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| 1 | 应用抑制性消减杂交技术克隆丙型肝炎病毒非结构蛋白NS3反式激活的相关基因显示文摘目的:应用抑制性消减杂交技术(SSH)构建丙型肝炎病毒(HCV)非结构蛋白3(NS3)反式激活的相关基因cDNA消减文库,克隆HCV NS3反式激活相关基因。方法:以HCV NS3表达质粒pcDNA3.1(-)-NS3转染HepG2细胞,以空载体pcDNA3.1(-)为对照;制备转染后的细胞裂解液,提取mRNA并逆转录为cDNA,经RsaI酶切后,将实验组cDNA分成两组,分别与两种不同的接头衔接,再与对照组cDNA进行两次消减杂交及两次抑制性PCR,将产物与T/A载体连接,构建cDNA消减文库,并转染大肠杆菌进行文库扩增,随机挑选克隆PCR扩增后进行测序及同源性分析。结果:文库扩增后得到70个白色克隆,经菌落PCR分析,得到56个200-1000 b插入片段。对所得片段测序,并进行同源性分析,获得6个差异表达的未知序列,可能是NS3反式激活的新的靶基因。结论:成功构建HCV NS3反式激活的相关基因cDNA消减文库,为今后进一步分析、研究病毒蛋白的致病机制奠定基础。 | 牟劲松 刘妍 王刚 成军 段惠娟 李克 陆荫英 王琳 王惠芬 | 2003 | 世界华人消化杂志2003,11,4: | 20 |
| 2 | Daclatasvir plus asunaprevir in treatment-na?ve patients with hepatitis C virus genotype 1b infection显示文摘AIM To assess daclatasvir plus asunaprevir(d UAL) in treatment-na?ve patients from China's Mainland, Russia and South Korea with hepatitis C virus(HCV) genotype 1 b infection. METHODS Patients were randomly assigned(3:1) to receive 24 wk of treatment with d UAL(daclatasvir 60 mg once daily and asunaprevir 100 mg twice daily) beginning on day 1 of the treatment period(immediate treatment arm) or following 12 wk of matching placebo(placebodeferred treatment arm). The primary endpoint was a comparison of sustained virologic response at posttreatment week 12(SVR12) compared with the historical SVR rate for peg-interferon plus ribavirin(70%) among patients in the immediate treatment arm. The first 12 wk of the study were blinded. Safety was assessed in d UAL-treated patients compared with placebo patients during the first 12 wk(doubleblind phase), and during 24 wk of d UAL in both arms combined.RESULTS In total, 207 patients were randomly assigned to immediate(n = 155) or placebo-deferred(n = 52) treatment. Most patients were Asian(86%), female(59%) and aged < 65 years(90%). Among them, 13% had cirrhosis, 32% had IL28 B non-CC genotypes and 53% had baseline HCV RNA levels of ≥ 6 million IU/m L. Among patients in the immediate treatment arm, SVR12 was achieved by 92%(95% confidence interval: 87.2-96.0), which was significantly higher than the historical comparator rate(70%). SVR12 was largely unaffected by cirrhosis(89%), age ≥ 65 years(92%), male sex(90%), baseline HCV RNA ≥ 6 million(89%) or IL28 B non-CC genotypes(96%), although SVR12 was higher among patients without(96%) than among those with(53%) baseline NS5 A resistanceassociated polymorphisms(at L31 or Y93 H). during the double-blind phase, aminotransferase elevations were more common among placebo recipients than among patients receiving d UAL. during 24 wk of d UAL therapy(combined arms), the most common adverse events(≥ 10%) were