title: Activation of mouse lymphocytes by anti-immunoglobulin. IV. Stimulation with soluble heterologous anti-delta antibodies.
abstract: Mouse spleen cells were stimulated to proliferate in vitro by soluble affinity-purified heterologous antibodies to mouse delta. Antibodies from goat or rabbit antisera to TEPC 1017, a mouse IgD myeloma protein, were purified on an affinity column of TEPC 1033, a second mouse IgD myeloma protein. Maximum uptake of [3H]thymidine in the range of 60,000 cpm was obtained after 48 hr of culture with anti-delta at concentrations of 50 micrograms/ml. In contrast, the hybridoma 10-4.22 anti-delta was nonmitogenic at similar concentrations. The proliferative response was not impaired upon removal of T cells by treatment with an anti-thymocyte serum (ATS), nor by removal of adherent cells by passage of spleen cells over Sephadex G-10 columns and counter-flow centrifugation. Splenic lymphocytes isolated on the fluorescence activated cell sorter (FACS) with intermediate-to-high amounts of surface IgD (sIgD) were responsive to soluble anti-delta, while IgD-negative cells, or cells with low amounts of sIgD, were unresponsive. Spleen cells from mice less than 4 weeks of age, or from mice carrying the X-linked B cell defect (xid), were unresponsive to anti-delta. These results indicate that anti-delta acts similarly to anti-mu in stimulating a proliferative response by later maturing B cells, which are characterized by a high density of sIgD.
mesh_terms: D000818:Animals; D000888:Antibodies, Anti-Idiotypic / Q000276:immunology*; D000911:Antibodies, Monoclonal / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology; D002455:Cell Division; D006041:Goats / Q000276:immunology; D007140:Immunoglobulin Fab Fragments / Q000276:immunology; D007143:Immunoglobulin Heavy Chains / Q000276:immunology*; D007138:Immunoglobulin delta-Chains / Q000276:immunology*; D007148:Immunoglobulin mu-Chains / Q000276:immunology; D007700:Kinetics; D008213:Lymphocyte Activation; D008264:Macrophages / Q000276:immunology; D008297:Male; D051379:Mice; D011817:Rabbits / Q000276:immunology; D012995:Solubility; D013154:Spleen / Q000166:cytology
chemical_list: D000888:Antibodies, Anti-Idiotypic; D000911:Antibodies, Monoclonal; D007140:Immunoglobulin Fab Fragments; D007143:Immunoglobulin Heavy Chains; D007138:Immunoglobulin delta-Chains; D007148:Immunoglobulin mu-Chains