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Effect of neutralizing sera on factor x-mediated adenovirus serotype 5 gene transfer

Parker, Alan, Waddington, Simon N., Buckley, Suzanne M. K., Custers, Jerome, Havenga, M. J. E., van Rooijen, Nico., Goudsmit, J., Mcvey, John H., Nicklin, Stuart A. and Baker, Andrew H. 2009. Effect of neutralizing sera on factor x-mediated adenovirus serotype 5 gene transfer. Journal of Virology 83 (1) , pp. 479-483. 10.1128/JVI.01878-08

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Abstract

The deployment of adenovirus serotype 5 (Ad5)-based vectors is hampered by preexisting immunity. When such vectors are delivered intravenously, hepatocyte transduction is mediated by the hexon-coagulation factor X (FX) interaction. Here, we demonstrate that human sera efficiently block FX-mediated cellular binding and transduction of Ad5-based vectors in vitro. Neutralizing activity correlated well with the ability to inhibit Ad5-mediated liver transduction, suggesting that prescreening patient sera in this manner accurately predicts the efficacy of Ad5-based gene therapies. Neutralization in vitro can be partially bypassed by pseudotyping with Ad45 fiber protein, indicating that a proportion of neutralizing antibodies are directed against the Ad5 fiber.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: Q Science > QH Natural history > QH426 Genetics
R Medicine > RM Therapeutics. Pharmacology
Additional Information: Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0022-538X/ (accessed 25/02/2014)
Publisher: American Society for Microbiology
ISSN: 0022-538X
Date of First Compliant Deposit: 30 March 2016
Last Modified: 04 Jun 2017 04:42
URI: http://orca.cf.ac.uk/id/eprint/43262

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