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Content Provider | PubMed Central |
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Author | Coban, Cevayir Ishii, Ken J. Stowers, Anthony W. Keister, David B. Klinman, Dennis M. Kumar, Nirbhay |
Copyright Year | 2004 |
Abstract | Antibodies directed against Pfs25, a protein present on the surface of zygotes and ookinetes of Plasmodium falciparum, completely block pathogen transmission. We evaluated the immunomodulatory effect of CpG oligodeoxynucleotides (ODN) on the immunogenicity of recombinant Pfs25 (rPfs25) formulated in alum (Al). Immunization of mice with rPfs25 plus CpG ODN improved both the antibody titer (a 30-fold-higher antibody response than that with rPfs25-Al alone) and avidity. Coadministration of CpG ODN dramatically enhanced the titer of immunoglobulin G2A (IgG2a) compared to the titer of the IgG1-dominant response caused by rPfs25-Al alone, and the sera from the CpG ODN-coadministered group completely blocked the transmission of P. falciparum parasites to mosquitoes, as determined by membrane feeding assays. However, transmission-blocking experiments revealed that blocking efficacy was dependent on high-titer antibody levels, independent of isotypes. These results suggest that CpG ODN can be used as an adjuvant to enhance the immunogenicity of rPfs25 as a malaria transmission-blocking vaccine. |
Related Links | http://dx.doi.org/10.1128/IAI.72.1.584-588.2004 |
Starting Page | 584 |
File Format | |
ISSN | 10985522 |
e-ISSN | 10985522 |
Journal | Infection and Immunity |
Issue Number | 1 |
Volume Number | 72 |
Language | English |
Publisher | American Society for Microbiology |
Publisher Date | 2004-01-01 |
Access Restriction | Open |
Rights Holder | American Society for Microbiology |
Subject Keyword | Research in Higher Education |
Content Type | Text |
Resource Type | Article |
Subject | Infectious Diseases Parasitology Immunology Microbiology |
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