We previously tested in monkeys the P64k-DomIII fusion protein of DEN-2 (PD5), combined with the serogroup A capsular polysaccharide (CPS-A) from N. meningitidis as an immunopotentiator. The results revealed the induction of neutralizing antibodies and partial protection after DEN-2 challenge. Since one formulation of the CPS-A was only evaluated in monkeys, in the present study, we evaluated two CPS-A-based formulations in mice. Animals immunized with PD5 in alum with the highest dose of CPS-A produced the highest levels of INF-γ secretion upon viral stimulation, and accordingly, 100% protection. This is the first report that describes the dose effect of CPS-A and its capacity to potentiate the cell-mediated immunity induced by a heterologous antigen in mice.
Archives of Virology – Springer Journals
Published: May 1, 2012
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