A system enabling isolation and electrical property characterization of circulating tumour cells

T. K. Chiu, Y. Zhao, D. Y. Chen, C. H. Hsieh, K. Wang, W. P. Chou, B. Y. Fan, J. B. Wang*, J. Chen, M. H. Wu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a system capable of characterizing electrical property of circulating tumour cells (CTCs) based on microfluidic impedance spectroscopy. Following negative selection, which consisted of red blood cell (RBC) lysis and CD45 depletion, suspected CTCs were left behind. Using a capillary tube, cells were then transferred directly into the entrance of the microfluidic device, and aspirated into a constriction channel for the quantification of specific membrane capacitance (Cspecific membrane) and cytoplasm conductivity (scytoplasm). Significant differences were found both in Cspecificmembrane and scytoplasmamong CTCs isolated from patients suffering from hepatic (Cspecific membrane=2.26 ± 0.69 μF/cm2and scytoplasm=0.88 ± 0.43 S/m, ncell=239), oral (1.82 ± 0.56 μF/cm2and 1.16 ± 0.49 S/m, ncell=269) and lung (1.55 ± 0.35 μF/cm2and 1.39 ± 0.69 S/m, ncell=468) cancers. These results validated the feasibility of the developed system, which may serve as a platform for the characterization of CTCs.

Original languageEnglish
Title of host publication20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016
PublisherChemical and Biological Microsystems Society
Pages293-294
Number of pages2
ISBN (Electronic)9780979806490
StatePublished - 2016
Event20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016 - Dublin, Ireland
Duration: 09 10 201613 10 2016

Publication series

Name20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016

Conference

Conference20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016
Country/TerritoryIreland
CityDublin
Period09/10/1613/10/16

Keywords

  • CTCs
  • Cytoplasm conductivity
  • Electrical property
  • Specific membrane capacitance

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