1. A Lipid Bilayer Formed on a Hydrogel Bead for Single Ion Channel Recordings
- Author
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Hirano, Minako, Yamamoto, Daiki, Asakura, Mami, Hayakawa, Tohru, Mise, Shintaro, Matsumoto, Akinobu, Ide, Toru, Hirano, Minako, Yamamoto, Daiki, Asakura, Mami, Hayakawa, Tohru, Mise, Shintaro, Matsumoto, Akinobu, and Ide, Toru
- Abstract
Ion channel proteins play important roles in various cell functions, making them attractive drug targets. Artificial lipid bilayer recording is a technique used to measure the ion transport activities of channel proteins with high sensitivity and accuracy. However, the measurement efficiency is low. In order to improve the efficiency, we developed a method that allows us to form bilayers on a hydrogel bead and record channel currents promptly. We tested our system by measuring the activities of various types of channels, including gramicidin, alamethicin, alpha-hemolysin, a voltage-dependent anion channel 1 (VDAC1), a voltage- and calcium-activated large conductance potassium channel (BK channel), and a potassium channel from Streptomyces lividans (KcsA channel). We confirmed the ability for enhanced measurement efficiency and measurement system miniaturizion.
- Published
- 2020