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19F CEST imaging probes for metal ion detection.

Qiaoli Peng1, Yaping Yuan, Huaibin Zhang

  • 1Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China. zxjiang@whu.edu.cn.

Organic & Biomolecular Chemistry
|July 26, 2017
PubMed
Summary

Novel fluorinated chelators were synthesized for 19F chemical exchange saturation transfer (19F CEST) MRI. A DTPA-derived probe enables sensitive and selective simultaneous detection of multiple metal ions.

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Area of Science:

  • * Chemical synthesis and analytical chemistry.
  • * Magnetic resonance imaging techniques.
  • * Biomedical sensing and diagnostics.

Background:

  • * Detecting metal ions is crucial in various biological and environmental applications.
  • * 19F chemical exchange saturation transfer (19F CEST) MRI offers a sensitive method for molecular imaging.
  • * Developing targeted probes for 19F CEST MRI remains an active area of research.

Purpose of the Study:

  • * To synthesize novel fluorinated chelators for 19F CEST MRI applications.
  • * To evaluate the performance of these chelators in detecting metal ions.
  • * To identify a highly sensitive and selective probe for simultaneous multi-metal ion detection.

Main Methods:

  • * Convenient gram-scale synthesis of a class of novel fluorinated chelators.
  • * Characterization of chelators for diverse fluorine contents and chelation properties.
  • * Evaluation of a DTPA-derived chelator as a 19F CEST MRI imaging probe.

Main Results:

  • * Successful synthesis of novel fluorinated chelators with varying properties.
  • * Identification of a DTPA-derived chelator exhibiting high sensitivity and selectivity.
  • * Demonstration of the probe's capability for simultaneous detection of multiple metal ions using 19F CEST MRI.

Conclusions:

  • * The developed fluorinated chelators are promising for 19F CEST MRI.
  • * The DTPA-derived chelator represents a novel and effective imaging probe for metal ion detection.
  • * This work advances the capability for simultaneous multi-metal ion sensing via MRI.