Serveur d'exploration Stress et Covid

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BST2 inhibits infection of influenza A virus by promoting apoptosis of infected cells.

Identifieur interne : 000913 ( Main/Exploration ); précédent : 000912; suivant : 000914

BST2 inhibits infection of influenza A virus by promoting apoptosis of infected cells.

Auteurs : Eunbi Yi [Corée du Sud] ; Jinsoo Oh [Corée du Sud] ; Hye-Ri Kang [Corée du Sud] ; Moon Jung Song [Corée du Sud] ; Se-Ho Park [Corée du Sud]

Source :

RBID : pubmed:30594400

Descripteurs français

English descriptors

Abstract

BST2 is an antiviral factor that inhibits the release of enveloped virus at the plasma membrane via an unusual topology in which its N-terminal is in the cytosol while its C-terminal is anchored by glycophosphatidylinositol (GPI). BST2-deficient cells showed substantially higher release of virions than wild type cells. Influenza-infected BST2-deficient cells showed greatly reduced cytopathic effect (CPE) than wild type cells despite their generally robust virus production. This finding prompted us to determine whether BST2 was involved in the apoptotic process of virus-infected host cells. Our results revealed that BST2 might be involved in IRE1α-mediated ER stress pathway by increasing spliced form XBP-1. Consequently, levels of cytochrome C, caspase-3, caspase-9, and PARP as representative molecules of apoptosis were significantly increased in wild type cells than those in BST2-deficient cells. These results suggest that BST2 might participate in innate host defense by augmenting ER-stress-induced apoptotic signaling to inhibit the replication and spread of virus.

DOI: 10.1016/j.bbrc.2018.12.110
PubMed: 30594400


Affiliations:


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<term>Apoptosis (genetics)</term>
<term>Apoptosis (immunology)</term>
<term>Caspase 3 (genetics)</term>
<term>Caspase 3 (immunology)</term>
<term>Caspase 9 (genetics)</term>
<term>Caspase 9 (immunology)</term>
<term>Chlorocebus aethiops</term>
<term>Cytochromes c (genetics)</term>
<term>Cytochromes c (immunology)</term>
<term>Dogs</term>
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<term>Endoplasmic Reticulum (immunology)</term>
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<term>Endoplasmic Reticulum Stress (immunology)</term>
<term>Endoribonucleases (genetics)</term>
<term>Endoribonucleases (immunology)</term>
<term>GPI-Linked Proteins (genetics)</term>
<term>GPI-Linked Proteins (immunology)</term>
<term>Gene Expression Regulation</term>
<term>HEK293 Cells</term>
<term>Host-Pathogen Interactions (genetics)</term>
<term>Host-Pathogen Interactions (immunology)</term>
<term>Humans</term>
<term>Immunity, Innate</term>
<term>Influenza A Virus, H1N1 Subtype (genetics)</term>
<term>Influenza A Virus, H1N1 Subtype (immunology)</term>
<term>Madin Darby Canine Kidney Cells</term>
<term>Poly(ADP-ribose) Polymerases (genetics)</term>
<term>Poly(ADP-ribose) Polymerases (immunology)</term>
<term>Protein-Serine-Threonine Kinases (genetics)</term>
<term>Protein-Serine-Threonine Kinases (immunology)</term>
<term>Signal Transduction</term>
<term>Vero Cells</term>
<term>Virus Replication</term>
<term>X-Box Binding Protein 1 (genetics)</term>
<term>X-Box Binding Protein 1 (immunology)</term>
</keywords>
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<term>Apoptose (immunologie)</term>
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<term>Cellules Vero</term>
<term>Cellules rénales canines Madin-Darby</term>
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<term>Cytochromes c (immunologie)</term>
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<term>Poly(ADP-ribose) polymerases (immunologie)</term>
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<term>Protein-Serine-Threonine Kinases (immunologie)</term>
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<term>Poly(ADP-ribose) Polymerases</term>
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<term>Caspase 3</term>
<term>Caspase 9</term>
<term>Cytochromes c</term>
<term>Endoribonucleases</term>
<term>GPI-Linked Proteins</term>
<term>Poly(ADP-ribose) Polymerases</term>
<term>Protein-Serine-Threonine Kinases</term>
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<term>Apoptose</term>
<term>Caspase-3</term>
<term>Caspase-9</term>
<term>Cytochromes c</term>
<term>Endoribonucleases</term>
<term>Interactions hôte-pathogène</term>
<term>Poly(ADP-ribose) polymerases</term>
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<term>Apoptose</term>
<term>Caspase-3</term>
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<term>Cytochromes c</term>
<term>Endoribonucleases</term>
<term>Interactions hôte-pathogène</term>
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<term>Protein-Serine-Threonine Kinases</term>
<term>Protéine-1 liant la boite X</term>
<term>Protéines liées au GPI</term>
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<term>Endoplasmic Reticulum</term>
<term>Endoplasmic Reticulum Stress</term>
<term>Host-Pathogen Interactions</term>
<term>Influenza A Virus, H1N1 Subtype</term>
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<term>Animals</term>
<term>Chlorocebus aethiops</term>
<term>Dogs</term>
<term>Gene Expression Regulation</term>
<term>HEK293 Cells</term>
<term>Humans</term>
<term>Immunity, Innate</term>
<term>Madin Darby Canine Kidney Cells</term>
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<term>Cellules HEK293</term>
<term>Cellules Vero</term>
<term>Cellules rénales canines Madin-Darby</term>
<term>Chiens</term>
<term>Humains</term>
<term>Immunité innée</term>
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<term>Transduction du signal</term>
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<front>
<div type="abstract" xml:lang="en">BST2 is an antiviral factor that inhibits the release of enveloped virus at the plasma membrane via an unusual topology in which its N-terminal is in the cytosol while its C-terminal is anchored by glycophosphatidylinositol (GPI). BST2-deficient cells showed substantially higher release of virions than wild type cells. Influenza-infected BST2-deficient cells showed greatly reduced cytopathic effect (CPE) than wild type cells despite their generally robust virus production. This finding prompted us to determine whether BST2 was involved in the apoptotic process of virus-infected host cells. Our results revealed that BST2 might be involved in IRE1α-mediated ER stress pathway by increasing spliced form XBP-1. Consequently, levels of cytochrome C, caspase-3, caspase-9, and PARP as representative molecules of apoptosis were significantly increased in wild type cells than those in BST2-deficient cells. These results suggest that BST2 might participate in innate host defense by augmenting ER-stress-induced apoptotic signaling to inhibit the replication and spread of virus.</div>
</front>
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