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Immunogenicity of the Plasmodium falciparum glutamate-rich protein expressed by vaccinia virus

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The glurp gene of Plasmodium falciparum F32 has been inserted into a vaccinia virus, and the recombinant virus was designated VVG4. Expression of glurp in VVG4-infected Vero cells was analyzed by immunoprecipitation and revealed a primary GLURP product of approximately 220,000 Da; GLURP was detected both intracellularly and in culture supernatants. To study the immunogenicity of vaccinia virus-expressed GLURP, mice were immunized with VVG4 and serum samples were analyzed for antibody reactivity with three polypeptides, covering almost the entire GLURP molecule; these three polypeptides were produced in recombinant form in Escherichia coli. The immune response was primarily directed against a carboxy-terminal repeat region. The mouse anti-GLURP serum recognized authentic GLURP by immunoprecipitation analysis from P. falciparum grown in vitro. These results demonstrate that vaccinia virus-expressed glurp product can induce a humoral immune response against GLURP derived from blood-stage parasites.

OriginalsprogEngelsk
TidsskriftInfection and Immunity
Vol/bind62
Udgave nummer8
Sider (fra-til)3270-5
Antal sider6
ISSN0019-9567
StatusUdgivet - aug. 1994
Eksternt udgivetJa

ID: 203012623