Abstract

Continuous recording of intracellular activities in single cells is required for deciphering rare, dynamic and heterogeneous cell responses, which are missed by population or brief single-cell recording. Even if the field of intracellular recording is constantly proceeding, several technical challenges are still remained to conquer this important approach. Here, we demonstrate long-term intracellular recording by combining a vertical nanowire multi electrode array (VNMEA) with optogenetic stimulation to minimally disrupt cell survival and functions during intracellular access and measurement. We synthesized small-diameter and high-aspect-ratio silicon nanowires to spontaneously penetrate into single cells, and used light to modulate the cell’s responsiveness. The light-induced intra- and extracellular activities of individual optogenetically-modified cells were measured simultaneously, and each cell showed distinctly different measurement characteristics according to the cell-electrode configuration. Intracellular recordings were achieved continuously and reliably without signal interference and attenuation over 24 hours. The integration of two controllable techniques, vertically grown nanowire electrodes and optogenetics, expands the strategies for discovering the mechanisms for crucial physiological and dynamic processes in various types of cells.

Details

Title
Long-term Intracellular Recording of Optogenetically-induced Electrical Activities using Vertical Nanowire Multi Electrode Array
Author
Yoo Jisoo 1 ; Kwak Hankyul 2 ; Kwon Juyoung 1 ; Ha, Go Eun 2 ; Lee, Elliot H 2 ; Song Seungwoo 3 ; Jukwan, Na 1 ; Hyo-Jung, Lee 1 ; Lee, Jaejun 1 ; Hwangbo Areum 2 ; Cha Eunkyung 1 ; Chae Youngcheol 3 ; Cheong Eunji 4 ; Heon-Jin, Choi 1 

 Yonsei University, Department of Materials Science and Engineering, Seoul, Republic of Korea (GRID:grid.15444.30) (ISNI:0000 0004 0470 5454) 
 Yonsei University, Department of Biotechnology, College of Life Science and Biotechnology, Seoul, Republic of Korea (GRID:grid.15444.30) (ISNI:0000 0004 0470 5454) 
 Yonsei University, Department of Electrical and Electronic Engineering, Seoul, Republic of Korea (GRID:grid.15444.30) (ISNI:0000 0004 0470 5454) 
 Yonsei University, Department of Biotechnology, College of Life Science and Biotechnology, Seoul, Republic of Korea (GRID:grid.15444.30) (ISNI:0000 0004 0470 5454); Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, Republic of Korea (GRID:grid.410720.0) (ISNI:0000 0004 1784 4496) 
Publication year
2020
Publication date
2020
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2375481044
Copyright
This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.