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Smart fluorescent probes for in situ imaging of enzyme activity: design strategies and applications
Han Wei1,2, Guanghua Wu3, Xin Tian1,2
1Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, 1 Jianshedong Road, Zhengzhou 450052, Henan, PR China.
Abstract:
Enzymes play critical roles in the physiological and pathological processes of living systems. To provide detailed pictures of enzyme activity at the molecular and cellular levels, interdisciplinary studies of chemistry and biology have led to the emergence of many smart fluorescent probes, which emit fluorescence or show a shifted signal only upon interaction with their targets. With distinct advantage of a higher signal-to-noise ratio than traditional 'always on' probes, smart fluorescent probes enable sensitive detection of enzymes with clinical significance. In this review, we summarize the design strategies and selected applications of smart fluorescent probes for in situ imaging of enzyme activity. Current challenges and future developments in this field are also discussed.
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