Three new diterpene alkaloids,tangutidines A-C(1-3),and four known alkaloids(4-7)were isolated from the whole plant of Aconitum tanguticum,from which amphoteric diterpene alkaloids(1-3)were obtained for the first time...Three new diterpene alkaloids,tangutidines A-C(1-3),and four known alkaloids(4-7)were isolated from the whole plant of Aconitum tanguticum,from which amphoteric diterpene alkaloids(1-3)were obtained for the first time.The structures of 1-3 were elucidated by detailed interpretation of spectroscopic data,including MS and NMR data.All of them were evaluated for their cytotoxic activities.展开更多
The composition and antimicrobial activities of the essential oil of Aconitum tanguticum from the southern part of Gansu Province of China were investigated. The essential oil of aerial parts was obtained by hydrodist...The composition and antimicrobial activities of the essential oil of Aconitum tanguticum from the southern part of Gansu Province of China were investigated. The essential oil of aerial parts was obtained by hydrodistillation with a 0.7% (v/w) yield. The chemical composition of the essential oil was analyzed by gas chromatography-mass spectrometry (GC-MS) method. Thirty-five compounds were characterized in the oil, which were mainly monoterpenoids (41.7%) and sequiterpenoids (12.7%). The main compounds in the oil were (-)-tran-pinecarvyl acetate (15.6%), heptane (14.88%), cineole (6.82%), 3-pinanone (3.64%), pinocamphone (3.34%), cadinol (2.93%), and cubenol (2.33%). These compounds are identified for the first time in Aconitum tanguticum. The antimicrobial activities of the oil were evaluated against 9 bacteria strains, 1 yeast strain and 3 fungi strains using agar diffusion and broth microdilution methods. It showed strong inhibition against Fusarium semitectum and methicillin-resistant Staphlococcus aureus, low activity against Escheriehia eoli, but no effect against Epidermophyton floccosum. Its MIC values ranged from 0.125 5.000 mg/mL. Thirty-five compounds are newly identified in Aconitum tanguticum.展开更多
目的基于网络药理学、分子对接技术及体外细胞实验验证,拟探讨唐古特乌头抗炎作用的潜在分子机制。方法文献调研并使用数据库检索并筛选得到唐古特乌头活性成分靶点和疾病靶点;交集得到共同靶点,构建protein protein interaction(PPI)网...目的基于网络药理学、分子对接技术及体外细胞实验验证,拟探讨唐古特乌头抗炎作用的潜在分子机制。方法文献调研并使用数据库检索并筛选得到唐古特乌头活性成分靶点和疾病靶点;交集得到共同靶点,构建protein protein interaction(PPI)网络,得出核心靶点,绘制成分-靶点-疾病网络;对共同靶点进行基因本体论(gene ontology,GO)和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)分析;将唐古特乌头二萜类生物碱活性成分和部分核心靶点进行分子对接验证。最后基于RAW264.7细胞体外炎症模型,采用MTT法、Griess试剂盒和实时荧光定量RT-PCR等方法验证唐古特乌头醇提物的药效及机制。结果文献搜集得到唐古特乌头17种活性成分,交集得到284个共同靶点;KEGG富集得到PI3K-Akt、Ras、MAPK、HIF-1等108条通路;分子对接结果显示,唐古特乌头活性成分与对接的核心靶点均具有较高的亲和力;体外细胞炎症实验表明,唐古特乌头能够抑制LPS诱导的RAW264.7细胞上清液中NO的释放,减少iNOS的表达。实时荧光定量RT-PCR显示,唐古特乌头可以通过调节PI3K-Akt信号通路发挥抗炎作用。结论唐古特乌头可通过PI3K-Akt等通路发挥抗炎作用,为更好地推进其开发应用提供了科学根据。展开更多
基金the Second Tibetan Plateau Scientific Expedition and Research(STEP)program(2019QZKK0502)the National Natural Science Foundation of China(No.81673329)Authors are grateful for Dr.Ming Zhang from northwest institute of plateau biology,Chinese Academy of Sciences,for the assistance for obtaining plant materials.
文摘Three new diterpene alkaloids,tangutidines A-C(1-3),and four known alkaloids(4-7)were isolated from the whole plant of Aconitum tanguticum,from which amphoteric diterpene alkaloids(1-3)were obtained for the first time.The structures of 1-3 were elucidated by detailed interpretation of spectroscopic data,including MS and NMR data.All of them were evaluated for their cytotoxic activities.
基金National Natural Science Foundation of China(Grant No.30471133).
文摘The composition and antimicrobial activities of the essential oil of Aconitum tanguticum from the southern part of Gansu Province of China were investigated. The essential oil of aerial parts was obtained by hydrodistillation with a 0.7% (v/w) yield. The chemical composition of the essential oil was analyzed by gas chromatography-mass spectrometry (GC-MS) method. Thirty-five compounds were characterized in the oil, which were mainly monoterpenoids (41.7%) and sequiterpenoids (12.7%). The main compounds in the oil were (-)-tran-pinecarvyl acetate (15.6%), heptane (14.88%), cineole (6.82%), 3-pinanone (3.64%), pinocamphone (3.34%), cadinol (2.93%), and cubenol (2.33%). These compounds are identified for the first time in Aconitum tanguticum. The antimicrobial activities of the oil were evaluated against 9 bacteria strains, 1 yeast strain and 3 fungi strains using agar diffusion and broth microdilution methods. It showed strong inhibition against Fusarium semitectum and methicillin-resistant Staphlococcus aureus, low activity against Escheriehia eoli, but no effect against Epidermophyton floccosum. Its MIC values ranged from 0.125 5.000 mg/mL. Thirty-five compounds are newly identified in Aconitum tanguticum.
文摘目的基于网络药理学、分子对接技术及体外细胞实验验证,拟探讨唐古特乌头抗炎作用的潜在分子机制。方法文献调研并使用数据库检索并筛选得到唐古特乌头活性成分靶点和疾病靶点;交集得到共同靶点,构建protein protein interaction(PPI)网络,得出核心靶点,绘制成分-靶点-疾病网络;对共同靶点进行基因本体论(gene ontology,GO)和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)分析;将唐古特乌头二萜类生物碱活性成分和部分核心靶点进行分子对接验证。最后基于RAW264.7细胞体外炎症模型,采用MTT法、Griess试剂盒和实时荧光定量RT-PCR等方法验证唐古特乌头醇提物的药效及机制。结果文献搜集得到唐古特乌头17种活性成分,交集得到284个共同靶点;KEGG富集得到PI3K-Akt、Ras、MAPK、HIF-1等108条通路;分子对接结果显示,唐古特乌头活性成分与对接的核心靶点均具有较高的亲和力;体外细胞炎症实验表明,唐古特乌头能够抑制LPS诱导的RAW264.7细胞上清液中NO的释放,减少iNOS的表达。实时荧光定量RT-PCR显示,唐古特乌头可以通过调节PI3K-Akt信号通路发挥抗炎作用。结论唐古特乌头可通过PI3K-Akt等通路发挥抗炎作用,为更好地推进其开发应用提供了科学根据。