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Airway proteases: an emerging drug target for influenza and other respiratory virus infections

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  • Airway proteases: an emerging drug target for influenza and other respiratory virus infections

    Curr Opin Virol. 2017 Apr 14;24:16-24. doi: 10.1016/j.coviro.2017.03.018. [Epub ahead of print]
    Airway proteases: an emerging drug target for influenza and other respiratory virus infections.

    Laporte M1, Naesens L2.
    Author information

    Abstract

    To enter into airway epithelial cells, influenza, parainfluenza- and coronaviruses rely on host cell proteases for activation of the viral protein involved in membrane fusion. One protease, transmembrane protease serine 2 (TMPRSS2) was recently proven to be crucial for hemagglutinin cleavage of some human influenza viruses. Since the catalytic sites of the diverse serine proteases linked to influenza, parainfluenza- and coronavirus activation are structurally similar, active site inhibitors of these airway proteases could have broad therapeutic applicability against multiple respiratory viruses. Alternatively, superior selectivity could be achieved with allosteric inhibitors of TMPRSS2 or another critical protease. Though still in its infancy, airway protease inhibition represents an attractive host-cell targeting approach to combat respiratory viruses such as influenza.
    Copyright ? 2017 The Authors. Published by Elsevier B.V. All rights reserved.


    PMID: 28414992 DOI: 10.1016/j.coviro.2017.03.018
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