PMID- 15960599 OWN - NLM STAT- MEDLINE DCOM- 20050927 LR - 20071114 IS - 1043-0342 (Print) IS - 1043-0342 (Linking) VI - 16 IP - 6 DP - 2005 Jun TI - Patterns of gene expression from in utero delivery of adenoviral-associated vector serotype 1. PG - 678-84 AB - Adenoviral-associated viral vectors (AAV) have shown significant promise for efficient gene delivery to multiple tissues. Studies of different serotypes of AAV revealed different expression patterns provided by gene delivery in postnatal mice. Previous in utero gene delivery studies of AAV serotype 2 (AAV2) demonstrated efficient gene expression in certain fetal tissues depending on route of administration. We studied the pattern of gene expression from AAV serotype 1 (AAV1) using intramuscular, intraperitoneal, and intravascular routes of administration in embryonic day 16 C57BL/6 mice. Limb skeletal muscle transduction was only achieved with AAV1 by intramuscular administration. The levels of gene expression were 20-fold higher than a comparable administration of AAV2. Diaphragm muscle transduction by AAV1 was achieved at the highest level by intraperitoneal administration, and to a lesser degree by intravascular administration. All delivery routes resulted in transgene expression in the lung. Our results indicate that AAV1 can offer higher transgene expression in fetal skeletal muscle than AAV2 with intramuscular administration. The transgene expression pattern in different tissues, which depends on vector serotype and route of administration, will need to be considered in planning therapeutic studies for specific disorders. FAU - Bilbao, Roberto AU - Bilbao R AD - Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA. FAU - Reay, Daniel P AU - Reay DP FAU - Li, Juan AU - Li J FAU - Xiao, Xiao AU - Xiao X FAU - Clemens, Paula R AU - Clemens PR LA - eng GR - P01 AR45925/AR/NIAMS NIH HHS/United States GR - R01 AR050565/AR/NIAMS NIH HHS/United States GR - U01 NS46546/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Hum Gene Ther JT - Human gene therapy JID - 9008950 RN - EC 3.2.1.23 (beta-Galactosidase) SB - IM MH - Animals MH - Dependovirus/*genetics MH - Female MH - Gene Expression MH - *Gene Transfer Techniques MH - Genetic Vectors/*administration & dosage/genetics MH - Injections, Intramuscular MH - Injections, Intraperitoneal MH - Mice MH - Mice, Inbred C57BL MH - Muscle, Skeletal/*embryology/physiology MH - Pregnancy MH - Tissue Distribution MH - Transgenes MH - beta-Galactosidase/genetics/pharmacokinetics EDAT- 2005/06/18 09:00 MHDA- 2005/09/28 09:00 CRDT- 2005/06/18 09:00 PHST- 2005/06/18 09:00 [pubmed] PHST- 2005/09/28 09:00 [medline] PHST- 2005/06/18 09:00 [entrez] AID - 10.1089/hum.2005.16.678 [doi] PST - ppublish SO - Hum Gene Ther. 2005 Jun;16(6):678-84. doi: 10.1089/hum.2005.16.678.