elevated alanine aminotransferase and upper respiratory tract infection; emergent grade 3-4 laboratory abnormalities were infrequently observed, and all grade 3-4 aminotransferase abnormalities(alanine aminotransferase, n = 9; aspartate transaminase, n = 6) reversed within 8-11 d. Two patients discontinued d UAL treatment; one due to aminotransferase elevations, nausea, and jaundice and the other due to a fatal adverse event unrelated to treatment. There were no treatment-related deaths.CONCLUSION d UAL was well-tolerated during this phase 3 study, and SVR12 with d UAL treatment(92%) exceeded thehistorical SVR rate for peg-interferon plus ribavirin of 70%. | Lai Wei Fu-Sheng Wang Ming-Xiang Zhang Ji-Dong Jia Alexey A Yakovlev Wen Xie Eduard Burnevich Jun-Qi Niu Yong Jin Jung Xiang-Jun Jiang Min Xu Xin-Yue Chen Qing Xie Jun Li Jin-Lin Hou Hong Tang Xiao-guang Dou Yash Gandhi Wen-Hua Hu Fiona McPhee Stephanie Noviello Michelle Treitel Ling Mo Jun Deng | 2018 | World Journal of Gastroenterology2018,24,12: | 17 |
| 3 | 丙型肝炎病毒非结构蛋白NS3与乙型肝炎病毒X蛋白协同反式激活作用的研究显示文摘构建丙型肝炎病毒(HCV)非结构蛋白 3(NS3)的重组表达质粒pcDNA3 1(- ) NS3和表达乙型肝炎病毒 (HBV)X蛋白的重组质粒pcDNA3 1(- ) X ,分别瞬时转染肝母细胞瘤细胞系HepG2细胞 ,用免疫印记 (Westernblotting)方法鉴定病毒基因的表达。两个表达质粒分别及同时与报告质粒pCAT3 promoter共转染HepG2细胞 ,检测报告基因氯霉素乙酰转移酶 (CAT)的表达水平 ,酶的活性反映了表达的肝炎病毒蛋白对SV4 0病毒早期启动子功能的影响。结果显示 ,两个重组表达载体pcDNA3 1(- ) NS3及pcDNA3 1(- ) X在HepG2细胞均能瞬时表达相应的肝炎病毒蛋白 ;单独共转染实验中 pcDNA3 1(- ) NS3、pcDNA3 1(- ) X组的CAT的表达分别是对照的 3 5倍和 4 4倍 ,两种质粒共同转染时酶的表达是对照的 8 5倍 ;表达质粒对CAT酶表达的激活作用呈剂量依赖性。研究表明 ,HepG2细胞中表达的HCVNS3蛋白和HBVX蛋白均具有反式激活SV4 0早期启动子的功能 ,并且两种蛋白的反式激活功能具有协同特性。本实验有助于解释HCV、HBV感染 ,尤其是共同感染的致病 (癌 ) | 刘妍 成军 牟劲松 陆荫英 王建军 杨倩 王琳 张玲霞 | 2003 | 解放军医学杂志2003,28,1: | 15 |
| 4 | 丙型肝炎病毒非结构区NS3基因在大肠埃希菌中的可诱导性表达显示文摘目的 构建丙型肝炎病毒 (HCV)NS3基因的原核细胞表达载体 ,实现在大肠埃希菌中的可诱导性表达。方法 应用聚合酶链反应 (PCR)技术 ,以美国HCV H株全长cDNA质粒为模板 ,扩增获得NS3基因片段 ,克隆到原核表达载体pET 30C(+)中 ,构建原核表达载体pET NS3,转化BL2 1(DE3)宿主菌 ,以IPTG诱导 ,获得NS3蛋白的可诱导性表达 ,以HCVNS3的单链可变区抗体 (ScFv)证实表达的NS3蛋白的特异性。结果 以HCVNS3基因序列特异性引物 ,PCR扩增获得 1893bp的NS3DNA片段 ,插入pET 30C(+)表达载体。转化BL 2 1(DE3)受体菌 ,经培养、IPTG诱导 ,获得了重组HCVNS3蛋白的表达 ,以HCVNS3的ScFv证实了表达的重组蛋白HCVNS3的特异性。 | 成军 钟彦伟 刘妍 董菁 杨继珍 杨守纯 | 2002 | 中华实验和临床病毒学杂志2002,16,1: | 12 |
| 5 | 猪瘟病毒NS3基因克隆、原核表达及间接ELISA方法初步建立显示文摘采用PCR方法从携带猪瘟病毒兔化弱毒(Hog cholera lapinized virus,HCLV)全长基因组cDNA的质粒pPOHCLV中扩增到长度为2000bp左右NS3基因序列,并将其克隆至原核表达载体pET-32a(+),构建成重组原核表达载体pETNS3。将pETNS3在大肠杆菌Rosetta(DE3)中进行优化表达,SDS-PAGE分析重组蛋白NS3主要以包涵体形式表达,分子大小约95kD。Western Blotting分析表明重组蛋白NS3具有免疫原性。采用Ni+亲和层析方法纯化得到重组蛋白NS3(90%)。以纯化的重组蛋白NS3为抗原初步建立了检测CSFVNS3抗体的间接ELISA方法,检测221份不同猪群和年龄猪的血清样品。检测结果与IDEXX公司CSFV-Ab检测试剂盒检测结果进行对比,阳性符合率为83.33%,阴性符合率为89.38%,总符合率为86.43%。30份存在差异的血清样品用间接免疫荧光法(Indirect immunofluorescence assay,IFA)进行检测,结果显示IFA检测结果与NS3间接ELISA和IDEXX公司CSFV-Ab检测试剂盒符合率分别为56.67%和43.33%。 | 蒋大良 余兴龙 李润成 葛猛 罗维 颜爱 李杰 刘春红 涂长春 | 2010 | 微生物学通报2010,37,1: | 11 |
