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Viruses 2014, 6(8), 3293-3310; doi:10.3390/v6083293

Fiber-Modified Adenovirus for Central Nervous System Parkinson’s Disease Gene Therapy

Received: 29 November 2013 / Revised: 22 July 2014 / Accepted: 27 July 2014 / Published: 21 August 2014
(This article belongs to the Special Issue Adenoviral Vectors)
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Gene-based therapies for neurological diseases continue to develop briskly. As disease mechanisms are elucidated, flexible gene delivery platforms incorporating transcriptional regulatory elements, therapeutic genes and targeted delivery are required for the safety and efficacy of these approaches. Adenovirus serotype 5 (Ad5)-based vectors can carry large genetic payloads to provide this flexibility, but do not transduce neuronal cells efficiently. To address this, we have developed a tropism-modified Ad5 vector with neuron-selective targeting properties for evaluation in models of Parkinson disease therapy. A panel of tropism-modified Ad5 vectors was screened for enhanced gene delivery in a neuroblastoma cell line model system. We used these observations to design and construct an unbiased Ad vector platform, consisting of an unmodified Ad5 and a tropism-modified Ad5 vector containing the fiber knob domain from canine Ad serotype 2 (Ad5-CGW-CK2). Delivery to the substantia nigra or striatum showed that this vector produced a neuronally-restricted pattern of gene expression. Many of the transduced neurons were from regions with afferent projections to the injection site, implicating that the vector binds the presynaptic terminal resulting in presynaptic transduction. We show that Ad5-CGW-CK2 can selectively transduce neurons in the brain and hypothesize that this modular platform is potentially adaptable to clinical use.
Keywords: gene therapy; adenovirus; brain; CNS; Parkinson disease gene therapy; adenovirus; brain; CNS; Parkinson disease
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Lewis, T.B.; Glasgow, J.N.; Harms, A.S.; Standaert, D.G.; Curiel, D.T. Fiber-Modified Adenovirus for Central Nervous System Parkinson’s Disease Gene Therapy. Viruses 2014, 6, 3293-3310.

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