Broadly Protective Neuraminidase-Based Influenza Vaccines and Monoclonal Antibodies: Target Epitopes and Mechanisms of Action

Neuraminidase (NA) is an important surface protein on influenza virions, playing an essential role in the viral life cycle and being a key target of the immune system. Despite the importance of NA-based immunity, current vaccines are focused on the hemagglutinin (HA) protein as the target for protec...

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Main Authors: Nada Abbadi, Jarrod J. Mousa
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/15/1/200
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author Nada Abbadi
Jarrod J. Mousa
author_facet Nada Abbadi
Jarrod J. Mousa
author_sort Nada Abbadi
collection DOAJ
description Neuraminidase (NA) is an important surface protein on influenza virions, playing an essential role in the viral life cycle and being a key target of the immune system. Despite the importance of NA-based immunity, current vaccines are focused on the hemagglutinin (HA) protein as the target for protective antibodies, and the amount of NA is not standardized in virion-based vaccines. Antibodies targeting NA are predominantly protective, reducing infection severity and viral shedding. Recently, NA-specific monoclonal antibodies have been characterized, and their target epitopes have been identified. This review summarizes the characteristics of NA, NA-specific antibodies, the mechanism of NA inhibition, and the recent efforts towards developing NA-based and NA-incorporating influenza vaccines.
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spelling doaj.art-de99ff1368414d0fabb1227295e097d02023-12-01T01:12:43ZengMDPI AGViruses1999-49152023-01-0115120010.3390/v15010200Broadly Protective Neuraminidase-Based Influenza Vaccines and Monoclonal Antibodies: Target Epitopes and Mechanisms of ActionNada Abbadi0Jarrod J. Mousa1Center for Vaccines and Immunology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USACenter for Vaccines and Immunology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USANeuraminidase (NA) is an important surface protein on influenza virions, playing an essential role in the viral life cycle and being a key target of the immune system. Despite the importance of NA-based immunity, current vaccines are focused on the hemagglutinin (HA) protein as the target for protective antibodies, and the amount of NA is not standardized in virion-based vaccines. Antibodies targeting NA are predominantly protective, reducing infection severity and viral shedding. Recently, NA-specific monoclonal antibodies have been characterized, and their target epitopes have been identified. This review summarizes the characteristics of NA, NA-specific antibodies, the mechanism of NA inhibition, and the recent efforts towards developing NA-based and NA-incorporating influenza vaccines.https://www.mdpi.com/1999-4915/15/1/200influenzaneuraminidaseuniversal influenza vaccineantibodiesmonoclonal antibodies
spellingShingle Nada Abbadi
Jarrod J. Mousa
Broadly Protective Neuraminidase-Based Influenza Vaccines and Monoclonal Antibodies: Target Epitopes and Mechanisms of Action
Viruses
influenza
neuraminidase
universal influenza vaccine
antibodies
monoclonal antibodies
title Broadly Protective Neuraminidase-Based Influenza Vaccines and Monoclonal Antibodies: Target Epitopes and Mechanisms of Action
title_full Broadly Protective Neuraminidase-Based Influenza Vaccines and Monoclonal Antibodies: Target Epitopes and Mechanisms of Action
title_fullStr Broadly Protective Neuraminidase-Based Influenza Vaccines and Monoclonal Antibodies: Target Epitopes and Mechanisms of Action
title_full_unstemmed Broadly Protective Neuraminidase-Based Influenza Vaccines and Monoclonal Antibodies: Target Epitopes and Mechanisms of Action
title_short Broadly Protective Neuraminidase-Based Influenza Vaccines and Monoclonal Antibodies: Target Epitopes and Mechanisms of Action
title_sort broadly protective neuraminidase based influenza vaccines and monoclonal antibodies target epitopes and mechanisms of action
topic influenza
neuraminidase
universal influenza vaccine
antibodies
monoclonal antibodies
url https://www.mdpi.com/1999-4915/15/1/200
work_keys_str_mv AT nadaabbadi broadlyprotectiveneuraminidasebasedinfluenzavaccinesandmonoclonalantibodiestargetepitopesandmechanismsofaction
AT jarrodjmousa broadlyprotectiveneuraminidasebasedinfluenzavaccinesandmonoclonalantibodiestargetepitopesandmechanismsofaction