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Thomas Jefferson University

Department of Pharmacology and Experimental Therapeutics Faculty Papers

2020

Surgery

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Chimeric Ad5.F35 Vector Evades Anti-Adenovirus Serotype 5 Neutralization Opposing Gucy2c-Targeted Antitumor Immunity, John C. Flickinger, Jagmohan Singh, Robert D Carlson, Elinor Leong, Trevor R. Baybutt, Joshua Barton, Ellen M. Caparosa, Amanda M. Pattison, Jeff A. Rappaport, Jamin Roh, Tingting Zhan, Babar Bashir, Scott A Waldman, Adam E. Snook Aug 2020

Chimeric Ad5.F35 Vector Evades Anti-Adenovirus Serotype 5 Neutralization Opposing Gucy2c-Targeted Antitumor Immunity, John C. Flickinger, Jagmohan Singh, Robert D Carlson, Elinor Leong, Trevor R. Baybutt, Joshua Barton, Ellen M. Caparosa, Amanda M. Pattison, Jeff A. Rappaport, Jamin Roh, Tingting Zhan, Babar Bashir, Scott A Waldman, Adam E. Snook

Department of Pharmacology and Experimental Therapeutics Faculty Papers

BACKGROUND: Adenovirus serotype 5 (Ad5) is a commonly used viral vector for transient delivery of transgenes, primarily for vaccination against pathogen and tumor antigens. However, endemic infections with Ad5 produce virus-specific neutralizing antibodies (NAbs) that limit transgene delivery and constrain target-directed immunity following exposure to Ad5-based vaccines. Indeed, clinical trials have revealed the limitations that virus-specific NAbs impose on the efficacy of Ad5-based vaccines. In that context, the emerging focus on immunological approaches targeting cancer self-antigens or neoepitopes underscores the unmet therapeutic need for more efficacious vaccine vectors.

METHODS: Here, we evaluated the ability of a chimeric adenoviral vector (Ad5.F35) …