Results 111 to 120 of about 209,042 (243)
拓扑异构酶2α受抑癌基因p53的调控并调节前列腺癌细胞的增殖能力
Zhongguo shiyan zhenduanxue, 2017 目的观察TOP2α对前列腺癌细胞增殖能力的影响以及抑癌基因p53对TOP2α的调控能力。方法以Lipofectamine2000试剂转染针对p53和非特异性对照组的siRNA,干扰前列腺癌细胞C4-2中p53的表达,采用Realtime PCR和Western Blot检测细胞内TOP2α的mRNA和蛋白水平表达变化;采用质粒转染法在293T细胞中过表达p53后检测TOP2α蛋白水平的变化,明确p53对TOP2α表达的影响 ...
梁婷婷, 王永坤, 王尧
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The Expression of PolySia/TriSia Associated Proteins and Genes on Developing Brain and the Effect of Dietary Sialic Acid Intervention in Piglets [PDF]
, 2015 摘要 研究背景：唾液酸（Sialicacid,Sia）是一类九碳单糖神经氨酸的总称，在细胞表面发挥其多种生物学功能。在体内，Sia通常以游离唾液酸、聚唾液酸（多聚/寡聚）、唾液酸衍生物（糖蛋白，糖脂）这三种形式存在。多聚唾液酸（polySialicacid,ploySia），一种唾液酸残基通过α2-8键连接而成的线性聚合物，广泛分布于在哺乳动物神经系统中，它的主要蛋白载体是神经细胞粘附因子（Neuralcelladhesionmolecule,NCAM）。PolySia-NCAM在细胞迁移、神经突生长 ...
任贺
core
Narrative power in the narrative policy framework
Policy Studies Journal, EarlyView.Abstract The Narrative Policy Framework lacks clear and empirical explanations of power. Yet, the study of narratives is inherently the study of power in shaping policy outputs and decisions. We develop a conceptual model positing that expressions of power (power to, with, and over) may be discovered in narrative constructs (e.g., narrative structure ...
Elizabeth A. Shanahan +8 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2016 目的探讨IKKɑ调控表皮角朊细胞的增殖和分化及与p63的关系。方法原代分离培养野生型（wildtype,WT）和Ikkɑ基因敲除小鼠（Ikkα-/-）的表皮角朊细胞（WT-KTC及Ikkα-/-KTC）,Western blot检测Ikkα-/-中p63的表达。含0.5mM Ca2+培养基刺激分化后,免疫荧光染色观察分化标记物Zonula occludens-1（ZO-1）及增殖标记物BrdU的表达。制备沉默p63表达的慢病毒并感染Ikkα-/-KTC,观察其增殖及分化能力的变化。结果在正常培养条件下 ...
沈燕君 +4 more
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Policy Studies Journal, EarlyView.ABSTRACT Based on the Punctuated Equilibrium Theory (PET) and implementation research, this study proposes an extended conceptualization of policy punctuation that enables researchers to systematically include policy implementation as part of a punctuation. The key mechanisms underlying the PET, i.e., policy image and venue, information processing, and
Bettina Stauffer
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2014 目的探讨CD4和CD28在多发性硬化患者中的表达变化。方法采用流式细胞术检测29例多发性硬化患者外周血CD4+、CD28+、CD4+CD28+的表达变化,采用EDSS量表对MS患者进行神经功能损伤评分。结果复发期MS患者CD4+表达明显高于缓解期MS和对照组,缓解期MS患者外周CD4+细胞明显表达高于对照组;复发期MS患者CD28+表达明显低于缓解期,缓解期明显低于对照组;CD4+CD28+三组比较无统计学差异;重度MS患者外周血CD4+表达高于中度,重度MS患者外周血CD28+表达低于中度,而CD4 ...
谭纳宇 +6 more
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Regulation of YY1 by SET7/9-mediated methylation [PDF]
, 2016 目前随着生活品质的改善和人类寿命的延长，许多老年疾病例如癌症成为人类常见的疾病，目前治疗癌症除了常规手段之外，一种伤害比较小的即表观遗传治疗手段逐渐被提上研究日程。 蛋白甲基化修饰系统对于基因组精密转录至关重要。蛋白甲基化酶和去甲基化酶通过对组蛋白动态修饰调控基因转录是表观遗传学“组蛋白密码子学说”的核心内容之一，其失调会导致包括癌症在内的多种疾病的发生。众所周知基因转录也受到转录因子的精密调控，然而甲基化修饰系统如何通过以转录因子为代表的非组蛋白底物调控基因转录的模式还不完全清楚 ...
徐欢腾
core
Gender Dimensions of Support for Local Policy: Resident, Policymaker, and Policy Gender
Policy Studies Journal, EarlyView.ABSTRACT There is a well‐established triadic relationship between satisfaction with public services, trust in leaders, and policy support in developed democracies. This study takes a novel approach by considering how gender is associated with the strength and direction of these connections, an element underexplored in the literature.
Aliza Forman‐Rabinovici, Itai Beeri
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 1991 以表达融合蛋白的载体PUR288以及高效表达载体PBV221作载体,在大肠杆菌内成功地表达了我国克隆的HPV6BVL_I基因,并对表达蛋白进行免疫学鉴定,对两种载体的表达情况进行了讨论。
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Zhongguo shiyan zhenduanxue, 2010 目的构建并筛选到能有效抑制TLR4基因表达的小干扰RNA表达载体,用于研究TLR4基因功能。方法 RNA干扰采用体外构建小干扰RNA表达载体法,将构建好的表达载体转染单核细胞株,分别用流式细胞术和实时荧光定量RT-PCR法检测TLR4蛋白和mRNA表达变化,筛选抑制效率最高的小干扰RNA表达载体。结果成功构建了TLR4小干扰RNA表达载体,并经电泳及测序证实;编号为S8-1的载体转染入细胞后,TLR4阳性率为27.03%,显著低于对照组的35.12%;流式细胞术和实时荧光定量RT ...
耿红莲 +6 more
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