Lack of oral tolerance in C3H/HeJ mice.
Daily gastric intubation of lipopolysaccharide (LPS)-responsive C3H/HeN, BALB/c, and Swiss mice with SRBC for 2 wk resulted in oral tolerance, whereas similarly treated LPS-nonresponsive C3H/HeJ mice gave splenic anti-SRBC PFC responses, including the IgA isotype, after systemic challenge with antigen. Oral tolerance in LPS-responsive C3H/HeN mice was due to T suppressor (Ts) cells because significant Ts cell activity was demonstrated in both Peyer's patches (PP) and spleens of these animals. On the other hand, T cells from PP and spleens of identically treated C3H/HeJ mice exhibited mainly T helper cell activity. Prior treatment of PP or spleen cell preparations from tolerant C3H/HeN mice with anti-Lyt-2.1 resulted in good in vitro anti-SRBC PFC responses, especially IgA isotype responses in PP cell cultures. These results indicate that oral administration of a thymic-dependent antigen (SRBC) to LPS-responsive mice induced a Ts cell population in PP, which, after migration to peripheral lymphoid tissue (e.g., spleen), suppressed responses to systemically administered antigen. LPS-nonresponsive mice lack this Ts cell pathway and continually respond to oral administration of antigen.
D000818:Animals; D000921:Antibody-Producing Cells / Q000276:immunology; D000941:Antigens / Q000008:administration & dosage*; D000950:Antigens, Ly / Q000276:immunology; D004912:Erythrocytes / Q000276:immunology*; D006462:Hemolytic Plaque Technique; D007108:Immune Tolerance; D007441:Intubation, Gastrointestinal; D008070:Lipopolysaccharides / Q000494:pharmacology; D008213:Lymphocyte Activation; D051379:Mice; D008809:Mice, Inbred C3H / Q000276:immunology*; D010581:Peyer's Patches / Q000276:immunology; D012756:Sheep; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology
D000941:Antigens; D000950:Antigens, Ly; D008070:Lipopolysaccharides