Objective： To investigate the effect of the ethanol extract of Scutellaria barbata D. Don（EESB） on colorectal cancer（CRC） growth and Wnt/β-catenin signaling pathway in vivo and in vitro. Methods： In vivoexperim...Objective： To investigate the effect of the ethanol extract of Scutellaria barbata D. Don（EESB） on colorectal cancer（CRC） growth and Wnt/β-catenin signaling pathway in vivo and in vitro. Methods： In vivoexperiment, CRC xenograft mouse model was constructed with injection of HT-29 cells. Following xenograft implantation, twenty mice were randomly divided into EESB-treated group（n=10） and control group（n=10） by a random number table, and were given with intra-gastric administration of 2 g/kg EESB or saline, 5 days a week for 16 days, respectively. At the end of experiment, tumors were removed and weighed by electronic scales. The proliferation biomarker Ki-67 of tumor was evaluated by immunohistochemistry（IHC） assay. In vitro study, HT-29 cells were treated with 0, 0.5, 1.5, 2.5 mg/m L EESB for 24 h. At the end of the treatment, the viability and survival of HT-29 cells were determined by methylthiazolyldiphenyl-tetrazolium bromide（MTT） assay and colony formation assay, respectively. The m RNA expression of c-Myc, Survivin and adenomatous polyposis coli（APC） was examined by reverse transcription-polymerase chain reaction（RT-PCR） both in tumor tissues of CRC xenograft mice and HT-29 cells. Protein expression of c-Myc, Survivin, APC, and β-catenin as well as β-catenin phosphorylation level were evaluated by IHC assay or Western blotting. Results： EESB significantly reduced tumor weight in CRC xenografts mice, compared with the control group（P〈0.05）. IHC assay showed that EESB significantly inhibited protein expression of Ki-67 in tumor tissues（P〈0.05）. MTT assay showed that EESB significantly reduced HT-29 cell viability in a dose-dependent manner（P〈0.05）. Colony formation assay showed that EESB dose-dependently decreased the survival of HT-29 cells（P〈0.05）. In addition, RT-PCR assay showed that EESB decreased the m RNA expression of c-Myc and Survivin and increased APC expression, both in tumor tissues of CRC xenograft mice and HT-29 cells（P〈0.05）. IHC assay or Western blotting showed that EESB decreased protein expression of β-catenin, c-Myc and Survivin, as well as increased APC expression and β-catenin phosphorylation in tumor tissues or HT-29 cells（P〈0.05）. Conclusions： EESB significantly reduced tumor growth in CRC xenografts mice, and inhibited the viability and survival of HT-29 cells. EESB could suppress the activation of the Wnt/β-catenin pathway, which might be one of the mechanisms whereby Scutellaria barbata D. Don exerts its anticancer activity.展开更多
目的基于网络药理学分析方法探讨黄芪-半枝莲抗结直肠癌的有效成分及分子机制。方法运用中药药理学分析平台数据库(TCMSP)检索黄芪与半枝莲的有效成分及作用靶点,通过GeneCards数据库等筛选结直肠癌相关靶点,运用Cytoscape(Version 3.9...目的基于网络药理学分析方法探讨黄芪-半枝莲抗结直肠癌的有效成分及分子机制。方法运用中药药理学分析平台数据库(TCMSP)检索黄芪与半枝莲的有效成分及作用靶点,通过GeneCards数据库等筛选结直肠癌相关靶点,运用Cytoscape(Version 3.9.1)软件构建药物-成分-潜在靶点网络关系图。通过String数据库平台构建蛋白相互作用(protein-protein interaction,PPI)网络图,并用Metascape数据库对潜在靶点进行功能和信号通路富集分析。结果通过数据库筛选出黄芪有效成分17种,半枝莲有效成分28种,黄芪-半枝莲与结直肠癌靶点交集共24个潜在蛋白靶点。基因本体论(gene ontology,GO)富集分析显示黄芪-半枝莲主要与DNA损伤、细胞凋亡、调节酶活性等生物学功能相关,京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析显示主要通路包括磷脂酰肌醇3-激酶/蛋白激酶B(PI3K/AKT)信号通路、丝裂原活化蛋白激酶(MAPK)信号通路、肿瘤坏死因子(TNF)信号通路等。结论通过网络药理学分析方法体现了黄芪-半枝莲抗结直肠癌的有效成分及潜在作用机制,黄芪-半枝莲可能通过多种成分、多个靶点、多种途径干预结直肠癌,为黄芪-半枝莲治疗结直肠癌提供理论依据。展开更多
