A Novel Magnetoelastic Immunosensor for Ultrasensitively Detecting Carcinoembryonic Antigen.

A Novel Magnetoelastic Immunosensor for Ultrasensitively Detecting Carcinoembryonic Antigen.
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一种用于超灵敏检测癌胚抗原的新型磁弹免疫传感器

DOI:
10.1186/s11671-018-2632-0
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发表时间:
2018-08-29
影响因子:
--
通讯作者:
Sang S
Sang S
中科院分区:
材料科学3区
文献类型:
--
作者:
Zhang Y;Guo X;Fan L;Zhang Q;Sang S

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为超灵敏检测癌胚抗原,研制了一种新型无线免疫传感器。通过模拟和实验,确定了作为磁弹性敏感元件的微芯片的最佳尺寸。金颗粒独特的效应、信号放大和生物相容性决定了传感器的稳定性和灵敏度。此外,为了提高灵敏度,抗体和BSA的工作浓度分别选择为50 mg/mL和0.1%。原子力显微镜成像为生物分析提供了线索。该纳米磁弹性免疫传感器对癌胚抗原(CEA)浓度的对数在0.1~100 ng/mL范围内呈线性响应,检测下限为2.5 pg/mL。所设计的生物传感器对CEA具有良好的稳定性和灵敏度。
A novel wireless immunosensor is developed for the ultra-sensitive detection of carcinoembryonic antigen. The optimum dimension of the microchips, as magnetoelastic sensitive units, was evaluated by simulation and experiments. The unique effects signal amplification and biocompatibility of gold particles contribute to the stability and sensitivity of the sensor. Furthermore, to enhance sensitivity, the working concentrations of antibody and BSA are selected to be 50 mg/mL and 0.1%, respectively. Atom force microscope imaging sheds light on the biological analysis. The Nano-magnetoelastic immunosensor exhibits a linear response to the logarithm of carcinoembryonic antigen (CEA) concentrations ranging from 0.1 to 100 ng/mL, with a detection limit of 2.5 pg/mL. The designed biosensor has merits of excellent stability and sensitivity towards CEA.
DOI: 10.1158/1078-0432.ccr-07-5261
发表时间: 2009-03-01
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影响因子: --
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