Evidence of Cytolysin A nanopore incorporation in mammalian cells assessed by a graphical user interface

Florian Leonardus Rudolfus Lucas*, Rocio K Finol-Urdaneta, Toon Van Thillo, Jeffrey R McArthur, Nieck Jordy van der Heide, Giovanni Maglia, Peter Dedecker, Olaf Strauss, Carsten Wloka*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Technologies capable of assessing cellular metabolites with high precision and temporal resolution are currently limited. Recent developments in the field of nanopore sensors allow the non-stochastic quantification of metabolites, where a nanopore is acting as an electrical transducer for selective substrate binding proteins (SBPs). Here we show that incorporation of the pore-forming toxin Cytolysin A (ClyA) into the plasma membrane of Chinese hamster ovary cells (CHO-K1) results in the appearance of single-channel conductance amenable to multiplexed automated patch-clamp (APC) electrophysiology. In CHO-K1 cells, SBPs modify the ionic current flowing though ClyA nanopores, thus demonstrating its potential for metabolite sensing of living cells. Moreover, we developed a graphical user interface for the analysis of the complex signals resulting from multiplexed APC recordings. This system lays the foundation to bridge the gap between recent advances in the nanopore field ( e.g., proteomic and transcriptomic) and potential cellular applications.

Original languageEnglish
Pages (from-to)16914–16923
Number of pages10
JournalNanoscale
Volume15
Issue number23
Early online date19-Oct-2023
DOIs
Publication statusPublished - Oct-2023

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