Leishmaniavirus-Dependent Metastatic Leishmaniasis Is Prevented by Blocking IL-17A.

Détails

Ressource 1Télécharger: BIB_A071D03EE498.P001.pdf (3843.12 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_A071D03EE498
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Leishmaniavirus-Dependent Metastatic Leishmaniasis Is Prevented by Blocking IL-17A.
Périodique
PLoS Pathogens
Auteur⸱e⸱s
Hartley M.A., Bourreau E., Rossi M., Castiglioni P., Eren R.O., Prevel F., Couppié P., Hickerson S.M., Launois P., Beverley S.M., Ronet C., Fasel N.
ISSN
1553-7374 (Electronic)
ISSN-L
1553-7366
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Volume
12
Numéro
9
Pages
e1005852
Langue
anglais
Résumé
Cutaneous leishmaniasis has various outcomes, ranging from self-healing reddened papules to extensive open ulcerations that metastasise to secondary sites and are often resistant to standard therapies. In the case of L. guyanensis (L.g), about 5-10% of all infections result in metastatic complications. We recently showed that a cytoplasmic virus within L.g parasites (LRV1) is able to act as a potent innate immunogen, worsening disease outcome in a murine model. In this study, we investigated the immunophenotype of human patients infected by L.g and found a significant association between the inflammatory cytokine IL-17A, the presence of LRV1 and disease chronicity. Further, IL-17A was inversely correlated to the protective cytokine IFN-γ. These findings were experimentally corroborated in our murine model, where IL-17A produced in LRV1+ L.g infection contributed to parasite virulence and dissemination in the absence of IFN-γ. Additionally, IL-17A inhibition in mice using digoxin or SR1001, showed therapeutic promise in limiting parasite virulence. Thus, this murine model of LRV1-dependent infectious metastasis validated markers of disease chronicity in humans and elucidated the immunologic mechanism for the dissemination of Leishmania parasites to secondary sites. Moreover, it confirms the prognostic value of LRV1 and IL-17A detection to prevent metastatic leishmaniasis in human patients.
Pubmed
Web of science
Open Access
Oui
Création de la notice
23/09/2016 8:46
Dernière modification de la notice
20/08/2019 15:06
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