Beczkowski, P., Logan, N., McMonagle, E., Litster, A., Willett, B. J. and Hosie, M. J. (2015) An investigation of the breadth of neutralising antibody response in cats naturally infected with feline immunodeficiency virus. Journal of General Virology, 96(3), pp. 671-680. (doi: 10.1099/vir.0.071522-0) (PMID:25395594) (PMCID:PMC4336861)
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Abstract
Neutralising antibodies (NAbs) are believed to comprise an essential component of the protective immune response induced by vaccines against FIV and HIV infections. However, relatively little is known about the role of NAbs in controlling FIV infection and subsequent disease progression. Here we present studies examining the neutralisation of HIV-luciferase pseudotypes bearing homologous and heterologous FIV Envs (n=278) by sequential plasma samples collected at 6 month intervals from naturally infected cats (n=38) over a period of 18 months. We evaluated the breadth of the NAb response against non-recombinant homologous and heterologous clade A and clade B viral variants as well as recombinants and assessed the results, testing for evidence of an association between the potency of the NAb response and the duration of infection, CD4 T lymphocyte numbers, health status and survival times of the infected cats. Neutralisation profiles varied significantly between FIV infected cats and strong autologous neutralisation, assessed using luciferase based in vitro assays, did not correlate with the clinical outcome. No association was observed between strong NAb responses and either improved health status or increased survival time of infected animals, implying that other protective mechanisms are likely to be involved. Similarly, no correlation was observed between the development of autologous NAbs and the duration of infection. Furthermore, cross-neutralising antibodies were evident in only a small proportion (13%) of cats.
| Item Type: | Articles |
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| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Hosie, Professor Margaret and Willett, Professor Brian and Beczkowski, Dr Pawel and McMonagle, Mrs Linda and Logan, Miss Nicola |
| Authors: | Beczkowski, P., Logan, N., McMonagle, E., Litster, A., Willett, B. J., and Hosie, M. J. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity College of Medical Veterinary and Life Sciences > School of Infection & Immunity > Centre for Virus Research |
| Journal Name: | Journal of General Virology |
| Publisher: | Society for General Microbiology |
| ISSN: | 0022-1317 |
| ISSN (Online): | 1465-2099 |
| Copyright Holders: | Copyright © 2015 The Authors |
| First Published: | First published in Journal of General Virology 96(3):671-680 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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