Differential susceptibility of equine and mouse brain microvascular endothelial cells to equine herpesvirus 1 infection

Differential susceptibility of equine and mouse brain microvascular endothelial cells to equine... Equine herpesvirus 1 (EHV-1) shows endotheliotropism in the central nervous system (CNS) of infected horses. However, infection of endothelial cells has not been observed in the CNS of infected mice. To explore the basis for this difference in endotheliotropism, we compared the susceptibility of equine brain microvascular endothelial cells (EBMECs) and mouse brain microvascular endothelial cells (MBMECs) to EHV-1 infection. The kinetics of viral growth in EBMECs was typical of a fully productive infection whereas viral infection in MBMECs seemed to be nonproductive. Immunofluorescence microscopy using anti-EHV-1 polyclonal antibody demonstrated viral antigen in infected EBMECs, but not infected MBMECs. EHV-1 immediate early (IE), early (ICP0), and late (gB, gD and gK) transcripts were expressed in infected EBMECs. However, none of these genes was detected in infected MBMECs by reverse transcription-polymerase chain reaction. Electron microscopic examination at the stage of viral entry showed that viral particles were present within uncoated vesicles in the cytoplasm of EBMECs, but absent from those of MBMECs. These results suggest that viral entry is an important determinant of the susceptibility of EBMECs and MBMECs to EHV-1 infection. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Differential susceptibility of equine and mouse brain microvascular endothelial cells to equine herpesvirus 1 infection

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Publisher
Springer-Verlag
Copyright
Copyright © 2006 by Springer-Verlag/Wien
Subject
Biomedicine; Medical Microbiology; Infectious Diseases; Virology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-005-0653-3
Publisher site
See Article on Publisher Site

Abstract

Equine herpesvirus 1 (EHV-1) shows endotheliotropism in the central nervous system (CNS) of infected horses. However, infection of endothelial cells has not been observed in the CNS of infected mice. To explore the basis for this difference in endotheliotropism, we compared the susceptibility of equine brain microvascular endothelial cells (EBMECs) and mouse brain microvascular endothelial cells (MBMECs) to EHV-1 infection. The kinetics of viral growth in EBMECs was typical of a fully productive infection whereas viral infection in MBMECs seemed to be nonproductive. Immunofluorescence microscopy using anti-EHV-1 polyclonal antibody demonstrated viral antigen in infected EBMECs, but not infected MBMECs. EHV-1 immediate early (IE), early (ICP0), and late (gB, gD and gK) transcripts were expressed in infected EBMECs. However, none of these genes was detected in infected MBMECs by reverse transcription-polymerase chain reaction. Electron microscopic examination at the stage of viral entry showed that viral particles were present within uncoated vesicles in the cytoplasm of EBMECs, but absent from those of MBMECs. These results suggest that viral entry is an important determinant of the susceptibility of EBMECs and MBMECs to EHV-1 infection.

Journal

Archives of VirologySpringer Journals

Published: Apr 1, 2006

References

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