Millisecond treatment of cells using microfluidic devices via two-step carrier-medium exchange

Lab on a Chip
Masumi YamadaTeruo Okano

Abstract

We present herein a simple but versatile microfluidic system for the treatment of cells with millisecond chemical stimulus, by rapidly exchanging the carrier-medium of cells twice in a microchannel. A technique we refer to as 'hydrodynamic filtration' has been employed for the exchange of medium, in which the virtual width of flow in the microchannel determines the size of filtered cells/particles. The treatment time of cells could be rigidly adjusted by controlling the inlet flow rates and by changing the volume of the stimulating area in the microchannel. In the experiment, two types of microdevices were designed and fabricated, and at first, the ability for carrier-medium exchange was confirmed. As an application of the presented system, we examined the influence of the treatment time of HeLa cells with Triton X-100, a non-ionic surfactant used to solubilize the cellular membrane, on cell viability, varying the average treatment time from 17 to 210 ms. Both quantitative and qualitative analyses were performed to estimate the damage on cell membrane, demonstrating that the cell viability dramatically decreased when the treatment time was longer than approximately 40 ms. The obtained results demonstrated the ability of the pre...Continue Reading

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Citations

Oct 24, 2013·Analytical and Bioanalytical Chemistry·Mark D TarnNicole Pamme
Aug 21, 2014·Lab on a Chip·Cheuk-Wing LiMengsu Yang
Feb 25, 2010·Chemical Society Reviews·Andreas Lenshof, Thomas Laurell
Jul 17, 2012·Methods : a Companion to Methods in Enzymology·Julien AutebertJean-Louis Viovy
Mar 17, 2012·Biotechnology and Bioengineering·Jacob HannaErin Lemke
Jun 15, 2010·IEEE Transactions on Biomedical Circuits and Systems·J K ValleyM C Wu
Dec 20, 2011·Lab on a Chip·Kwang W OhEdward P Furlani
Nov 6, 2014·Lab on a Chip·Sixing LiTony Jun Huang
May 18, 2016·Analytical Chemistry·Sixing LiTony Jun Huang
Dec 4, 2013·Analytical Chemistry·Ya-Yu ChiangJonathan West
Jan 9, 2014·Analytical Chemistry·Jaideep S DudaniDino Di Carlo
Nov 2, 2016·Lab on a Chip·Bugra AyanTony Jun Huang
May 14, 2010·Analytical Chemistry·Georgette B Salieb-BeugelaarAndreas Manz
Sep 27, 2019·Analytical Chemistry·Byeongyeon KimSungyoung Choi

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