title: Cross-linking of T cell mitogens: effects on B and T cell proliferation and immunoglobulin synthesis.
abstract: The T cell mitogens Pa-2, concanavalin A (con A) and its dimeric derivative succinyl-con A, were each cross-linked with the bifunctional reagent dimethyl suberimidate. Although the dose-response curves of these insoluble aggregated products were markedly changed from those of the soluble mitogens, each aggregate continued to stimulate DNA synthesis by murine thymus and T cells. Both aggregated Pa-2 and aggregated succinyl con A stimulated DNA synthesis by B cells from athymic (Nu/Nu) mice. Aggregated con A did not stimulate these cells and, like soluble con A, depressed the background incorporation of 3H-thymidine. Unlike soluble Pa-2, aggregated Pa-2 also greatly increased Ig production by both the B cell cultures and B + T cell cultures from normal (BALB/c) mice.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology*; D003208:Concanavalin A / Q000031:analogs & derivatives / Q000494:pharmacology; D004261:DNA Replication; D008213:Lymphocyte Activation; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D008934:Mitogens; D008968:Molecular Conformation; D013601:T-Lymphocytes / Q000276:immunology*; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D008934:Mitogens; D014316:Tritium; D003208:Concanavalin A; D013936:Thymidine