alexa Genetic Analysis of Erythrocyte Binding Antigen 175 (EB
ISSN: 2470-6965

Malaria Control & Elimination
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Research Article

Genetic Analysis of Erythrocyte Binding Antigen 175 (EBA-175), Apical Membrane Antigen (AMA-1) and Merozoite Surface Protein 3 (MSP-3) Allelic Types in Plasmodium Falciparum Isolates From Rural Area in Senegal

Magatte Ndiaye*, Babacar Faye, Roger Tine, Jean L Ndiaye, Khadyme Sylla, Doudou Sow, Ami C Lo, Annie Abiola, Yémou Dieng, Badara Cissé and Oumar Gaye

Parasitology-Mycology Service, Faculty of Medicine Pharmacy and Dentistry, University Cheikh Anta Diop, Senegal

*Corresponding Author:
Magatte Ndiaye
Parasitology-Mycology Service
Faculty of Medicine Pharmacy and Dentistry
University Cheikh Anta Diop, Senegal
Tel: +221 338251998
E-mail: [email protected]

Received Date: January 30, 2014; Accepted Date: March 12, 2014; Published Date: March 20, 2014

Citation: Magatte Ndiaye, Babacar Faye, Roger Tine, Jean L Ndiaye, Khadyme Sylla, et al. (2014) Genetic Analysis of Erythrocyte Binding Antigen 175 (EBA-175), Apical Membrane Antigen (AMA-1) and Merozoite Surface Protein 3 (MSP-3) Allelic Types in Plasmodium Falciparum Isolates From Rural Area in Senegal. Malar Chemoth Cont Elimination 3:113. doi:10.4172/ 2090-2778.1000113

Copyright: © 2014 Magatte N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Background: Several of the intended P. falciparum vaccine candidate antigens are highly polymorphic and could render a vaccine ineffective if their antigenic sites were not represented in the vaccine. This study aimed to characterize genetic diversity of vaccine candidate antigens merozoite surface protein-3 (MSP-3), apical membrane antigen-1 (AMA-1) and erythrocyte binding antigen (EBA-175) in P. falciparum isolates from Senegal. Methods: DNA analysis was completed on 170 isolates of P. falciparum collected from Keur Soce in Senegal between 2006 and 2008. Genetic diversity was determined in the three P. falciparum genes by, PCR followed by restriction fragment length polymorphism (RFLP). Results: From 170 samples collected, successful, PCR products were obtained from 135 (79%), 140 (82%) and 128 (75%) for AMA-1, MSP-3 and EBA-175, respectively. The results showed that the EBA-175 gene presented 4 different alleles [EBA-175F_loop (62.3%), EBA-175C_loop (46.1%), EBA-175~400bp (17.6%), EBA-175~360bp (8.4%)]. Regarding the MSP-3 patterns, the analysis revealed the presence of three alleles MSP-3_K1 (49.2%), MSP-3_3D7 (54.2%) and MSP-3~350bp (15%). For AMA-1, the results showed three different alleles AMA-1_K1 (39%), AMA-1_HB3 (33%), AMA-1_3D7 (32%). Conclusion: Characterization of the genetic diversity in Plasmodium isolates from Keur Soce in Senegal in the three genes investigated showed a high degree of polymorphism. These findings are helpful in the formulation of a vaccine considering restricted repertoire populations.

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