期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 837, 期 -, 页码 246-253出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2019.02.043
关键词
Chemokines; CXCL7; Autoimmune diseases; Rheumatoid arthritis; Biomarkers; Click chemistry; Electrochemical immunosensor; Serum
资金
- Spanish Ministerio de Economia y Competitividad [CTQ2015-70023-R, CTQ2015-64402-C2-1-R]
- TRANSNANOAVANSENS Program from the Comunidad de Madrid [P2018/NMT-4349]
- AES-ISCIII program [PI17CIII/00045]
The first electrochemical immunosensor for the determination of CXCL7 (chemokine (C-X-C motif) ligand 7) autoimmune biomarker is reported in this work. Click chemistry-assisted antibodies immobilization was performed by reaction of azide functionalized-multi-walled carbon nanotubes (MWCNTs) and ethynyl-IgG onto screen-printed carbon electrodes. The capture antibodies were further immobilized onto IgG-MWCNTs conjugates. After a blocking step with casein, a sandwich immunoassay was implemented involving biotinylated detector antibodies and alkaline phosphatase (AP)-streptavidin conjugate. Differential pulse voltammetry upon addition of 1-naphthylphosphate was used as the analytical readout. A linear calibration plot between 0.5 and 600 pg mL(-1) CXCL7 and a LOD value of 0.1 pg mL(-1) were obtained. The usefulness of the immunosensor was demonstrated by the successful analysis of serum samples from patients with rheumatoid arthritis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据