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Application of a Micro-Cold Atmospheric Plasma Device (μCAP) in Vitro and Vivo for Brain Cancer Therapy

机译:微冷大气等离子体设备(μCAP)在体内和体内用于脑癌治疗的应用

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Summary form only given. Cold atmospheric plasma (CAP) has received great attention due to their remarkable abilities in plasma medicine. Many scientists have successfully elucidated the potential of CAP as a novel technology against cancer1. CAP may be generated by a range of different plasma devices such as plasma jet, dielectric barrier discharge, corona discharge, gliding arc, etc2. However, most cancers occur inside the body and plasma direct irradiation is impractical as a clinical cancer therapy due to its high voltage, the formation of discharge in the organ, gas delivery, and plasma probe volume3,4. In addition, the heat inside the organ should be controllable and normal tissue should be protected from damage. In recent years, tiny, flexible, and easy to handle CAP devices have been considered for use in medical applications. In this context, here we developed a Micro-CAP (uCAP) device employing helium gas. The main objective was to investigate the effect of uCAP on glioblastoma cancer cells (U87) and glioblastoma tumors in the murine brain. Overall, our findings indicate that the newly developed uCAP can affect tumor growth . specifically, in-vitro results show that treatment of U87 glioblastoma cells with uCAP induces apoptosis. The rate of cell viablity under direct He uCAP application was much lower than indirect treatment, indicating that the cell apoptotic impact is by a synergistic effect of short and long-lived species (such as OH, H2O2, NO2-, et al) and radicals. In-vivo results demonstrate that the uCAP suppressed glioblastoma tumor growth, highlighting the translational potential of uCAP.
机译:仅提供摘要表格。冷空气等离子体(CAP)由于其在血浆医学中的卓越能力而受到广泛关注。许多科学家已经成功地阐明了CAP作为抗癌新技术的潜力1。 CAP可由一系列不同的等离子设备产生,例如等离子流,介电势垒放电,电晕放电,滑动电弧等。然而,大多数癌症发生在体内,由于其高电压,器官中放电的形成,气体输送和血浆探针体积3,4,血浆直接辐射作为临床癌症治疗是不切实际的。此外,器官内部的热量应该是可控的,并且应该保护正常组织不受损害。近年来,人们已经考虑将纤巧,灵活且易于操作的CAP设备用于医疗应用。在此背景下,我们在此开发了一种使用氦气的Micro-CAP(uCAP)设备。主要目的是研究uCAP对小鼠脑胶质母细胞瘤癌细胞(U87)和胶质母细胞瘤的影响。总的来说,我们的发现表明,新开发的uCAP可以影响肿瘤的生长。具体而言,体外结果显示,用uCAP处理U87胶质母细胞瘤细胞可诱导凋亡。直接He uCAP施用下的细胞存活率远低于间接处理,这表明细胞凋亡的影响是由短寿命和长寿命物种(例如OH,H2O2,NO2-等)和自由基的协同作用引起的。 。体内结果表明,uCAP抑制了胶质母细胞瘤肿瘤的生长,突出了uCAP的翻译潜力。

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