Alla I Potapovich, Tatyana V Kostyuk, Tatyana V Shman, Tatyana I Ermilova, Tatyana G Shutava, Vladimir A Kostyuk
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DNA Repair Activation and Cell Death Suppression by Plant Polyphenols in Keratinocytes Exposed to Ultraviolet Irradiation.
This work investigated effects of plant polyphenolic compounds (PPs) on responses of cultured human HaCaT keratinocytes to ultraviolet radiation in the C range (UV-C). The experimental data obtained indicate a cytoprotective effect of PPs added immediately after UV-C exposure. The efficiency of PPs was lowered in the following order: acacetin ≥ silybin > quercetin. The influence of PPs on phosphorylation of histone H2AX and the number of single-strand DNA breaks in the nuclei of keratinocytes were also studied. Using the comet assay and γH2AX staining, followed by fluorescence microscopy, it has been established that PPs can reduce DNA damage in the nuclei of keratinocytes exposed to UV-C. It is concluded that PPs can diminish the destructive effect of UV radiation on skin cells, activating the process of repairing genetic damage.
期刊介绍：
Rejuvenation Research publishes cutting-edge, peer-reviewed research on rejuvenation therapies in the laboratory and the clinic. The Journal focuses on key explorations and advances that may ultimately contribute to slowing or reversing the aging process, and covers topics such as cardiovascular aging, DNA damage and repair, cloning, and cell immortalization and senescence.
Rejuvenation Research coverage includes:
Cell immortalization and senescence
Pluripotent stem cells
DNA damage/repair
Gene targeting, gene therapy, and genomics
Growth factors and nutrient supply/sensing
Immunosenescence
Comparative biology of aging
Tissue engineering
Late-life pathologies (cardiovascular, neurodegenerative and others)
Public policy and social context.
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