Induction of CD95 (Fas) and Apoptosis in Respiratory Epithelial Cell Cultures Following Respiratory Syncytial Virus Infection

Respiratory syncytial virus (RSV) infection is associated with epithelial cell death and vigorous inflammation. In mouse models, and in immunosuppressed patients, CD8+T cells are necessary for RSV clearance.In vitro,RSV has been shown to induce expression of several proteins on the respiratory epith...

Full description

Saved in:
Bibliographic Details
Published in:Virology (New York, N.Y.) N.Y.), 1999-04, Vol.257 (1), p.198-207
Main Authors: O'Donnell, D.R., Milligan, L., Stark, J.M.
Format: Article
Language:English
Subjects:
Animals
apoptosis
Apoptosis - immunology
CD95
Cells, Cultured
Cercopithecus aethiops
Epithelial Cells - metabolism
Fas
fas Receptor - biosynthesis
fas Receptor - genetics
fas Receptor - immunology
Flow Cytometry
Human respiratory syncytial virus
Humans
Intercellular Adhesion Molecule-1 - biosynthesis
Intercellular Adhesion Molecule-1 - genetics
Mice
NF-IL6
Polymerase Chain Reaction
Promoter Regions, Genetic
Respiratory syncytial virus
Respiratory Syncytial Virus Infections - immunology
Respiratory Syncytial Viruses
RNA, Messenger - metabolism
Transcription, Genetic
Vero Cells
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Respiratory syncytial virus (RSV) infection is associated with epithelial cell death and vigorous inflammation. In mouse models, and in immunosuppressed patients, CD8+T cells are necessary for RSV clearance.In vitro,RSV has been shown to induce expression of several proteins on the respiratory epithelial cell, including RSV proteins, ICAM-1, and MHC class I, that can potentially interact with CD8+T cells in initiating apoptosis of the target cell. One mechanism of T-cell-directed cell death is the interaction of FasL on the CD8+T lymphocytes and Fas expressed on the target cell. In order to determine the ability of RSV to induce Fas on the respiratory epithelium, we studied the RSV infection of a human respiratory epithelial cell line (A549)in vitro.Fas mRNA and protein levels are increased two-to-fourfold following RSV infection, and transcriptional upregulation of Fas was demonstrated using promoter/reporter gene constructs. RSV infection directly resulted in cellular apoptosis, and the frequency of apoptotic cells was further increased by cross-linking with antibodies to Fas. These data demonstrate that RSV infection induces cellular apoptosis and suggest that interactions of surface Fas with T cells may further augment this processin vivo.
ISSN:0042-6822
1096-0341
DOI:10.1006/viro.1999.9650