Cell-based microarrays are promising tools for high-throughput functional analysis of gene products, but their application has been limited to adherent cells due to the difficulty in immobilization of non-adherent cells. Herein, we have introduced our techniques that can rapidly and strongly immobilize non-adherent cells and can allow the transfection of non-adherent cells with plasmid cDNA and small interfering RNA (siRNA) at a defined position on substrates with poly(ethylene-glycol)-lipid-modified surface.
