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J Med Virol. 2019 Jan 24. doi: 10.1002/jmv.25408. [Epub ahead of print]
Establishment of Sandwich ELISA for Detecting the H7 Subtype Influenza A Virus.
Chen L1,2,3, Ruan F1,2,3, Sun Y2, Chen H3, Liu M3, Zhou J2, Qin K2.
Author information
Abstract
Avian H7N9 subtype influenza virus infects human with high case-fatality rate since it emerged in 2013. Although the vaccination has been rapidly employed in poultry due to the emergence of highly pathogenic strain, this virus remains prevalent in this region. Thus, rapid diagnosis both in poultry and human clinic is critical important for the control and prevention of H7N9 infection. In this study, a batch of H7 subtype specific monoclonal antibodies (mAb) were developed and a pair of mAb, 2B6 and 5E9, were used to establish a double-antibody sandwich ELISA to quantify H7 protein and detect influenza A virus baring H7 subtype HA. The lowest detection limit for the recombinant H7 protein was 10ng/ml and 0.5HAU/50μl of A/Guangdong/17SF003/2016(H7N9), 2HAU/50μl of A/Netherlands/219/2003(H7N7) and A/Anhui/1/2013(H7N9) for live virus, respectively. The ELISA could not only detect the prevailing H7N9 virus, but also antigenic drift H7 subtype viruses, showing excellent sensitivity and high specificity. Hence, it could serve as a valuable approach to diagnose H7 subtype virus which showed great potential to cause pandemic, as well as antigen quantification. This article is protected by copyright. All rights reserved.
This article is protected by copyright. All rights reserved.
KEYWORDS:
ELISA; H7 influenza; hemagglutinin; monoclonal antibody
PMID: 30680746 DOI: 10.1002/jmv.25408
Establishment of Sandwich ELISA for Detecting the H7 Subtype Influenza A Virus.
Chen L1,2,3, Ruan F1,2,3, Sun Y2, Chen H3, Liu M3, Zhou J2, Qin K2.
Author information
Abstract
Avian H7N9 subtype influenza virus infects human with high case-fatality rate since it emerged in 2013. Although the vaccination has been rapidly employed in poultry due to the emergence of highly pathogenic strain, this virus remains prevalent in this region. Thus, rapid diagnosis both in poultry and human clinic is critical important for the control and prevention of H7N9 infection. In this study, a batch of H7 subtype specific monoclonal antibodies (mAb) were developed and a pair of mAb, 2B6 and 5E9, were used to establish a double-antibody sandwich ELISA to quantify H7 protein and detect influenza A virus baring H7 subtype HA. The lowest detection limit for the recombinant H7 protein was 10ng/ml and 0.5HAU/50μl of A/Guangdong/17SF003/2016(H7N9), 2HAU/50μl of A/Netherlands/219/2003(H7N7) and A/Anhui/1/2013(H7N9) for live virus, respectively. The ELISA could not only detect the prevailing H7N9 virus, but also antigenic drift H7 subtype viruses, showing excellent sensitivity and high specificity. Hence, it could serve as a valuable approach to diagnose H7 subtype virus which showed great potential to cause pandemic, as well as antigen quantification. This article is protected by copyright. All rights reserved.
This article is protected by copyright. All rights reserved.
KEYWORDS:
ELISA; H7 influenza; hemagglutinin; monoclonal antibody
PMID: 30680746 DOI: 10.1002/jmv.25408