Effect of Neutralizing Sera on Factor X-Mediated Adenovirus Serotype 5 Gene Transfer

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

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 ...

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Neutralizing antibodies to adenovirus serotype 5 vaccine vectors are directed primarily against the adenovirus hexon protein.

The utility of recombinant adenovirus serotype 5 (rAd5) vector-based vaccines for HIV-1 and other pathogens will likely be limited by the high prevalence of pre-existing Ad5-specific neutralizing Abs (NAbs) in human populations. However, the immunodominant targets of Ad5-specific NAbs in humans remain poorly characterized. In this study, we assess the titers and primary determinants of Ad5-spec...

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ژورنال

عنوان ژورنال: Journal of Virology

سال: 2009

ISSN: 0022-538X,1098-5514

DOI: 10.1128/jvi.01878-08