Test system for trifunctional antibodies in 3D MCTS culture.

The aim of the present study was to assess the feasibility of a 3D tumor cell culture model, that is, multicellular tumor spheroids (MCTSs) as an adequate model for micrometastases and therefore as a pharmacological model for efficacy testing of trifunctional therapeutic antibodies. Unlike conventional monolayer cultures, spheroids allow researchers to study parameters, such as 3D cell shape, 3D cell arrangement and microenvironment, and penetration efficiency of defense cells that may largely influence the efficacy of antibody treatment in vivo. The authors established a long-term coculture of human MCTSs with peripheral blood mononuclear cells (PBMCs) to test the anticancer effect of the …