Citation:
CHEN Huan, HAN Xin-Tao, WEI Jia, LIU Jia-Nan, WANG Guo-Qing, LIU Wan-Jian, TIAN Yong-Shuai, MENG Xian-Ying, WANG Zhen-Xin. Recent Progress of Detection of Circulating Tumor DNA[J]. Chinese Journal of Analytical Chemistry,
;2021, 49(6): 893-906.
doi:
10.19756/j.issn.0253-3820.211106
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Circulating tumor DNA (ctDNA) is a kind of cell-free DNA (cfDNA) derived from tumor, which may carry the same carcinogenic mutations and genetic alterations as those of a primary tumor. Because ctDNA is expected to be a molecular biomarker for non-invasive monitoring of cancer, the development of ctDNA analysis methods can efficiently promote the development of liquid biopsy technology for cancer diagnosis, prognosis evaluation, efficacy monitoring and genetic/epigenetic abnormalities. In the past decades, traditional DNA detection techniques such as polymerase chain reaction (PCR) and next generation sequencing (NGS) were applied to clinical detection of ctDNA. Recently, biosensors have been gradually employed to analyze ctDNA in blood samples in cancer patients, which bring new tools for detection of ctDNA. In this review, the ctDNA analysis methods, especially the new progress of ctDNA biosensors in recent five years, have been summarized. The currently technical challenges of these methods in clinical practice have also been briefly discussed, which may provide useful information for developing new liquid biopsy methods of cancer.
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Keywords:
- Circulating tumor DNA,
- Molecular biomarkers,
- Liquid biopsy,
- Biosensor,
- Review
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