ANTIGENICITY, IMMUNOGENICITY, AND PROTECTIVE EFFICACY OF PLASMODIUM VIVAX MSP1 PV200L: A POTENTIAL MALARIA VACCINE SUBUNIT

The merozoite surface protein 1 (MSP-1) is expressed in all Plasmodium species and is considered a major malaria vaccine candidate. We found that MSP-1 from Plasmodium vivax (PvMSP-1) contains a region of significant sequence homology with the 190L subunit vaccine derived from the P. falciparum MSP-...

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Veröffentlicht in:The American journal of tropical medicine and hygiene 2005-11, Vol.73 (5 suppl), p.16-24
Hauptverfasser: VALDERRAMA-AGUIRRE, AUGUSTO, QUINTERO, GUSTAVO, GOMEZ, ANDRES, CASTELLANOS, ALEJANDRO, PEREZ, YOBANA, MENDEZ, FABIAN, AREVALO-HERRERA, MYRIAM, HERRERA, SOCRATES
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container_end_page 24
container_issue 5 suppl
container_start_page 16
container_title The American journal of tropical medicine and hygiene
container_volume 73
creator VALDERRAMA-AGUIRRE, AUGUSTO
QUINTERO, GUSTAVO
GOMEZ, ANDRES
CASTELLANOS, ALEJANDRO
PEREZ, YOBANA
MENDEZ, FABIAN
AREVALO-HERRERA, MYRIAM
HERRERA, SOCRATES
description The merozoite surface protein 1 (MSP-1) is expressed in all Plasmodium species and is considered a major malaria vaccine candidate. We found that MSP-1 from Plasmodium vivax (PvMSP-1) contains a region of significant sequence homology with the 190L subunit vaccine derived from the P. falciparum MSP-1. The fragment, termed Pv200L, was expressed as a recombinant protein in Escherichia coli (rPv200L) and used to asses its immunologic relevance as a vaccine target. A cross-sectional, seroepidemiologic study conducted in Buenaventura, Colombia showed that 52.2% (95% confidence interval [CI] = 39.8-64.3) of individuals previously exposed to P. vivax and 72.8% (95% CI = 61.8-82.1) of P. vivax-infected patients had IgG antibodies to rPv200L. Immunization of BALB/c mice and Aotus monkeys induced IgG antibodies (titer > 10(6)) that cross-reacted with P. vivax parasites. Immunized monkeys displayed partial protection against a challenge with P. vivax blood stages. Our results suggest that Pv200L is a new malaria vaccine subunit and deserves further testing.
doi_str_mv 10.4269/ajtmh.2005.73.16
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subjects Amino Acid Sequence
Animals
Antibodies, Protozoan - blood
Antigens, Protozoan - chemistry
Antigens, Protozoan - genetics
Antigens, Protozoan - immunology
Antigens, Protozoan - metabolism
Antigens, Surface - chemistry
Antigens, Surface - genetics
Antigens, Surface - immunology
Antigens, Surface - metabolism
Aotus
Cebidae
Colombia - epidemiology
Cross-Sectional Studies
Escherichia coli
Escherichia coli - genetics
Escherichia coli - metabolism
Humans
Immunization
Immunoglobulin G - blood
Malaria Vaccines - administration & dosage
Malaria Vaccines - genetics
Malaria Vaccines - immunology
Malaria, Vivax - epidemiology
Malaria, Vivax - immunology
Malaria, Vivax - prevention & control
Merozoite Surface Protein 1 - chemistry
Mice
Mice, Inbred BALB C
Molecular Sequence Data
Plasmodium
Plasmodium falciparum
Plasmodium vivax
Plasmodium vivax - immunology
Plasmodium vivax - pathogenicity
Recombinant Proteins - genetics
Recombinant Proteins - immunology
Recombinant Proteins - metabolism
Seroepidemiologic Studies
title ANTIGENICITY, IMMUNOGENICITY, AND PROTECTIVE EFFICACY OF PLASMODIUM VIVAX MSP1 PV200L: A POTENTIAL MALARIA VACCINE SUBUNIT
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