Ultrasensitive determination of alpha-glucosidase activity using CoOOH nanozymes and its application to inhibitor screening
文献类型: 外文期刊
第一作者: Ma, Demiao
作者: Ma, Demiao;Ge, Jia;Wang, Ang;Ma, Demiao;Li, Jingxian;Cai, Ren;Ma, Demiao;Li, Jingxian;Cai, Ren;Zhai, Wenlei;Yang, Hongfen
作者机构:
期刊名称:JOURNAL OF MATERIALS CHEMISTRY B ( 影响因子:7.0; 五年影响因子:6.5 )
ISSN: 2050-750X
年卷期: 2023 年 11 卷 12 期
页码:
收录情况: SCI
摘要: In this work, a novel method for the colorimetric sensing of alpha-glucosidase (alpha-Glu) activity was developed based on CoOOH nanoflakes (NFs), which exhibit efficient oxidase-mimicking activity. Colorless 3,3 ',5,5 '-tetramethylbenzidine (TMB) can be oxidized by CoOOH NFs into blue-colored oxidized TMB (oxTMB) in the absence of H2O2. l-Ascorbic acid-2-O-alpha-d-glucopyranose (AAG) can be hydrolysed by alpha-glucosidase to produce ascorbic acid, resulting in a significant decrease of catalytic activity of CoOOH NFs. Thus, a colorimetric alpha-glucosidase activity detection method was designed with a limit of detection of 0.0048 U mL(-1). Furthermore, the designed sensing platform exhibits favorable applicability for the alpha-glucosidase (alpha-Glu) activity assay in real samples. Meanwhile, this method can be expanded to study the inhibitors of alpha-Glu. Finally, the as-proposed method combined with a smartphone would be a color recognizer, which was successfully applied for the determination of alpha-Glu activity in human serum samples.
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