目的:基于网络药理学方法挖掘蒙药额尔敦-乌日勒治疗帕金森病的主要活性成分和药物靶点,揭示其潜在的可能作用机制,并运用分子对接研究药物与靶点蛋白结合能力。方法:依据中药系统药理学分析平台(Traditional Chinese Medicine Systems ...目的:基于网络药理学方法挖掘蒙药额尔敦-乌日勒治疗帕金森病的主要活性成分和药物靶点,揭示其潜在的可能作用机制,并运用分子对接研究药物与靶点蛋白结合能力。方法:依据中药系统药理学分析平台(Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform,TCMSCP)挖掘额尔敦-乌日勒的活性成分及对应靶点,以药动参数生物利用度(oral bioavailability,OB)≥30%、类药性(drug-likeness,DL)≥0.18:为条件进行筛选,运用GeneCards、OMIM和TTD数据库筛选出额尔敦-乌日勒活性成分治疗帕金森病的可能靶点,运用Cytoscape 3.9.1绘制Venn图,借助STRING数据库绘制蛋白互作(protein-protein interaction,PPI)网络图;应用微生信在线软件及Metascape数据库查找蒙药额尔敦-乌日勒潜在的活性成分及治疗帕金森病的潜在作用靶点,并将靶点进行基因本体(gene ontology,GO)及京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)富集分析,并将药物小分子和靶点蛋白进行分子对接。结果:蒙药额尔敦-乌日勒中筛选出DL及OB值好的活性成分118种,预测治疗帕金森病的靶点207个,GO功能富集分析及KEGG富集分析显示,蒙药额尔敦-乌日勒治疗帕金森病的机制主要涉及RNA聚合酶启动子转录的正调控、正调控DNA模板转录和调控基因表达等生物过程,其涉及的通路包括AKT1、TP53、TNF、VEGFA、CASP3等。结论:蒙药额尔敦-乌日勒治疗帕金森病是多成分、多靶点、多通路的作用结果,为蒙药额尔敦-乌日勒治疗帕金森病的进一步研究提供了理论依据。展开更多
Melon （Cucumis melo L.） is an important horticultural crop worldwide. Ethylene regulates the ripening process and affects the ripening rate. To screen genes that are differentially expressed at the burst of ethylene...Melon （Cucumis melo L.） is an important horticultural crop worldwide. Ethylene regulates the ripening process and affects the ripening rate. To screen genes that are differentially expressed at the burst of ethylene climacteric in melon fruit, we performed suppression subtractive hybridization （SSH） to generate forward and reverse libraries, for which we sequenced 439 and 445 clones, respectively. Our BLAST analysis showed that the genes from the 2 libraries were involved in metabolism, signal transduction, cell structure, transcription, translation, and defense. Six genes were analyzed by qRT-PCR during the differential developmental stage of melon fruit. Our results provide new insight into the understanding of climacteric ripening of melon fruit.展开更多
文摘目的:基于网络药理学方法挖掘蒙药额尔敦-乌日勒治疗帕金森病的主要活性成分和药物靶点,揭示其潜在的可能作用机制,并运用分子对接研究药物与靶点蛋白结合能力。方法:依据中药系统药理学分析平台(Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform,TCMSCP)挖掘额尔敦-乌日勒的活性成分及对应靶点,以药动参数生物利用度(oral bioavailability,OB)≥30%、类药性(drug-likeness,DL)≥0.18:为条件进行筛选,运用GeneCards、OMIM和TTD数据库筛选出额尔敦-乌日勒活性成分治疗帕金森病的可能靶点,运用Cytoscape 3.9.1绘制Venn图,借助STRING数据库绘制蛋白互作(protein-protein interaction,PPI)网络图;应用微生信在线软件及Metascape数据库查找蒙药额尔敦-乌日勒潜在的活性成分及治疗帕金森病的潜在作用靶点,并将靶点进行基因本体(gene ontology,GO)及京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)富集分析,并将药物小分子和靶点蛋白进行分子对接。结果:蒙药额尔敦-乌日勒中筛选出DL及OB值好的活性成分118种,预测治疗帕金森病的靶点207个,GO功能富集分析及KEGG富集分析显示,蒙药额尔敦-乌日勒治疗帕金森病的机制主要涉及RNA聚合酶启动子转录的正调控、正调控DNA模板转录和调控基因表达等生物过程,其涉及的通路包括AKT1、TP53、TNF、VEGFA、CASP3等。结论:蒙药额尔敦-乌日勒治疗帕金森病是多成分、多靶点、多通路的作用结果,为蒙药额尔敦-乌日勒治疗帕金森病的进一步研究提供了理论依据。
基金supported by the National Natural Science Foundation of China(30960159)the Specialized Research Foundation for the Doctoral Program of Higher Education(200801260002)
文摘Melon （Cucumis melo L.） is an important horticultural crop worldwide. Ethylene regulates the ripening process and affects the ripening rate. To screen genes that are differentially expressed at the burst of ethylene climacteric in melon fruit, we performed suppression subtractive hybridization （SSH） to generate forward and reverse libraries, for which we sequenced 439 and 445 clones, respectively. Our BLAST analysis showed that the genes from the 2 libraries were involved in metabolism, signal transduction, cell structure, transcription, translation, and defense. Six genes were analyzed by qRT-PCR during the differential developmental stage of melon fruit. Our results provide new insight into the understanding of climacteric ripening of melon fruit.
