Journal
FRONTIERS IN ONCOLOGY
Volume 12, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fonc.2022.943253
Keywords
ctDNA= circulating tumor DNA; ctDNA kinetics; biomarker; liquid biopsy; monitoring
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Funding
- Consejeria de Ciencia, Universidades e Innovacion of the Comunidad de Madrid [IND2019/BMD17258]
- Ministerio de Ciencia e Innovacion [RTC2019007359-1]
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This article provides an overview of the biological features of circulating tumor DNA (ctDNA), including size, structure, shedding and clearance mechanisms, as well as the pathological factors that determine ctDNA levels. A better understanding of ctDNA biology is crucial for the development of new methods for ctDNA analysis.
Cancer cells release nucleic acids, freely or associated with other structures such as vesicles into body fluids, including blood. Among these nucleic acids, circulating tumor DNA (ctDNA) has emerged as a minimally invasive biomarker for tumor molecular profiling. However, certain biological characteristics of ctDNA are still unknown. Here, we provide an overview of the current knowledge about ctDNA biological features, including size and structure as well as the mechanisms of ctDNA shedding and clearance, and the physio-pathological factors that determine ctDNA levels. A better understanding of ctDNA biology is essential for the development of new methods that enable the analysis of ctDNA.
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