Effective Nanoparticle-Based Nasal Vaccine Against Latent and Congenital Toxoplasmosis in Sheep
| Autor: | Ducournau, Céline, Moiré, Nathalie, Carpentier, Rodolphe, Cantin, Pauline, Herkt, Clément, Lantier, Isabelle, Betbeder, Didier, Dimier-Poisson, Isabelle |
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| Přispěvatelé: | Infectiologie et Santé Publique (UMR ISP), Université de Tours (UT)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institute for Translational Research in Inflammation - U 1286 (INFINITE (Ex-Liric)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Vaxinano, granted by the SATT Nord, Lille, France, and Vaxinano, SAS, Lille, France, Université de Tours-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Immunologic diseases. Allergy
Protozoan Vaccines [SDV]Life Sciences [q-bio] nasal vaccination Protozoan Proteins Lymphocyte Activation Toxoplasmosis Congenital Mice Polysaccharides Animals ovine toxoplasmosis Administration Intranasal adjuvant free one-health approach Sheep nanoparticle Vaccination Brain Th1 Cells Infectious Disease Transmission Vertical Rats Toxoplasmosis Animal Latent Infection [SDV.IMM]Life Sciences [q-bio]/Immunology Nanoparticles lcsh:RC581-607 Toxoplasma |
| Zdroj: | Frontiers in Immunology Frontiers in Immunology, Frontiers, 2020, 11, 13 p. ⟨10.3389/fimmu.2020.02183⟩ Frontiers in Immunology, Vol 11 (2020) Frontiers in Immunology, 2020, 11, 13 p. ⟨10.3389/fimmu.2020.02183⟩ |
| ISSN: | 1664-3224 |
| Popis: | International audience; Toxoplasma gondiiis a parasitic protozoan of worldwide distribution, able to infect all warm-blooded animals, but particularly sheep. Primary infection in pregnant sheep leads to millions of abortions and significant economic losses for the livestock industry. Moreover, infected animals constitute the main parasitic reservoir for humans. Therefore, the development of a One-health vaccine seems the best prevention strategy. Following earlier work, a vaccine constituted of total extract ofToxoplasma gondiiproteins (TE) associated with maltodextrin nanoparticles (DGNP) was developed in rodents. In this study we evaluated the ability of this vaccine candidate to protect against latent and congenital toxoplasmosis in sheep. After two immunizations by either intranasal or intradermal route, DGNP/TE vaccine generated specific Th1-cellular immune response, mediated by APC-secretion of IFN-gamma and IL-12. Secretion of IL-10 appeared to regulate this Th1 response for intradermally vaccinated sheep but was absent in intranasally-vaccinated animals. Finally, protection against latent toxoplasmosis and transplacental transmission were explored. Intranasal vaccination led to a marked decrease of brain cysts compared with the non-vaccinated group. This DGNP/TE vaccine administered intranasally conferred a high level of protection against latent toxoplasmosis and its transplacental transmission in sheep, highlighting the potential for development of such a vaccine for studies in other species. |
| Databáze: | OpenAIRE |
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