Adenovirus 11p downregulates CD46 early in infection

Virology
Dan GustafssonYa-Fang Mei

Abstract

Adenovirus 11 prototype (Ad11p), belonging to species B, uses CD46 as an attachment receptor. CD46, a complement regulatory molecule, is expressed on all human nucleated cells. We show here that Ad11p virions downregulate CD46 on the surface of K562 cells as early as 5min p.i. Specific binding to CD46 by the Ad11p fiber knob was required to mediate downregulation. The complement regulatory factors CD55 and CD59 were also reduced to a significant extent as a consequence of Ad11p binding to K562 cells. In contrast, binding of Ad7p did not result in downregulation of CD46 early in infection. Thus, the presumed interaction between Ad7p and CD46 did not have the same consequences as the Ad11p-CD46 interaction, the latter virus (Ad11p) being a promising gene therapy vector candidate. These findings may lead to a better understanding of the pathogenesis of species B adenovirus infections.

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Citations

May 25, 2012·Trends in Pharmacological Sciences·Niklas Arnberg
Sep 12, 2015·Molecular Biology International·Carl Z ChenDimitrios Morikis
Oct 17, 2013·International Reviews of Immunology·Rong-Fu Chen, Chun-Yi Lee
Jul 24, 2015·Science Translational Medicine·J Harry SweigardKip M Connor
Nov 3, 2012·International Journal of Oncology·Xing LiHaibin Xia

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