The antimicrobial molecule trappin-2/elafin has anti-parasitic properties and is protective in vivo in a murine model of cerebral malaria - Inserm - Institut national de la santé et de la recherche médicale
Article Dans Une Revue Scientific Reports Année : 2017

The antimicrobial molecule trappin-2/elafin has anti-parasitic properties and is protective in vivo in a murine model of cerebral malaria

Résumé

According to the WHO, and despite reduction in mortality rates, there were an estimated 438 000 malaria deaths in 2015. Therefore new antimalarials capable of limiting organ damage are still required. We show that systemic and lung adenovirus (Ad)-mediated over-expression of trappin-2 (T-2) an antibacterial molecule with anti-inflammatory activity, increased mice survival following infection with the cerebral malaria-inducing Plasmodium berghei ANKA (PbANKA) strain. Systemically, T-2 reduced PbANKA sequestration in spleen, lung, liver and brain, associated with a decrease in pro-inflammatory cytokines (eg TNF-α in spleen and lung) and an increase in IL-10 production in the lung. Similarly, local lung instillation of Ad-T-2 resulted in a reduced organ parasite sequestration and a shift towards an anti-inflammatory/repair response, potentially implicating monocytes in the protective phenotype. Relatedly, we demonstrated in vitro that human monocytes incubated with Plasmodium falciparum-infected red blood cells (Pf-iRBCs) and IgGs from hyper-immune African human sera produced T-2 and that the latter colocalized with merozoites and inhibited Pf multiplication. This array of data argues for the first time for the potential therapeutic usefulness of this host defense peptide in human malaria patients, with the aim to limit acute lung injury and respiratory distress syndrom often observed during malaria episodes.
Fichier principal
Vignette du fichier
srep42243.pdf (1.17 Mo) Télécharger le fichier
Origine Publication financée par une institution
Loading...

Dates et versions

hal-01484441 , version 1 (07-03-2017)

Licence

Identifiants

Citer

Christian Roussilhon, Gilles Bang, Fabien Bastaert, Brigitte Solhonne, Ignacio Garcia-Verdugo, et al.. The antimicrobial molecule trappin-2/elafin has anti-parasitic properties and is protective in vivo in a murine model of cerebral malaria. Scientific Reports, 2017, 7, pp.42243. ⟨10.1038/srep42243⟩. ⟨hal-01484441⟩
322 Consultations
41 Téléchargements

Altmetric

Partager

More