GC-Rich Extracellular DNA Induces Oxidative Stress, Double-Strand DNA Breaks, and DNA Damage Response in Human Adipose-Derived Mesenchymal Stem Cells

富含 GC 的细胞外 DNA 诱导人类脂肪间充质干细胞的氧化应激、双链 DNA 断裂和 DNA 损伤反应

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作者:Svetlana Kostyuk, Tatiana Smirnova, Larisa Kameneva, Lev Porokhovnik, Anatolij Speranskij, Elizaveta Ershova, Sergey Stukalov, Vera Izevskaya, Natalia Veiko

Background

Cell free DNA (cfDNA) circulates throughout the bloodstream of both healthy people and patients with various diseases. CfDNA is substantially enriched in its GC-content as compared with human genomic DNA. Principal findings: Exposure of haMSCs to GC-DNA induces short-term oxidative stress (determined with H2DCFH-DA) and

Conclusions

GC-rich fragments in the pool of cfDNA can potentially induce oxidative stress and DNA damage response and affect the direction of mesenchymal stem cells differentiation in human adipose-derived mesenchymal stem cells. Such a response may be one of the causes of obesity or osteoporosis.

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