Immunogenicity of the Plasmodium falciparum Pf332-DBL domain in combination with different adjuvants.
The Plasmodium falciparum antigen 332 (Pf332) is a conserved blood-stage antigen, which has been suggested to play a role in parasite invasion. In the present study, we have investigated the immunogenicity of the Duffy-binding like (DBL)-domain of the Pf332 molecule in combination with different adjuvants in four animal species. Three of the adjuvants are applicable for human use (Montanide ISA 720, alum and levamisole), whilst Freund's adjuvant served as a positive control adjuvant. Montanide ISA 720 was able to generate a significant and Th2-biased IgG response in BALB/c and C57BL/6 mice. Alum was a strong inducer of a Th2-type immune response only in BALB/c mice, whereas it was a poor adjuvant together with Pf332-DBL in C57BL/6 mice, rabbits and rats. Levamisole did not show any obvious adjuvant effect in any of the immunized animals. Thus in the case with Pf332-DBL, Montanide ISA 720 may be an adjuvant to further explore in the development of a vaccine against malaria.
Du
Cheng
C
Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, Jilin University, Xian Da Lu 5333, Changchun 130062, China.
Nilsson
Sandra
S
Lu
Huijun
H
Yin
Jigang
J
Jiang
Ning
N
Wahlgren
Mats
M
Chen
Qijun
Q
D000276:Adjuvants, Immunologic / Q000494:pharmacology*; D000534:Alum Compounds / Q000494:pharmacology; D000818:Animals; D000913:Antibodies, Protozoan / Q000097:blood; D000917:Antibody Formation; D005620:Freund's Adjuvant / Q000494:pharmacology; D007074:Immunoglobulin G / Q000097:blood; D007978:Levamisole / Q000494:pharmacology; D017780:Malaria Vaccines / Q000276:immunology*; D008353:Mannitol / Q000031:analogs & derivatives / Q000494:pharmacology; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D009829:Oleic Acids / Q000494:pharmacology; D010963:Plasmodium falciparum / Q000276:immunology; D015800:Protozoan Proteins / Q000276:immunology*; D011817:Rabbits; D051381:Rats; D017207:Rats, Sprague-Dawley
D000276:Adjuvants, Immunologic; D000534:Alum Compounds; D000913:Antibodies, Protozoan; D007074:Immunoglobulin G; D017780:Malaria Vaccines; D009829:Oleic Acids; D015800:Protozoan Proteins; C073415:antigen Pf332, Plasmodium; C001681:mannide monooleate; D007978:Levamisole; C041524:aluminum sulfate; D008353:Mannitol; D005620:Freund's Adjuvant