The ER-Golgi transport of influenza virus through NS1-Sec13 association during virus replication

ABSTRACT Influenza A virus is a respiratory virus that can cause complications such as acute bronchitis and secondary bacterial pneumonia. Drug therapies and vaccines are available against influenza, albeit limited by drug resistance and the non-universal vaccine administration. Hence there is a nee...

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Main Authors: Sonja C. J. H. Chua, Jianzhou Cui, Karishma Sachaphibulkij, Isabelle Siang Ling Tan, Hui Qing Tan, Hong Meng Lim, David Engelberg, Lina H. K. Lim
Format: Article
Language:English
Published: American Society for Microbiology 2024-01-01
Series:Microbiology Spectrum
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Online Access:https://journals.asm.org/doi/10.1128/spectrum.02609-23
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author Sonja C. J. H. Chua
Jianzhou Cui
Karishma Sachaphibulkij
Isabelle Siang Ling Tan
Hui Qing Tan
Hong Meng Lim
David Engelberg
Lina H. K. Lim
author_facet Sonja C. J. H. Chua
Jianzhou Cui
Karishma Sachaphibulkij
Isabelle Siang Ling Tan
Hui Qing Tan
Hong Meng Lim
David Engelberg
Lina H. K. Lim
author_sort Sonja C. J. H. Chua
collection DOAJ
description ABSTRACT Influenza A virus is a respiratory virus that can cause complications such as acute bronchitis and secondary bacterial pneumonia. Drug therapies and vaccines are available against influenza, albeit limited by drug resistance and the non-universal vaccine administration. Hence there is a need for host-targeted therapies against influenza to provide an effective alternative therapeutic target. Sec13 was identified as a novel host interactor of influenza. As Sec13 is a member of the nuclear pore complex and coat protein complex II (COPII) vesicles, localization of both Sec13 and non-structural protein 1 (NS1) in the nucleus, endoplasmic reticulum (ER), COPII vesicles (ER-to-Golgi transport), and Golgi was studied during infection. Sec13 is associated with ER, COPII, and Golgi in infected lung epithelial cells and not the nucleus during PR8 infection. This observation would imply the functional role of Sec13 in the COPII vesicles (ER-to-Golgi transport). Moreover, the colocalization of NS1 and Sec13 were correlated at several time points of infection, indicating the function of Sec13 during influenza infection. Inhibiting the ER-to-Golgi transport and silencing Sec13 decreased viral titers, whereas overexpressing Sec13 increased viral titers. Hence, we propose that the ER-to-Golgi transport is an important pathway of viral replication and viral export, and specifically, Sec13 has a functional role in influenza replication and virulence. IMPORTANCE Influenza A virus is a respiratory virus that can cause complications such as acute bronchitis and secondary bacterial pneumonia. Drug therapies and vaccines are available against influenza, albeit limited by drug resistance and the non-universal vaccine administration. Hence there is a need for host-targeted therapies against influenza to provide an effective alternative therapeutic target. Sec13 was identified as a novel host interactor of influenza. Endoplasmic reticulum-to-Golgi transport is an important pathway of influenza virus replication and viral export. Specifically, Sec13 has a functional role in influenza replication and virulence.
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spelling doaj.art-da3b4fb358054634ad3e30135eb6c9a32024-01-11T14:04:37ZengAmerican Society for MicrobiologyMicrobiology Spectrum2165-04972024-01-0112110.1128/spectrum.02609-23The ER-Golgi transport of influenza virus through NS1-Sec13 association during virus replicationSonja C. J. H. Chua0Jianzhou Cui1Karishma Sachaphibulkij2Isabelle Siang Ling Tan3Hui Qing Tan4Hong Meng Lim5David Engelberg6Lina H. K. Lim7Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, SingaporeDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, SingaporeDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, SingaporeDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, SingaporeDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, SingaporeDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, SingaporeCREATE-NUS-HUJ Molecular Mechanisms of Inflammatory Diseases Programme, National University of Singapore , Singapore, SingaporeDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, SingaporeABSTRACT Influenza A virus is a respiratory virus that can cause complications such as acute bronchitis and secondary bacterial pneumonia. Drug therapies and vaccines are available against influenza, albeit limited by drug resistance and the non-universal vaccine administration. Hence there is a need for host-targeted therapies against influenza to provide an effective alternative therapeutic target. Sec13 was identified as a novel host interactor of influenza. As Sec13 is a member of the nuclear pore complex and coat protein complex II (COPII) vesicles, localization of both Sec13 and non-structural protein 1 (NS1) in the nucleus, endoplasmic reticulum (ER), COPII vesicles (ER-to-Golgi transport), and Golgi was studied during infection. Sec13 is associated with ER, COPII, and Golgi in infected lung epithelial cells and not the nucleus during PR8 infection. This observation would imply the functional role of Sec13 in the COPII vesicles (ER-to-Golgi transport). Moreover, the colocalization of NS1 and Sec13 were correlated at several time points of infection, indicating the function of Sec13 during influenza infection. Inhibiting the ER-to-Golgi transport and silencing Sec13 decreased viral titers, whereas overexpressing Sec13 increased viral titers. Hence, we propose that the ER-to-Golgi transport is an important pathway of viral replication and viral export, and specifically, Sec13 has a functional role in influenza replication and virulence. IMPORTANCE Influenza A virus is a respiratory virus that can cause complications such as acute bronchitis and secondary bacterial pneumonia. Drug therapies and vaccines are available against influenza, albeit limited by drug resistance and the non-universal vaccine administration. Hence there is a need for host-targeted therapies against influenza to provide an effective alternative therapeutic target. Sec13 was identified as a novel host interactor of influenza. Endoplasmic reticulum-to-Golgi transport is an important pathway of influenza virus replication and viral export. Specifically, Sec13 has a functional role in influenza replication and virulence.https://journals.asm.org/doi/10.1128/spectrum.02609-23influenzaH1N1H3N2non-structural protein 1 (NS1)Sec13COPII
spellingShingle Sonja C. J. H. Chua
Jianzhou Cui
Karishma Sachaphibulkij
Isabelle Siang Ling Tan
Hui Qing Tan
Hong Meng Lim
David Engelberg
Lina H. K. Lim
The ER-Golgi transport of influenza virus through NS1-Sec13 association during virus replication
Microbiology Spectrum
influenza
H1N1
H3N2
non-structural protein 1 (NS1)
Sec13
COPII
title The ER-Golgi transport of influenza virus through NS1-Sec13 association during virus replication
title_full The ER-Golgi transport of influenza virus through NS1-Sec13 association during virus replication
title_fullStr The ER-Golgi transport of influenza virus through NS1-Sec13 association during virus replication
title_full_unstemmed The ER-Golgi transport of influenza virus through NS1-Sec13 association during virus replication
title_short The ER-Golgi transport of influenza virus through NS1-Sec13 association during virus replication
title_sort er golgi transport of influenza virus through ns1 sec13 association during virus replication
topic influenza
H1N1
H3N2
non-structural protein 1 (NS1)
Sec13
COPII
url https://journals.asm.org/doi/10.1128/spectrum.02609-23
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