title: Mechanism of neonatal idiotype suppression. II. Alterations in the T cell compartment suppress the maturation of B cell precursors.
abstract: The cellular mechanism in neonatally suppressed BALB/c mice, which maintains the chronic suppressed state of the TEPC-15 idiotype in the antibody response to phosphorylcholine (PC), was investigated. Cells taken from these suppressed mice cannot transfer suppression to adult BALB/c or affect the in vitro response to PC of adult BALB/c spleen cells. However, spleen cells or T cells from neonatally suppressed mice given to neonatal animals induce chronic suppression of the TEPC-15 idiotype in the anti-PC response. Co-transfer of T cells from neonatally suppressed cells with normal T cells prevented the induction of suppression in neonates. Transfer of T cells from normal or keyhole limpet hemocyanin-primed BALB/c increased the expression of TEPC-15 idiotype in chronically suppressed mice, whereas T cells from neonatally suppressed were ineffective. These findings show that T cells in neonatally suppressed mice can affect the development of immature but not mature cells. The restoration of TEPC-15 expression in neonatally suppressed animals by normal T cells and the failure to induce suppression in neonates by co-transfers of T cells from normal and chronically suppressed mice demonstrate the profound role of an altered T cell compartment in sustaining chronic idiotype suppression.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001402:B-Lymphocytes / Q000166:cytology*; D002454:Cell Differentiation; D005260:Female; D007130:Immunoglobulin Idiotypes; D007165:Immunosuppression Therapy; D051379:Mice; D008807:Mice, Inbred BALB C; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology
chemical_list: D007130:Immunoglobulin Idiotypes