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Sensors and Materials, Volume 31, Number 1(1) (2019)
Copyright(C) MYU K.K. All Rights Reserved.
S&M1751 Research Paper of Special Issue
Published: January 15, 2019
Control of Cell Adhesion and Detachment on a Nanostructured Scaffold Composed of a Light-responsive Gas-generation Film [PDF]
Yoshinori Akagi, Shuichiro Matsumoto, and Shohei Yamamura
(Received August 6, 2018; Accepted December 12, 2018)
Keywords: cell adhesion, cell detachment, nanostructure, azido polymer, cancer cell
The standard method of detaching adherent cells from a culture substrate involves the application of trypsin to digest the extracellular matrix. However, the trypsin treatment is time-consuming and sometimes causes damage to the cells when harvesting cells from a culture dish. We have developed a novel nanostructured scaffold composed of a light-responsive gas-generating film (gas-generation nanoscaffold) that serves the dual functions of cell adhesion and cell detachment. Cell adhesion was based on the nanostructured surface topography with numerous holes of 230 nm diameter and 200 nm depth; the structure was created by soft lithography. Cell detachment was accomplished by the light irradiation of the photodecomposable polymer film to generate gas, which weakens the adhesive forces between the cells and the substrate. 11 µl of N2 gas was generated in 90 s and the gas-generation rate was 0.1 µl/s. It was found that twice as many human bronchioalveolar carcinoma cells (NCL-H1650) adhered to the nanoscaffold than to the same scaffold without the nanostructure. The nanoscaffold exhibited no cytotoxicity according to cell viability and cytotoxicity assays. After culturing the cells on the gas-generation nanoscaffold, they were irradiated with light to generate gas, which causes the cells on the film to detach. We successfully demonstrated cell adhesion and cell detachment on the novel gas-generation nanoscaffold. This novel material is expected to be useful as an alternative cell culture substrate without the need for the standard trypsin treatment.
Corresponding author: Yoshinori Akagi
This work is licensed under a Creative Commons Attribution 4.0 International License.
Cite this article
Yoshinori Akagi, Shuichiro Matsumoto, and Shohei Yamamura, Control of Cell Adhesion and Detachment on a Nanostructured Scaffold Composed of a Light-responsive Gas-generation Film, Sens. Mater., Vol. 31, No. 1, 2019, p. 89-98.
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