Abstract
At Research Genetic Cancer Centre, we have developed a novel method for the production of human monoclonal antibodies against a specific antigen of our choice (c-met) using isolated human blood cells. By mimicking nature, dendritic, CD4 and CD19 cells from healthy volunteers were driven towards Th2 immunity. Cell activation was succeeded by a cytokine cocktail, and IgG production was promoted by IgG class switching factors. IgG secretion was determined using both enzyme linked immunosorbent assay (ELISA) and Western blot as well as immunoglobulin heavy chain gamma polypeptide gene expression. Secreted antibody was further purified by affinity column chromatography against c-met peptide. Anti-c-met activity was determined using the purified antibody as primary antibody for c-met detection by ELISA, Western blot and flow cytometry. Finally, anti-c-met antibody efficiency was determined by MCF-7 viability assay. Plasma cell formation and IgG secretion took place after 6 days of culture. Plasma cells produced anti-c-met IgG antibody that significantly decreased MCF-7 breast cancer cell proliferation. To our knowledge, this is the first platform of its kind, generating fully human antibodies-on-demand using patient's own cells, bringing personalized, targeted therapy for cancer one step closer.
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