Construction of electrochemiluminescence sensing platform with in situ generated coreactant strategy for sensitive detection of prostate specific antigen

A sandwich-type ECL platform was fabricated for sensitive detection of prostate specific antigen (PSA) by using AuNPs decorated MoS2 (MoS2-AuNPs) as electrode material and SiO2 nanoparticles labeled with secondary antibody (Ab2) and glucose oxidase (Ab2-SiO2-GOD) as signal probes. Owing to the excel...

Full description

Saved in:
Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2020-02, Vol.858, p.113817, Article 113817
Main Authors: Hou, Fang, Hu, Xue-Bo, Ma, Shu-Hui, Cao, Jun-Tao, Liu, Yan-Ming
Format: Article
Language:English
Subjects:
Antibodies
Antigens
Biological properties
Biomarkers
Biomolecules
Electrochemiluminescence
Electrode materials
Electron transfer
Glucose oxidase
Hydrogen peroxide
Immunosensor
Immunosensors
In situ generated coreatant strategy
Molybdenum disulfide
MoS2-AuNPs
Nanoparticles
Prostate
Prostate specific antigen
Silicon dioxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A sandwich-type ECL platform was fabricated for sensitive detection of prostate specific antigen (PSA) by using AuNPs decorated MoS2 (MoS2-AuNPs) as electrode material and SiO2 nanoparticles labeled with secondary antibody (Ab2) and glucose oxidase (Ab2-SiO2-GOD) as signal probes. Owing to the excellent conductivity and large surface area of MoS2-AuNPs, the fast electron transfer process and the immobilization of numerous biomolecules can be achieved. The GOD labeled signal probes can realize the in situ generation of H2O2 as coreactant to amplify the ECL intensity of luminol. The developed immunosensor displayed a wide linear range of 0.5 pg mL−1–10.0 ng mL−1 and low detection limit of 0.20 pg mL−1 for PSA detection. The immunosensor also has been successfully applied for the analysis of PSA in human serum samples. Furthermore, the proposed strategy shows great application prospects for determination of other biomarkers in biological samples. •In situ generated coreactant strategy was used in luminol-H2O2 ECL system.•MoS2-AuNPs were used to improve the performance of the ECL immunosensor.•The ECL signal could be amplified with the in situ generated coreactant strategy.•The sensor exhibits high sensitivity and wide linear range.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2019.113817