Targeting the cancer cell cycle by cold atmospheric plasma.

Targeting the cancer cell cycle by cold atmospheric plasma.
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DOI:
10.1038/srep00636
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发表时间:
2012
期刊:
影响因子:
4.6
通讯作者:
Keidar, M.
Keidar, M.
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Volotskova, O.;Hawley, T. S.;Stepp, M. A.;Keidar, M.

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冷大气等离子体(CAP)是一种基于低温准中性电离气体的技术,目前正在评估作为现有癌症疗法的一种新的高选择性替代方案。在这里,我们首次尝试确定 CAP 作用机制。 CAP 在具有不同致瘤性的两种不同类型的癌细胞中诱导 G2/M 显着增加约 2 倍。我们假设癌细胞对 CAP 治疗的敏感性增加是由癌细胞和正常细胞在细胞周期内的分布差异引起的。 γH2A.X (pSer139)(一种指示 S 期损伤的氧化应激报告基因)的表达在细胞周期 S 期的 CAP 处理细胞内特异性增强。加上 CAP 后 EdU 掺入显着减少,这些数据表明致瘤癌细胞更容易受到 CAP 治疗的影响。
Cold atmospheric plasma (CAP), a technology based on quasi-neutral ionized gas at low temperatures, is currently being evaluated as a new highly selective alternative addition to existing cancer therapies. Here, we present a first attempt to identify the mechanism of CAP action. CAP induced a robust ~2-fold G2/M increase in two different types of cancer cells with different degrees of tumorigenicity. We hypothesize that the increased sensitivity of cancer cells to CAP treatment is caused by differences in the distribution of cancer cells and normal cells within the cell cycle. The expression of γH2A.X (pSer139), an oxidative stress reporter indicating S-phase damage, is enhanced specifically within CAP treated cells in the S phase of the cell cycle. Together with a significant decrease in EdU-incorporation after CAP, these data suggest that tumorigenic cancer cells are more susceptible to CAP treatment.
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