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Determination of Immediate vs. Kinetic Growth Retardation in Physically Plasma-treated Cells by Experimental and
Lyubomir Haralambiev1,2, Arnab Bandyophadyay3, Bettina Suchy1
1Department of Trauma, Reconstructive Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Germany.
Background/Aim:
The antiproliferative effects of cold atmospheric plasma (CAP) make it a promising application option in oncology. The aim of the present study was to examine whether short-term CAP treatment leads to an initial partial elimination of the treated cells or to long-term impairement and inhibition of cell growth.
Materials And Methods:
Cells were treated with CAP and biostatistical modelling was used to estimate growth rates over the incubation time. Four cell lines (U2-OS and MNNG osteosarcoma cells, 3T3 fibroblasts, HaCaT keratinocytes) and three CAP sources (MiniJet-R, kINPen MED, Maxium) were used.
Results:
The antiproliferative efficacy of CAP was due to a significant reduction in cell count during treatment and the long-lasting inhibition of growth rate in the remaining cells, detectable in all cell lines and after treatment using all three CAP devices.
Conclusion:
Induction of cell death and inhibition of cell growth are part of a general mechanism of biological CAP efficacy. However, data contradict the hypothesis that cancer cells respond more sensitively to CAP treatment compared to non-malignant cells.
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