Cited by 51Herpesvirus Infections and TreatmentsAnimal Virus Infections StudiesViral-associated cancers and disorders

In vitro reactivation of latent equid herpesvirus-1 from CD5+/CD8+ leukocytes indirectly by IL-2 or chorionic gonadotrophin.

Smith, D J, Iqbal, J, Edington, N, Purewal, A, Hamblin, A S·1998·Journal of General Virology

Abstract

IL-2 and equine chorionic gonadotrophin (eCG) initiated reactivation of equid herpesvirus-1 (EHV-1) from venous lymphocytes at a frequency of 1/10(-5). Indirect immunofluorescence showed that > 80% of virus-positive leukocytes were CD5+/CD8+ with the remaining 20% being CD5+/CD8-/CD4-. Cocultivation demonstrated that the reactivated virus was infectious. In addition, virus was reactivated in vitro from leukocytes of > 70% of horses by the mitogens phytohaemagglutinin (PHA) and pokeweed mitogen (PWM). Transfer of supernatants showed that IL-2 and eCG acted indirectly by causing the release of other mediators from adherent cells; these mediators then reactivated EHV-1 from T cells. Blocking experiments with anti-IL-2 showed that PWM and PHA acted via IL-2 but that eCG did not. This is the first clear definition of the lymphoid cells that harbour latent EHV-1 in vivo and correlates with current RT-PCR and in situ hybridization of latency-associated transcripts in lymphocytes. This method of reactivation in vitro can be used to detect horses carrying latent EHV-1 in vivo and also has the potential to dissect the sequence of events involved in reactivation in vitro.

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Crossref · 10.1099/0022-1317-79-12-2997

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39 of 39 references verified0 citation errors · 0 not checkable

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  • EHV-1 reactivates from CD8+ T lymphocytes upon mitogen stimulation in vitro.

    “An in vitro study showed that EHV-1 reactivates from CD8+ T lymphocytes upon mitogen stimulation (e.g., phytohaemagglutin ad pokeweed mitogen) (Smith et al., 1998).”

    From The Pathogenesis and Immune Evasive Mechanisms of Equine Herpesvirus Type 1 (2021) · cites this paper as Smith et al., 1998

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Authors
Smith, D. J., Iqbal, J., Edington, N., Purewal, A., & Hamblin, A. S.
Affiliations
Royal Veterinary College (GB)
Venue
Journal of General Virology
Published
1998-12-01
Volume
79
Issue
12
Pages
2997-3004
ISSN
  • 0022-1317 (ISSN-L)
  • 1465-2099
OpenAlex
W2105093420
Cited by
51
References
39
Citations by year
2023: 1 · 2022: 1 · 2021: 3 · 2020: 3 · 2019: 1 · 2018: 4 · 2016: 3 · 2015: 1 · 2014: 1 · 2013: 7 · 2012: 1
FWCI
1.74
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of General Virology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Herpesvirus Infections and Treatments
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
  • Health Sciences › Medicine › Oncology › Viral-associated cancers and disorders
Keywords
equine herpesvirus 1, viral latency, interleukin-2, equine chorionic gonadotropin, phytohemagglutinin, pokeweed mitogen, horses, latency-associated transcript
MeSH terms
Animals, Cells, Cultured, Herpesvirus 1, Equid, Chorionic Gonadotropin, Horses, Humans, Interleukin-2, Rabbits, Virus Activation, Polymerase Chain Reaction, Virus Latency, CD8-Positive T-Lymphocytes, CD5 Antigens

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