The main purpose of this study was to investigate the active components of the Chinese medicine formula Shenqi San（SS） by high performance liquid chromatography with diode array detector and electrospray ionization-...The main purpose of this study was to investigate the active components of the Chinese medicine formula Shenqi San（SS） by high performance liquid chromatography with diode array detector and electrospray ionization-hybrid quadrupole time-of-flight mass spectrum（HPLC-DADESI-QTOF-MS）, and demonstrate the anticancer mechanism of SS on human lung adenocarcinoma A549 cells by evaluating the cell proliferation and apoptosis induction. The chloroform extraction of SS（CE-SS） was extracted from SS, while HPLC-DAD-ESI-QTOF-MS assay was performed to identify components of CE-SS. MTT assay was used to quantify the proliferation of A549 cells with the treatment of CE-SS. Apoptosis analysis was carried out by detecting phosphatidylserine（PS） externalization using the Annexin V-FITC Apoptosis Detection Kit and the stained cells were analyzed with a flow cytometer. DAPI staining assay was carried out to observe morphological characteristics of apoptotic cells. Western blotting was used to detect the expression of important signaling proteins including caspase-3,-8,-9, p53, Bax and Bcl-2. Eight compounds were identified through HPLC-DAD-ESI-QTOF-MS analysis and 3-pyridine carboxylic acid, barbatin C, scutebarbatine F and barbatine D might be the main compounds responsible for the antitumor effect of CE-SS. CE-SS suppressed the proliferation of lung cancer A549 cells in a time-and dose-dependent manner. By Annexin V-FITC/PI double staining, we found that treatment with CE-SS induced apoptosis in A549 cells. After 24-h exposure to CE-SS, the expression of cleaved-caspase-9, cleaved-caspase-8 and cleaved-caspase-3 protein was activated, the expression of p53 protein increased while the ratio of Bax/Bcl-2 also increased. This study identified the eight compounds of CE-SS, and demonstrated their anticancer effect on human lung adenocarcinoma A549 cells via induction of apoptosis.展开更多
目的:通过网络药理学方法,预测中药大黄抗肾脏纤维化的活性成分、潜在靶点及通路,选取活性成分,对筛选出的靶基因进行体外实验验证。方法:检索中药系统药理学数据库与分析平台(TCMSP)与中药分子机制分析综合数据库(TCMID)获取并筛选大...目的:通过网络药理学方法,预测中药大黄抗肾脏纤维化的活性成分、潜在靶点及通路,选取活性成分,对筛选出的靶基因进行体外实验验证。方法:检索中药系统药理学数据库与分析平台(TCMSP)与中药分子机制分析综合数据库(TCMID)获取并筛选大黄主要活性成分,利用相似度系综算法数据库(SEA),瑞士生物信息学研究所(SIB),Gene Cards数据库预测和筛选大黄抗肾脏纤维化的潜在作用靶点。采用String Version 10.5数据库构建靶点蛋白相互作用(PPI)网络;运用David 6.8软件对关键靶点进行基因本体论(GO)富集分析、京都基因与基因组百科全书(KEGG)通路分析。采用Cytoscape Version 3.6.0软件对关键蛋白相互作用网络、活性成分-关键靶点网络、活性成分-靶点-信号通路网络进行可视化分析。结合Malarcards数据库筛选出与肾脏纤维化高关联性信号通路。进一步采用细胞实验验证:选取HK-2细胞,利用转化生长因子-β1(TGF-β1)诱导细胞纤维化模型,予大黄酸干预细胞48 h,蛋白免疫印迹法(Western blot)检测缺氧诱导因子1α(HIF-1α),血管内皮生长因子(VEGF),血小板衍生生长因子受体-α(PDGFR-α),免疫荧光检测E-钙黏蛋白(E-cadherin),α-平滑肌肌动蛋白(α-SMA)蛋白表达,流式细胞术检测细胞凋亡。结果:筛选得到大黄活性成分17个,大黄抗肾脏纤维化潜在靶点424个,关键靶点5个,依次为蛋白激酶B(Akt)1,丝裂原激活的蛋白激酶(MAPK)3,EGFR,白细胞介素-6(IL-6),VEGFA;GO富集生物学过程主要涉及信号转导、细胞增殖、凋亡等生物过程;KEGG通路富集结果发现磷脂酰肌醇3-激酶(PI3K)/Akt,HIF-1α,VEGF,叉头转录因子(FoxO)等通路与大黄抗肾脏纤维化作用机制相关。体外实验验证表明,大黄酸抑制E-cadherin,α-SMA,HIF-1α,VEGF,PDGFR-α的表达水平,同时抑制肾小管上皮细胞凋亡,验证了网络药理学部分预测结果。结论:本研究体现了大黄多成分、多靶点、多途径的作用特点,其抗肾脏纤维化的作用机制可能与其抑制HIF-1α/VEGF/PDGFR-α信号转导途径,抑制细胞凋亡及肾小管上皮细胞上皮间质转化(EMT)有关。展开更多
