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An Aggregation‐induced Emission Probe Based on Host–Guest Inclusion Composed of the Tetraphenylethylene Motif and γ‐Cyclodextrin for the Detection of α‐Amylase
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-12-21 , DOI: 10.1002/asia.201801601
Jie Shi 1, 2 , Qianchun Deng 1 , Ya Li 1 , Zhaofei Chai 3 , Chuyun Wan 1 , Huijuan Shangguan 1 , Lu Li 2 , Bo Tang 2
Affiliation  

α‐Amylase, an essential biomarker in pancreas related diseases and perform a major role in carbohydrates metabolism. Hence, monitoring the dynamic changes of α‐amylase is crucial for better clinical diagnosis of diseases. However, the existing methods are suffered from low sensitivity, time consumption and indirect assay with aid of tool enzyme or inhibitor of competitive substrates, the rapid and non‐destructive sensing of α‐amylase in biological samples was highly desired. In this work, a very simple tetraphenylethylene motif and γ‐cyclodextrin based supramolecular fluometric sensing system was firstly established. This system has no emission signal in aqueous media for the freely rotation of phenyl rings in the cavity of γ‐cyclodextrin, but the AIE residues can be released in to water after the α‐amylase hydrolysing γ‐cyclodextrin, then turn on the fluorescence. In this system, the detection limit is calculated to be 0.007 U mL−1 in MES buffer with a linear range of 0–0.35 U mL−1, having excellent selectivity to α‐amylase compared to other proteins. At last, our probe can be applied to the quantitative analysis of α‐amylase in human serum, showing potential in point of care testing.

中文翻译:

基于四苯乙烯基序和γ-环糊精的宿主-客体包涵的聚集诱导发射探针用于α-淀粉酶的检测

α-淀粉酶是胰腺​​相关疾病中必不可少的生物标志物,在碳水化合物的代谢中起主要作用。因此,监测α-淀粉酶的动态变化对于更好地临床诊断疾病至关重要。但是,现有方法存在灵敏度低,耗时长,借助工具酶或竞争性底物抑制剂进行间接测定的问题,因此迫切需要对生物样品中的α-淀粉酶进行快速无损检测。在这项工作中,首先建立了一个非常简单的基于四苯乙烯基序和基于γ-环糊精的超分子荧光传感系统。该系统在水性介质中没有用于γ-环糊精腔中苯环自由旋转的发射信号,但是在α-淀粉酶水解γ-环糊精后,AIE残留物可以释放到水中,然后打开荧光。在该系统中,计算出的检出限为0.007 U mL在MES缓冲液中的-1,线性范围为0-0.35 U mL -1,与其他蛋白质相比,对α-淀粉酶具有优异的选择性。最后,我们的探针可用于人血清中α-淀粉酶的定量分析,显示出即时检验的潜力。
更新日期:2018-12-21
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