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Journal of virology1999; 73(12); 9843-9848; doi: 10.1128/JVI.73.12.9843-9848.1999

The equine herpesvirus 2 E1 open reading frame encodes a functional chemokine receptor.

Abstract: Several herpesviruses contain open reading frames (ORFs) that encode potential homologs of eucaryotic genes. Equine herpesvirus 2 (EHV-2) is a gammaherpesvirus related to other lymphotropic herpesviruses such as herpesvirus saimiri and Epstein-Barr virus. The E1 ORF of EHV-2, a G protein-coupled receptor homolog, shows 31 to 47% amino acid identity with known CC chemokine receptors. To investigate whether E1 may encode a functional receptor, we cloned the E1 ORF and expressed it in stably transfected cell lines. We report here the identification of the CC chemokine eotaxin as a functional ligand for the EHV-2 E1 receptor. Chemokines are likely to play a role in the regulation of immune functions in equine hosts during EHV-2 infection and, via interaction with E1, may affect viral replication and/or escape from immune responses.
Publication Date: 1999-11-13 PubMed ID: 10559296PubMed Central: PMC113033DOI: 10.1128/JVI.73.12.9843-9848.1999Google Scholar: Lookup
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  • Journal Article
  • Research Support
  • Non-U.S. Gov't

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This study explains how the E1 open reading frame (ORF) of Equine Herpesvirus 2 (EHV-2) codes for a functional chemokine receptor, playing a role in immune regulation during the viral infection.

About the Study

  • This research investigates EHV-2, a type of gammaherpesvirus closely related to lymphotropic viruses such as Herpesvirus saimiri and Epstein-Barr virus. These viruses affect the lymphatic system which is a crucial part of the immune system.
  • The research team focused on the E1 ORF of EHV-2, which shows a significant degree of amino acid identity with known CC chemokine receptors. In genetics, an open reading frame is a portion of the gene’s sequence that could potentially be translated into a protein.

The E1 ORF’s Role

  • The study sought to determine if the E1 ORF of EHV-2 codes for a functional receptor. To do so, the team cloned the E1 ORF and expressed it in stably transfected cell lines.
  • The study found that the E1 ORF does indeed code for a functional chemokine receptor, with the CC chemokine eotaxin discovered as a functional ligand for the EHV-2 E1 receptor. A ligand refers to a molecule that binds to another specific molecule, in this case, the E1 receptor.

Implications of the Findings

  • The research suggests that chemokines, including eotaxin, are likely playing a role in regulating immune functions in equine hosts that have an EHV-2 infection.
  • This indicates that the interaction between chemokines and the E1 receptor may influence viral replication and the host’s ability to evade immune responses, vital information for the development of possible future treatments or interventions for EHV-2.

Cite This Article

APA
Camarda G, Spinetti G, Bernardini G, Mair C, Davis-Poynter N, Capogrossi MC, Napolitano M. (1999). The equine herpesvirus 2 E1 open reading frame encodes a functional chemokine receptor. J Virol, 73(12), 9843-9848. https://doi.org/10.1128/JVI.73.12.9843-9848.1999

Publication

ISSN: 0022-538X
NlmUniqueID: 0113724
Country: United States
Language: English
Volume: 73
Issue: 12
Pages: 9843-9848

Researcher Affiliations

Camarda, G
  • Laboratorio di Patologia Vascolare, Istituto Dermopatico dell'Immacolata-Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy.
Spinetti, G
    Bernardini, G
      Mair, C
        Davis-Poynter, N
          Capogrossi, M C
            Napolitano, M

              MeSH Terms

              • Amino Acid Sequence
              • Animals
              • Cell Line
              • Cloning, Molecular
              • Gammaherpesvirinae / genetics
              • Gene Expression
              • Genes, Viral
              • Horses
              • Humans
              • Molecular Sequence Data
              • Open Reading Frames
              • Receptors, Chemokine / genetics
              • Receptors, Chemokine / metabolism
              • Receptors, Chemokine / physiology
              • Reverse Transcriptase Polymerase Chain Reaction
              • Sequence Homology, Amino Acid
              • Transfection
              • Viral Proteins / genetics
              • Viral Proteins / metabolism
              • Viral Proteins / physiology

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