In this paper, we report an integrated microfluidic chip for drug-metabolism. The chip contains three layers: the top PDMS cover, the middle quartz slide with microchannels and microwells, the bottom PDMS layer for cell culture. Microsomes isolated from human liver were encapsulated in microwells by sol-gel method.Using this design, the determination of the metabolites and drug cytotoxicity assessment can be carried out within a single microfluidic device, providing an alternative technique for the high-throughput parallel drug screening and drug interactions in the metabolic pathways.
Glass microchips with different structures and functions were fabricated in our laboratory.The basic characteristic of the home-made microchips was evaluated,such as the quality of the etched microchannels,reproducibility of electrophoretic separation,and life time etc..The migration time RSD for Rhodamine B in the same or different microchannels were 2.31% or 2.44%,respectively.The column efficiency in the same glass microchip didn′t declined obviously until 200 consecutive running.Compared to the glass microchip made by Micralyne,the similar separation results were obtained on both kinds of microchips.Since,the cost of the home-made glass microchips is much lower, our home-made glass microchips show a great advantage(over) the commercial microchips in terms of the performance to cost.
