Analytical and Bioanalytical Chemistry

, Volume 396, Issue 7, pp 2667–2674

A thiol-selective fluorogenic probe based on the cleavage of 4-methylumbelliferyl-2’,4’,6’-trinitropheyl ether

  • Xiao-Feng Yang
  • Zhuan Su
  • Chenghai Liu
  • Haiping Qi
  • Minglei Zhao
Original Paper

DOI: 10.1007/s00216-010-3475-4

Cite this article as:
Yang, X., Su, Z., Liu, C. et al. Anal Bioanal Chem (2010) 396: 2667. doi:10.1007/s00216-010-3475-4

Abstract

A new fluorescent probe 1,4-methylumbelliferyl-2′,4′,6′-trinitropheyl ether (Probe 1) was designed and synthesized. Probe 1 was a nonfluorescent compound and was synthesized via the one-step reaction of 4-methylumbelliferone (4-MU) with 1-chloro-2,4,6-trinitrobenzene. Upon mixing with biothiols under neutral aqueous conditions, the 2,4,6-trinitrophenyl group of 1 was efficiently removed, and the emissive free dye 4-MU was released, hence leading to a dramatic increase in fluorescence emission of the reaction mixture. A good linear relationship was obtained from 0.1 to 4.0 μmol L−1 for cysteine (Cys), from 0.1 to 3.0 μmol L−1 for homocysteine (Hcy), and from 0.2 to 3.0 μmol L−1 for glutathione (GSH), respectively. The detection limits of Cys, Hcy, and GSH were 24.3, 35.6, and 26.8 nmol L−1, respectively. Furthermore, probe 1 was highly selective for biothiols without the interference of some biologically relevant analytes and has been applied to detecting biothiols in human serum samples.

https://static-content.springer.com/image/art%3A10.1007%2Fs00216-010-3475-4/MediaObjects/216_2010_3475_Figa_HTML.gif
Figure

Fluorescence response of probe 1 in the presence of thiols

Keywords

4-MethylumbelliferoneThiols2,4,6-TrinitrophenolFluorescent probe

Supplementary material

216_2010_3475_MOESM1_ESM.pdf (618 kb)
ESM 1(PDF 618 kb)

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Xiao-Feng Yang
    • 1
  • Zhuan Su
    • 1
  • Chenghai Liu
    • 1
  • Haiping Qi
    • 1
  • Minglei Zhao
    • 1
  1. 1.Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Institute of Analytical Science, Department of ChemistryNorthwest UniversityXi’anChina