3D printed microfluidic devices for lipid bilayer recordings. Issue 5 (8th February 2022)

• Record Type: Journal Article
• Authors: Ogishi, Kazuto; Osaki, Toshihisa; Morimoto, Yuya; Takeuchi, Shoji
• Is Part Of: Lab on a chip. Volume 22:Issue 5(2022)
• Page Start: 890
• Page End: 898
• Publication Date: 2022-02-08
• Subjects: Miniature electronic equipment -- Periodicals; Combinatorial chemistry -- Periodicals; Biotechnology -- Periodicals; 543.0813
• DOI: 10.1039/d1lc01077h
• Languages: English
• ISSNs: 1473-0197

Abstract

Abstract : This paper describes 3D printed microfluidic devices for the rapid implementation of lipid bilayer recordings. We examined 3D printing materials from the perspective of measurement performances and presented feasible applications. Abstract : This paper verifies the single-step and monolithic fabrication of 3D structural lipid bilayer devices using stereolithography. Lipid bilayer devices are utilized to host membrane proteins in vitro for biological assays or sensing applications. There is a growing demand to fabricate functional lipid bilayer devices with a short lead-time, and the monolithic fabrication of components by 3D printing is highly anticipated. However, the prerequisites of 3D printing materials which lead to reproducible lipid bilayer formation are still unknown. Here, we examined the feasibility of membrane protein measurement using lipid bilayer devices fabricated by stereolithography. The 3D printing materials were characterized and the surface smoothness and hydrophobicity were found to be the relevant factors for successful lipid bilayer formation. The devices were comparable to the ones fabricated by conventional procedures in terms of measurement performances like the amplitude of noise and the waiting time for lipid bilayer formation. We further demonstrated the extendibility of the technology for the functionalization of devices, such as incorporating microfluidic channels for solution exchangeability and arraying multiple chambers for robust measurement.