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PEGylated anticancer-carbon nanotubes complex targeting mitochondria of lung cancer cells

机译:聚乙二醇化的抗癌 - 碳纳米管复合靶线肺癌细胞

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摘要

Although activating apoptosis in cancer cells by targeting the mitochondria is an effective strategy for cancer therapy, insufficient targeting of the mitochondria in cancer cells restricts the availability in clinical treatment. Here, we report on a polyethylene glycol-coated carbon nanotube (CNT)-ABT737 nanodrug that improves the mitochondrial targeting of lung cancer cells. The polyethylene glycol-coated CNT-ABT737 nanodrug internalized into the early endosomes via macropinocytosis and clathrin-mediated endocytosis in advance of early endosomal escape and delivered into the mitochondria. Cytosol release of the nanodrug led to apoptosis of lung cancer cells by abruption of the mitochondrial membrane potential, inducing Bcl-2-mediated apoptosis and generating intracellular reactive oxygen species. As such, this study provides an effective strategy for increasing the anti-lung cancer efficacy by increasing mitochondria accumulation rate of cytosol released anticancer nanodrugs.
机译:虽然通过靶向线粒体激活癌细胞中的细胞凋亡是癌症治疗的有效策略,但癌细胞中线粒体的靶向不足限制了临床治疗的可用性。 在此,我们报告了聚乙二醇涂覆的碳纳米管(CNT)-ABT737纳米树脂,其改善了肺癌细胞的线粒体靶向。 在早期内甲醛逸出之前,通过大毒细胞增生和克拉肾蛋白介导的内吞作用内化的聚乙二醇涂覆的CNT-ABT737纳米末端内化。 Cytosol释放纳米粒子通过线粒体膜电位的突然突然导致肺癌细胞的凋亡,诱导Bcl-2介导的细胞凋亡并产生细胞内反应性氧。 因此,本研究提供了通过增加细胞溶质释放抗癌纳米粒细胞的线粒体积累速率来增加抗肺癌疗效的有效策略。

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