Research of TTA1,Tat,PEG modified gelatin-siloxane combined with siRNA transfecting C6 cells and inhibiting its EGFR gene expression [PDF]
, 2016 背景：脑胶质瘤是颅内最常见的恶性肿瘤，其预后差，治疗效果不佳，患者平均生存期短一直是世界性难题。近年来，随着现代医学和分子生物学的发展，基因治疗广受医学界的关注。RNA干扰（RNAi）是目前极具前景的脑胶质瘤基因治疗手段之一。脑胶质瘤基因治疗的关键因素之一在于基因载体系统。理想的基因载体系统，应具有能够穿透血脑屏障的能力、较高的基因转染效率、良好的胶质瘤细胞靶向性和生物相容性以及较高的稳定性和安全性等优点。本课题以明胶硅氧烷纳米粒子（GSNPs）修饰上亲水性聚乙二醇（PEG ...
胡洋
core
Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, EarlyView.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
S221T/D225Y mutations of Escherichia coli RecA can transfer RecA from cytoplasm to nucleus in HeLa cells [PDF]
, 2016 RecA/Rad51家族蛋白在进化上是非常古老而又保守的蛋白家族。大肠杆菌RecA基因在同源重组、DNA修复、SOS途径、突变和细胞分裂中起重要作用。人Rad51基因是大肠杆菌RecA基因的直向同源基因，两者起源于同一个祖先基因。人Rad51基因主要参与DNA的修复和重组，并且与肿瘤发生关系密切。原核细胞与真核细胞最大的区别在于原核细胞没有以核模为界限的细胞核，而蛋白质的入核转运机制是一个十分复杂的生物学过程，需要核孔复合体（NPC）、核定位信号(NLS)、核转运受体、RanGTP蛋白等共同参与 ...
孙旭利
core
Evaluating the empirical basis for threat attribution in the IUCN Red List
Conservation Biology, EarlyView.Abstract Understanding the impacts of different threats on species is key to successful conservation interventions and policies. The International Union for Conservation of Nature (IUCN) assesses threats to species, and the organization's Red List of Threatened Species is a key conservation tool.
Ena Humphries +5 more
wiley +1 more source
The structure and phylogenesis of olfactory receptor gene OR14J1 in ardeid birds [PDF]
, 2016 动物嗅觉受体（OlfactoryReceptor，OR）分布于嗅觉上皮而直接影响着嗅觉功能。哺乳类OR基因家族中位点相连于主要组织相容性复合体（MajorHistocompatibilityComplex，MHC）的基因比例最大，且邻近MHC的最常见OR14J1基因具有与MHC相关联的作用，动物通过嗅觉选择配偶能够有利于提高其免疫力和适应性。鸟类嗅觉以往被认为较弱而没有得到重视，近年来有关鸟类嗅觉基因的研究正在开始起步。 本论文在设计鹭科鸟类OR14J1通用引物的基础上，扩增鹭科鸟类OR14J1片段 ...
刘梦绮
core
Conservation Biology, EarlyView.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source
MNK, IRR and FGFR genes in Haliotis diversicolor: molecular cloning, expression analysis and identification of SNPs associated with growth traits [PDF]
, 2015 杂色鲍（Haliotisdiversicolor）是我国南方重要的养殖鲍种，研究与杂色鲍生长相关的基因，分析基因的表达规律，并筛查基因中与生长性状相关联的SNP位点，对于深入了解生长性状调控的分子机制，培育具有优良性状的新品种具有重要意义。本研究将MAPK互作激酶（MAPkinase-interactingkinase,MNK）、胰岛素相关多肽受体（Insulin-relatedpeptidereceptor,IRR）和成纤维细胞生长因子受体（Fibroblastgrowthfactorreceptor,
何佩茹
core
Geographic risks to functional groups of mammals and birds from habitat loss in Mexico
Conservation Biology, EarlyView.Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás +4 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2019 目的基于等位基因特异性PCR(allele-specific PCR,AS-PCR)原理,建立一种QPCR检测CLU基因与阿尔兹海默病(AD)相关性SNP位点基因型的筛选方法。方法根据CLU基因上的rs11136000,rs2279590和rs9331888 3个SNP位点设计特异性的野生型、突变型引物,使用实时荧光定量PCR(QPCR)对AD患者外周血样本进行SNP基因分型,以DNA基因测序法结果作为参考标准。结果 10例样本的QPCR定量分型结果显示 ...
李逸豪 +8 more
doaj
Studies on the effect of heat shock protein 90 (Hsp90) on centromeric region gene silencing in fission yeast [PDF]
, 2015 基因沉默(Genesilencing)作为一项保守的进化机制普遍存在于生物界中，主要是因为它可以保护生物体抵抗病毒、外来核酸的入侵和维持自身遗传稳定性等功能。我们通常所说的基因沉默发生在两种水平上：一是转录水平的基因沉默(Transcriptionalgenesilencing，TGS)，它是由于DNA甲基化、异染色质化及位置效应引起的；二是转录后基因沉默(Posttranscriptionalgenesilencing，PTGS ...
许丹
core