title: Recombinant humanized anti-CD40 monoclonal antibody triggers autologous antibody-dependent cell-mediated cytotoxicity against multiple myeloma cells.
abstract: Multiple myeloma (MM) is currently incurable, and novel therapies are needed. In this study, we examined a novel recombinant humanized monoclonal antibody against CD40 (rhuCD40 mAb) and demonstrate for the first time that rhuCD40 mAb induces antibody-dependent cell-mediated cytotoxicity (ADCC) against CD40-positive MM cells. Importantly, we show that rhuCD40 mAb induces autologous ADCC against primary patient MM cells, without triggering ADCC against normal B cells. This study, therefore, both demonstrates that rhuCD40 mAb triggers autologous ADCC against patient MM cells and provides the framework for the clinical evaluation of rhuCD40 mAb immunotherapy to improve patient outcome in MM.
authors.affiliation: Jerome Lipper Multiple Myeloma Center, Department of Medical Oncology, Dana-Farber Cancer Institute, and Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Hayashi
authors.forename: Steven P
authors.initials: SP
authors.lastname: Treon
authors.forename: Teru
authors.initials: T
authors.lastname: Hideshima
authors.forename: Yu-Tzu
authors.initials: YT
authors.lastname: Tai
authors.forename: Masaharu
authors.initials: M
authors.lastname: Akiyama
authors.forename: Paul
authors.initials: P
authors.lastname: Richardson
authors.forename: Dharminder
authors.initials: D
authors.lastname: Chauhan
authors.forename: Iqbal S
authors.initials: IS
authors.lastname: Grewal
authors.forename: Kenneth C
authors.initials: KC
authors.lastname: Anderson
mesh_terms: D000911:Antibodies, Monoclonal / Q000627:therapeutic use; D000920:Antibody-Dependent Cell Cytotoxicity; D019013:CD40 Antigens / Q000627:therapeutic use*; D006801:Humans; D007167:Immunotherapy / Q000379:methods*; D009101:Multiple Myeloma / Q000628:therapy*; D011994:Recombinant Proteins / Q000627:therapeutic use
chemical_list: D000911:Antibodies, Monoclonal; D019013:CD40 Antigens; D011994:Recombinant Proteins