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Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
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Lipid bilayer microarray for parallel recording of transmembrane ion currents.

Bruno Le Pioufle1, Hiroaki Suzuki, Kazuhito V Tabata

  • 1LIMMS, CNRS-IIS, and CIRMM, IIS, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505 Japan.

Analytical Chemistry
|November 16, 2007
PubMed
Summary

This study presents a multiwell biochip for parallel ion current recording. The biochip enables high-throughput screening of transmembrane ion channels in stable artificial lipid bilayers.

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Area of Science:

  • Biophysics
  • Materials Science
  • Biotechnology

Background:

  • Transmembrane ion channels are crucial for cellular functions.
  • High-throughput screening methods are needed to study ion channel behavior.
  • Artificial lipid bilayers offer a platform for reconstituted ion channels.

Purpose of the Study:

  • To develop a multiwell biochip for simultaneous parallel recording of ion currents.
  • To create stable artificial lipid bilayers for ion channel incorporation.
  • To demonstrate the feasibility of high-throughput screening of transmembrane ion currents.

Main Methods:

  • Fabrication of a multiwell biochip using poly(p-xylylene) (parylene) films with micrometer-sized apertures.
  • Formation and optical confirmation of multiple stable bilayer lipid membranes (BLMs) in a 5x5 matrix.
  • Simultaneous parallel recording of ion currents through alamethicin and gramicidin pores in multiple BLMs.

Main Results:

  • Highly stable BLMs were formed using parylene films, lasting over 15 hours.
  • Simultaneous formation of BLMs in a 5x5 array was optically confirmed.
  • Feasibility of high-throughput screening of transmembrane ion currents was demonstrated.

Conclusions:

  • The developed multiwell biochip enables stable, simultaneous parallel recording of ion currents.
  • This technology facilitates high-throughput screening of ion channel activity in artificial lipid bilayers.
  • The biochip offers a robust platform for studying ion transport and developing new therapeutics.