論文

国際誌
2020年12月9日

Multicolor Activatable Raman Probes for Simultaneous Detection of Plural Enzyme Activities.

Journal of the American Chemical Society
  • Hiroyoshi Fujioka
  • ,
  • Jingwen Shou
  • ,
  • Ryosuke Kojima
  • ,
  • Yasuteru Urano
  • ,
  • Yasuyuki Ozeki
  • ,
  • Mako Kamiya

142
49
開始ページ
20701
終了ページ
20707
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/jacs.0c09200

Raman probes based on alkyne or nitrile tags hold promise for highly multiplexed imaging. However, sensing of enzyme activities with Raman probes is difficult because few mechanisms are available to modulate the vibrational response. Here we present a general strategy to prepare activatable Raman probes that show enhanced Raman signals due to electronic preresonance (EPR) upon reaction with enzymes under physiological conditions. We identified a xanthene derivative bearing a nitrile group at position 9 (9CN-JCP) as a suitable scaffold dye, and synthesized four types of activatable Raman probes, which are targeted to different enzymes (three aminopeptidases and a glycosidase) and tuned to different vibrational frequencies by isotope editing of the nitrile group. We validated the activation of the Raman signals of these probes by the target enzymes and succeeded in simultaneous imaging of the four enzyme activities in live cells. Different cell lines showed different patterns of these enzyme activities.

リンク情報
DOI
https://doi.org/10.1021/jacs.0c09200
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/33225696
ID情報
  • DOI : 10.1021/jacs.0c09200
  • PubMed ID : 33225696

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