期刊
ANALYTICA CHIMICA ACTA
卷 1082, 期 -, 页码 1-17出版社
ELSEVIER
DOI: 10.1016/j.aca.2019.07.054
关键词
Aptamer; Electrochemical cytosensor; Electrochemiluminescence cytosensor; Photoelectrochemical cytosensor; Cancer cell
资金
- National Natural Science Foundation of China [21675177, 81803521]
- Natural Science Foundation of Guangdong Province [2018A030310142]
- Fundamental Research Funds for the Central Universities [18zxxt69]
- Guangzhou Key Laboratory of Construction and Application of New Drug Screening Model Systems [201805010006]
- Key Laboratory of New Drug Discovery and Evaluation of Ordinary Universities of Guangdong Province [2017KSYS002]
- Guangdong Pharmaceutical University [51377003]
Circulating tumor cells, a type of viable cancer cell circulating from primary or metastatic tumors in the blood stream, can lead to the parallel development of primary tumors and metastatic lesions. Highly selective and sensitive detection of tumor cells has become a hot research topic and can provide a basis for early diagnosis of cancers and anticancer drug evaluation to develop the best treatment plan. Aptamers are single-stranded oligonucleotides that can bind to target tumor cells in unique three-dimensional structures with high specificity and affinity. Aptamer-based methods or signal amplification methods using aptamers show great potential in improving the selectivity and sensitivity of electrochemical (EC) cytosensors for tumor cell detection. This review covers the remarkable developments in aptamer-based EC cytosensors for the identification of cell type, cell counting and detection of crucial proteins on the cell surface. Various EC techniques have been developed for cancer cell detection, including common voltammetry or impedance, electrochemiluminescence and photoelectrochemistry in a direct approach (aptamer-target cell), sandwich approach (capture probe-target cell-signaling probe) or other approach. The current challenges and promising opportunities in the establishment of EC aptamer cytosensors for tumor cell detection are also discussed. (C) 2019 Elsevier B.V. All rights reserved.
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