Potentiation of antigen-specific antibody production by peptides derived from Ag85B of Mycobacterium tuberculosis
2015
To generate high-titer monoclonal antibodies, strong immuno-stimulation must be used for eliciting an intense cellular immune response. Here, we report that antigen-specific antibody production was potentiated by Peptide-25 derived from Ag85B of Mycobacterium tuberculosis, and that the production of antigen-specific IgG1 in particular was markedly potentiated; specifically, this occurred because the use of Peptide-25 resulted in an increase in the number of antigen-specific antibody-producing cells. We studied the activation of T cells by the peptide by examining gene expression. The observed expression pattern of GATA-3 and T-bet suggests that the peptide modulates the Th1/Th2 balance during immunization. This potentiation, which was remarkably high in BALB/c mice, could be applied in the immunization performed for monoclonal antibody production in vivo and in vitro.
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