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Article

Protective Malaria Vaccine in Mice Based on the Plasmodium vivax Circumsporozoite Protein Fused with the Mumps Nucleocapsid Protein

1
Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-000 SP, Brazil
2
Center of Cellular and Molecular Therapy, Federal University of São Paulo, São Paulo 04044-010 SP, Brazil
3
Unit of Malaria Infection & Immunity, Institut Pasteur, 75015 Paris, France
4
Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000 SP, Brazil
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Vaccines 2020, 8(2), 190; https://doi.org/10.3390/vaccines8020190
Received: 30 March 2020 / Revised: 16 April 2020 / Accepted: 16 April 2020 / Published: 19 April 2020
(This article belongs to the Special Issue Vaccine Candidates against Tropical Diseases)
Plasmodium vivax is the most common species of human malaria parasite found outside Africa, with high endemicity in Asia, Central and South America, and Oceania. Although Plasmodium falciparum causes the majority of deaths, P. vivax can lead to severe malaria and result in significant morbidity and mortality. The development of a protective vaccine will be a major step toward malaria elimination. Recently, a formulation containing the three allelic variants of the P. vivax circumsporozoite protein (PvCSP—All epitopes) showed partial protection in mice after a challenge with the hybrid Plasmodium berghei (Pb) sporozoite, in which the PbCSP central repeats were replaced by the VK210 PvCSP repeats (Pb/Pv sporozoite). In the present study, the chimeric PvCSP allelic variants (VK210, VK247, and P. vivax-like) were fused with the mumps virus nucleocapsid protein in the absence (NLP-CSPR) or presence of the conserved C-terminal (CT) domain of PvCSP (NLP-CSPCT). To elicit stronger humoral and cellular responses, Pichia pastoris yeast was used to assemble them as nucleocapsid-like particles (NLPs). Mice were immunized with each recombinant protein adjuvanted with Poly (I:C) and presented a high frequency of antigen-specific antibody-secreting cells (ASCs) on days 5 and 30, respectively, in the spleen and bone marrow. Moreover, high IgG titers against all PvCSP variants were detected in the sera. Later, these immunized mice with NLP-CSPCT were challenged with Pb/Pv sporozoites. Sterile protection was observed in 30% of the challenged mice. Therefore, this vaccine formulation use has the potential to be a good candidate for the development of a universal vaccine against P. vivax malaria. View Full-Text
Keywords: malaria vaccine; Plasmodium vivax; circumsporozoite protein; mumps nucleoprotein malaria vaccine; Plasmodium vivax; circumsporozoite protein; mumps nucleoprotein
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MDPI and ACS Style

Marques, R.F.; Gimenez, A.M.; Aliprandini, E.; Novais, J.T.; Cury, D.P.; Watanabe, I.-S.; Dominguez, M.R.; Silveira, E.L.V.; Amino, R.; Soares, I.S. Protective Malaria Vaccine in Mice Based on the Plasmodium vivax Circumsporozoite Protein Fused with the Mumps Nucleocapsid Protein. Vaccines 2020, 8, 190. https://doi.org/10.3390/vaccines8020190

AMA Style

Marques RF, Gimenez AM, Aliprandini E, Novais JT, Cury DP, Watanabe I-S, Dominguez MR, Silveira ELV, Amino R, Soares IS. Protective Malaria Vaccine in Mice Based on the Plasmodium vivax Circumsporozoite Protein Fused with the Mumps Nucleocapsid Protein. Vaccines. 2020; 8(2):190. https://doi.org/10.3390/vaccines8020190

Chicago/Turabian Style

Marques, Rodolfo F.; Gimenez, Alba M.; Aliprandini, Eduardo; Novais, Janaina T.; Cury, Diego P.; Watanabe, Ii-Sei; Dominguez, Mariana R.; Silveira, Eduardo L.V.; Amino, Rogerio; Soares, Irene S. 2020. "Protective Malaria Vaccine in Mice Based on the Plasmodium vivax Circumsporozoite Protein Fused with the Mumps Nucleocapsid Protein" Vaccines 8, no. 2: 190. https://doi.org/10.3390/vaccines8020190

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