title: Induction of oral tolerance in splenocyte-reconstituted SCID mice.
abstract: The participation of each lymphocyte compartment in the induction of oral tolerance for antibody response was investigated by means of a new cell-transfer experimental system, using severe combined immunodeficiency (SCID) mice. Various lymphocyte compartments from BALB/c mice were transferred into SCID mice and these mice were evaluated for oral tolerance induction. First, whole splenocytes from BALB/c mice were transferred into SCID mice and these mice were orally administered bovine alpha s1-casein. The specific antibody response in these mice after subsequent immunization with antigen was greatly reduced compared to controls which were not fed the antigen, and it was demonstrated that oral tolerance was induced in SCID mice bearing donor splenocytes. Oral tolerance was induced in SCID mice that were reconstituted with only T cells, revealing that B cells were not required for the induction of oral tolerance. Further, oral tolerance was induced in SCID mice reconstituted with CD8-depleted splenocytes but not in mice reconstituted with only CD8+ T cells. These results demonstrate that oral tolerance could be induced in SCID mice bearing normal splenocytes and that interaction of CD4+ T cells with antigen-presenting cells other than B cells are responsible for the induction of oral tolerance. Our experimental system may be useful for investigations with human lymphocytes.
authors.affiliation: Department of Applied Biological Chemistry, University of Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Yoshida
authors.forename: S
authors.initials: S
authors.lastname: Hachimura
authors.forename: K
authors.initials: K
authors.lastname: Hirahara
authors.forename: T
authors.initials: T
authors.lastname: Hisatsune
authors.forename: K
authors.initials: K
authors.lastname: Nishijima
authors.forename: A
authors.initials: A
authors.lastname: Shiraishi
authors.forename: S
authors.initials: S
authors.lastname: Kaminogawa
mesh_terms: D000284:Administration, Oral; D000818:Animals; D000906:Antibodies / Q000097:blood; D000917:Antibody Formation / Q000187:drug effects / Q000276:immunology; D000938:Antigen-Presenting Cells / Q000276:immunology*; D000941:Antigens / Q000008:administration & dosage / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D002364:Caseins / Q000008:administration & dosage / Q000276:immunology; D002417:Cattle; D005260:Female; D007108:Immune Tolerance / Q000276:immunology*; D016219:Immunotherapy, Adoptive; D008198:Lymph Nodes / Q000166:cytology / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D016513:Mice, SCID; D013154:Spleen / Q000166:cytology / Q000276:immunology
chemical_list: D000906:Antibodies; D000941:Antigens; D002364:Caseins