Probing living cells permeabilization dynamics by terahertz attenuated total reflection

G. Gallot

doi:10.1117/12.2596166

1 August 2021 Probing living cells permeabilization dynamics by terahertz attenuated total reflection

G. Gallot

Proceedings Volume 11827, Terahertz Emitters, Receivers, and Applications XII; 118270S (2021) https://doi.org/10.1117/12.2596166
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

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 detergent 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.

Conference Presentation

Citation Download Citation

G. Gallot "Probing living cells permeabilization dynamics by terahertz attenuated total reflection", Proc. SPIE 11827, Terahertz Emitters, Receivers, and Applications XII, 118270S (1 August 2021); https://doi.org/10.1117/12.2596166

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