PMID- 11095710 OWN - NLM STAT- MEDLINE DCOM- 20010118 LR - 20220309 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 97 IP - 25 DP - 2000 Dec 5 TI - Adeno-associated virus vector carrying human minidystrophin genes effectively ameliorates muscular dystrophy in mdx mouse model. PG - 13714-9 AB - Duchenne muscular dystrophy (DMD) is the most common and lethal genetic muscle disorder, caused by recessive mutations in the dystrophin gene. One of every 3,500 males suffers from DMD, yet no treatment is currently available. Genetic therapeutic approaches, using primarily myoblast transplantation and adenovirus-mediated gene transfer, have met with limited success. Adeno-associated virus (AAV) vectors, although proven superior for muscle gene transfer, are too small (5 kb) to package the 14-kb dystrophin cDNA. Here we have created a series of minidystrophin genes (<4.2 kb) under the control of a muscle-specific promoter that readily package into AAV vectors. When injected into the muscle of mdx mice (a DMD model), two of the minigenes resulted in efficient and stable expression in a majority of the myofibers, restoring the missing dystrophin and dystrophin-associated protein complexes onto the plasma membrane. More importantly, this AAV treatment ameliorated dystrophic pathology in mdx muscle and led to normal myofiber morphology, histology, and cell membrane integrity. Thus, we have defined minimal functional dystrophin units and demonstrated the effectiveness of using AAV to deliver the minigenes in vivo, offering a promising avenue for DMD gene therapy. FAU - Wang, B AU - Wang B AD - Department of Molecular Genetics and Biochemistry, Gene Therapy Center, and Duchenne Muscular Dystrophy Research Center and Department of Orthopedic Surgery, University of Pittsburgh, Pittsburgh, PA 15261, USA. FAU - Li, J AU - Li J FAU - Xiao, X AU - Xiao X LA - eng GR - P01 AR045925/AR/NIAMS NIH HHS/United States GR - R01 AR045967/AR/NIAMS NIH HHS/United States GR - AR 45926/AR/NIAMS NIH HHS/United States GR - AR45967/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (Dystrophin) SB - IM CIN - Proc Natl Acad Sci U S A. 2000 Dec 5;97(25):13464-6. PMID: 11095702 MH - Animals MH - Dependovirus/*genetics MH - Disease Models, Animal MH - Dystrophin/*genetics MH - *Genetic Vectors MH - Humans MH - Mice MH - Mice, Inbred mdx MH - Muscular Dystrophy, Duchenne/*genetics/pathology PMC - PMC17641 EDAT- 2000/11/30 11:00 MHDA- 2001/02/28 10:01 PMCR- 2001/06/05 CRDT- 2000/11/30 11:00 PHST- 2000/11/30 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/11/30 11:00 [entrez] PHST- 2001/06/05 00:00 [pmc-release] AID - 240335297 [pii] AID - 3352 [pii] AID - 10.1073/pnas.240335297 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2000 Dec 5;97(25):13714-9. doi: 10.1073/pnas.240335297.