A Novel Mechanism Underlying Antiviral Activity of an Influenza Virus M2-Specific Antibody

Rashid Manzoor, Nao Eguchi, Reiko Yoshida, Hiroichi Ozaki, Tatsunari Kondoh, Kosuke Okuya, Hiroko Miyamoto, Ayato Takada

doi:10.1128/jvi.01277-20

<jats:p>Although the IAV HA is the major target of neutralizing antibodies, most of the antibodies are HA subtype specific, restricting the potential of HA-based vaccines. On the contrary, the IAV M2 protein has been studied as a vaccine antigen to confer cross-protective immunity against IAVs with multiple HA subtypes, since M2 is antigenically conserved. Although a number of studies highlight the protective role of anti-HA neutralizing and nonneutralizing antibodies, precise information on the molecular mechanism of action of M2-specific antibodies is still obscure. In this study, we found that an anti-M2 antibody interfered with the HA-M2 association, which is important for efficient budding of progeny virus particles from infected cells. The antiviral activity was IAV strain dependent despite the similar binding capacity of the antibody to M2, and, interestingly, HA was involved in susceptibility to the antibody. Our data provide a novel mechanism underlying antiviral activity of M2-specific antibodies.</jats:p>

A Novel Mechanism Underlying Antiviral Activity of an Influenza Virus M2-Specific Antibody

Search this article

Description

Journal

References(54)*help

Related Projects

Keywords

Details 詳細情報について

Export

Report a problem