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The implications of cell‐free DNAs derived from tumor viruses as biomarkers of associated cancers

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Cancer is still ranked as a leading cause of death according to estimates from the World Health Organization (WHO) and the strong link between tumor viruses and human cancers have… Click to show full abstract

Cancer is still ranked as a leading cause of death according to estimates from the World Health Organization (WHO) and the strong link between tumor viruses and human cancers have been proved for almost six decades. Cell‐free DNA (cfDNA) has drawn enormous attention for its dynamic, instant, and noninvasive advantages as one popular type of cancer biomarker. cfDNAs are mainly released from apoptotic cells and exosomes released from cancer cells, including those infected with viruses. Although cfDNAs are present at low concentrations in peripheral blood, they can reflect tumor load with high sensitivity. Considering the relevance of the tumor viruses to the associated cancers, cfDNAs derived from viruses may serve as good biomarkers for the early screening, diagnosis, and treatment monitoring. In this review, we summarize the methods and newly developed analytic techniques for the detection of cfDNAs from different body fluids, and discuss the implications of cfDNAs derived from different tumor viruses in the detection and treatment monitoring of virus‐associated cancers. A better understanding of cfDNAs derived from tumor viruses may help formulate novel antitumoral strategies to decrease the burden of cancers that attributed to viruses.

Keywords: derived tumor; cell free; tumor viruses; associated cancers; cfdnas derived; tumor

Journal Title: Journal of Medical Virology
Year Published: 2022

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