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Huang, Jiaguo; Xie, Chen; Zhang, Xiaodong; Jiang, Yuyan; Li, Jingchao; Fan, Quli; Pu, Kanyi
Angewandte Chemie International Edition, October 14, 2019, Volume: 58, Issue: 42Journal Article
Real‐time imaging of kidney function is important to assess the nephrotoxicity of drugs and monitor the progression of renal diseases; however, it remains challenging because of the lack of optical agents with high renal clearance and high signal‐to‐background ratio (SBR). Herein, a second near‐infrared (NIR‐II) fluorescent molecular semiconductor (CDIR2) is synthesized for real‐time imaging of kidney dysfunction in living mice. CDIR2 not only has a high renal clearance efficiency (≈90 % injection dosage at 24 h post‐injection), but also solely undergoes glomerular filtration into urine without being reabsorbed and secreted in renal tubules. Such a unidirectional renal clearance pathway of CDIR2 permits real‐time monitoring of kidney dysfunction in living mice upon nephrotoxic exposure. Thus, this study not only introduces a molecular renal probe but also provides useful molecular guidelines to increase the renal clearance efficiency of NIR‐II fluorescent agents. A second near‐infrared (NIR‐II) fluorescent molecular semiconductor is synthesized. The fluorophore not only has a high renal clearance efficiency, but also undergoes unidirectional glomerular filtration into urine, enabling real‐time NIR‐II fluorescence imaging of kidney dysfunction.
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