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Cytotoxic macrophage-released tumour necrosis factor-alpha (TNF-alpha) as a killing mechanism for cancer cell death after cold plasma activation
Journal article   Peer reviewed

Cytotoxic macrophage-released tumour necrosis factor-alpha (TNF-alpha) as a killing mechanism for cancer cell death after cold plasma activation

Nagendra Kumar Kaushik, Neha Kaushik, Booki Min, Ki Hong Choi, Young June Hong, Vandana Miller, Alexander Fridman and Eun Ha Choi
Journal of physics. D, Applied physics, v 49(8), pp 84001-84009
02 Mar 2016

Abstract

Physical Sciences Physics Physics, Applied Science & Technology
The present study aims at studying the anticancer role of cold plasma-activated immune cells. The direct anti-cancer activity of plasma-activated immune cells against human solid cancers has not been described so far. Hence, we assessed the effect of plasma-treated RAW264.7 macrophages on cancer cell growth after co-culture. In particular, flow cytometer analysis revealed that plasma did not induce any cell death in RAW264.7 macrophages. Interestingly, immunofluorescence and western blot analysis confirmed that TNF-alpha released from plasma-activated macrophages acts as a tumour cell death inducer. In support of these findings, activated macrophages down-regulated the cell growth in solid cancer cell lines and induced cell death in vitro. Together our findings suggest plasma-induced reactive species recruit cytotoxic macrophages to release TNF-alpha, which blocks cancer cell growth and can have the potential to contribute to reducing tumour growth in vivo in the near future.

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Web of Science research areas
Physics, Applied
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