[Objective] This study aimed to investigate the biological characteristics of a Bacillus thuringiensis strain YNI-1, which has high virulence to Lepidoptera spp. [Method] The crystal protein of YNI-1 was analyzed by S...[Objective] This study aimed to investigate the biological characteristics of a Bacillus thuringiensis strain YNI-1, which has high virulence to Lepidoptera spp. [Method] The crystal protein of YNI-1 was analyzed by SDS-PAGE, and its indoor and field efficacy for Lepidoptera spp. was investigated. [Result] The parasporal crystal of YNI-1 has a diamond-like structure. The molecular weight of the original toxin protein is 136 kDa. After trypsin treatment, the original toxin protein was hy- drolyzed into active toxin protein with molecular weight of 63 kDa. For Plutella xy- Iostella and Pieris rapae, the indoor efficacy of B. thuringiensis was better than that of commercial B. thuringiensis （WP）. In view of field efficacy, rate of YNI-1 strain was higher than that of commercial B [Conelusion] YNI-1 strain has excellent development potential. the insects reduced thuringiensis （WP）.展开更多
采用网络药理学的方法探究虎杖(Polygonum cuspidatum)治疗糖尿病心肌病(diabetic cardiomyopathy, DCM)的关键靶点和潜在作用机制.通过检索中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology databas...采用网络药理学的方法探究虎杖(Polygonum cuspidatum)治疗糖尿病心肌病(diabetic cardiomyopathy, DCM)的关键靶点和潜在作用机制.通过检索中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology database and analysis platform, TCMSP)和查阅文献,获得虎杖的主要活性成分并预测其潜在的作用靶点.利用GeneCards和在线人类孟德尔遗传(online Mendelian inheritance in man, OMIM)数据库获得DCM的作用靶点,并绘制Venn图获得二者的交集靶点.使用String数据库和CytoScape软件构建虎杖-有效成分-交集靶点网络和蛋白相互作用(protein-protein interaction, PPI)网络.通过注释、可视化和集成发现数据库(the database for annotation, visualization and integrated discovery, DAVID)在线分析工具进行基因本体论(gene ontology, GO)富集分析和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes, KEGG)富集分析,共筛选出15个虎杖有效活性成分以及214个治疗DCM的潜在作用靶点,主要涉及脂质和动脉粥样硬化通路、糖尿病并发症中的AGE-RAGE信号通路、IL-17信号通路、HIF-1信号通路、胰岛素抵抗通路、PI3K-Akt信号通路及凋亡通路等.这说明虎杖通过多成分、多靶点、多通路来发挥治疗DCM的作用.展开更多
背景中药复方具有多成分综合调节的特点,在肝纤维化防治中显示出独特的优势.一贯煎始载于魏之琇所著《续名医类案》,是滋阴疏肝的著名方剂,能够改善肝纤维化症状,研究其抗肝纤维化机制有助于药物开发和推广.目的通过网络药理学探究一贯...背景中药复方具有多成分综合调节的特点,在肝纤维化防治中显示出独特的优势.一贯煎始载于魏之琇所著《续名医类案》,是滋阴疏肝的著名方剂,能够改善肝纤维化症状,研究其抗肝纤维化机制有助于药物开发和推广.目的通过网络药理学探究一贯煎治疗肝纤维化的机制并实验验证.方法利用文献和TCMSP数据库收集一贯煎成分及靶点,GeneCard、OMIM数据库收集肝纤维化疾病靶点.通过STRING数据库构建一贯煎-肝纤维化蛋白互作网络(protein-protein interaction,PPI)子网络,应用重启随机游走算法获得关键基因,通过DAVID数据库进行基因本体(gene ontology,GO)富集分析及京都基因和基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析.动物实验验证,18只SD大鼠随机分为正常组、模型组、一贯煎组.模型组、一贯煎组大鼠采用腹腔注射50%四氯化碳(carbon tetrachloride,CCl_(4))橄榄油溶液造模6周,正常组注射等量橄榄油.造模结束后一贯煎组每天灌胃一贯煎溶液(6.67 g/kg)共4 wk,其他组灌胃等量蒸馏水,取血和肝脏.全自动生化仪检测血清丙氨酸转氨酶(alanine aminotransferase,ALT)和天冬氨酸转氨酶(aspartate aminotransferase,AST).HE、Masoon染色观察肝脏病理学变化.Western blot法和qRT-PCR法检测肝脏关键蛋白表达水平和mRNA转录水平.结果筛选得到一贯煎成分52个,潜在作用靶点186个,肝纤维化疾病靶点1080个,得到一贯煎治疗肝纤维化的关键基因,其中亲和度前10的基因为STAT6、SRC、MAPK3、STX1A、EP300、STAT3、PLG、CTNNB1、CDKN1B、CANX,亲和度前50的基因KEGG富集得到PI3K-Akt信号通路、FoxO信号通路等134条.动物实验结果发现,一贯煎能够改善CCL4肝纤维化大鼠肝功能和减轻纤维化,降低α-肌动蛋白表达,促进信号转导和转录激活因子6(signal transducer and activator of transcription 6,STAT6)磷酸化,提高过氧化物酶体增殖物激活受体-γ展开更多
基金Supported by Natural Science Foundation of Yanbian University(2011-34)~~
文摘[Objective] This study aimed to investigate the biological characteristics of a Bacillus thuringiensis strain YNI-1, which has high virulence to Lepidoptera spp. [Method] The crystal protein of YNI-1 was analyzed by SDS-PAGE, and its indoor and field efficacy for Lepidoptera spp. was investigated. [Result] The parasporal crystal of YNI-1 has a diamond-like structure. The molecular weight of the original toxin protein is 136 kDa. After trypsin treatment, the original toxin protein was hy- drolyzed into active toxin protein with molecular weight of 63 kDa. For Plutella xy- Iostella and Pieris rapae, the indoor efficacy of B. thuringiensis was better than that of commercial B. thuringiensis （WP）. In view of field efficacy, rate of YNI-1 strain was higher than that of commercial B [Conelusion] YNI-1 strain has excellent development potential. the insects reduced thuringiensis （WP）.
