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The dark side of circulating nucleic acids.


ABSTRACT: Free circulating or cell-free DNA (cfDNA), possibly from dying cells that release their contents into the blood as they break down, have become of major interest as a source for noninvasive diagnostics. Recent work demonstrated the uptake of human cfDNA in mouse cells in vitro and in vivo, accompanied by the activation of a cellular DNA damage response (DDR) and the appearance of apoptotic proteins in the host cells. By acting as a source of mobile genetic elements, cfDNA could be a continuous source of DNA mutagenesis of healthy cells in the body throughout life, promoting progressive cellular aging in vivo. As such, cfDNA may causally contribute to multiple aging-related diseases, such as cancer, diabetes, and Alzheimer's disease.

SUBMITTER: Gravina S 

PROVIDER: S-EPMC4854914 | biostudies-other | 2016 Jun

REPOSITORIES: biostudies-other

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