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A ratiometric fluorescent probe for alkaline phosphatase with high sensitivity

  • Yang Yangyang*
  • , Zhang Chen
  • , Pan Rizhao
  • , Zhang Shiwei
  • , Yao Shengtao
  • , Tang Yao
  • , Zhu Weilong
  • , Wang Liyue
  • , Zhu Weiping
  • , Xu Yufang
  • , Qian Xuhong*
  • *Corresponding author for this work
  • East China University of Science and Technology

Research output: Contribution to journal › Article › peer-review

Abstract

Alkaline phosphatase (ALP) is one of essential biomarkers in mammalian tissue. Here we report a ratiometric probe for ALP, which is rationally designed and synthesized by employing ESIPT fluorophore N-(3-(benzo[d]thiazol-2-yl)-4-hydroxyphenyl)benzamide (BTHPB). The enzymatic dephosphorylation converts the probe to BTHPB, which exhibits a large spectral red-shift (120 nm), allowing extremely high sensitivity of ALP sensing at 0.004 mU/mL. The probe also shows excellent biocompatibility and has been applied for monitoring the endogenic ALP in living cells.

Original languageEnglish
Pages (from-to)125-128
Number of pages4
JournalChinese Chemical Letters
Volume31
Issue number1
DOIs
StatePublished - Jan 2020
Externally publishedYes

Keywords

  • Alkaline phosphatase
  • Biomarker
  • ESIPT
  • Fluorescent probe
  • Ratiometric

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