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Anal Chem. 2012 Nov 6;84(21):9572-8. doi: 10.1021/ac302436y. Epub 2012 Oct 23.

High-performance binary protein interaction screening in a microfluidic format.

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  • 1Department of Bioengineering, Stanford University, Stanford, California 94305, United States.


The standard procedure to increase microfluidic chip performance is to grow the number of parallel test systems on the chip. This process is accompanied by miniaturizing biochemical workflows and micromechanical elements, which is often a major challenge for both engineering fields. In this work, we show that it is possible to substantially increase the runtime performance of a microfluidic affinity assay for protein interactions by simultaneously engineering fluid logics and assay chemistry. For this, synergistic effects between the micro- and chemical architecture of the chip are exploited. The presented strategy of reducing the runtime rather than size and volume of the mechanical elements and biological reagent compartments will, in general, be of importance for future analytical test systems on microfluidic chips to overcome performance barriers.

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