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The receptor for adeno-associated virus serotype 2 (AAV2) in Purkinje cells has not been identified, but based on work carried out in non-neuronal cell lines, heparan sulfate proteoglycan is thought to act as a primary receptor, with basic fibroblast growth factor receptor-1 being reported as a co-receptor. In this study, using antibody interference and protein competition strategies, we show specific reduction in Purkinje cell transduction by AAV2 vector in the presence of these inhibitors. We also demonstrate AAV2-mediated transgene expression in Purkinje cells in vivo that extends out to one year post-injection. These results provide new information on fibroblast growth factor receptor-1 involvement in AAV2-mediated transduction of Purkinje cells and have important implications for AAV-mediated treatment of various cerebellar disorders.

archives of virology

Adeno-associated virus type 2 vectors: transduction and long-term expression in cerebellar Purkinje cells in vivo is mediated by the fibroblast growth factor receptor 1