Melzi, E., Caporale, M., Rocchi, M., Martin, V., Gamino, V., di Provvido, A., Marruchella, G., Entrican, G., Sevilla, N. and Palmarini, M. (2016) Follicular dendritic cell disruption as a novel mechanism of virus-induced immunosuppression. Proceedings of the National Academy of Sciences of the United States of America, 113(41), E6238-E6247. (doi: 10.1073/pnas.1610012113) (PMID:27671646) (PMCID:PMC5068271)
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Abstract
Arboviruses cause acute diseases that increasingly affect global health. We used bluetongue virus (BTV) and its natural sheep host to reveal a previously uncharacterized mechanism used by an arbovirus to manipulate host immunity. Our study shows that BTV, similarly to other antigens delivered through the skin, is transported rapidly via the lymph to the peripheral lymph nodes. Here, BTV infects and disrupts follicular dendritic cells, hindering B-cell division in germinal centers, which results in a delayed production of high affinity and virus neutralizing antibodies. Moreover, the humoral immune response to a second antigen is also hampered in BTV-infected animals. Thus, an arbovirus can evade the host antiviral response by inducing an acute immunosuppression. Although transient, this immunosuppression occurs at the critical early stages of infection when a delayed host humoral immune response likely affects virus systemic dissemination and the clinical outcome of disease.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Rocchi, Dr Mara and Melzi, Miss Eleonora and Palmarini, Professor Massimo and Entrican, Professor Gary and Caporale, Dr Marco |
| Authors: | Melzi, E., Caporale, M., Rocchi, M., Martin, V., Gamino, V., di Provvido, A., Marruchella, G., Entrican, G., Sevilla, N., and Palmarini, M. |
| 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: | Proceedings of the National Academy of Sciences of the United States of America |
| Publisher: | National Academy of Sciences |
| ISSN: | 0027-8424 |
| ISSN (Online): | 1091-6490 |
| Published Online: | 26 September 2016 |
| Copyright Holders: | Copyright © 2016 National Academy of Sciences |
| First Published: | First published in Proceedings of the National Academy of Sciences of the United States of America 2016 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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