Journal
BRAIN RESEARCH
Volume 1122, Issue -, Pages 1-9Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.brainres.2006.09.042
Keywords
adeno-associated virus (AAV); serotype; tropism; central nervous system (CNS); real-time quantity RT-PCR
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Most gene transfer studies conducted in the central nervous system (CNS) with recombinant adeno-associated virus (rAAV) vectors have been carried out by direct intra-parenchymal injection. However, this delivery method usually results in transduction of cells in only a limited region and is quite invasive, which may hamper its potential clinical application. Injection of viral vectors into the cerebrospinal fluid (CSF) may provide an alternative strategy for widespread gene delivery to the CNS via the subarachnoid space. In this study we compared the transduction abilities of rAAV types 1, 2, and 5 when infused directly into the right lateral cerebral ventricle of adult rats. Multiple structures in the vicinity of the lateral ventricle were transduced by rAAV1, but not by rAAV2 or rAAV5 vectors. Double immunolabeling showed that the transduced cells included not only neurons, but also glia. Real-time quantitative reverse transcriptase-polymerase chain reaction (RT-PCR) experiments demonstrated that rAAV1-mediated EGFP mRNA expression was significantly higher than that induced by either rAAV2 or S. Our data suggest that intra-ventricular infusion of rAAV1 vectors provides a useful method for broad gene delivery to cells in the adult rat CNS. (c) 2006 Elsevier B.V. All rights reserved.
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