Long-term correction of glycogen storage disease type II with a hybrid Ad-AAV vector.

Published

Journal Article

We administered an adenovirus-adeno-associated virus (Ad-AAV) vector encoding human acid alpha-glucosidase (hGAA) to acid alpha-glucosidase-knockout (GAA-KO) mice on day 3 of life by gastrocnemius injection. In contrast to previous results for muscle-targeted Ad vector in adult GAA-KO mice, the muscles of the hindlimb showed reduced glycogen content and persistent hGAA for as long as 6 months after neonatal Ad-AAV vector administration. Not only the injected gastrocnemius muscles, but also the hamstrings and quadriceps muscles produced therapeutic levels of hGAA as a result of widespread transduction with the Ad-AAV vector; moreover, hGAA activity was 50-fold elevated as compared to normal mice. Vector RNA was detected in the hindlimb muscles, the hearts, and the livers by northern blot analysis and/or by RT-PCR for as long as 6 months. The low levels of hGAA detected in the heart were attributable to transduction with the Ad-AAV vector, not to secretion of hGAA by the injected muscle and uptake by the heart. Finally, although an antibody response to hGAA was present, it did not prevent the correction of glycogen storage in the skeletal muscle of GAA-KO mice.

Full Text

Duke Authors

Cited Authors

  • Sun, B-D; Chen, Y-T; Bird, A; Amalfitano, A; Koeberl, DD

Published Date

  • February 2003

Published In

Volume / Issue

  • 7 / 2

Start / End Page

  • 193 - 201

PubMed ID

  • 12597907

Pubmed Central ID

  • 12597907

International Standard Serial Number (ISSN)

  • 1525-0016

Digital Object Identifier (DOI)

  • 10.1016/s1525-0016(02)00055-2

Language

  • eng

Conference Location

  • United States