Table of Contents Author Guidelines Submit a Manuscript
Journal of Immunology Research
Volume 2015, Article ID 723946, 11 pages
http://dx.doi.org/10.1155/2015/723946
Research Article

Experimental Immunization Based on Plasmodium Antigens Isolated by Antibody Affinity

1Department of Biochemistry and Molecular Biology IV, Universidad Complutense de Madrid, Facultad de Veterinaria, Ciudad Universitaria, 28040 Madrid, Spain
2Department of Biology, Faculty of Basic Sciences, Islamic Azad University, Central Tehran Branch, Tehran 14676-86831, Iran
3Department of Medicine and Surgery, Psychology, Preventive Medicine and Public Health and Medical Immunology and Microbiology, Faculty of Health Sciences, Universidad Rey Juan Carlos, Alcorcón, 28922 Madrid, Spain
4Research Institute Hospital 12 de Octubre, Universidad Complutense de Madrid, 28040 Madrid, Spain

Received 25 June 2015; Accepted 25 August 2015

Academic Editor: Yoshihiko Hoshino

Copyright © 2015 Ali N. Kamali et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Vaccines blocking malaria parasites in the blood-stage diminish mortality and morbidity caused by the disease. Here, we isolated antigens from total parasite proteins by antibody affinity chromatography to test an immunization against lethal malaria infection in a murine model. We used the sera of malaria self-resistant ICR mice to lethal Plasmodium yoelii yoelii 17XL for purification of their IgGs which were subsequently employed to isolate blood-stage parasite antigens that were inoculated to immunize BALB/c mice. The presence of specific antibodies in vaccinated mice serum was studied by immunoblot analysis at different days after vaccination and showed an intensive immune response to a wide range of antigens with molecular weight ranging between 22 and 250 kDa. The humoral response allowed delay of the infection after the inoculation to high lethal doses of P. yoelii yoelii 17XL resulting in a partial protection against malaria disease, although final survival was managed in a low proportion of challenged mice. This approach shows the potential to prevent malaria disease with a set of antigens isolated from blood-stage parasites.