Abstract:
:Epitope characterization is critical for elucidating the mechanism of action of drug candidates. However, traditional high-resolution epitope mapping techniques are not well suited for screening numerous drug candidates recognizing a similar target. Here, we use Hydrogen-Deuterium Exchange Mass Spectrometry (HDX-MS) to explore the conformational impact of diverse drug molecules binding on Hemagglutinin (HA), the major surface antigen of influenza viruses. We optimized a semi-automated HDX-MS workflow to systematically probe distantly related HA subtypes in complex with 4 different drug candidates, ranging from a monoclonal antibody to a small synthetic peptide. This fast, cost-effective HDX-MS epitope mapping approach accurately determined the main antigenic site in all cases. Moreover, our studies reveal distinct changes in the local conformational dynamics of HA associated to the molecular mechanism of neutralization, establishing a marker for broad anti-HA activity. Taken together, these findings highlight the potential for HDX-MS epitope mapping-based screening to identify promising candidates against HA at early stages of drug discovery.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Puchades C,Kűkrer B,Diefenbach O,Sneekes-Vriese E,Juraszek J,Koudstaal W,Apetri Adoi
10.1038/s41598-019-41179-0subject
Has Abstractpub_date
2019-03-18 00:00:00pages
4735issue
1issn
2045-2322pii
10.1038/s41598-019-41179-0journal_volume
9pub_type
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