Home Acta Virologica 2013 Acta Virologica Vol.57, No.2 p.247-256, 2013

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Founded: 1957
ISSN 0001-723X
E-ISSN 1336-2305

Published in English

Impact Factor = 1.82

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Acta Virologica Vol.57, No.2 p.247-256, 2013

Title: HA2 glycopolypeptide of influenza A virus and antiviral immunity
Author: E. Varečková, V. Mucha, F. Kostolanský

Abstract: Influenza A viruses (IAVs) cause acute respiratory infections in humans against which an effective prevention has not yet been developed due to their high variability and broad host specificity. The permanent threat of arising new influenza pandemic is represented by avian viruses which after their interspecies transmission can cause a disease with a devastating impact on humans lacking the specific immunity. Since the current vaccines inducing virus-neutralizing (VN) antibodies are targeted at a variable globular part of hemagglutinin (HA), their efficacy is limited and they need permanent updating. On the other hand, conserved IAV antigens such as proton channel M2, membrane protein M1 or nucleoprotein (NP) do not induce VN antibodies, but they do induce heterosubtypic protection resulting in the reduction of virus replication and an improved recovery from the disease. From this point of view recent attention has also been focused on the conserved part of HA, its HA2 glycoprotein (HA2). The main aspects revealing a contribution of HA2 gp to protective immunity are discussed in this review.

Keywords: influenza A infection; HA2 glycopolypeptide; immune protection; monoclonal antibodies
Year: 2013, Volume: 57, Issue: 2 Page From: 247, Page To: 256

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