Amino Acid‐Derived Sensors For Specific Zn2+ Detection Using Hyperpolarized 13C Magnetic Resonance Spectroscopy
2019
: Alterations in Zn2+ concentration are seen in normal tissues and in disease states, and for this reason imaging of Zn2+ is an area of active investigation. Herein, enriched [1-13 C]cysteine and [1-13 C2 ]iminodiacetic acid were developed as Zn2+ -specific imaging probes using hyperpolarized 13 C magnetic resonance spectroscopy. [1-13 C]cysteine was used to accurately quantify Zn2+ in complex biological mixtures. These sensors can be employed to detect Zn2+ via imaging mechanisms including changes in 13 C chemical shift, resonance linewidth, or T1 .
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