Key result
Vaccination with the postfusion hMPV B2 F protein generated a balanced Th1/Th2 response and targeted two previously discovered neutralizing epitopes.
Why the study?
Human metapneumovirus is an important cause of viral respiratory disease, prompting investigation into the postfusion hMPV F protein structure, receptor binding, and immunogenicity using a homogenous conformation.
The structural and immunogenic characterization of the postfusion hMPV F protein provides foundational knowledge for vaccine development against human metapneumovirus.
Supports advancing postfusion hMPV F for vaccine candidates; extends epitope data but leaves open human translation.
Human metapneumovirus (hMPV) is an important cause of viral respiratory disease. In this paper, we report the X-ray crystal structure of the hMPV fusion (F) protein in the postfusion conformation from genotype B. We also assessed binding of the hMPV F protein to heparin and heparan sulfate, a previously reported receptor for the hMPV F protein. Furthermore, we determined the immunogenicity and protective efficacy of postfusion hMPV B2 F protein, which is the first study using a homogenous conformation of the protein. Antibodies generated in response to vaccination give a balanced Th1/Th2 response and target two previously discovered neutralizing epitopes.
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Huang et al. (2021) studied Human metapneumovirus (hMPV). Postfusion hMPV B2 F protein was evaluated on Immunogenicity and protective efficacy. Vaccination with the postfusion hMPV B2 F protein generated a balanced Th1/Th2 response and targeted two previously discovered neutralizing epitopes.
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