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  • Title: Immunity to Plasmodium falciparum malaria sporozoites by somatic transgene immunization.
    Author: Gerloni M, Baliou WR, Billetta R, Zanetti M.
    Journal: Nat Biotechnol; 1997 Sep; 15(9):876-81. PubMed ID: 9306403.
    Abstract:
    Immunity against the human malaria parasite Plasmodium falciparum was induced using somatic transgene immunization, a method to effectively target B lymphocytes in vivo. A single inoculation of plasmid DNA containing an immunoglobulin heavy-chain gene coding in the complementarity-determining region 3 for three repeats of the sequence Asn-Ala-Asn-Pro (NANP), a B-cell epitope of P.falciparum sporozoites, induced antibodies against NANP in all mice. A booster with an antibody antigenized with the NANP peptide, or challenge with P. falciparum sporozoites, demonstrated the establishment of immunologic memory. Immunity to a parasite antigen can be induced by exploiting mechanisms in which B lymphocytes are both the source of the immunogen as well as the effector mechanism of immunity. The results indicate that somatic transgene immunization is a potential approach for vaccination against foreign pathogens.
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