Unimpaired clearance of Mycobacterium bovis BCG infection in selectively T-cell anergic TCR-V beta 8.2 transgenic mice.
The anergy induced in mice with staphylococcal enterotoxin B (SEB) has been shown to involve selective unresponsiveness in cytokine expression. While interleukin-2 (IL-2), IL-3 and IL-4 mRNA levels are substantially reduced in anergic T cells upon restimulation with SEB, mRNA for interferon-gamma (IFN-gamma) is expressed normally. On the other hand, infection with Nippostrongylus brasiliensis is known to break an established T-cell anergy. This knowledge prompted us to examine the effect of infection with an intracellular microbe, bacillus Calmett-Guérin (BCG), on the expression of anergy induced with SEB. We have demonstrated that while the SEB-induced anergy was not abrogated by BCG infection, the V beta 8.2 transgenic mice, in which almost all T cells were anergized with SEB, were capable of developing the effective acquired protective immunity, possibly through the preserved capacity to induce IFN-gamma leading to induction of nitric oxide synthase.
Koide
Y
Y
Department of Microbiology and Immunology, Hamamatsu University School of Medicine, Japan.
Yoshida
A
A
Uchijima
M
M
Yoshida
T O
TO
D000818:Animals; D001483:Base Sequence; D018929:Cell Culture Techniques; D017635:Clonal Anergy / Q000276:immunology*; D004768:Enterotoxins / Q000276:immunology; D007371:Interferon-gamma / Q000096:biosynthesis; D051379:Mice; D008822:Mice, Transgenic; D008969:Molecular Sequence Data; D009163:Mycobacterium bovis / Q000254:growth & development*; D019001:Nitric Oxide Synthase / Q000096:biosynthesis; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000235:genetics; D011948:Receptors, Antigen, T-Cell / Q000032:analysis*; D016693:Receptors, Antigen, T-Cell, alpha-beta; D013601:T-Lymphocytes / Q000276:immunology*; D014373:Tuberculin / Q000276:immunology; D014376:Tuberculosis / Q000276:immunology* / Q000382:microbiology
D004768:Enterotoxins; D012333:RNA, Messenger; D011948:Receptors, Antigen, T-Cell; D016693:Receptors, Antigen, T-Cell, alpha-beta; C075784:T cell receptor Vbeta8; D014373:Tuberculin; C031818:enterotoxin B, staphylococcal; D007371:Interferon-gamma; D019001:Nitric Oxide Synthase