A leakage current microsensor for detection of interaction between an electrolyte-entrapping liposome and protein

M. Noda, T. Asai, T. Shimanouchi, K. Yamashita, H. Umakoshi, M. Okuyama, R. Kubo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We have newly made a specific biomolecule microsensor measuring leakage current and impedance with minute liposome solution that interacts with biomolecules such as protein. The microsensor was fabricated with a Si surface-bulk-micromachining process. K4[Fe(CN)6] solution was entrapped inside of liposome of 1,2-dipalmitoyl-sn-glycero-3-phosphocholline (DPPC) and Carbonic Anhydrase from Bovine (CAB) was used as added protein for the interaction. A clear leakage in nA order was observed for the CAB, indicating the microsensor detects the CAB through the liposome-protein interaction. The detectivity increased by about 7 times and the volume of solution was decreased by about 10,000 from the previous result.

Original languageEnglish
Title of host publicationProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages317-319
Number of pages3
ISBN (Print)9780979806421
Publication statusPublished - 2009
Externally publishedYes
Event13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009 - Jeju, Korea, Republic of
Duration: Nov 1 2009Nov 5 2009

Publication series

NameProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Other

Other13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009
Country/TerritoryKorea, Republic of
CityJeju
Period11/1/0911/5/09

Keywords

  • Electrolyte
  • Interaction
  • Leakage current
  • Liposome
  • Protein

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

Fingerprint

Dive into the research topics of 'A leakage current microsensor for detection of interaction between an electrolyte-entrapping liposome and protein'. Together they form a unique fingerprint.

Cite this