Incubation type Si-based planar ion channel biosensor

Tsuneo Urisu, Toshifumi Asano, Zhenlong Zhang, Hidetaka Uno, Ryugo Tero, Han Junkyu, Isoda Hiroko, Yusuke Arima, Hiroo Iwata, Koji Shibasaki, Makoto Tominaga

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


A new planar-type ion channel biosensor with the function of cell culture has been fabricated using silicon on an insulator substrate as the sensor chip material. Coating of the sensor chip with fibronectin was essentially important for cell incubation on the chip. Although the seal resistance was quite low (∼7 MΩ) compared with the pipette patch-clamp gigaohm seal, the whole-cell channel current of the transient receptor potential vanilloid type 1 (TRPV1) channel expressing HEK293 cells was successfully observed, with a good signal-to-noise ratio, using capsaicin as a ligand molecule.

Original languageEnglish
Pages (from-to)2703-2709
Number of pages7
JournalAnalytical and Bioanalytical Chemistry
Issue number8
Publication statusPublished - Aug 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry


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