Immunogenicity and protective efficacy of a recombinant yellow fever vaccine against the murine malarial parasite Plasmodium yoelii.
The live-attenuated yellow fever vaccine (YF17D) is one of the safest and most effective vaccines available today. Here, YF17D was genetically altered to express the circumsporozoite protein (CSP) from the murine malarial parasite Plasmodium yoelii. Reconstituted recombinant virus was viable and exhibited robust CSP expression. Immunization of naïve mice resulted in extensive proliferation of adoptively transferred CSP-specific transgenic CD8(+) T-cells. A single immunization of naïve mice with recombinant YF17D resulted in robust production of IFN-gamma by CD8(+) T-cells and IFN-gamma and IL-2 by CD4(+) T-cells. A prime-boost regimen consisting of recombinant virus followed by a low-dose of irradiated sporozoites conferred protection against challenge with P. yoelii. Taken together, these results show that recombinant YF17D can efficiently express CSP in culture, and prime a protective immune response in vivo.
Stoyanov
Cristina T
CT
Laboratory of Virology and Infectious Disease, The Rockefeller University, 1230 York Ave, New York, NY 10065, USA.
Boscardin
Silvia B
SB
Deroubaix
Stephanie
S
Barba-Spaeth
Giovanna
G
Franco
David
D
Nussenzweig
Ruth S
RS
Nussenzweig
Michel
M
Rice
Charles M
CM
D019264:Adoptive Transfer; D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D005260:Female; D007111:Immunity, Cellular; D007117:Immunization, Secondary; D007371:Interferon-gamma / Q000276:immunology; D007376:Interleukin-2 / Q000276:immunology; D008288:Malaria / Q000276:immunology / Q000517:prevention & control*; D017780:Malaria Vaccines / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008822:Mice, Transgenic; D010957:Plasmids; D010967:Plasmodium yoelii / Q000276:immunology; D015800:Protozoan Proteins / Q000276:immunology*; D014613:Vaccines, Attenuated / Q000276:immunology; D022341:Yellow Fever Vaccine / Q000276:immunology*
D007376:Interleukin-2; D017780:Malaria Vaccines; D015800:Protozoan Proteins; D014613:Vaccines, Attenuated; D022341:Yellow Fever Vaccine; C041595:circumsporozoite protein, Protozoan; D007371:Interferon-gamma
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