Abstract:
:CpG-DNA is currently attracting attention as an effective and safe vaccine adjuvant to prevent from microbial infections. In this report, we examined the effects of oligo B, which is a synthetic CpG-DNA, in mucosal administration of Bacillus Calmette-Guérin (BCG) and diphtheria toxoid (DT). Co-administration with oligo B enhanced BCG-induced delayed type hypersensitivity to purified protein derivative (PPD) in guinea pigs. The titers of anti-DT serum IgG, IgA and mucosal IgA antibodies induced by intranasal administration with DT plus oligo B were significantly higher than that with DT alone. In both C57BL/6 and BALB/c mice, intranasal administration of DT with oligo B induced enough level of antibodies to prevent onset of diphtheria. The analysis of antibody subclasses showed that intranasal administration of oligo B induced not only IgG1 but also IgG2a, IgG2c and IgA anti-DT antibodies. In contrast, there was no or little production of the anti-DT serum IgE. Taken together our data suggest that oligo B is a powerful adjuvant in mucosal immunization.
journal_name
Vaccinejournal_title
Vaccineauthors
Maeyama J,Komiya T,Takahashi M,Isaka M,Goto N,Yamamoto Sdoi
10.1016/j.vaccine.2008.12.025subject
Has Abstractpub_date
2009-02-18 00:00:00pages
1166-73issue
8eissn
0264-410Xissn
1873-2518pii
S0264-410X(08)01753-2journal_volume
27pub_type
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