基金Supported by the Natural Science Foundation of Fujian Province of China(No.2013J01333)the Youth Science Foundation of the Health Department of Fujian Province(2012-2-60)the Developmental Fund of Chen Keji Integrative Medicine(No.CKJ2015008)
文摘Objective： To investigate the effect of the ethanol extract of Scutellaria barbata D. Don（EESB） on colorectal cancer（CRC） growth and Wnt/β-catenin signaling pathway in vivo and in vitro. Methods： In vivoexperiment, CRC xenograft mouse model was constructed with injection of HT-29 cells. Following xenograft implantation, twenty mice were randomly divided into EESB-treated group（n=10） and control group（n=10） by a random number table, and were given with intra-gastric administration of 2 g/kg EESB or saline, 5 days a week for 16 days, respectively. At the end of experiment, tumors were removed and weighed by electronic scales. The proliferation biomarker Ki-67 of tumor was evaluated by immunohistochemistry（IHC） assay. In vitro study, HT-29 cells were treated with 0, 0.5, 1.5, 2.5 mg/m L EESB for 24 h. At the end of the treatment, the viability and survival of HT-29 cells were determined by methylthiazolyldiphenyl-tetrazolium bromide（MTT） assay and colony formation assay, respectively. The m RNA expression of c-Myc, Survivin and adenomatous polyposis coli（APC） was examined by reverse transcription-polymerase chain reaction（RT-PCR） both in tumor tissues of CRC xenograft mice and HT-29 cells. Protein expression of c-Myc, Survivin, APC, and β-catenin as well as β-catenin phosphorylation level were evaluated by IHC assay or Western blotting. Results： EESB significantly reduced tumor weight in CRC xenografts mice, compared with the control group（P〈0.05）. IHC assay showed that EESB significantly inhibited protein expression of Ki-67 in tumor tissues（P〈0.05）. MTT assay showed that EESB significantly reduced HT-29 cell viability in a dose-dependent manner（P〈0.05）. Colony formation assay showed that EESB dose-dependently decreased the survival of HT-29 cells（P〈0.05）. In addition, RT-PCR assay showed that EESB decreased the m RNA expression of c-Myc and Survivin and increased APC expression, both in tumor tissues of CRC xenograft mice and HT-29 cells（P〈0.05）. IHC assay or Western blotting showed that EESB decreased protein expression of β-catenin, c-Myc and Survivin, as well as increased APC expression and β-catenin phosphorylation in tumor tissues or HT-29 cells（P〈0.05）. Conclusions： EESB significantly reduced tumor growth in CRC xenografts mice, and inhibited the viability and survival of HT-29 cells. EESB could suppress the activation of the Wnt/β-catenin pathway, which might be one of the mechanisms whereby Scutellaria barbata D. Don exerts its anticancer activity.
文摘目的基于网络药理学分析方法探讨黄芪-半枝莲抗结直肠癌的有效成分及分子机制。方法运用中药药理学分析平台数据库(TCMSP)检索黄芪与半枝莲的有效成分及作用靶点,通过GeneCards数据库等筛选结直肠癌相关靶点,运用Cytoscape(Version 3.9.1)软件构建药物-成分-潜在靶点网络关系图。通过String数据库平台构建蛋白相互作用(protein-protein interaction,PPI)网络图,并用Metascape数据库对潜在靶点进行功能和信号通路富集分析。结果通过数据库筛选出黄芪有效成分17种,半枝莲有效成分28种,黄芪-半枝莲与结直肠癌靶点交集共24个潜在蛋白靶点。基因本体论(gene ontology,GO)富集分析显示黄芪-半枝莲主要与DNA损伤、细胞凋亡、调节酶活性等生物学功能相关,京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析显示主要通路包括磷脂酰肌醇3-激酶/蛋白激酶B(PI3K/AKT)信号通路、丝裂原活化蛋白激酶(MAPK)信号通路、肿瘤坏死因子(TNF)信号通路等。结论通过网络药理学分析方法体现了黄芪-半枝莲抗结直肠癌的有效成分及潜在作用机制,黄芪-半枝莲可能通过多种成分、多个靶点、多种途径干预结直肠癌,为黄芪-半枝莲治疗结直肠癌提供理论依据。
