edoc

Passive immunoprotection of Plasmodium falciparum-infected mice designates the CyRPA as candidate malaria vaccine antigen

Dreyer, A. M. and Matile, H. and Papastogiannidis, P. and Kamber, J. and Favuzza, P. and Voss, Till S. and Wittlin, S. and Pluschke, G.. (2012) Passive immunoprotection of Plasmodium falciparum-infected mice designates the CyRPA as candidate malaria vaccine antigen. Journal of immunology : official journal of the American Association of Immunologists, Vol. 188, H. 12. pp. 6225-6237.

Full text not available from this repository.

Official URL: http://edoc.unibas.ch/dok/A6094306

Downloads: Statistics Overview

Abstract

An effective malaria vaccine could prove to be the most cost-effective and efficacious means of preventing severe disease and death from malaria. In an endeavor to identify novel vaccine targets, we tested predicted Plasmodium falciparum open reading frames for proteins that elicit parasite-inhibitory Abs. This has led to the identification of the cysteine-rich protective Ag (CyRPA). CyRPA is a cysteine-rich protein harboring a predicted signal sequence. The stage-specific expression of CyRPA in late schizonts resembles that of proteins known to be involved in merozoite invasion. Immunofluorescence staining localized CyRPA at the apex of merozoites. The entire protein is conserved as shown by sequencing of the CyRPA encoding gene from a diverse range of P. falciparum isolates. CyRPA-specific mAbs substantially inhibited parasite growth in vitro as well as in a P. falciparum animal model based on NOD-scid IL2Rgamma(null) mice engrafted with human erythrocytes. In contrast to other P. falciparum mouse models, this system generated very consistent results and evinced a dose-response relationship and therefore represents an unprecedented in vivo model for quantitative comparison of the functional potencies of malaria-specific Abs. Our data suggest a role for CyRPA in erythrocyte invasion by the merozoite. Inhibition of merozoite invasion by CyRPA-specific mAbs in vitro and in vivo renders this protein a promising malaria asexual blood-stage vaccine candidate Ag
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Medical Parasitology and Infection Biology > Molecular Immunology (Pluschke)
UniBasel Contributors:Voss, Till S and Pluschke, Gerd and Wittlin, Sergio
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Assoc. of Immunologists
ISSN:0022-1767
Note:Publication type according to Uni Basel Research Database: Journal article
Related URLs:
Identification Number:
Last Modified:06 Nov 2018 13:38
Deposited On:16 Aug 2013 07:29

Repository Staff Only: item control page