Abstract:
:Interleukin-12 is one of the cytokines that induce acquired immunity by progressing the differentiation of T cells. When antigens are presented by APCs, including macrophages and DCs, T cells are activated and produce the Th1 cytokines IL-2 and IFN-γ. We have previously reported greater IL-12 production from macrophages infected with early-shared BCG sub-strains (ex. BCG-Japan, -Sweden) than from those infected with late-shared BCG (ex. BCG-Pasteur and -Connaught) . In this study, we investigated the Th1 cytokine-inducing activity of splenocytes co-cultured with BCG-infected DCs. Early-shared BCG-infected DCs produced IL-12 and TNF-α⋅ Furthermore, when they were co-cultured with purified protein derivative-stimulated DCs, the splenocytes of mice immunized with BCG-Tokyo/Japan produced more Th1 cytokine than did those of mice immunized with BCG-Connaught. In conclusion, early-shared BCG sub-strains more strongly induce Th1 cytokine production in vivo. This study provides basic information to inform the selection of candidates for primary vaccination.
journal_name
Microbiol Immunoljournal_title
Microbiology and immunologyauthors
Taniguchi K,Miyatake Y,Hayashi D,Takami A,Itoh S,Yamamoto S,Hida S,Onozaki K,Takii Tdoi
10.1111/1348-0421.12326subject
Has Abstractpub_date
2015-11-01 00:00:00pages
684-9issue
11eissn
0385-5600issn
1348-0421journal_volume
59pub_type
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