Journal
ELECTROPHORESIS
Volume 32, Issue 22, Pages 3172-3179Publisher
WILEY-BLACKWELL
DOI: 10.1002/elps.201100229
Keywords
Cell lysis; Microfluidics; Single cell
Funding
- NIH [5-RO1-GM0607905-03]
- Merck Co.
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A microfluidic device capable of rapidly analyzing cells in a high-throughput manner using electrical cell lysis is further characterized. In the experiments performed, cell lysis events were studied using an electron multiplying charge coupled device camera with high frame rate (>100?fps) data collection. It was found that, with this microfluidic design, the path that a cell follows through the electric field affects the amount of lysate injected into the analysis channel. Elimination of variable flow paths through the electric field was achieved by coating the analysis channel with a polyamine compound to reverse the electroosmotic flow (EOF). EOF reversal forced the cells to take the same path through the electric field. The improved control of the cell trajectory will reduce device-imposed bias on the analysis and maximizes the amount of lysate injected into the analysis channel for each cell, resulting in improved analyte detection capabilities.
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