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ISSN Druckformat: 1947-5764
ISSN Online: 1947-5772
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Characterization of Cold Atmospheric Pressure Plasma Technology and Its Anticancer Properties
ABSTRAKT
The anticancer properties of plasma were studied by treating Dulbecco's modified Eagle's medium (DMEM) with cold atmospheric pressure plasma (CAPP). The CAPP was generated by using high voltage power supply (11.75 kV) at an operating frequency of 50 Hz. The DMEM was treated with cold plasma using argon as the process gas for the different exposure time ranging from 0.5 to 3 minutes. The treated media were transferred to Henrietta Lacks (HeLa) and Human Embryonic Kidneys 293 (HEK 293) cells. The viability of cancer cells was observed using 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Cold atmospheric pressure plasma discharge has been characterized by electrical and optical methods. The cold plasma treatment selectively killed cancer cells without affecting normal cells in vitro. It has been observed that the percentage viability of the cell lines varies with the plasma treatment time along the best fitted curve of a power function. The curve is steeper for the cancer cells than for the normal cells after plasma treatment. The faster decaying curve signifies the selective killing of the cancer cells compared to the normal cells within the exposure time. This study indicates that the reactive oxygen species in the CAPP activate the apoptosis pathway in the cancer cells. As a novel strategy, using the CAPP stimulated media has become a promising anti-cancer tool.
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