期刊
BIOSENSORS 2016
卷 27, 期 -, 页码 81-84出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.protcy.2017.04.035
关键词
Transforming Growth Factor-beta 1; TGF-beta 1; electrochemical immunosensor; signal amplification; urine
The first amperometric immunosensor for the quantification of TGF-beta 1 is described in this work. The immunosensor design involves disposable devices using carboxylic acid-functionalized magnetic microparticles supported onto screen-printed carbon electrodes and covalent immobilization of the specific antibody for TGF-beta 1 using Mix & polymer. A sandwich-type immunoassay was performed using peroxidase-labeled streptavidin (Poly-HRP-Strept) polymer for signal amplification. The calibration plot allowed a range of linearity extending between 15 and 3000 pg/mL TGF-beta 1 (LOD 10 pg/mL). The usefulness of the immunosensor was evaluated by analyzing spiked urine at different pg/mL concentration levels. (C) 2016 The Authors. Published by Elsevier Ltd.
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