Non-thermal plasma activates human keratinocytes by stimulation of antioxidant and phase II pathways

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Date
2015
Volume
290
Issue
11
Journal
Series Titel
Book Title
Publisher
San Francisco, Calif. : Lightbinders
Abstract

Non-thermal atmospheric pressure plasma provides a novel therapeutic opportunity to control redox-based processes, e.g. wound healing, cancer, and inflammatory diseases. By spatial and time-resolved delivery of reactive oxygen and nitrogen species, it allows stimulation or inhibition of cellular processes in biological systems. Our data show that both gene and protein expression is highly affected by non-thermal plasma. Nuclear factor erythroid-related factor 2 (NRF2) and phase II enzyme pathway components were found to act as key controllers orchestrating the cellular response in keratinocytes. Additionally, glutathione metabolism, which is a marker for NRF2-related signaling events, was affected. Among the most robustly increased genes and proteins, heme oxygenase 1, NADPH-quinone oxidoreductase 1, and growth factors were found. The roles of NRF2 targets, investigated by siRNA silencing, revealed that NRF2 acts as an important switch for sensing oxidative stress events. Moreover, the influence of non-thermal plasma on the NRF2 pathway prepares cells against exogenic noxae and increases their resilience against oxidative species. Via paracrine mechanisms, distant cells benefit from cell-cell communication. The finding that non-thermal plasma triggers hormesis-like processes in keratinocytes facilitates the understanding of plasma-tissue interaction and its clinical application.

Description
Keywords
Antioxidants, Cell Line, Cell Survival, Glutathione, Heme Oxygenase-1, Humans, Keratinocytes, NF-E2-Related Factor 2, Oxidation-Reduction, Oxidative Stress, Plasma Gases, Reactive Nitrogen Species, Reactive Oxygen Species, RNA, Small Interfering, Signal Transduction, Transcriptome
Citation
Schmidt, A., Dietrich, S., Steuer, A., Weltmann, K.-D., von Woedtke, T., Masur, K., & Wende, K. (2015). Non-thermal plasma activates human keratinocytes by stimulation of antioxidant and phase II pathways. 290(11). https://doi.org//10.1074/jbc.m114.603555
License
CC BY 4.0 Unported