| 6 | 无线通信与网络系统性仿真实验设计显示文摘为培养学生系统性、工程性思维,采用NS3中的WiFi模块设计了MAC协议性能分析仿真实验,围绕一个整体的电子信息系统、通信系统与计算机网络系统,构建了科学、系统和相对独立的系统性教学实验体系,完成自底层的器件到高层网络和系统的逐步递增模式的全过程工程实践环节。通过实验说明系统性软件在无线通信与网络课程群实验设置中的意义。 | 孙彦景 陈岩 芦楠楠 李松 王艳芬 张晓光 | 2018 | 实验技术与管理2018,35,11: | 10 |
| 7 | Effect of hepatitis C virus nonstructural protein NS3 on proliferation and MAPK phosphorylation of normal hepatocyte line显示文摘AIM: To study the effect of hepatitis C virus nonstructural region 3 (HCV NS3) pro, in on proliferation and transformation of normal human liver cell line.METHODS: QSG7701 cells were transfected with pRcHCNS3-5; pRcHCNS3-3' and pRcCMV using lipofectamine transfecting technique and selected with G418 method. Expression of HCV NS3 protein was determined by immunohistochemistry. Biologic characteristics of transfected cells were evaluated by population doubling time and soft agar assays. Activation of MAPK was analyzed using Western blot with phosphospecific monoclonal antibody against dually phosphorylated MAPK.RESULTS: QSG7701 cells transfected with pRcHCNS3-5' showed strong intracellular expression of HCVNS3 protein,and the positive signal was localized in cytoplasm. The expressing strength of HCVNS3 protein in pRcHCNS3-3'-transfected cells was weaker than that in pRcHCNS3-5'-transfected cells. The population doubling time in the transfected cells with pRcHCNS3-5' (12 h) was much shorter than those with pRcHCNS3-3; pRcCMV and normal cells (24, 26, 28 h, respectively) (P<0.01). The transfected cells with pRcHCNS3-5' showed much more anchorage independent colonies than that in those with pRcHCNS3-3' and pRcCMV (P<0.01). The cloning efficiencies of transfected cells with pRcHCNS3-5', pRcHCNS3-3',pRcCMV and controls were 33%, 1.33%, 1.46%, 1.11% respectively. The level of phosphorylated MlAPK in the cells with pRcHCNS3-5' was much higher than that in those with pRcHCNS3-3'and pRcCMV and normal cells (P<0.01). CONCLUSION: The results suggest that (1) QSG7701 cells are a better human liver cell line for investigating the pathogenesis of HCV NS3 protein. (2) 5' region of the HCV genome segment encoding HCV NS3 is involved in cell growth and cell phenotype. (3) HCV NS3 N-terminalpeptide may up-regulate the activation of rMAPK, but not affect the expression of MAPK. | De-YunFeng YiSun Rui-XueCheng Xiao-MingOuyang HuiZheng | 2005 | World Journal of Gastroenterology2005,11,14: | 8 |
| 8 | 献血者血清中HCV NS3和核心蛋白抗原的检测及临床意义显示文摘 | 郭满盈 李谋深 李保仝 杨毓华 | 2001 | 中国输血杂志2001,14,2: | 7 |
