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| Título: | Mucosal immunization against ovine lentivirus using PEI-DNA complexes and modified vaccinia Ankara encoding the gag and/or env genes |
Autor: | Reina, Ramsés CSIC ORCID ; Andrés, Ximena de CSIC; Solano Goñi, Cristina CSIC ORCID; Crespo, Helena CSIC; Glaria, Idoia CSIC ORCID ; Andrés, Damián F. de CSIC ORCID ; Amorena Zabalza, Beatriz CSIC ORCID ; Harkiss, Gordon D. | Palabras clave: | Sheep Mucosal DNA vaccination Lentivirus |
Fecha de publicación: | 18-ago-2008 | Editor: | Elsevier | Citación: | Vaccine 26: 4494-4505 (2008) | Resumen: | Sheep were immunized against Visna/Maedi virus (VMV) gag and/or env genes via the nasopharynx-associated lymphoid tissue (NALT) and lung using polyethylenimine (PEI)-DNA complexes and modified vaccinia Ankara, and challenged with live virus via the lung. env immunization enhanced humoral responses prior to but not after VMV challenge. Systemic T cell proliferative and cytotoxic responses were generally low, with the responses following single gag gene immunization being significantly depressed after challenge. A transient reduction in provirus load in the blood early after challenge was observed following env immunization, whilst the gag gene either alone or in combination with env resulted in significantly elevated provirus loads in lung. However, despite this, a significant reduction in lesion score was observed in animals immunized with the single gag gene at post-mortem. Inclusion of IFN-γ in the immunization mixture in general had no significant effects. The results thus showed that protective effects against VMV-induced lesions can be induced following respiratory immunization with the single gag gene, though this was accompanied by an increased pulmonary provirus load. © 2008 Elsevier Ltd. All rights reserved. | Descripción: | Reina, Ramsés et al. | Versión del editor: | http://dx.doi.org/10.1016/j.vaccine.2008.06.065 | URI: | http://hdl.handle.net/10261/114274 | DOI: | 10.1016/j.vaccine.2008.06.065 | Identificadores: | doi: 10.1016/j.vaccine.2008.06.065 issn: 0264-410X |
| Aparece en las colecciones: | (IDAB) Artículos |
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