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The host protease TMPRSS2 plays a major role in in vivo replication of emerging H7N9 and seasonal influenza viruses.

Identifieur interne : 001A51 ( Main/Exploration ); précédent : 001A50; suivant : 001A52

The host protease TMPRSS2 plays a major role in in vivo replication of emerging H7N9 and seasonal influenza viruses.

Auteurs : Kouji Sakai [Japon] ; Yasushi Ami ; Maino Tahara ; Toru Kubota ; Masaki Anraku ; Masako Abe ; Noriko Nakajima ; Tsuyoshi Sekizuka ; Kazuya Shirato ; Yuriko Suzaki ; Akira Ainai ; Yuichiro Nakatsu ; Kazuhiko Kanou ; Kazuya Nakamura ; Tadaki Suzuki ; Katsuhiro Komase ; Eri Nobusawa ; Katsumi Maenaka ; Makoto Kuroda ; Hideki Hasegawa ; Yoshihiro Kawaoka [États-Unis] ; Masato Tashiro ; Makoto Takeda

Source :

RBID : pubmed:24600012

Descripteurs français

English descriptors

Abstract

Proteolytic cleavage of the hemagglutinin (HA) protein is essential for influenza A virus (IAV) to acquire infectivity. This process is mediated by a host cell protease(s) in vivo. The type II transmembrane serine protease TMPRSS2 is expressed in the respiratory tract and is capable of activating a variety of respiratory viruses, including low-pathogenic (LP) IAVs possessing a single arginine residue at the cleavage site. Here we show that TMPRSS2 plays an essential role in the proteolytic activation of LP IAVs, including a recently emerged H7N9 subtype, in vivo. We generated TMPRSS2 knockout (KO) mice. The TMPRSS2 KO mice showed normal reproduction, development, and growth phenotypes. In TMPRSS2 KO mice infected with LP IAVs, cleavage of HA was severely impaired, and consequently, the majority of LP IAV progeny particles failed to gain infectivity, while the viruses were fully activated proteolytically in TMPRSS2+/+ wild-type (WT) mice. Accordingly, in contrast to WT mice, TMPRSS2 KO mice were highly tolerant of challenge infection by LP IAVs (H1N1, H3N2, and H7N9) with ≥1,000 50% lethal doses (LD50) for WT mice. On the other hand, a high-pathogenic H5N1 subtype IAV possessing a multibasic cleavage site was successfully activated in the lungs of TMPRSS2 KO mice and killed these mice, as observed for WT mice. Our results demonstrate that recently emerged H7N9 as well as seasonal IAVs mainly use the specific protease TMPRSS2 for HA cleavage in vivo and, thus, that TMPRSS2 expression is essential for IAV replication in vivo.

DOI: 10.1128/JVI.03677-13
PubMed: 24600012


Affiliations:


Links toward previous steps (curation, corpus...)


