Establishment of the mouse B cell mitogenic-and co-mitogenic monoclonal antibodies / 中国免疫学杂志

ABSTRACT

Sibirian hamster was immunized with mouse B myeloma cell(A20)lysate,and the im-munized spleen cells were fused with mouse myeloma cell line X63Ag8653.Four mono-clonal antibodies were thus obtained.While two(4B4 and 3C11)antibodies were shown to have strong direct mitogenic ac-tivity on mouse spleen B cells,all 4 antibodies could have synergistic effect in coope-rate with suboptimal doses of LPS to activate B cells.The mitogenic activity is ac-cessory cell independent.Four different surface molecules,as judged by both immuno-precipitating and binding assay,were compared.And the usefulness of these antibodiesin studying B cell activation and their functions were discussed.