Baculovirus-expressed constructs induce immunoglobulin G that recognizes VAR2CSA on Plasmodium falciparum-infected erythrocytes

Lea Barfod, Morten A Nielsen, Louise Turner, Madeleine Dahlbäck, Anja T R Jensen, Lars Hviid, Thor G Theander, Ali Salanti

Abstract

We raised specific antisera against recombinant VAR2CSA domains produced in Escherichia coli and in insect cells. All were reactive in enzyme-linked immunosorbent assay, but only insect cell-derived constructs induced immunoglobulin G (IgG) that was reactive with native VAR2CSA on the surface of infected erythrocytes. Our data show that five of the six VAR2CSA Duffy-binding-like domains are surface exposed and that induction of surface-reactive VAR2CSA-specific IgG depends critically upon antigen conformation. These findings have implications for the development of vaccines against pregnancy-associated Plasmodium falciparum malaria.

OriginalsprogEngelsk
TidsskriftInfection and Immunity
Vol/bind74
Udgave nummer7
Sider (fra-til)4357-60
Antal sider4
ISSN0019-9567
DOI
StatusUdgivet - jul. 2006
Udgivet eksterntJa

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