title: Humanized monoclonal antibody CAMPATH-1H: myeloma cell expression of genomic constructs, nucleotide sequence of cDNA constructs and comparison of effector mechanisms of myeloma and Chinese hamster ovary cell-derived material.
abstract: Expression of CAMPATH-1H, a humanized MoAb directed against an abundant surface antigen on human lymphocytes, has been studied using transfected myeloma cells. As the site of chromosome integration of DNA transfected into a cell is random we investigated the feasibility and frequency of hitting a 'jackpot' site for expression after co-transfection with CAMPATH-1H heavy and light chain constructs in genomic context. A cell line generating 40 micrograms/ml of CAMPATH-1H in spent culture supernatant was achieved. The full nucleotide sequence of the CAMPATH-1H heavy and light chain cDNA clones is also shown, in addition a comparison of the effector mechanisms, antibody dependent cellular cytotoxicity and complement dependent cytotoxicity, of myeloma cell and Chinese hamster ovary (CHO) cell-derived CAMPATH-1H is reported.
authors.affiliation: Department of Cell Biology, Wellcome Research Laboratories, Beckenham, UK.
authors.forename: J S
authors.initials: JS
authors.lastname: Crowe
authors.forename: V S
authors.initials: VS
authors.lastname: Hall
authors.forename: M A
authors.initials: MA
authors.lastname: Smith
authors.forename: H J
authors.initials: HJ
authors.lastname: Cooper
authors.forename: J P
authors.initials: JP
authors.lastname: Tite
mesh_terms: D000074323:Alemtuzumab; D000595:Amino Acid Sequence; D000818:Animals; D000911:Antibodies, Monoclonal / Q000235:genetics* / Q000276:immunology; D061067:Antibodies, Monoclonal, Humanized; D000912:Antibodies, Neoplasm; D000954:Antigens, Surface / Q000276:immunology*; D001483:Base Sequence; D016466:CHO Cells; D006224:Cricetinae; D004247:DNA / Q000737:chemistry*; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics; D007147:Immunoglobulin Light Chains / Q000235:genetics; D008969:Molecular Sequence Data; D009101:Multiple Myeloma / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D000912:Antibodies, Neoplasm; D000954:Antigens, Surface; D007143:Immunoglobulin Heavy Chains; D007147:Immunoglobulin Light Chains; D000074323:Alemtuzumab; D004247:DNA