Citation: Lai Yuxuan, Zhang Chuanxiang, Deng Yan, Yang Gaojian, Li Song, Tang Congli, He Nongyue. A novel α-fetoprotein-MIP immunosensor based on AuNPs/PTh modified glass carbon electrode[J]. Chinese Chemical Letters, ;2019, 30(1): 160-162. doi: 10.1016/j.cclet.2018.07.011 shu

A novel α-fetoprotein-MIP immunosensor based on AuNPs/PTh modified glass carbon electrode

Lai Yuxuan ^a,1 ,
Zhang Chuanxiang ^b,1 ,
Deng Yan ^a,c,*,, ,
Yang Gaojian ^a ,
Li Song ^a ,
Tang Congli ^a ,
He Nongyue ^a,c,*,,

a.
Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China
b.
College of Packing and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
c.
State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China

Corresponding author: Deng Yan, hndengyan@126.com He Nongyue, nyhe1958@163.com

Received Date: 25 June 2018
Revised Date: 12 July 2018
Accepted Date: 19 July 2018
Available Online: 19 January 2018

Figures(4)

A new α-fetoprotein-MIP (AFP-MIP) immunosensor based on glass carbon electrode (GCE) modified with polythionine (PTh) and gold nanoparticles (AuNPs) was successfully fabricated for sensitive detection of α-fetoprotein (AFP). Through controlling electropolymerization, A "polydopamine (PDA)-AFP" complex was achieved applying AFP as template and dopamine (DA) as imprinted monomers. After elution, the specific cavities can adsorb the target molecules. Using differential pulse voltammetry (DPV) detection, the peak current decreased with the increase in concentration of AFP, and the linear response range of the AFP-MIP immunosensor was from 0.001 ng/mL to 800 ng/mL with the detection limit as low as 0.8138 pg/mL. The MIP immunosensor could become a new promising method for the detection of AFP. Furthermore, this MIP sensor was demonstrated in testing AFP in human serum samples with satisfactory results.
- Molecular imprinting polymer,
- α-Fetoprotein,
- Electropolymerization,
- Differential pulse voltammetry,
- Immunosensor
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