Monitoring the morphological evolution of giant vesicles by azo dye-based sum-frequency generation (SFG) microscopy

Atsuya Momotake, Takaha Mizuguchi, Mafumi Hishida, Yasuhiko Yamamoto, Masato Yasui, Mutsuo Nuriya

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In the present work, dye-based sum-frequency generation (SFG) imaging using sodium 4-[4-(dibutylamino)phenylazo]benzenesulfonate (butyl orange, BO) as a new non-fluorescent specific azo dye is employed to monitor the morphological evolution of giant vesicles (GVs). After loading BO to the membrane of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) single-component GVs, the outermost membranes were clearly visualized using SFG microscopy, which provided images of the distinct outer and inner faces of the lipid bilayers. In addition, SFG-active vesicles were detected also inside the GVs, depending on the dye concentrations. The dye-based SFG imaging technique provided experimental evidence that these oligolamellar vesicles containing an SFG-active interior had been formed after BO loading. The formation process of the oligolamellar vesicles with inner SFG-active vesicles was successfully monitored, and their formation mechanism was discussed.

本文言語English
論文番号110716
ジャーナルColloids and Surfaces B: Biointerfaces
186
DOI
出版ステータスPublished - 2020 2

ASJC Scopus subject areas

  • バイオテクノロジー
  • 表面および界面
  • 物理化学および理論化学
  • コロイド化学および表面化学

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