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Issue 12, 2016
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Automated sample preparation in a microfluidic culture device for cellular metabolomics

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Abstract

Sample pretreatment in conventional cellular metabolomics entails rigorous lysis and extraction steps which increase the duration as well as limit the consistency of these experiments. We report a biomimetic cell culture microfluidic device (MFD) which is coupled with an automated system for rapid, reproducible cell lysis using a combination of electrical and chemical mechanisms. In-channel microelectrodes were created using facile fabrication methods, enabling the application of electric fields up to 1000 V cm−1. Using this platform, average lysing times were 7.12 s and 3.03 s for chips with no electric fields and electric fields above 200 V cm−1, respectively. Overall, the electroporation MFDs yielded a ∼10-fold improvement in lysing time over standard chemical approaches. Detection of multiple intracellular nucleotides and energy metabolites in MFD lysates was demonstrated using two different MS platforms. This work will allow for the integrated culture, automated lysis, and metabolic analysis of cells in an MFD which doubles as a biomimetic model of the vasculature.

Graphical abstract: Automated sample preparation in a microfluidic culture device for cellular metabolomics

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Supplementary files

Article information


Submitted
28 Jan 2016
Accepted
20 Apr 2016
First published
20 Apr 2016

Analyst, 2016,141, 3858-3865
Article type
Paper
Author version available

Automated sample preparation in a microfluidic culture device for cellular metabolomics

L. A. Filla, K. L. Sanders, R. T. Filla and J. L. Edwards, Analyst, 2016, 141, 3858
DOI: 10.1039/C6AN00237D

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