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Title: Structural basis for antibody cross-neutralization of respiratory syncytial virus and human metapneumovirus

Journal Article · · Nature Microbiology

Respiratory syncytial virus (RSV) and human metapneumovirus (HMPV) are two closely related viruses that cause bronchiolitis and pneumonia in infants and the elderly1, with a significant health burden2–6. There are no licensed vaccines or small-molecule antiviral treatments specific to these two viruses at present. A humanized murine monoclonal antibody (palivizumab) is approved to treat high-risk infants for RSV infection7,8, but other treatments, as well as vaccines, for both viruses are still in development. Recent epidemiological modelling suggests that cross-immunity between RSV, HMPV and human parainfluenzaviruses may contribute to their periodic outbreaks9, suggesting that a deeper understanding of host immunity to these viruses may lead to enhanced strategies for their control. Cross-reactive neutralizing antibodies to the RSV and HMPV fusion (F) proteins have been identified10,11. Here, we examine the structural basis for cross-reactive antibody binding to RSV and HMPV F protein by two related, independently isolated antibodies, MPE8 and 25P13. We solved the structure of the MPE8 antibody bound to RSV F protein and identified the 25P13 antibody from an independent blood donor. Our results indicate that both antibodies use germline residues to interact with a conserved surface on F protein that could guide the emergence of cross-reactivity. The induction of similar cross-reactive neutralizing antibodies using structural vaccinology approaches could enhance intrinsic cross-immunity to these paramyxoviruses and approaches to controlling recurring outbreaks.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
GM-61050; AI-23173
OSTI ID:
1438923
Journal Information:
Nature Microbiology, Vol. 2, Issue 4; ISSN 2058-5276
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 53 works
Citation information provided by
Web of Science

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Cited By (11)

Passive immunotherapy of viral infections: 'super-antibodies' enter the fray journal January 2018
Nitazoxanide inhibits paramyxovirus replication by targeting the Fusion protein folding: role of glycoprotein-specific thiol oxidoreductase ERp57 journal July 2018
An Adjuvanted, Postfusion F Protein–Based Vaccine Did Not Prevent Respiratory Syncytial Virus Illness in Older Adults journal September 2017
A proof of concept for structure-based vaccine design targeting RSV in humans journal August 2019
A Potent Neutralizing Site III-Specific Human Antibody Neutralizes Human Metapneumovirus In Vivo journal July 2019
Human antibody recognition of antigenic site IV on Pneumovirus fusion proteins journal February 2018
In-Depth Analysis of Human Neonatal and Adult IgM Antibody Repertoires journal February 2018
The epidemiology and severity of respiratory viral infections in a tropical country: Ecuador, 2009–2016 journal May 2019
Pre-fusion RSV F strongly boosts pre-fusion specific neutralizing responses in cattle pre-exposed to bovine RSV journal October 2017
Crystal Structure and Immunogenicity of the DS-Cav1-Stabilized Fusion Glycoprotein From Respiratory Syncytial Virus Subtype B journal September 2019
Induction of Potent Neutralizing Antibody Responses by a Designed Protein Nanoparticle Vaccine for Respiratory Syncytial Virus text January 2019

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