexes following AAV2/8 vector administration. Therefore, GAA production with an AAV2/8 vector in a depot organ, the liver, generated evidence for efficacious gene therapy in a mouse model for GSD-II.

Full Text

Duke Authors

Cited Authors

  • Sun, B; Zhang, H; Franco, LM; Young, SP; Schneider, A; Bird, A; Amalfitano, A; Chen, Y-T; Koeberl, DD

Published Date

  • January 2005

Published In

Volume / Issue

  • 11 / 1

Start / End Page

  • 57 - 65

PubMed ID

  • 15585406

Pubmed Central ID

  • 15585406

International Standard Serial Number (ISSN)

  • 1525-0016

Digital Object Identifier (DOI)

  • 10.1016/j.ymthe.2004.10.004

Language

  • eng

Conference Location

  • United States