| 9 | Cloning and expression of NS3 cDNA fragment of HCV genome of Hebei isolate in E.coli显示文摘CloningandexpressionofNS3cDNAfragmentofHCVgenomeofHebeiisolateinE.coliZHUFenLu,LUHaoYing,LIZhuoandQIZhongTianSubjectheadin... | Zhu, FL Lu, HY Li, Z Qi, ZT | 1998 | World Journal of Gastroenterology1998,4,2: | 7 |
| 10 | Genetic diversity of the hepatitis C virus: Impact and issues inthe antiviral therapy显示文摘The hepatitis C Virus (HCV) presents a high degree of genetic variability which is explained by the combination of a lack of proof reading by the RNA dependant RNA polymerase and a high level of viral replication. The re- sulting genetic polymorphism defines a classification in clades, genotypes, subtypes, isolates and quasispecies. This diversity is known to reflect the range of responses to Interferon therapy. The genotype is one of the pre- dictive parameters currently used to define the antiviral treatment strategy and the chance of therapeutic suc- cess. Studies have also reported the potential impact of the viral genetic polymorphism in the outcome of antivi- ral therapy in patients infected by the same HCV geno- type. Both structural and non structural genomic regions of HCV have been suggested to be involved in the Inter- feron pathway and the resistance to antiviral therapy. In this review, we first detail the viral basis of HCV diversity. Then, the HCV genetic regions that may be implicated in resistance to therapy are described, with a focus on the structural region encoded by the E2 gene and the non- structural genes NS3, NS5A and NS5B. Both mechanisms of the Interferon resistance and of the new antiviral drugs are described in this review. | H Le Guillou-Guillemette S Vallet C Gaudy-Graffin C Payan A Pivert A Goudeau F Lunel-Fabiani | 2007 | World Journal of Gastroenterology2007,13,17: | 6 |
| 11 | 复杂混合网络中拥塞控制算法仿真实验设计显示文摘拥塞控制是计算机网络课程中的一个重点和难点。文章通过引入NS3网络仿真工具,对构建复杂混合网络实验环境的方法和步骤进行了论述,并在4∶4哑铃网络拓扑结构的基础上,实现了多个网络实验场景;以拥塞窗口大小为依据,对常见的多种拥塞控制算法进行了理论验证性实验;以吞吐量为依据,对同类拥塞控制算法之间的公平性和异类拥塞控制算法之间的友好性进行了对比实验。实验结果与理论分析相符,并对拥塞控制的算法思路和控制过程进行了形象直观的展示。 | 姜雨菲 梁向阳 | 2021 | 实验技术与管理2021,38,1: | 5 |
| 12 | 牛病毒性腹泻病毒非结构蛋白NS3的表达及ELISA检测方法的建立显示文摘本研究旨在建立一种检测牛病毒性腹泻病毒(BVDV)抗体的间接ELISA方法。将BVDV的非结构蛋白NS3基因克隆到原核表达载体pET-32a中进行表达,将纯化后的蛋白作为包被抗原,优化ELISA条件,建立了BVDV抗体间接NS3-ELISA检测方法,并对该方法的特异性、敏感性和重复性进行检测,结果均较好。用所建立的NS3-ELISA方法检测从广西各牛场采集的475份牛血清样品,检出率为24.8%,与商品化试剂盒比较,符合率为97%。结果表明,本研究建立的NS3-ELISA方法简便、快捷,可大批量检测,适用于BVDV的诊断、抗体水平监测及流行病学调查。 | 范晴 谢芝勋 谢志勤 刘加波 庞耀珊 邓显文 谢丽基 罗思思 | 2014 | 中国畜牧兽医2014,41,5: | 4 |
| 13 | 基于NS3的无线自组网仿真实现显示文摘该文首先介绍了NS3.20在Fedora20环境下的安装过程,并重点介绍了无线自组网的拓扑设计及仿真程序设计过程,最后用NS3仿真了无线自组网通信的过程。 | 陈运海 | 2014 | 电脑知识与技术(过刊)2014,20,12X: | 4 |
