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首页> 外文期刊>Tumori. >Therapeutic reactive oxygen generation.
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Therapeutic reactive oxygen generation.

机译:治疗性活性氧的产生。

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摘要

An increase of the intracellular reactive oxygen species (ROS) concentration leads to the development of oxidative stress and, thus, to the damage of cell components. The cause-and-effect relations between these processes have not been fully established yet. The ability of photo excited supramolecular composites containing fullerenes C60 immobilized at nanosilica particles to generate reactive oxygen species (ROS) in cells of two types (rat thymocytes, and transformed cells of ascite Erlich carcinoma, EAC, and leucosis L1210) is demonstrated. The damaging effect of photo excited C60-composites are shown, which appeared to be selective and manifested in transformed cells, but not in thymocytes. It has been shown that after the irradiation of aqueous solutions or cell suspensions in the presence of fullerene C60, the generation of reactive oxygen species is observed. It has been shown that the influence of photo excited fullerene C60 on metabolic processes depends on the composition of C60-containing complex and on the type of the cells. The damaging effects of photo excited fullerene C60-containing composites were demonstrated to be selective. The data presented suggest that the application of fullerene C60-containing composites for the selective activation of ROS-dependent death program in certain types of tumor cells is very promising.
机译:细胞内活性氧(ROS)浓度的增加导致氧化应激的发展,从而导致细胞成分的损害。这些过程之间的因果关系尚未完全建立。证明了固定在纳米二氧化硅颗粒上的含有富勒烯C60的光激发超分子复合物在两种类型的细胞(大鼠胸腺细胞和腹水Erlich癌,EAC和白血病L1210的转化细胞)中产生活性氧(ROS)的能力。显示了光激发的C60复合材料的破坏作用,该作用似乎是选择性的,并在转化细胞中表现出来,但在胸腺细胞中却没有。已经表明,在富勒烯C60存在下照射水溶液或细胞悬液后,观察到活性氧的产生。已经表明,光激发富勒烯C60对代谢过程的影响取决于含C60的复合物的组成和细胞的类型。含有光激发的富勒烯C60的复合材料的破坏作用被证明是选择性的。所提供的数据表明,在某些类型的肿瘤细胞中将含富勒烯C60的复合材料用于选择性激活ROS依赖性死亡程序的前景非常广阔。

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