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Enhanced cytotoxicity and suppression of glucose transport rate by combined treatment of recombinant human tumour necrosis factor-alpha and hyperthermia on L929 cells.

机译:通过联合治疗重组人肿瘤坏死因子-α和热疗对L929细胞的增强的细胞毒性和葡萄糖转运速率的抑制。

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摘要

Combined treatment with human recombinant TNF-alpha (rhTNF-alpha) and hyperthermia at 43 degrees C arrested the growth of mouse fibrosarcoma L929 cells in vitro. The cytotoxic effect was enhanced in combined treatment compared with that following administration of rhTNF-alpha or hyperthermia alone. When the cells were subjected to hyperthermia at 43 degrees C for 3 hours and then incubated with 0.4 ng/ml rhTNF-alpha at 37 degrees C for 24 hours, a statistically significant 65% decrease in the rate of cellular glucose uptake was observed. This suppressive effect was synergistic in terms of effect achieved by rhTNF-alpha or hyperthermia individually. Since the growth of tumour cells depends mainly on catabolism of glucose, our findings indicate that one manner by which combined rhTNF-alpha and hyperthermia treatment inhibits L929 cell growth may be by reducing the supply of glucose to the cells.
机译:与人重组TNF-α(rhTNF-alpha)和高温在43°C的联合治疗在体外抑制了小鼠纤维肉瘤L929细胞的生长。与单独施用rhTNF-α或热疗后相比,联合治疗的细胞毒性作用增强。当将细胞在43摄氏度下进行高温3小时,然后与0.4 ng / mlrhTNF-α在37摄氏度下孵育24小时时,观察到统计学上显着的细胞葡萄糖摄取率降低了65%。就单独通过rhTNF-α或高热所达到的效果而言,这种抑制作用是协同的。由于肿瘤细胞的生长主要取决于葡萄糖的分解代谢,因此我们的发现表明,rhTNF-α和高温疗法联合抑制L929细胞生长的一种方式可能是减少细胞中葡萄糖的供应。

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