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EDL Gated FET Biosensor Array for the Investigation of Ion Channels and Bioelectric Signals of Circulating Tumor Cells

  • Anil Kumar Pulikkathodi
  • , Indu Sarangadharan
  • , Yi-Hong Chen
  • , Gwo-Bin Lee
  • , Yu-Lin Wang

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

In the present work we have designed, fabricated and characterized an EDL FET biosensor for detection and enumeration of CTCs and to investigate of bioelectric signals of captured cells. We monitor transmembrane potential changes of the cell and use this methodology to study the functioning of ion channels. Our FET biosensor offers high sensitivity with single cell resolution, without any sample pre-treatments in physiological salt concentrations, since it is EDL gated. The investigation of cellular and sensor response in different test environments, showed that sensor response changes as the transmembrane potential of cell changes. This was confirmed by causing step depolarizations in cell and recording the corresponding sensor response. The effect of cadmium as a calcium channel blocker is investigated. This cell based EDL FET biosensor has bright prospects in the study of fundamental cell biology, cell based diagnostic platforms, and drug discovery and development.
Original languageEnglish
Title of host publicationSolid-State Electronics and Photonics in Biology and Medicine 5
EditorsY.-L. Wang, M. J. Deen, A. M. Hoff
PublisherElectrochemical Society Inc.
Pages15-23
ISBN (Print)9781607685395, 9781607688372
DOIs
Publication statusPublished - May 2018
Externally publishedYes
Event233rd Electrochemical Society (ECS) Meeting: Solid-State Electronics and Photonics in Biology and Medicine 5 - Seattle, United States
Duration: 13 May 201817 May 2018
https://www.electrochem.org/233

Publication series

NameECS Transactions
Number9
Volume85
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference233rd Electrochemical Society (ECS) Meeting
PlaceUnited States
CitySeattle
Period13/05/1817/05/18
Internet address

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