文摘采用网络药理学的方法探究虎杖(Polygonum cuspidatum)治疗糖尿病心肌病(diabetic cardiomyopathy, DCM)的关键靶点和潜在作用机制.通过检索中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology database and analysis platform, TCMSP)和查阅文献,获得虎杖的主要活性成分并预测其潜在的作用靶点.利用GeneCards和在线人类孟德尔遗传(online Mendelian inheritance in man, OMIM)数据库获得DCM的作用靶点,并绘制Venn图获得二者的交集靶点.使用String数据库和CytoScape软件构建虎杖-有效成分-交集靶点网络和蛋白相互作用(protein-protein interaction, PPI)网络.通过注释、可视化和集成发现数据库(the database for annotation, visualization and integrated discovery, DAVID)在线分析工具进行基因本体论(gene ontology, GO)富集分析和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes, KEGG)富集分析,共筛选出15个虎杖有效活性成分以及214个治疗DCM的潜在作用靶点,主要涉及脂质和动脉粥样硬化通路、糖尿病并发症中的AGE-RAGE信号通路、IL-17信号通路、HIF-1信号通路、胰岛素抵抗通路、PI3K-Akt信号通路及凋亡通路等.这说明虎杖通过多成分、多靶点、多通路来发挥治疗DCM的作用.
文摘背景中药复方具有多成分综合调节的特点,在肝纤维化防治中显示出独特的优势.一贯煎始载于魏之琇所著《续名医类案》,是滋阴疏肝的著名方剂,能够改善肝纤维化症状,研究其抗肝纤维化机制有助于药物开发和推广.目的通过网络药理学探究一贯煎治疗肝纤维化的机制并实验验证.方法利用文献和TCMSP数据库收集一贯煎成分及靶点,GeneCard、OMIM数据库收集肝纤维化疾病靶点.通过STRING数据库构建一贯煎-肝纤维化蛋白互作网络(protein-protein interaction,PPI)子网络,应用重启随机游走算法获得关键基因,通过DAVID数据库进行基因本体(gene ontology,GO)富集分析及京都基因和基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析.动物实验验证,18只SD大鼠随机分为正常组、模型组、一贯煎组.模型组、一贯煎组大鼠采用腹腔注射50%四氯化碳(carbon tetrachloride,CCl_(4))橄榄油溶液造模6周,正常组注射等量橄榄油.造模结束后一贯煎组每天灌胃一贯煎溶液(6.67 g/kg)共4 wk,其他组灌胃等量蒸馏水,取血和肝脏.全自动生化仪检测血清丙氨酸转氨酶(alanine aminotransferase,ALT)和天冬氨酸转氨酶(aspartate aminotransferase,AST).HE、Masoon染色观察肝脏病理学变化.Western blot法和qRT-PCR法检测肝脏关键蛋白表达水平和mRNA转录水平.结果筛选得到一贯煎成分52个,潜在作用靶点186个,肝纤维化疾病靶点1080个,得到一贯煎治疗肝纤维化的关键基因,其中亲和度前10的基因为STAT6、SRC、MAPK3、STX1A、EP300、STAT3、PLG、CTNNB1、CDKN1B、CANX,亲和度前50的基因KEGG富集得到PI3K-Akt信号通路、FoxO信号通路等134条.动物实验结果发现,一贯煎能够改善CCL4肝纤维化大鼠肝功能和减轻纤维化,降低α-肌动蛋白表达,促进信号转导和转录激活因子6(signal transducer and activator of transcription 6,STAT6)磷酸化,提高过氧化物酶体增殖物激活受体-γ
