Multiplex real-time monitoring of cellular metabolic activity using a redox-reactive nanowire biosensor

L. C. Hsiung, V. Krivitsky, V. Naddaka, Y. K. Conroy, H. Peretz-Soroka, F. Patolsky

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

Abstract

We designed a redox-reactive nanowire biosensor for multiplex real-time monitoring of cellular metabolic activities. A field-effect transistor (FET) biosensor modified with 9,10-anthraquinone-2-sulfochloride detected reactive oxygen species (ROS); by ROS' oxidizing the modified monolayer, surface electron density was reduced to alter measured currents. Likewise, lactate metabolites were converted to peroxide by lactate oxidase (LOX) beforehand for sensing. Significances include: (1) the first nanowire sensing of metabolites in physiological solutions without preprocessing; (2) concentration-dependent sensing responses to H2O2 and lactate were verified to cover physiological concentration ranges; (3) correlating metabolic activities with proliferation rates; and (4) validating pharmaceutical mechanisms of anticancer agents.

Original languageEnglish
Title of host publication17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
Pages1959-1961
Number of pages3
StatePublished - 2013
Event17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013 - Freiburg, Germany
Duration: 27 Oct 201331 Oct 2013

Publication series

Name17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
Volume3

Conference

Conference17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
Country/TerritoryGermany
CityFreiburg
Period27/10/1331/10/13

Keywords

  • Biosensor
  • Field-effect transistor
  • Metabolites
  • Multiplex
  • Nanowire array
  • Real-time sensing

All Science Journal Classification (ASJC) codes

  • Bioengineering

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