title: A human hybrid myeloma for production of human monoclonal antibodies.
abstract: We produced somatic cell hybrids between human myeloma cells and a lymphoblastoid cell line that is hypoxanthine phosphoribosyl transferase-deficient and ouabain-resistant. These hybrids were phenotypically similar to the human myeloma parental cells and grew as well as the human lymphoblastoid parental cells. After counterselection in 6-thioguanine, mutants that were 6-thioguanine-and ouabain-resistant were obtained, one of which was used as a fusion partner with lymphoblastoid B cells that produce anti-tetanus toxoid (TT) antibodies. These hybrids secreted human anti-TT monoclonal antibodies in much larger amounts than the parental lymphoblastoid cells, and were stable for a period of over 10 mo until the present time. Thus, by hybridizing plasmacytomas with lymphoblastoid cells, we constructed a fusion partner that secretes large amounts of immunoglobulin (Ig), grows at a fast rate, has a high fusion frequency, and supports the production of monoclonal antibodies over long periods of time. Moreover, anti-TT antibody-producing hybrids have been grown as solid tumors in irradiated BALB/c nude mice and then adopted to ascites growth, producing 1 to 8 mg of human immunoglobulin per 1 ml of ascites fluid.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000096:biosynthesis*; D001202:Ascitic Fluid / Q000276:immunology / Q000378:metabolism; D001402:B-Lymphocytes / Q000276:immunology / Q000378:metabolism / Q000648:ultrastructure; D002460:Cell Line; D002472:Cell Transformation, Viral; D004854:Herpesvirus 4, Human; D006801:Humans; D006825:Hybridomas / Q000276:immunology / Q000378:metabolism* / Q000648:ultrastructure; D051379:Mice; D008819:Mice, Nude; D010954:Plasmacytoma / Q000276:immunology / Q000378:metabolism* / Q000648:ultrastructure
chemical_list: D000911:Antibodies, Monoclonal