Probing living cells by terahertz attenuated total reflection. Application to permeabilization dynamics.

  • G. Gallot
  • , X. Zheng
  • , M. Grognot
  • , A. Azan
  • , T. Garcia-Sanchez
  • , L. Descamps
  • , L. M. Mir

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

Abstract

Using attenuated total reflection (ATR) in the terahertz domain, we demonstrate non-invasive, non-staining real time measurements of cytoplasm leakage during permeabilization of live epithelial cells by saponin, and after electropermeabilization. The origin of the contrast observed between cells and culture medium is addressed by both experimental and theoretical approaches, and gives access to permeabilization dynamics of live cells in real time. We show that terahertz modalities are more sensitive than fluorescence microscopy which is the reference optical technique for electropermeabilization. We propose analytical models for the influx and efflux of non-permeant molecules through permeabilized cell membranes.

Original languageEnglish
Title of host publicationEuropean Conference on Biomedical Optics, ECBO_2019
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781510628397
DOIs
Publication statusPublished - 1 Jan 2019
EventEuropean Conference on Biomedical Optics, ECBO_2019 - Munich, Netherlands
Duration: 23 Jun 201925 Jun 2019

Publication series

NameOptics InfoBase Conference Papers
VolumePart F142-ECBO 2019
ISSN (Electronic)2162-2701

Conference

ConferenceEuropean Conference on Biomedical Optics, ECBO_2019
Country/TerritoryNetherlands
CityMunich
Period23/06/1925/06/19

Keywords

  • ATR
  • Cell membrane permeabilization
  • Detergent
  • Electropermeabilization
  • Terahertz

Fingerprint

Dive into the research topics of 'Probing living cells by terahertz attenuated total reflection. Application to permeabilization dynamics.'. Together they form a unique fingerprint.

Cite this