title: The relationship between surface immunoglobulin isotype and immune function of murine B lymphocytes. I. Surface immunoglobulin isotypes on primed B cells in the spleen.
abstract: We investigated the ability of IgM-, IgD-, and IgG-bearing cells from the spleens of (BALB/c x C57BL/Ka)F1 mice primed to dinitrophenyl-bovine serum albumin (DNP-BSA) to restore the adoptive secondary anti-BSA and anti-DNP antibody responses. A rabbit anti-mouse IgD antiserum was prepared and the specificity documented by radioimmunoprecipitation, and cell surface staining. Purified populations of IgM-, IgD-, and IgG-bearing cells were prepared by immunofluorescent staining with isotype-specific reagents, and sorting on the fluorescence activated cell sorter. Bright or dull cells were transferred to irradiated syngeneic recipients which were challenged with DNP-BSA in saline. Unfractionated spleen cells restored an adoptive secondary serum antibody response which was all IgG (2-mercaptoethanol resistant). Purified IgM- or IgD-bearing cells restored both the secondary IgM and IgG antibody response. IgG-bearing cells restored only the IgG response. In addition, the IgG-bearing cells appear to suppress the adoptive secondary IgM response, since depletion of IgG-bearing cells from transferred spleen cells results in a marked increase in the adoptive IgM response.
mesh_terms: D000818:Animals; D000921:Antibody-Producing Cells; D001402:B-Lymphocytes / Q000276:immunology*; D002462:Cell Membrane / Q000276:immunology; D004136:Dinitrobenzenes; D005260:Female; D005455:Fluorescent Antibody Technique; D007106:Immune Sera; D007116:Immunization, Passive; D007072:Immunoglobulin D; D007074:Immunoglobulin G / Q000302:isolation & purification; D007075:Immunoglobulin M; D007156:Immunologic Memory; D007158:Immunologic Techniques; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D011947:Receptors, Antigen, B-Cell; D012710:Serum Albumin, Bovine / Q000276:immunology; D013154:Spleen / Q000276:immunology / Q000637:transplantation
chemical_list: D004136:Dinitrobenzenes; D007106:Immune Sera; D007072:Immunoglobulin D; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D011947:Receptors, Antigen, B-Cell; D012710:Serum Albumin, Bovine