皂荚提取物对小鼠肝癌细胞TGF-β_1信号传导通路的影响
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摘要
目的:据近年来研究发现:转化生长因子-β(TGF-β)作为一个多功能的生长因子,与肝癌等多种肿瘤的发生发展有着密切的关系。TGF-β信号通路的异常是肝癌发生发展及浸润和转移的重要因素之一.中医在治疗肝癌方面有其特色性,其中中药皂荚常作为治疗肿瘤的常用药物之一,近年来研究进展证实,中药皂荚提取物浓缩液具有抗癌的特性,可以有效抑制多种人类固体肿瘤,包括抑制肝癌细胞的生长。本实验主要探讨皂荚提取物对小鼠肝癌细胞TGF-β1信号通路系统调节的影响,为临床中药抗肿瘤治疗提供实验依据。
     方法:本研究取清洁级昆明种小鼠60只,除空白对照组小鼠10只外,其余50只小鼠均予肝癌细胞株H22移植,建立小鼠右上肢皮下移植肿瘤模型,成瘤后50只小鼠被随机分为5组进行灌胃处理,分别为:皂荚提取物组(高剂量组:18.02g/次;中剂量组:9.01g/次;低剂量组:4.505g/次)、金龙胶囊组(阳性对照组:9.01g)、生理盐水组(模型组:9.01ml)上述5组均按剂量给药,每日三次、另空白对照组10只(正常喂养,不做任何处理)。用专用小鼠灌胃针持续灌胃给药15天以后,于第16天处死所有小白鼠,并采取样本(肝脏组织,眼球取血等),进行肝癌细胞生化学(肝功能,a-L-岩藻糖苷酶(AFU))及分子生物学(TGF-β1表达)等指标检测。
     结果:根据实验数据结果进行分析:给药后,皂荚提取物高、中、低各组小鼠与金龙胶囊组小鼠TGF-β1表达阳性率明显高于模型组和空白对照组;皂荚提取物组小鼠AFU和肝功能检测指标降低,与模型组小鼠进行统计学分析比较,有统计学意义(P<0.05)。
     结论:皂荚提取物能降低肝癌小鼠AFU的水平;减轻对肝癌细胞对小鼠肝脏的损害;增强TGF-β1的表达,达到抑制小鼠肝癌细胞的增殖,并促进肝癌细胞的凋亡。
Objective: According to recent study found that: transforming growth factor-β(TGF-β) as a multifunctional growth factor, and liver cancer and othertumor development and are closely related. TGF-βsignaling pathway is abnormal liver cancer invasion and metastasis development and an important factor. Chinese medicine in the treatment of liver cancer has its own characteristics, which traditional Chinese medicine as a treatment for tumors of Gleditsia often one of the commonly used drugs, recent research confirmed that the Chinese Gleditsia extract concentrate with anti-cancer properties, can inhibit a variety of human solid tumors, including liver cancer cell growth inhibition. This study, we investigated extract on liver cancer cells Gleditsia TGF-β1 signaling system regulating effects of anti-tumor therapy in clinical medicine to provide experimental basis.
     Methods: Kunming mice of clean grade were obtained 60, in addition to 10 control mice, the remaining 50 mice were correspondingly transplanted hepatoma cell line H22, the establishment of the right upper limb subcutaneous mouse tumor model, tumor hfter the 50 mice were randomly divided into 5 groups fed treatments were: Gleditsia extract group (high dose group: 18.02g / times; middie dose group: 9.01g / times; low dose group: 4.505g / times ), Jinlong Capsule group (positive control group: 9.01g), saline group (model group: 9.01ml) above 5 groups all give three times a day, and the other 10 control group (normal feeding, not any treatment), After 15 days of continuous oral administration, in the first 16 days all mice were sacrificed, and to take samples (the liver, eyes, blood, etc.), to liver cell biochemistry [liver function, a-L-fucosidase (AFU)], and Molecular Biology (TGF-β1 expression) and so on detection.
     Results: According to the results of analysis of experimental data, after the administration, Gleditsia extract high, medium and low groups Jinlong Capsule group mice and TGF-β1 expression in mice was significantly higher than model group and control group; Gleditsia extract group AFU and liver function tests in mice decreased with the model index for statistical analysis and comparison of mice, there was significant (P<0.05).
     Conclusion: Gleditsia extract on liver cancer cells TGF-β1 signaling system to regulate, can enhance the expression of TGF-β1 to inhibit the proliferation of hepatoma ceils and promote apoptosis of hepatoma cells.
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