To study the chemical constituents from traditional Chinese herb Ophiopogon japonicus （Thunb.） Ker-Gawl., a new steroidal glycoside, named ophiopojaponin C （1）, together with two known ones, was isolated by column...To study the chemical constituents from traditional Chinese herb Ophiopogon japonicus （Thunb.） Ker-Gawl., a new steroidal glycoside, named ophiopojaponin C （1）, together with two known ones, was isolated by column chromatography. Spectroscopic and chemical evidence revealed the structures to be ophiopogenin 3-O-[α-L-rhamnopyranosyl（1→2）]-β-D-xylopyranosyl（1→4）-β-D-glucopyranoside （1）, diosgenin 3-O-[2-O-acetyl-α-L-rhamnopyranosyl（1→2）]-β-D-xylopyranosyl（1→3）-β-D-glucopyranoside （2）, and ruscogenin 1-O-[2-O-acetyl-α-L-rhamnopyranosyl（1→2）]-β-D-xylopyranosyl（1→3）-β-D-fucopyranoside （3）.展开更多
AIM： To investigate the anticancer activity of DT-13 under normoxia and determine the underlying mechanisms of action. METHODS： MDA-MB-435 cell proliferation, migration, and adhesion were performed to assess the ant...AIM： To investigate the anticancer activity of DT-13 under normoxia and determine the underlying mechanisms of action. METHODS： MDA-MB-435 cell proliferation, migration, and adhesion were performed to assess the anticancer activity of DT-13, a saponin from Ophiopogonjaponicus, in vitro. In addition, the effects of DT-13 on tumor growth and metastasis in vivo were evaluated by orthotopic implantation of MDA-MB-435 cells into nude mice; mRNA levels of vascular endothelial growth factor （VEGF）, C-C chemokine receptor type 5 （CCR5） and hypoxia-inducible factor 1a （HIF-1a） were evaluated by real-time quantitative PCR; and CCR5 protein levels were detected by Western blot assay. RESULTS： At 0.01 to 1 umol·L -1, DT-13 inhibited MDA-MB-435 cell proliferation, migration, and adhesion significantly in vitro. DT-13 reduced VEGF and CCR5 mRNAs, and decreased CCR5 protein expression by down-regulating HIF-1 a. In addition, DT-13 inhibited MDA-MB-435 cell lung metastasis, and restricted tumor growth slightly in vivo. CONCLUSION： DT-13 inhibited MDA-MB-435 cell proliferation, adhesion, and migration in vitro, and lung metastasis in vivo by reducing VEGF, CCR5, and HIF-la expression.展开更多
A new, simple and reliable method using HPLC-UV-ELSD was developed to generate the fingerprint of Ophiopogonis Radix. Homoisoflavonoids and steroidal saponins were determined simultaneously in a single run. A total of...A new, simple and reliable method using HPLC-UV-ELSD was developed to generate the fingerprint of Ophiopogonis Radix. Homoisoflavonoids and steroidal saponins were determined simultaneously in a single run. A total of 27 Ophiopogonis Radix samples were analyzed, and 18 reference substances were used for the identification of the common peaks. The fingerprint was further analyzed by chemometrics methods including similarity analysis （SA）, hierarchical clustering analysis （HCA） and principal component analysis （PCA）. The results indicated that the combination of chromatographic fingerprint and chemometrics analysis could be used for the geographical differentiation and quality evaluation of Ophiopognnis Radix.展开更多
目的考查不同材质及不同孔径的超滤膜对5种麦冬皂苷类成分的影响。方法以麦冬皂苷C、麦冬皂苷D、麦冬皂苷D'、麦冬皂苷Ra、龙血苷F为考察指标,利用HPLC-UV法测定其超滤前后变化,考察不同材质及孔径的超滤膜对5种麦冬皂苷收率的影响...目的考查不同材质及不同孔径的超滤膜对5种麦冬皂苷类成分的影响。方法以麦冬皂苷C、麦冬皂苷D、麦冬皂苷D'、麦冬皂苷Ra、龙血苷F为考察指标,利用HPLC-UV法测定其超滤前后变化,考察不同材质及孔径的超滤膜对5种麦冬皂苷收率的影响以及各超滤阶段对麦冬皂苷类成分截留率的变化情况。结果不同材质及不同孔径的超滤膜处理下,麦冬皂苷类成分的收率不同;聚醚砜材质超滤膜对各超滤阶段的麦冬皂苷类成分截留率变化趋势与纤维素材质是一致的。结论采用100 k Da的聚醚砜超滤膜,可以使麦冬皂苷类成分的收率达到最高,用50%乙醇进行等体积透析,会对麦冬皂苷的收率有较大的改善。展开更多
文摘To study the chemical constituents from traditional Chinese herb Ophiopogon japonicus （Thunb.） Ker-Gawl., a new steroidal glycoside, named ophiopojaponin C （1）, together with two known ones, was isolated by column chromatography. Spectroscopic and chemical evidence revealed the structures to be ophiopogenin 3-O-[α-L-rhamnopyranosyl（1→2）]-β-D-xylopyranosyl（1→4）-β-D-glucopyranoside （1）, diosgenin 3-O-[2-O-acetyl-α-L-rhamnopyranosyl（1→2）]-β-D-xylopyranosyl（1→3）-β-D-glucopyranoside （2）, and ruscogenin 1-O-[2-O-acetyl-α-L-rhamnopyranosyl（1→2）]-β-D-xylopyranosyl（1→3）-β-D-fucopyranoside （3）.
