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• W2939780330 endingPage "1879" @default.
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• W2939780330 abstract "A new electrochemical immunosensor for cancer cell detection based on a specific interaction between the metastasis-related antigen of epithelial cell adhesion molecule (EpCAM) on the cell membrane and its monoclonal antibody (Anti-EpCAM) immobilized on a gold electrode has been developed. The amino-terminated polyamidoamine dendrimer (G6 PAMAM) was first covalently attached to the 3-mercaptopropionic acid (MPA)-functionalized gold electrode to obtain a thin film, and then completely carboxylated by succinic anhydride (SA). Next, the Anti-EpCAM was covalently bound with the G6 PAMAM to obtain a stable recognition layer. In the presence of the EpCAM expressing hepatocellular carcinomas cell line of HepG2, the specific immune recognition (Anti-EpCAM/EpCAM) led to an obvious change of the electron transfer ability. The properties of the layer-by-layer assembly process was examined by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The final determination of HepG2 cells was performed in the presence of the reversible [Fe(CN)6]3-/4- redox couple using impedance technique. Based on the advantages of PAMAM nanomaterial and immune reaction, a linear response to HepG2 cells ranging from 1 × 104 to 1 × 106 cells mL-1 with a calculated detection limit of 2.1 × 103 cells mL-1 was obtained. We expect this method can provide a potential tool for cancer cell monitoring and protein expression analysis." @default.
• W2939780330 created "2019-04-25" @default.
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• W2939780330 date "2019-04-19" @default.
• W2939780330 modified "2023-10-14" @default.
• W2939780330 title "A Polyamidoamine Dendrimer-Based Electrochemical Immunosensor for Label-Free Determination of Epithelial Cell Adhesion Molecule- Expressing Cancer Cells" @default.
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• W2939780330 doi "https://doi.org/10.3390/s19081879" @default.
• W2939780330 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6515256" @default.
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