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Vaccine2005; 23(36); 4541-4551; doi: 10.1016/j.vaccine.2005.03.048

Equine interferon gamma synthesis in lymphocytes after in vivo infection and in vitro stimulation with EHV-1.

Abstract: Equine cytotoxic T lymphocyte (CTL) responses to equine herpesvirus-1 (EHV-1) are well characterised but little is known about the cytokine response after infection or vaccination. EHV-1 is common in horses and infects lymphocytes in vivo. This virus was used as a model to measure the synthesis of interferon gamma (IFN-gamma) by equine peripheral blood mononuclear cells (PBMC) after in vivo infection and/or in vitro stimulation with EHV-1. Both flow cytometry and ELISPOT assays were used to quantify equine IFN-gamma using a mouse anti-bovine IFN-gamma monoclonal antibody (clone CC302; shown to cross-react with recombinant equine IFN-gamma) and a rabbit anti-canine IFN-gamma polyclonal antibody. The percentage of PBMC synthesising IFN-gamma after in vitro stimulation with EHV-1 increased with age. In yearlings infected experimentally with EHV-1, PBMC showed two peaks of IFN-gamma synthesis, 11 and 56 days after infection. The IFN-gamma synthesis was principally associated with CD8(+) cells. The patterns of IFN-gamma synthesis detected by intracellular IFN-gamma staining or ELISPOT were compared with CTL data and shown to be similar. These methods were also applied successfully to frozen samples of PBMC. Measurement of equine IFN-gamma using these simple techniques can now be applied to future studies on protective cellular immune responses following virus infection and/or vaccination of horses.
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Publication Date: 2005-05-26 PubMed ID: 15913852DOI: 10.1016/j.vaccine.2005.03.048Google 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 research study focuses on the response of the immune system—specifically the production of Interferon gamma (IFN-gamma)—of horses to equine herpesvirus-1 (EHV-1). The response patterns post-infection or post-vaccination were analyzed to gain a deeper understanding of equine immune responses.

Detailed Summary of the Research Article

  • In this study, the researchers presented anothorough analysis of the response of equine immune cells, specifically cytotoxic T cells, to equine herpesvirus-1 (EHV-1).
  • EHV-1 is a common virus in horses and affects lymphocytes, a type of immune cell, in horses. This research provides insights into the production of Interferon gamma (IFN-gamma), a key protein involved in immune responses, by horse immune cells in response to EHV-1.
  • The team used EHV-1 as a model to track the production synthesis of IFN-gamma by equine peripheral blood mononuclear cells (PBMC)—a type of immune cell—after they were infected or stimulated with EHV-1 in lab conditions.

    • Methods and Findings

    • The researchers applied two different procedures—flow cytometry and ELISPOT assays—to quantify equine IFN-gamma. They relied on antibodies that have been demonstrated to react with IFN-gamma from other animals.
    • The research revealed that the percentage of PBMCs producing IFN-gamma after in vitro EHV-1 stimulation increased with the horse’s age. Yearlings (young horses) experimentally infected with EHV-1 showed two peaks of IFN-gamma synthesis—11 and 56 days after the infection. The synthesis was primarily linked to a sub-type of T cells, CD8+ cells.
    • The patterns identified directly corresponded with the cytotoxic T cell response data previously reported. This implies that IFN-gamma plays a critical role in immune system responses to EHV-1 in horses, as it does in other species.

    Implications of the Research

    • The research provides crucial insights into the equine immune response, particularly the role IFN-gamma plays following virus infection or vaccination.
    • Understanding these patterns can help develop new or enhanced strategies for equine disease prevention or treatment, particularly for viral diseases such as EHV-1.
    • Scientists can apply the simple techniques used to measure equine IFN-gamma in this study to future research on protective cellular immune responses. This study lays the groundwork for investigations into how horses and potentially other species respond to virus infection and/or vaccination.

Cite This Article

APA
Paillot R, Daly JM, Juillard V, Minke JM, Hannant D, Kydd JH. (2005). Equine interferon gamma synthesis in lymphocytes after in vivo infection and in vitro stimulation with EHV-1. Vaccine, 23(36), 4541-4551. https://doi.org/10.1016/j.vaccine.2005.03.048

Publication

Vaccine
ISSN: 0264-410X
NlmUniqueID: 8406899
Country: Netherlands
Language: English
Volume: 23
Issue: 36
Pages: 4541-4551

Researcher Affiliations

Paillot, R
  • Animal Health Trust, Centre for Preventive Medicine, Lanwades Park, Newmarket, Suffolk CB8 7UU, UK. romain.paillot@aht.org.uk
Daly, J M
    Juillard, V
      Minke, J M
        Hannant, D
          Kydd, J H

            MeSH Terms

            • Age Factors
            • Animals
            • Cryopreservation
            • Herpesviridae Infections / immunology
            • Herpesviridae Infections / prevention & control
            • Herpesviridae Infections / veterinary
            • Herpesvirus 1, Equid / immunology
            • Horse Diseases / immunology
            • Horse Diseases / prevention & control
            • Horses
            • Interferon-gamma / biosynthesis
            • Leukocytes, Mononuclear / immunology
            • Lymphocytes / immunology
            • Male
            • T-Lymphocytes, Cytotoxic / immunology

            Citations

            This article has been cited 17 times.
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