基金supported by the National Natural Science Foundation(Nos.81102853,81071841)the 2011’Program for Excellent Scientific and Technological Innovation Team of Jiangsu Higher Education
文摘AIM： To investigate the anticancer activity of DT-13 under normoxia and determine the underlying mechanisms of action. METHODS： MDA-MB-435 cell proliferation, migration, and adhesion were performed to assess the anticancer activity of DT-13, a saponin from Ophiopogonjaponicus, in vitro. In addition, the effects of DT-13 on tumor growth and metastasis in vivo were evaluated by orthotopic implantation of MDA-MB-435 cells into nude mice; mRNA levels of vascular endothelial growth factor （VEGF）, C-C chemokine receptor type 5 （CCR5） and hypoxia-inducible factor 1a （HIF-1a） were evaluated by real-time quantitative PCR; and CCR5 protein levels were detected by Western blot assay. RESULTS： At 0.01 to 1 umol·L -1, DT-13 inhibited MDA-MB-435 cell proliferation, migration, and adhesion significantly in vitro. DT-13 reduced VEGF and CCR5 mRNAs, and decreased CCR5 protein expression by down-regulating HIF-1 a. In addition, DT-13 inhibited MDA-MB-435 cell lung metastasis, and restricted tumor growth slightly in vivo. CONCLUSION： DT-13 inhibited MDA-MB-435 cell proliferation, adhesion, and migration in vitro, and lung metastasis in vivo by reducing VEGF, CCR5, and HIF-la expression.
基金National Key Technology R&D Program"New Drug Innovation" of China (Grant No. 2012ZX09304-005,2012ZX09301002-002-002)
文摘A new, simple and reliable method using HPLC-UV-ELSD was developed to generate the fingerprint of Ophiopogonis Radix. Homoisoflavonoids and steroidal saponins were determined simultaneously in a single run. A total of 27 Ophiopogonis Radix samples were analyzed, and 18 reference substances were used for the identification of the common peaks. The fingerprint was further analyzed by chemometrics methods including similarity analysis （SA）, hierarchical clustering analysis （HCA） and principal component analysis （PCA）. The results indicated that the combination of chromatographic fingerprint and chemometrics analysis could be used for the geographical differentiation and quality evaluation of Ophiopognnis Radix.
文摘目的考查不同材质及不同孔径的超滤膜对5种麦冬皂苷类成分的影响。方法以麦冬皂苷C、麦冬皂苷D、麦冬皂苷D'、麦冬皂苷Ra、龙血苷F为考察指标,利用HPLC-UV法测定其超滤前后变化,考察不同材质及孔径的超滤膜对5种麦冬皂苷收率的影响以及各超滤阶段对麦冬皂苷类成分截留率的变化情况。结果不同材质及不同孔径的超滤膜处理下,麦冬皂苷类成分的收率不同;聚醚砜材质超滤膜对各超滤阶段的麦冬皂苷类成分截留率变化趋势与纤维素材质是一致的。结论采用100 k Da的聚醚砜超滤膜,可以使麦冬皂苷类成分的收率达到最高,用50%乙醇进行等体积透析,会对麦冬皂苷的收率有较大的改善。
