title: In vivo and in vitro anti-tumor effect of 14F7 monoclonal antibody.
abstract: The 14F7 monoclonal antibody (MAb) is an IgG(1) antibody that reacts specifically with GM3 (NeuGc) and with tissue sections of human tumors. We demonstrated here that this MAb is agglutinin that specifically agglutinated horse erythrocytes. Additionally, the capacity of 14F7 MAb to mediate cytotoxicity against GM3 (NeuGc)-positive murine myeloma cells, in vitro and in vivo, was evaluated. High concentrations of 14F7 MAb were needed to induce complement-dependent cytotoxicity (CDC) and antibody-dependent cell-mediated cytotoxicity (ADCC) against the murine myeloma cells. The most relevant finding was the ability of this MAb to directly kill the target cells without participation of complement. This cytotoxicity was dependent on the temperature and MAb concentration and the number of the target cells. In vivo, the passive treatment with 14F7 MAb produced a strong anti-tumor activity, similar to the anti-tumoral response obtained with standard chemotherapy treatment.
authors.affiliation: Center of Molecular Immunology, P.O. Box 16040, Havana 11600, Cuba. adriana@ict.cim.sld.cu
authors.forename: Adriana
authors.initials: A
authors.lastname: Carr
authors.forename: Circe
authors.initials: C
authors.lastname: Mesa
authors.forename: María
authors.initials: M
authors.lastname: del Carmen Arango
authors.forename: Ana María
authors.initials: AM
authors.lastname: Vázquez
authors.forename: Luis Enrique
authors.initials: LE
authors.lastname: Fernández
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology*; D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology* / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000276:immunology* / Q000494:pharmacology*; D018827:Carcinoma, Lewis Lung / Q000188:drug therapy; D008546:Melanoma, Experimental / Q000188:drug therapy; D051379:Mice; D008810:Mice, Inbred C57BL; D009101:Multiple Myeloma / Q000188:drug therapy; D009369:Neoplasms / Q000188:drug therapy*
chemical_list: D000276:Adjuvants, Immunologic; D000911:Antibodies, Monoclonal; D000970:Antineoplastic Agents