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- W2201116758 abstract "Effective gene delivery to the central nervous system (CNS) is vital for development of novel gene therapies for neurological diseases. Adeno-associated virus (AAV) vectors have emerged as an effective platform for in vivo gene transfer, but overall neuronal transduction efficiency of vectors derived from naturally occurring AAV capsids after systemic administration is relatively low. Here, we investigated the possibility of improving CNS transduction of existing AAV capsids by genetically fusing peptides to the N-terminus of VP2 capsid protein. A novel vector AAV-AS, generated by the insertion of a poly-alanine peptide, is capable of extensive gene transfer throughout the CNS after systemic administration in adult mice. AAV-AS is 6- and 15-fold more efficient than AAV9 in spinal cord and cerebrum, respectively. The neuronal transduction profile varies across brain regions but is particularly high in the striatum where AAV-AS transduces 36% of striatal neurons. Widespread neuronal gene transfer was also documented in cat brain and spinal cord. A single intravenous injection of an AAV-AS vector encoding an artificial microRNA targeting huntingtin (Htt) resulted in 33-50% knockdown of Htt across multiple CNS structures in adult mice. This novel AAV-AS vector is a promising platform to develop new gene therapies for neurodegenerative disorders." @default.
- W2201116758 created "2016-06-24" @default.
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- W2201116758 date "2016-04-01" @default.
- W2201116758 modified "2023-10-13" @default.
- W2201116758 title "Widespread Central Nervous System Gene Transfer and Silencing After Systemic Delivery of Novel AAV-AS Vector" @default.
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- W2201116758 doi "https://doi.org/10.1038/mt.2015.231" @default.
- W2201116758 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4886933" @default.
- W2201116758 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26708003" @default.
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