基金supported by grants from Doctoral Scientific Research Foundation of Hubei University of Chinese Medicine(No.5114-000912)Hubei University of Chinese Medicine Foundation For Young Scholar(No.5112-0007)
文摘The main purpose of this study was to investigate the active components of the Chinese medicine formula Shenqi San（SS） by high performance liquid chromatography with diode array detector and electrospray ionization-hybrid quadrupole time-of-flight mass spectrum（HPLC-DADESI-QTOF-MS）, and demonstrate the anticancer mechanism of SS on human lung adenocarcinoma A549 cells by evaluating the cell proliferation and apoptosis induction. The chloroform extraction of SS（CE-SS） was extracted from SS, while HPLC-DAD-ESI-QTOF-MS assay was performed to identify components of CE-SS. MTT assay was used to quantify the proliferation of A549 cells with the treatment of CE-SS. Apoptosis analysis was carried out by detecting phosphatidylserine（PS） externalization using the Annexin V-FITC Apoptosis Detection Kit and the stained cells were analyzed with a flow cytometer. DAPI staining assay was carried out to observe morphological characteristics of apoptotic cells. Western blotting was used to detect the expression of important signaling proteins including caspase-3,-8,-9, p53, Bax and Bcl-2. Eight compounds were identified through HPLC-DAD-ESI-QTOF-MS analysis and 3-pyridine carboxylic acid, barbatin C, scutebarbatine F and barbatine D might be the main compounds responsible for the antitumor effect of CE-SS. CE-SS suppressed the proliferation of lung cancer A549 cells in a time-and dose-dependent manner. By Annexin V-FITC/PI double staining, we found that treatment with CE-SS induced apoptosis in A549 cells. After 24-h exposure to CE-SS, the expression of cleaved-caspase-9, cleaved-caspase-8 and cleaved-caspase-3 protein was activated, the expression of p53 protein increased while the ratio of Bax/Bcl-2 also increased. This study identified the eight compounds of CE-SS, and demonstrated their anticancer effect on human lung adenocarcinoma A549 cells via induction of apoptosis.
文摘目的:通过网络药理学方法,预测中药大黄抗肾脏纤维化的活性成分、潜在靶点及通路,选取活性成分,对筛选出的靶基因进行体外实验验证。方法:检索中药系统药理学数据库与分析平台(TCMSP)与中药分子机制分析综合数据库(TCMID)获取并筛选大黄主要活性成分,利用相似度系综算法数据库(SEA),瑞士生物信息学研究所(SIB),Gene Cards数据库预测和筛选大黄抗肾脏纤维化的潜在作用靶点。采用String Version 10.5数据库构建靶点蛋白相互作用(PPI)网络;运用David 6.8软件对关键靶点进行基因本体论(GO)富集分析、京都基因与基因组百科全书(KEGG)通路分析。采用Cytoscape Version 3.6.0软件对关键蛋白相互作用网络、活性成分-关键靶点网络、活性成分-靶点-信号通路网络进行可视化分析。结合Malarcards数据库筛选出与肾脏纤维化高关联性信号通路。进一步采用细胞实验验证:选取HK-2细胞,利用转化生长因子-β1(TGF-β1)诱导细胞纤维化模型,予大黄酸干预细胞48 h,蛋白免疫印迹法(Western blot)检测缺氧诱导因子1α(HIF-1α),血管内皮生长因子(VEGF),血小板衍生生长因子受体-α(PDGFR-α),免疫荧光检测E-钙黏蛋白(E-cadherin),α-平滑肌肌动蛋白(α-SMA)蛋白表达,流式细胞术检测细胞凋亡。结果:筛选得到大黄活性成分17个,大黄抗肾脏纤维化潜在靶点424个,关键靶点5个,依次为蛋白激酶B(Akt)1,丝裂原激活的蛋白激酶(MAPK)3,EGFR,白细胞介素-6(IL-6),VEGFA;GO富集生物学过程主要涉及信号转导、细胞增殖、凋亡等生物过程;KEGG通路富集结果发现磷脂酰肌醇3-激酶(PI3K)/Akt,HIF-1α,VEGF,叉头转录因子(FoxO)等通路与大黄抗肾脏纤维化作用机制相关。体外实验验证表明,大黄酸抑制E-cadherin,α-SMA,HIF-1α,VEGF,PDGFR-α的表达水平,同时抑制肾小管上皮细胞凋亡,验证了网络药理学部分预测结果。结论:本研究体现了大黄多成分、多靶点、多途径的作用特点,其抗肾脏纤维化的作用机制可能与其抑制HIF-1α/VEGF/PDGFR-α信号转导途径,抑制细胞凋亡及肾小管上皮细胞上皮间质转化(EMT)有关。
