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dc.contributor.authorZmora, Pawel
dc.contributor.authorHoffmann, Markus
dc.contributor.authorKollmus, Heike
dc.contributor.authorMoldenhauer, Anna-Sophie
dc.contributor.authorDanov, Olga
dc.contributor.authorBraun, Armin
dc.contributor.authorWinkler, Michael
dc.contributor.authorSchughart, Klaus
dc.contributor.authorPöhlmann, Stefan
dc.date.accessioned2018-09-24T12:46:44Z
dc.date.available2018-09-24T12:46:44Z
dc.date.issued2018-09-07
dc.identifier.issn1083-351X
dc.identifier.pmid29976755
dc.identifier.doi10.1074/jbc.RA118.001273
dc.identifier.urihttp://hdl.handle.net/10033/621492
dc.description.abstractThe influenza virus hemagglutinin (HA) facilitates viral entry into target cells. Cleavage of HA by host cell proteases is essential for viral infectivity, and the responsible enzymes are potential targets for antiviral intervention. The type II transmembrane serine protease (TTSP) TMPRSS2 has been identified as an HA activator in cell culture and in the infected host. However, it is less clear whether TMPRSS2-related enzymes can also activate HA for spread in target cells. Moreover, the activity of cellular serine protease inhibitors against HA-activating TTSPs is poorly understood. Here, we show that TMPRSS11A, another member of the TTSP family, cleaves and activates the influenza A virus (FLUAV) HA and the Middle East respiratory syndrome coronavirus spike protein (MERS-S). Moreover, we demonstrate that TMPRSS11A is expressed in murine tracheal epithelium, which is a target of FLUAV infection, and in human trachea, suggesting that the protease could support FLUAV spread in patients. Finally, we show that HA activation by the TMPRSS11A-related enzymes human airway tryptase and DESC1, but not TMPRSS11A itself, is blocked by the cellular serine protease inhibitor hepatocyte growth factor activator inhibitor type-1 (HAI-1). Our results suggest that TMPRSS11A could promote FLUAV spread in target cells and that HA-activating TTSPs exhibit differential sensitivity to blockade by cellular serine protease inhibitors.en_US
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectTMPRSS11Aen_US
dc.subjectinfluenza virusen_US
dc.subjectproteaseen_US
dc.subjectprotease inhibitoren_US
dc.subjectvirologyen_US
dc.subjectvirus entryen_US
dc.titleTMPRSS11A activates the influenza A virus hemagglutinin and the MERS coronavirus spike protein and is insensitive against blockade by HAI-1.en_US
dc.typeArticleen_US
dc.contributor.departmentHelmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstr. 7, 38124 Braunschweig, Germany.en_US
dc.source.journaltitleThe Journal of biological chemistry


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Attribution-NonCommercial-ShareAlike 3.0 United States
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