Antibody Responses to Allergen Lol pIV Are Suppressed Following Adoptive Transfer of B Lymphocytes from the Internal Image Anti-idiotypic Antibody-Treated Mice

Abstract An internal image anti-idiotypic antibody, designated B1/1, was generated against an idiotope (Id91) of the monoclonal antibody (mAb91) specific for Lol p IV. The administration of B1/1 in PBS, at doses ranging from 100 ng to 100 μg/mouse, to syngeneic Balb/c mice resulted in the suppression of the formation of anti- Lol p IV antibodies that possessed the Id91. Spleen cells obtained from the mice 2 weeks after the treatment with B1/1 (25 μg/mouse) were adoptively transferred intravenously into the syngeneic recipients which were challenged intraperitoneally with Lol p IV in alum 2 hr after the transfer. The recipients were boosted with Lol p IV 14 days later. It was demonstrated that the transfer of splenic B cells (but not of T cells) from B1/1-treated donors induced a significant suppression of not only the level of IgE and IgG antibodies to Lol p IV, but also the level of antibodies possessing the Id91. Treatment of the B cells with mAb91 plus complement abrogated their ability to transfer the suppression. This study indicates that the treatment with the anti-Id B1/1 generated B cells that were characterized, serologically, as possessing the anti-Id-like antibodies on their surface and were responsible for transferring the suppression of the formation of antibodies to allergen Lol p IV and the expression of Id91.