Details

Autor(en) / Beteiligte

• de Vrij, Jeroen
• van den Hengel, Sanne K
• Uil, Taco G
• Koppers-Lalic, Danijela
• Dautzenberg, Iris J.C
• Stassen, Oscar M.J.A
• Bárcena, Montserrat
• Yamamoto, Masato
• de Ridder, Corrina M.A
• Kraaij, Robert
• Kwappenberg, Kitty M
• Schilham, Marco W
• Hoeben, Rob C

Titel

Enhanced transduction of CAR-negative cells by protein IX-gene deleted adenovirus 5 vectors

Ist Teil von

• Virology (New York, N.Y.), 2011-02, Vol.410 (1), p.192-200

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2011

Quelle

ScienceDirect

Beschreibungen/Notizen

• Abstract In human adenoviruses (HAdV), 240 copies of the 14.3-kDa minor capsid protein IX stabilize the capsid. Three N-terminal domains of protein IX form triskelions between hexon capsomers. The C-terminal domains of four protein IX monomers associate near the facet periphery. The precise biological role of protein IX remains enigmatic. Here we show that deletion of the protein IX gene from a HAdV-5 vector enhanced the reporter gene delivery 5 to 25-fold, specifically to Coxsackie and Adenovirus Receptor (CAR)-negative cell lines. Deletion of the protein IX gene also resulted in enhanced activation of peripheral blood mononuclear cells. The mechanism for the enhanced transduction is obscure. No differences in fiber loading, integrin-dependency of transduction, or factor-X binding could be established between protein IX-containing and protein IX-deficient particles. Our data suggest that protein IX can affect the cell tropism of HAdV-5, and may function to dampen the innate immune responses against HAdV particles.