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
Two new neo-clerodane diterpenoids, 6,7-dibenzoyloxybarbatin C （1, named barbatin D） and 6-（2-acetoxy-3-methylbutanoloxy）-7-（2-carbonyl-3-methylbutanoyloxy） barbatin C （2, named barbatin E） were isolated from ...Two new neo-clerodane diterpenoids, 6,7-dibenzoyloxybarbatin C （1, named barbatin D） and 6-（2-acetoxy-3-methylbutanoloxy）-7-（2-carbonyl-3-methylbutanoyloxy） barbatin C （2, named barbatin E） were isolated from the whole plant of Scutellaria barbata D. Don. Their structures were elucidated by spectroscopic methods including extensive 1 D and 2D NMR analyses. In vitro, compounds 1-2 showed cytotoxic activities against three human cancer lines, namely, HONE-1 nasopharyngeal, KB oral epidermoid carcinoma, and HT29 colorectal carcinoma cells, and with IC50 values in the range of 3.5-6.7μM.展开更多
目的 ：探讨半枝莲总黄酮类提取物对乳腺癌MDA-MB-231细胞增殖、迁移、侵袭能力的影响。方法 ：体外培养乳腺癌MDA-MB-231细胞株,提取并鉴定半枝莲总黄酮提取物,配制不同浓度提取物作用于细胞,分别以MTT比色法、细胞划痕实验、transwel...目的 ：探讨半枝莲总黄酮类提取物对乳腺癌MDA-MB-231细胞增殖、迁移、侵袭能力的影响。方法 ：体外培养乳腺癌MDA-MB-231细胞株,提取并鉴定半枝莲总黄酮提取物,配制不同浓度提取物作用于细胞,分别以MTT比色法、细胞划痕实验、transwell实验检测其对MDA-MB-231细胞增殖、迁移、侵袭能力的影响,用实时定量PCR检测甲状旁腺相关蛋白（PTHr P）m RNA的表达变化。结果：与对照组相比,半枝莲总黄酮类提取物40-200μg/m L共5组作用于MDA-MB-231细胞24 h时,细胞增殖抑制率分别为（11.7±5.7）%、（25.1±4.1）%、（40.1±4.0）%、（44.7±4.0）%、（45.1±2.9）%;细胞迁移抑制率分别为（8.9±1.8）%、（20.4±2.7）%、（21.8±2.4）%、（29.3±4.0）%、（51.7±6.3）%;细胞侵袭抑制率分别为（31.4±0.3）%、（36.5±0.7）%、（57.8±0.8）%、（59.8±1.1）%、（80.7±1.4）%;PTHr P m RNA相对表达水平分别为81.8%、61.8%、46.5%、35.1%、22.2%。结论：半枝莲总黄酮类提取物可能通过下调PTHr P m RNA的表达,抑制乳腺癌MDA-MB-231细胞的增殖、迁移及侵袭能力。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.
基金the National Natural Science Foundation of China (20772104).
文摘Two new neo-clerodane diterpenoids, 6,7-dibenzoyloxybarbatin C （1, named barbatin D） and 6-（2-acetoxy-3-methylbutanoloxy）-7-（2-carbonyl-3-methylbutanoyloxy） barbatin C （2, named barbatin E） were isolated from the whole plant of Scutellaria barbata D. Don. Their structures were elucidated by spectroscopic methods including extensive 1 D and 2D NMR analyses. In vitro, compounds 1-2 showed cytotoxic activities against three human cancer lines, namely, HONE-1 nasopharyngeal, KB oral epidermoid carcinoma, and HT29 colorectal carcinoma cells, and with IC50 values in the range of 3.5-6.7μM.
文摘目的 ：探讨半枝莲总黄酮类提取物对乳腺癌MDA-MB-231细胞增殖、迁移、侵袭能力的影响。方法 ：体外培养乳腺癌MDA-MB-231细胞株,提取并鉴定半枝莲总黄酮提取物,配制不同浓度提取物作用于细胞,分别以MTT比色法、细胞划痕实验、transwell实验检测其对MDA-MB-231细胞增殖、迁移、侵袭能力的影响,用实时定量PCR检测甲状旁腺相关蛋白（PTHr P）m RNA的表达变化。结果：与对照组相比,半枝莲总黄酮类提取物40-200μg/m L共5组作用于MDA-MB-231细胞24 h时,细胞增殖抑制率分别为（11.7±5.7）%、（25.1±4.1）%、（40.1±4.0）%、（44.7±4.0）%、（45.1±2.9）%;细胞迁移抑制率分别为（8.9±1.8）%、（20.4±2.7）%、（21.8±2.4）%、（29.3±4.0）%、（51.7±6.3）%;细胞侵袭抑制率分别为（31.4±0.3）%、（36.5±0.7）%、（57.8±0.8）%、（59.8±1.1）%、（80.7±1.4）%;PTHr P m RNA相对表达水平分别为81.8%、61.8%、46.5%、35.1%、22.2%。结论：半枝莲总黄酮类提取物可能通过下调PTHr P m RNA的表达,抑制乳腺癌MDA-MB-231细胞的增殖、迁移及侵袭能力。
