A multiplexed immunoassay system based upon reciprocating centrifugal microfluidics

作者:Noroozi Zahra*; Kido Horacio; Peytavi Regis; Nakajima Sasaki Rie; Jasinskas Algimantas; Micic Miodrag; Felgner Philip L; Madou Marc J
来源:Review of Scientific Instruments, 2011, 82(6): 064303.
DOI:10.1063/1.3597578

摘要

A novel, centrifugal disk-based micro-total analysis system (mu TAS) for low cost and high throughput semi-automated immunoassay processing was developed. A key innovation in the disposable immunoassay disk design is in a fluidic structure that enables very efficient micro-mixing based on a reciprocating mechanism in which centrifugal acceleration acting upon a liquid element first generates and stores pneumatic energy that is then released by a reduction of the centrifugal acceleration, resulting in a reversal of direction of flow of the liquid. Through an alternating sequence of high and low centrifugal acceleration, the system reciprocates the flow of liquid within the disk to maximize incubation/hybridization efficiency between antibodies and antigen macromolecules during the incubation/hybridization stage of the assay. The described reciprocating mechanism results in a reduction in processing time and reagent consumption by one order of magnitude.

  • 出版日期2011-6