Selective Engagement of FcγRIV by a M2e-Specific Single Domain Antibody Construct Protects Against Influenza A Virus Infection.
Amino Acid Sequence
Animals
Antibodies, Bispecific
/ chemistry
Antibodies, Viral
/ chemistry
Cell Line
Humans
Influenza A virus
/ immunology
Influenza, Human
/ immunology
Mice
Models, Molecular
Peptides
/ chemistry
Protein Conformation
Receptors, IgG
/ chemistry
Single-Domain Antibodies
/ chemistry
Structure-Activity Relationship
Viral Matrix Proteins
/ chemistry
Fcγ receptor
effector functions
influenza
matrix protein 2 ectodomain
single domain antibody
Journal
Frontiers in immunology
ISSN: 1664-3224
Titre abrégé: Front Immunol
Pays: Switzerland
ID NLM: 101560960
Informations de publication
Date de publication:
2019
2019
Historique:
received:
16
09
2019
accepted:
27
11
2019
entrez:
11
1
2020
pubmed:
11
1
2020
medline:
11
11
2020
Statut:
epublish
Résumé
Lower respiratory tract infections, such as infections caused by influenza A viruses, are a constant threat for public health. Antivirals are indispensable to control disease caused by epidemic as well as pandemic influenza A. We developed a novel anti-influenza A virus approach based on an engineered single-domain antibody (VHH) construct that can selectively recruit innate immune cells to the sites of virus replication. This protective construct comprises two VHHs. One VHH binds with nanomolar affinity to the conserved influenza A matrix protein 2 (M2) ectodomain (M2e). Co-crystal structure analysis revealed that the complementarity determining regions 2 and 3 of this VHH embrace M2e. The second selected VHH specifically binds to the mouse Fcγ Receptor IV (FcγRIV) and was genetically fused to the M2e-specific VHH, which resulted in a bi-specific VHH-based construct that could be efficiently expressed in
Identifiants
pubmed: 31921179
doi: 10.3389/fimmu.2019.02920
pmc: PMC6921966
doi:
Substances chimiques
Antibodies, Bispecific
0
Antibodies, Viral
0
FCGR3A protein, human
0
M2 protein, Influenza A virus
0
Peptides
0
Receptors, IgG
0
Single-Domain Antibodies
0
Viral Matrix Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
2920Informations de copyright
Copyright © 2019 De Vlieger, Hoffmann, Van Molle, Nerinckx, Van Hoecke, Ballegeer, Creytens, Remaut, Hengel, Schepens and Saelens.
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