Complete protection against P. berghei malaria upon heterologous prime/boost immunization against circumsporozoite protein employing Salmonella type III secretion system and Bordetella adenylate cyclase toxoid

Tartz, Susanne; Rüssmann, Holger; Kamanova, Jana; Sebo, Peter; Sturm, Angelika; Heussler, Volker; Fleischer, Bernhard; Jacobs, Thomas (2008). Complete protection against P. berghei malaria upon heterologous prime/boost immunization against circumsporozoite protein employing Salmonella type III secretion system and Bordetella adenylate cyclase toxoid. Vaccine, 26(47), pp. 5935-5943. Elsevier 10.1016/j.vaccine.2008.08.057

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Sterile immunity against malaria can be achieved by the induction of IFNgamma-producing CD8(+) T cells that target infected hepatocytes presenting epitopes of the circumsporozoite protein (CSP). In the present study we evaluate the protective efficacy of a heterologous prime/boost immunization protocol based on the delivery of the CD8(+) epitope of Plasmodium berghei CSP into the MHC class I presentation pathway, by either a type III secretion system of live recombinant Salmonella and/or by direct translocation of a recombinant Bordetella adenylate cyclase toxoid fusion (ACT-CSP) into the cytosol of professional antigen-presenting cells (APCs). A single intraperitoneal application of the recombinant ACT-CSP toxoid, as well as a single oral immunization with the Salmonella vaccine, induced a specific CD8(+) T cell response, which however conferred only a partial protection on mice against a subsequent sporozoite challenge. In contrast, a heterologous prime/boost vaccination with the live Salmonella followed by ACT-CSP led to a significant enhancement of the CSP-specific T cell response and induced complete protection in all vaccinated mice.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Cell Biology > Malaria
08 Faculty of Science > Department of Biology > Institute of Cell Biology

UniBE Contributor:

Heussler, Volker

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

0264-410X

Publisher:

Elsevier

Language:

English

Submitter:

Volker Heussler

Date Deposited:

11 Jul 2016 14:52

Last Modified:

12 Jul 2016 07:09

Publisher DOI:

10.1016/j.vaccine.2008.08.057

PubMed ID:

18804138

BORIS DOI:

10.7892/boris.84082

URI:

https://boris.unibe.ch/id/eprint/84082

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