Document Type
Journal Article
Publication Date
5-30-2014
Journal
PLoS ONE
Volume
Volume 9, Issue 5
Inclusive Pages
Article number e98652
DOI
10.1371/journal.pone.0098652
Abstract
Previous research in cold atmospheric plasma (CAP) and cancer cell interaction has repeatedly proven that the cold plasma induced cell death. It is postulated that the reactive oxygen species (ROS) and reactive nitrogen species (RNS) play a major role in the CAP cancer therapy. In this paper, we seek to determine a mechanism of CAP therapy on glioblastoma cells (U87) through an understanding of the composition of the plasma, including treatment time, voltage, flow-rate and plasma-gas composition. In order to determine the threshold of plasma treatment on U87, normal human astrocytes (E6/E7) were used as the comparison cell line. Our data showed that the 30 sec plasma treatment caused 3-fold cell death in the U87 cells compared to the E6/E7 cells. All the other compositions of cold plasma were performed based on this result: plasma treatment time was maintained at 30 s per well while other plasma characteristics such as voltage, flow rate of source gas, and composition of source gas were changed one at a time to vary the intensity of the reactive species composition in the plasma jet, which may finally have various effect on cells reflected by cell viability. We defined a term “plasma dosage” to summarize the relationship of all the characteristics and cell viability.
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
APA Citation
Cheng, X., Sherman, J., Murphy, W., Ratovitski, E., Canady, J. et al. (2014). The effect of tuning cold plasma composition on glioblastoma cell viability. PLoS ONE, 9(5), e98652.
Peer Reviewed
1
Open Access
1
Comments
Reproduced with permission of PLoS ONE.