| 14 | 超短波电台通信网络中的自组网路由协议应用研究显示文摘针对临时组网通信过程中使用超短波电台作为常用的通信手段,讨论了自组网技术在超短波电台通信网络过程中,组网路由协议在实现高效组网和有效数据传输所起的关键作用。进而设计了一种适用于军事指挥、抗震救灾等野外临时性工作的应用场景,对不同自组网路由协议进行了比较研究,并通过仿真和评估测试路由协议在超短波电台通信网络中负载情况及数据投递情况,从数据投递率和归一化路由负载两方面对路由协议进行了性能比较和分析。实验数据表明,DSR协议的性能表现具有明显的优势,分组投递率高,路由负载较小,比较适合移植到超短波电台通信网络中使用。此外,AODV协议具有较小的路由负载,也可应用于低带宽的超短波电台通信网络。 | 龚贻华 杜华 李石兵 钟晓峰 | 2017 | 井冈山大学学报(自然科学版)2017,38,4: | 4 |
| 15 | 抗HCV NS3抗原单克隆抗体的研制与初步鉴定显示文摘 | 郭满盈 李谋深 李越希 李保仝 杨毓华 | 2000 | 细胞与分子免疫学杂志2000,16,3: | 4 |
| 16 | 基于NS3的移动认知网络仿真系统显示文摘针对目前认知网络研究对实际网络动态性考虑欠佳且缺乏验证相关理论的成熟原型和仿真系统的现状,研究并实现了一种基于新型网络模拟器NS3的移动认知网络仿真扩展系统MCRENS3。该仿真系统扩展了认知无线电的频谱感知、授权用户检测、和频谱切换等功能,充分考虑了认知网络用户的移动性。实验结果及性能分析验证了MCRE-NS3仿真系统的准确性和可行性,并可扩展到实际大规模无线网络的应用中,为提高频谱资源利用率提供重要的验证工具。 | 崔翠梅 杨德智 姜程鑫 | 2016 | 通信技术2016,49,11: | 4 |
| 17 | 基于Q学习的Ad Hoc网络路由协议的改进与研究显示文摘采用Q学习可以有效保证Ad Hoc网络的可靠性,该文将启发Q学习算法应用在备用多径按需路由协议的路由寻找中,融合传统Q学习算法根据网络状态适当的调整路由周期寿命,提高路由对动态变化的业务分布的自适应性。建立NS3网络模型对无线网络的时延、吞吐量及开销等主要性能指标进行理论分析,研究结果表明:优化后的路由协议更加适用于状态多变的移动Ad Hoc网络。 | 刘芬 隋天宇 王叶群 | 2019 | 计算机与数字工程2019,47,2: | 4 |
| 18 | 在线虚拟实验及教学一体化平台构建思想及实践显示文摘高校实验教学是培养学生创新能力的重要环节,已引起方方面面的重视,然而,实验设备的匮乏,实验教学手段的陈旧,已经成为了制约实验教学水平提升的两大瓶颈。单纯利用虚拟实验软件进行虚拟化实验建设,可以有效解决实验设备不足的问题,但却难以解决提升教学手段的问题,因为这些虚拟实验软件往往处理能力不足,难以融入各类教学功能。通过将虚拟实验软件和WEB技术进行一体化构建,用WEB技术担当基础运行平台,将虚拟实验软件改造成实验服务平台,可以有效地将实验和教学有机联结在一起。NS3是一款开源的虚拟网络软件,按此思想成功地将NS3和WEB技术进行一体化构建,改造成在线网络实验教学平台,将网络实验和教学管理的过程无缝连接起来,集网络实验实施、网络实验回放及指导、实验评价于一体,既节约了大量资金,又能提高实验教学水平,该平台已在同济大学软件学院进行了试运行,效果良好。 | 金伟祖 姚熠晹 陈显涛 | 2015 | 实验室科学2015,18,3: | 4 |
| 19 | HCV全长NS3基因表达及在抗体检测中的应用显示文摘Full length NS3 gene of a hepatitis C virus was amplified by PCR using plasmid pBAC25 containing HCV nonstructural protein gene as template. The amplified fragment (about 1.8 kb) was cloned into plasmid pQE30 and the recombinant plasmid was expressed in JM109. The NS3 protein was purified by NiSO 4 metal chelating resin, and its antigenecity was determined by ELISA, the results showed that the full length NS3 protein was more sensitive than the commercial carboxy terminal domain of NS3 protein in HCV antibody detection. | 张斌 叶林柏 郜金荣 徐进平 阮华 王晓玲 赵月娥 | 2000 | 中国病毒学2000,15,3: | 3 |
| 20 | HCV NS3 N 末端部分氨基酸缺失对NS3/NS3与NS3/NS4A分子间相互作用的影响显示文摘目的旨在弄清NS3参与分子间相互作用的确切区段,为研究针对NS3的抗HCV寡肽小分子药物的设计提供依据。方法参照HCV中国河北株序列设计NS3引物,将其N末端的前15个和前30个氨基酸分别缺失掉。然后用酵母双杂交系统检测NS3/NS3及NS3/NS4A分子间相互作用强度在缺失前后的变化,从而判明NS3N末端氨基酸在分子间相互作用中的意义。核苷酸序列分析采用AppliedBiosystem373A型自动测序仪。结果NS3N末端氨基酸缺失前后,NS3/NS3分子间及NS3/NS4A分子间相互作用的强度相差有显著性(P<0.01),但缺失15个氨基酸和缺失30个氨基酸对上述相互作用强度的影响差异无显著性(P>0.05)。结论NS3N末端的1~30个氨基酸在NS3/NS3及NS3/NS4A分子间相互作用中有一定意义,其N末端前15个氨基酸(APITAYSQQTRGLLG)对于分子间相互作用更为关键。本研究结果将为抗NS3丝氨酸蛋白酶活性的寡肽抑制物的研究打下基础。 | 欧武 杨翠红 朱千政 邓小艺 于曼 秦鄂德 杨佩英 | 1998 | 中华微生物学和免疫学杂志1998,18,5: | 3 |