Microalbuminuria sensitive near-infrared AIE probe for point-of-care evaluating kidney diseases  

作　　者：Zhirong Zhu Xiaoyan Chen Hongze Liao Li Li Haojian Yang Qi Wang Wei-Hong Zhu 

机构地区：[1]Shanghai Key Laboratory of Functional Materials Chemistry,Key Laboratory for Advanced Materials and Institute of Fine Chemicals,Joint International Research Laboratory of Precision Chemistry and Molecular Engineering,Feringa Nobel Prize Scientist Joint Research Center,Frontiers Science Center for Materiobiology and Dynamic Chemistry,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai,China [2]Department of Pathology,Ruijin Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,China [3]Research Center for Marine Drugs,Department of Pharmacy,Ren Ji Hospital,School of Medicine,Shanghai Jiao Tong University,Shanghai,China [4]Department of Laboratory Medicine,Ruijin Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,China

出　　处：《Aggregate》2024年第3期421-428,共8页聚集体（英文）

基　　金：National Key Research and Development Program of China,Grant/Award Number:2021YFA0910000;NSFC,Grant/Award Numbers:22222803,91959202,21974047;China Postdoctoral Science Foundation,Grant/Award Number:2022M72142;Shanghai Municipal Science and Technology Major Project,Grant/Award Number:2018SHZDZX03。

摘　　要：Urinary microalbumin(mALB)serves as an exceptionally sensitive indicator for the early detection of kidney damage,playing a pivotal role in identifying chronic renal failure and kidney lesions in individuals.Nevertheless,the currentfluores-cent methodologies for point-of-care(POC)diagnosis of mALB in real urine still exhibit suboptimal performance.Herein,the development and synthesis of QM-N2,an albumin-activated near-infrared(NIR)aggregation-induced emission(AIE)fluorescent probe,are presented.The strategic incorporation and positioning of quaternary ammonium salts within the quinoline-malononitrile(QM)scaffold sig-nificantly influence solubility and luminescence characteristics.Specifically,the quaternary ammonium salt-free variant,QM-OH,and the quaternary ammonium salt integrated at the donor function group(DFG)site,QM-N1,display limited solubility in aqueous solutions while demonstrating a distinctfluorescence signal.Conversely,the incorporation of quaternary ammonium salt at the conformational functional group(CFG)site in QM-N2 imparts superior dispersibility in water and reduces the initialfluorescence.Furthermore,the integration of a well-defined D-π-A struc-ture within QM-N2 enables itself with near-infrared emission,which is crucial for mitigating interference from autofluorescence present in urine samples.Upon inter-action with albumin,QM-N2 forms a tight bond with the IIA site of the subdomain of human serum albumin(HSA),inducing alterations in protein configuration and constraining the intrinsic motion offluorescent molecules.This interaction inducesfluorescence,facilitating the sensitive detection of trace albumin.Ultimately,QM-N2 is applied for POC testing of mALB using portable equipment,particularly in the diagnosis of mALB-related diseases,notably chronic renal failure.This positioning underscores its potential as an ideal candidate for self-health measurement at home or in community hospitals.

关 键 词：AIE-active probe kidney disease MICROALBUMINURIA point-of-care testing 

分 类 号：R692[医药卫生—泌尿科学]