Le document en format XML

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<term>Host-Pathogen Interactions</term>
<term>Influenza A Virus, H1N1 Subtype (physiology)</term>
<term>Influenza A Virus, H3N2 Subtype (physiology)</term>
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<term>Mice, Knockout</term>
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<term>Orthomyxoviridae Infections (virology)</term>
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<term>Serine Endopeptidases (metabolism)</term>
<term>Survival Analysis</term>
<term>Virus Replication</term>
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<term>Analyse de survie</term>
<term>Animaux</term>
<term>Dose létale 50</term>
<term>Femelle</term>
<term>Glycoprotéine hémagglutinine du virus influenza (métabolisme)</term>
<term>Infections à Orthomyxoviridae (anatomopathologie)</term>
<term>Infections à Orthomyxoviridae (virologie)</term>
<term>Interactions hôte-pathogène</term>
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<term>Serine endopeptidases (métabolisme)</term>
<term>Souris</term>
<term>Souris de lignée C57BL</term>
<term>Souris knockout</term>
<term>Sous-type H1N1 du virus de la grippe A (physiologie)</term>
<term>Sous-type H3N2 du virus de la grippe A (physiologie)</term>
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<term>Sous-type H7N9 du virus de la grippe A (physiologie)</term>
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<term>Serine Endopeptidases</term>
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<term>Hemagglutinin Glycoproteins, Influenza Virus</term>
<term>Serine Endopeptidases</term>
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<term>Infections à Orthomyxoviridae</term>
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<term>Serine endopeptidases</term>
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<term>Glycoprotéine hémagglutinine du virus influenza</term>
<term>Serine endopeptidases</term>
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<term>Orthomyxoviridae Infections</term>
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<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr">
<term>Sous-type H1N1 du virus de la grippe A</term>
<term>Sous-type H3N2 du virus de la grippe A</term>
<term>Sous-type H5N1 du virus de la grippe A</term>
<term>Sous-type H7N9 du virus de la grippe A</term>
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<keywords scheme="MESH" qualifier="physiology" xml:lang="en">
<term>Influenza A Virus, H1N1 Subtype</term>
<term>Influenza A Virus, H3N2 Subtype</term>
<term>Influenza A Virus, H5N1 Subtype</term>
<term>Influenza A Virus, H7N9 Subtype</term>
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<term>Infections à Orthomyxoviridae</term>
<term>Poumon</term>
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<term>Lung</term>
<term>Orthomyxoviridae Infections</term>
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<term>Animals</term>
<term>Disease Models, Animal</term>
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<term>Host-Pathogen Interactions</term>
<term>Lethal Dose 50</term>
<term>Mice</term>
<term>Mice, Inbred C57BL</term>
<term>Mice, Knockout</term>
<term>Survival Analysis</term>
<term>Virus Replication</term>
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<term>Animaux</term>
<term>Dose létale 50</term>
<term>Femelle</term>
<term>Interactions hôte-pathogène</term>
<term>Modèles animaux de maladie humaine</term>
<term>Réplication virale</term>
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<front>
<div type="abstract" xml:lang="en">Proteolytic cleavage of the hemagglutinin (HA) protein is essential for influenza A virus (IAV) to acquire infectivity. This process is mediated by a host cell protease(s) in vivo. The type II transmembrane serine protease TMPRSS2 is expressed in the respiratory tract and is capable of activating a variety of respiratory viruses, including low-pathogenic (LP) IAVs possessing a single arginine residue at the cleavage site. Here we show that TMPRSS2 plays an essential role in the proteolytic activation of LP IAVs, including a recently emerged H7N9 subtype, in vivo. We generated TMPRSS2 knockout (KO) mice. The TMPRSS2 KO mice showed normal reproduction, development, and growth phenotypes. In TMPRSS2 KO mice infected with LP IAVs, cleavage of HA was severely impaired, and consequently, the majority of LP IAV progeny particles failed to gain infectivity, while the viruses were fully activated proteolytically in TMPRSS2+/+ wild-type (WT) mice. Accordingly, in contrast to WT mice, TMPRSS2 KO mice were highly tolerant of challenge infection by LP IAVs (H1N1, H3N2, and H7N9) with ≥1,000 50% lethal doses (LD50) for WT mice. On the other hand, a high-pathogenic H5N1 subtype IAV possessing a multibasic cleavage site was successfully activated in the lungs of TMPRSS2 KO mice and killed these mice, as observed for WT mice. Our results demonstrate that recently emerged H7N9 as well as seasonal IAVs mainly use the specific protease TMPRSS2 for HA cleavage in vivo and, thus, that TMPRSS2 expression is essential for IAV replication in vivo.</div>
</front>
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<li>Japon</li>
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<name sortKey="Nakatsu, Yuichiro" sort="Nakatsu, Yuichiro" uniqKey="Nakatsu Y" first="Yuichiro" last="Nakatsu">Yuichiro Nakatsu</name>
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<name sortKey="Sekizuka, Tsuyoshi" sort="Sekizuka, Tsuyoshi" uniqKey="Sekizuka T" first="Tsuyoshi" last="Sekizuka">Tsuyoshi Sekizuka</name>
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<name sortKey="Tahara, Maino" sort="Tahara, Maino" uniqKey="Tahara M" first="Maino" last="Tahara">Maino Tahara</name>
<name sortKey="Takeda, Makoto" sort="Takeda, Makoto" uniqKey="Takeda M" first="Makoto" last="Takeda">Makoto Takeda</name>
<name sortKey="Tashiro, Masato" sort="Tashiro, Masato" uniqKey="Tashiro M" first="Masato" last="Tashiro">Masato Tashiro</name>
</noCountry>
<country name="Japon">
<region name="Région de Kantō">
<name sortKey="Sakai, Kouji" sort="Sakai, Kouji" uniqKey="Sakai K" first="Kouji" last="Sakai">Kouji Sakai</name>
</region>
</country>
<country name="États-Unis">
<region name="Wisconsin">
<name sortKey="Kawaoka, Yoshihiro" sort="Kawaoka, Yoshihiro" uniqKey="Kawaoka Y" first="Yoshihiro" last="Kawaoka">Yoshihiro Kawaoka</name>
</region>
</country>
</tree>
</affiliations>
</record>

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   |texte=   The host protease TMPRSS2 plays a major role in in vivo replication of emerging H7N9 and seasonal influenza viruses.
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Data generation: Mon Apr 20 23:26:43 2020. Site generation: Sat Mar 27 09:06:09 2021