Title
Probing the efficacy of a heterologous Leishmania/L. Viannia braziliensis recombinant enolase as a candidate vaccine to restrict the development of L. infantum in BALB/c mice
Date Issued
01 July 2017
Access level
metadata only access
Resource Type
journal article
Author(s)
Santos T.T.O.
Martins V.T.
Lage D.P.
Costa L.E.
Salles B.C.S.
Carvalho A.M.R.S.
Dias D.S.
Ribeiro P.A.F.
Machado-de-Ávila R.A.
Roatt B.M.
de Magalhães-Soares D.F.
Menezes-Souza D.
Coelho E.A.F.
Duarte M.C.
Publisher(s)
Elsevier B.V.
Abstract
In the present study, the Leishmania braziliensis enolase protein was evaluated as a vaccine candidate against visceral leishmaniasis (VL). The DNA sequence was cloned and the recombinant protein (rEnolase) was evaluated as a vaccine, associated with saponin, as an immune adjuvant. The protective efficacy of the rEnolase plus saponin combination was investigated in BALB/c mice against Leishmania infantum infection. The results revealed that the vaccine induced higher levels of IFN-γ, IL-12, and GM-CSF when a capture ELISA and flow cytometry were performed, as well as an antileishmanial nitrite production after using in vitro stimulation with rEnolase and an antigenic Leishmania preparation. The vaccinated animals, when compared to the control groups, showed a lower parasite burden in the liver, spleen, bone marrow, and paws’ draining lymph nodes when both a limiting dilution technique and RT-PCR assay were performed. In addition, these mice showed low levels of antileishmanial IL-4, IL-10, and anti-Leishmania IgG1 isotype antibodies. Partial protection was associated with IFN-γ production, which was mainly mediated by CD4+ T cells. In conclusion, the present study's data showed that the L. braziliensis enolase protein could be considered a vaccine candidate that offers heterologous protection against VL.
Start page
8
End page
16
Volume
171
Language
English
OCDE Knowledge area
Inmunología
Tecnología para la identificación y funcionamiento del ADN, proteínas y enzimas y como influencian la enfermedad)
Subjects
Scopus EID
2-s2.0-85015985712
PubMed ID
Source
Acta Tropica
ISSN of the container
0001706X
Sponsor(s)
Instituto Nacional de Ciência e Tecnologia para Excitotoxicidade e Neuroproteção
This work was supported by grants from Pró-Reitoria de Pesquisa da Universidade Federal de Minas Gerais (Edital 02/2017), Instituto Nacional de Ciência e Tecnologia em Nanobiofarmacêutica (INCT Nano-Biofar), FAPEMIG (CBB-APQ-00819-12 and CBB-APQ-01778-2014) and CNPq (APQ-482976/2012-8, APQ-488237/2013-0, and APQ-467640/2014-9). EAFC is a grant recipient of CNPq. MACF is a grant recipient of CAPES/FAPEMIG.
Sources of information:
Directorio de Producción Científica
Scopus