mTOR抑制劑對大鼠肝癌生長抑制作用的研究
[Abstract]:Objective to investigate the inhibitory effect of m TOR inhibitor on hepatocellular carcinoma in rats and its mechanism. Methods Hepatocellular carcinoma cells were implanted into the liver of homologous rats and treated with sirolimus, a m TOR inhibitor, for 4 weeks. The tumor growth was monitored by magnetic resonance imaging (MRI). The anti-angiogenesis and anti-cancer effects of sirolimus were evaluated in vivo and in vitro by microvascular density and vascular casting, cell proliferation, microtubule formation and aortic ring analysis. Results the survival time of sirolimus group was significantly longer than that of control group, tumor size was small, liver cell metastasis and ascites were less. Sirolimus also reduces intratumoral microvessel density and causes extensive necrosis of the tumor. The concentration of sirolimus required for inhibition of endothelial cell proliferation was significantly lower than that of hepatoma cell. M TOR inhibitor significantly inhibited microtubule formation and angiogenesis of arterial rings. In tumors treated with sirolimus, angiogenesis is reduced, but suppressive angiogenesis occurs. Conclusion the m TOR inhibitor can inhibit the growth of hepatoma cells and prolong the survival time of tumor-bearing rats by anti angiogenesis. The inhibitor of m TOR has the potential to treat HCC.
【作者單位】: 南京中醫(yī)藥大學(xué)無錫附屬醫(yī)院;中南大學(xué)湘雅醫(yī)院衛(wèi)生部納米生物技術(shù)重點實驗室;
【分類號】:R735.7
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