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      Induction of cell growth arrest by atmospheric non-thermal plasma in colorectal cancer cells.

      Journal of Biotechnology

      Blotting, Western, Cell Line, Tumor, Cell Movement, physiology, Cell Proliferation, Colorectal Neoplasms, therapy, Flow Cytometry, Humans, In Situ Nick-End Labeling, Indoles, Phosphorylation, Plasma Gases, therapeutic use, Signal Transduction, beta Catenin, metabolism

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          Plasma is generated by ionizing neutral gas molecules, resulting in a mixture of energy particles, including electrons and ions. Recent progress in the understanding of non-thermal atmospheric plasma has led to applications in biomedicine. However, the exact molecular mechanisms involved in plasma-induced cell growth arrest are unclear. In this study, we investigated the feasibility of non-thermal atmospheric plasma treatment for cancer therapy and examined the mechanism by which plasma induces anti-proliferative properties and cell death in human colorectal cancer cells. Non-thermal atmospheric plasma induced cell growth arrest and induced apoptosis. In addition, plasma reduced cell migration and invasion activities. As a result, we found that plasma treatment to the cells increases β-catenin phosphorylation, suggesting that β-catenin degradation plays a role at least in part in plasma-induced anti-proliferative activity. Therefore, non-thermal atmospheric plasma constitutes a new biologic tool with the potential for therapeutic applications that modulate cell signaling and function. Copyright © 2010 Elsevier B.V. All rights reserved.

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