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A label-free electrochemical aptasensor based on Bi–Sb alloy materials for potential POCT of HER-2
Analyst ( IF 3.6 ) Pub Date : 2023-06-07 , DOI: 10.1039/d3an00606a
Shan-Shan Shi 1, 2 , Li-Ping Jia 2 , Wei Zhang 2 , Rong-Na Ma 2 , Lei Shang 2 , Xiao-Jian Li 2 , Huai-Qing Zhao 1 , Huai-Sheng Wang 2
Affiliation  

As a prognostic biomarker for breast cancer, human epidermal growth factor receptor 2 (HER-2) is of crucial diagnostic value. Here, a label-free electrochemical aptasensor was established for the ultrasensitive detection of HER-2 using a modified electrode of Bi–Sb alloy materials (Bi–Sb AMs). The performance of the aptasensor was enhanced greatly due to the introduction of Bi–Sb alloy materials (Bi–Sb AMs) with high conductivity. Furthermore, by integrating the aptasensor with the Sensit Smart U-disk electrochemical analyzer, the point-of-care testing (POCT) for HER-2 was realized. Under the optimal experimental parameters, the POCT analyzer showed a wide linear response from 0.01 pg mL−1 to 100 ng mL−1, with a low detection limit (LOD) of 5.96 fg mL−1 for the detection of HER-2. The presented POCT analyzer exhibited good specificity, stability, and reproducibility. Benefiting from the simple operation and rapid testing, the developed analyzer will have potential application in the prognostic diagnosis and treatment of breast cancer.

中文翻译:

基于 Bi-Sb 合金材料的无标记电化学适体传感器,用于 HER-2 的潜在 POCT

作为乳腺癌的预后生物标志物,人表皮生长因子受体2(HER-2)具有至关重要的诊断价值。在这里,使用 Bi-Sb 合金材料(Bi-Sb AMs)的修饰电极建立了一种无标记电化学适体传感器,用于超灵敏检测 HER-2。由于引入了高电导率的 Bi-Sb 合金材料(Bi-Sb AMs),适体传感器的性能大大增强。此外,通过将适配体传感器与Sensit智能U盘电化学分析仪集成,实现了HER-2的即时检测(POCT)。在最佳实验参数下,POCT分析仪在0.01 pg mL -1至100 ng mL -1范围内表现出较宽的线性响应,对HER-2的检测具有5.96 fg mL -1的低检出限(LOD) 。所提出的 POCT 分析仪具有良好的特异性、稳定性和重现性。得益于操作简单和快速检测,所开发的分析仪将在乳腺癌的预后诊断和治疗中具有潜在的应用。
更新日期:2023-06-07
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