The increasing application of engineered nanoparticles(NPs) has posed an emerging challenge to constructed wetland wastewater treatment. The performance, microbial community and toxic mechanism of anammox-based unplan...The increasing application of engineered nanoparticles(NPs) has posed an emerging challenge to constructed wetland wastewater treatment. The performance, microbial community and toxic mechanism of anammox-based unplanted subsurface-flow constructed wetlands(USFCWs) were investigated under the long-term exposure of different graphene oxides(GOs) and Ag NP concentrations. Results showed that the addition of GO could promote TN removal, manifesting as function anammox bacteria C. Anammoxoglobus having a relative high abundance, for GO did not cause significant damage to the cell integrity though there was an increase in ROS concentrations. TN removal would not be obviously affected under exposure of 1 mg/L Ag NPs, for the function gene related to cell biogenesis and repair was up-regulated; while the addition of 10 mg/L Ag NPs would have an inhibiting effect on TN removal in the USFCWs, for the disappearance of some species having anammox ability. Key enzymes of anammox process(NIR and HDH) decreased to some extent under GO and Ag NP exposure, and function gene of defense mechanisms had an increase trend in samples.展开更多
It is very important in the field of bioinformatics to apply computer to perform the function annotation for new sequenced bio-sequences. Based on GO database and BLAST program, a novel method for the function annotat...It is very important in the field of bioinformatics to apply computer to perform the function annotation for new sequenced bio-sequences. Based on GO database and BLAST program, a novel method for the function annotation of new biological sequences is presented by using the variable-precision rough set theory. The proposed method is applied to the real data in GO database to examine its effectiveness. Numerical results show that the proposed method has better precision, recall-rate and harmonic mean value compared with existing methods.展开更多
目的:基于网络药理学探讨淫羊藿治疗多囊卵巢综合征的靶点和机制。方法:中药系统药理学分析平台(TCMSP)筛选淫羊藿活性成分及靶基因,GeneCards数据库获取多囊卵巢综合征相关基因,Venny将淫羊藿靶基因与PCOS相关基因映射,Cytoscape3.2.1...目的:基于网络药理学探讨淫羊藿治疗多囊卵巢综合征的靶点和机制。方法:中药系统药理学分析平台(TCMSP)筛选淫羊藿活性成分及靶基因,GeneCards数据库获取多囊卵巢综合征相关基因,Venny将淫羊藿靶基因与PCOS相关基因映射,Cytoscape3.2.1软件构建淫羊藿-成分-靶点-疾病网络,STRING10.5软件构建PPI网络互作图和Origin9.1软件对PPI网络中的前30位蛋白绘制条形图,最后使用David v 6.8数据库将淫羊藿治疗多囊卵巢综合征的共同靶点做GO功能富集分析及KEGG通路富集分析。结果:共得到淫羊藿候选药效成分23个,涉及作用靶点106个,多囊卵巢综合征相关基因3739个,淫羊藿治疗多囊卵巢综合征的关键化合物21个,共同作用靶点67个。GO功能富集主要包含序列特异性DNA结合、转录因子结合、RNA聚合酶Ⅱ启动子转录的正调控等。KEGG富集通路主要有PI3K-AKt信号通路、TNF信号通路等72条。结论:筛选和分析淫羊藿治疗多囊卵巢综合征的作用机制,为后续进行深入研究提供了一定思路和参考。展开更多
基金financially supported by the National Key R&D Program of China(No.2017YFC0505901)the National Natural Science Foundation of China(Nos.41401548+2 种基金 41772244)the Open Project of State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology(No.HC201622)the China Scholarship Council(Nos.201804910339,201806175055)
文摘The increasing application of engineered nanoparticles(NPs) has posed an emerging challenge to constructed wetland wastewater treatment. The performance, microbial community and toxic mechanism of anammox-based unplanted subsurface-flow constructed wetlands(USFCWs) were investigated under the long-term exposure of different graphene oxides(GOs) and Ag NP concentrations. Results showed that the addition of GO could promote TN removal, manifesting as function anammox bacteria C. Anammoxoglobus having a relative high abundance, for GO did not cause significant damage to the cell integrity though there was an increase in ROS concentrations. TN removal would not be obviously affected under exposure of 1 mg/L Ag NPs, for the function gene related to cell biogenesis and repair was up-regulated; while the addition of 10 mg/L Ag NPs would have an inhibiting effect on TN removal in the USFCWs, for the disappearance of some species having anammox ability. Key enzymes of anammox process(NIR and HDH) decreased to some extent under GO and Ag NP exposure, and function gene of defense mechanisms had an increase trend in samples.
基金the support of the National Natural Science Foundation of China under Grant No.60673023,60433020,10501017,3040016the European Commission for TH/Asia Link/010 under Grant No.111084.
文摘It is very important in the field of bioinformatics to apply computer to perform the function annotation for new sequenced bio-sequences. Based on GO database and BLAST program, a novel method for the function annotation of new biological sequences is presented by using the variable-precision rough set theory. The proposed method is applied to the real data in GO database to examine its effectiveness. Numerical results show that the proposed method has better precision, recall-rate and harmonic mean value compared with existing methods.
文摘目的:基于网络药理学探讨淫羊藿治疗多囊卵巢综合征的靶点和机制。方法:中药系统药理学分析平台(TCMSP)筛选淫羊藿活性成分及靶基因,GeneCards数据库获取多囊卵巢综合征相关基因,Venny将淫羊藿靶基因与PCOS相关基因映射,Cytoscape3.2.1软件构建淫羊藿-成分-靶点-疾病网络,STRING10.5软件构建PPI网络互作图和Origin9.1软件对PPI网络中的前30位蛋白绘制条形图,最后使用David v 6.8数据库将淫羊藿治疗多囊卵巢综合征的共同靶点做GO功能富集分析及KEGG通路富集分析。结果:共得到淫羊藿候选药效成分23个,涉及作用靶点106个,多囊卵巢综合征相关基因3739个,淫羊藿治疗多囊卵巢综合征的关键化合物21个,共同作用靶点67个。GO功能富集主要包含序列特异性DNA结合、转录因子结合、RNA聚合酶Ⅱ启动子转录的正调控等。KEGG富集通路主要有PI3K-AKt信号通路、TNF信号通路等72条。结论:筛选和分析淫羊藿治疗多囊卵巢综合征的作用机制,为后续进行深入研究提供了一定思路和参考。
