雄黄纳米化后诱导人肺癌细胞株凋亡及抗血管生成的体外研究
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摘要
目的:研究攻毒复方“六神丸”中主要药物“雄黄”的纳米颗粒协同顺铂诱导人肺腺癌A549细胞凋亡和抗血管生成的作用机制,并探讨攻毒治法治疗肺癌的研究现状。方法:对人肺腺癌A549细胞株进行体外培养,将攻毒复方“六神丸”中的主要药物“雄黄”纳米化,以不同浓度的纳米雄黄(25ug/m1,50ug/ml,100ug/m1)与顺铂(2ug/m1)单用或联用,显微镜下观察A549细胞生长状态及形态学改变;AnnexinV/P工双染色法检测细胞凋亡;MTT法检测细胞增殖情况;免疫组化法检测Bcl-2、Caspase-3的表达;RT-PCR法检测Survivin、c-Myc的mRNA转录水平;免疫组化法检测integrinβ1和E-cd;免疫细胞化学染色法测定β-catenin;流式细胞仪检测b-FGF、MMP-9的表达。并查阅文献,总结挖掘攻毒治法治疗肺癌的历史沿革、理论以及临床研究成果。结果:不同浓度纳米雄黄可破坏人肺癌A549细胞的正常形态,诱导其凋亡;对A549细胞有明显抑制作用,与顺铂有协同作用,并可能呈时间和浓度依赖性;可抑制Bc1-2蛋白的表达,对Caspase-3有活化作用,抑制Survivin的表达;对integrin β1、E-cd、β-catenin、c-myc的表达有抑制作用;同时可以抑制b-FGF、MMP-9的表达,高浓度优于低浓度,与DDP联用效果最佳。结论:体外细胞培养实验证实纳米雄黄可能通过抑制A549细胞增殖、诱导其凋亡,通过多靶点作用发挥抗肿瘤转移、抗血管生成等疗效,为基于攻毒治法治疗肺癌提供了基础理论及实验室依据;大量的理论以及临床实践证明攻毒治法治疗肺癌疗效确切,具有较好的应用前景。
Objective:To study the toxic compound attack "Liushenwan" in the main drugs "realgar" in nanoparticles and cisplatin-induced apoptosis in cultured A549cells and anti-angiogenic mechanism,then attack drug therapies and treatment of lung cancer Research.
     Methods:Human lung adenocarcinoma A549cells were cultured in vitro, the toxic compound attack "Liushenwan" in the main drug "realgar" nano-technology, with different concentrations of nanometer realgar (25ug/ml,50ug/ml,100ug/ml) and cisplatin (2ug/ml) alone or in combination with, A549cells under the microscope and morphological changes in the state; Annexin V/PI double staining to detect cell apoptosis; MTT assay inhibition of cell proliferation; Immunohistochemistry used to detect Bcl-2, Caspase-3expression; RT-PCR assay Survivin, c-Myc in the mRNA; immune staining integrinβ1and E-cd; immunocytochemistry method β-catenin; flow cytometry detection of b-FGF, MMP-9expression. Nanometer realgar of A549human lung cancer cells inhibited cell proliferation, induce apoptosis, anti-metastasis and the possible role of anti-angiogenesis mechanism for attacking drug therapies based on the treatment of lung cancer provide the basis for theory and laboratory evidence.
     Results:Different concentrations of nanometer realgar can damage human lung cancer A549cells in the normal form; low concentrations to induce early apoptosis realgar nano-based, high concentrations of nanometer realgar Induced apoptotic based; on A549cells was significantly inhibited, and cisplatin a synergistic effect, and showed time and concentration dependent; inhibit the expression of Bcl-2protein, activation of Caspase-3has the role of inhibiting the expression of Survivin; of integrinβ1,E-cd, β-catenin and the expression of c-myc inhibit anti-metastasis effect of play; also can inhibit b-FGF, MMP-9expression, high concentrations than low concentrations, and DDP combined with the best results.
     Conclusion:The in vitro cell culture experiments confirmed that realgar nanoparticles may inhibit A549cell proliferation and induce apoptosis, and play the role of multi-target anti-metastatic and anti-angiogenic efficacy for the treatment of lung cancer based on the challenged rule method provides the basic theory andlaboratory evidence; a lot of theory and clinical practice shows that attack toxic governance and effective treatment of lung cancer, with a good application prospect.
引文
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