Analysis of interaction between liposome membranes induced by stress condition: Utilization of liposomes immobilized on indium tin oxide electrode

Haruyuki Ishii, Toshinori Shimanouchi, Hiroshi Umakoshi, Ryoichi Kuboi

Research output: Contribution to journalArticle

6 Citations (Scopus)


NBD-cholesterol (NBD-Ch)-modified liposome was immobilized on indium tin oxide (ITO) electrode via the covalent binding method. The transfer of NBD-Ch between the immobilized liposomes and the target liposomes was observed by using a fluorescent microscope. The addition of liposome suspension co-incubated with α-chymotrypsin or stimuli-responsive polymer to the surface of the above ITO electrode, enhanced the liposome-liposome interaction, resulting in the promotion of NBD-Ch transfer. The apparent transfer rate constant of NBD-Ch was found to be correlated with the index for the liposome-liposome interaction evaluated by an immobilized liposome chromatography. This suggests that the present method using the liposome-immobilized ITO electrode was effective to evaluate the liposome-liposome interaction induced by the protein or the stimuli-responsive polymer under stress conditions.

Original languageEnglish
Pages (from-to)425-428
Number of pages4
JournalJournal of Bioscience and Bioengineering
Issue number5
Publication statusPublished - Nov 2009
Externally publishedYes



  • α-Chymotrypsin
  • Fluorescence microscope
  • Immobilization of liposome
  • NBD-cholesterol
  • Stimuli responsive copolymer

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology
  • Bioengineering

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