siRNADesignGuidelines
Using siRNA for gene silencing is a rapidly evolving tool in molecular biology. There are several methods for preparing siRNA, such as chemical synthesis, in vitro transcription, siRNA expression vectors, and PCR expression cassettes. Irrespective of which method one uses, the first step in designing a siRNA is to choose the siRNA target site. The guidelines below for choosing siRNA target sites are based on both the......阅读全文
siRNA－Design－Guidelines
Using siRNA for gene silencing is a rapidly evolving tool in molecular biology. There are several methods for preparing siRNA, such as chemical synthe
Rules－of－siRNA－design－for－RNA－interference－(RNAi)
General GuidelinessiRNA targeted sequence is usually 21 nt in length.Avoid regions within 50-100 bp of the start codon and the termination codonAvoid
RNAi片段siRNA设计原则
RNAi target selection rules:Targeted regions on the cDNA sequence of a targeted gene should be located 50-100 nt downstream of the start codon (ATG).S
Long－PCR－Reagents－and－Guidelines
George Church Lab, Harvard Medical SchoolPCR_protocol.html">http://twod.med.harvard.edu/labgc/estep/longPCR_protocol.htmlEfficient Long PCR results fr
ELISA－Protocol－(General－Guidelines)
实验概要Sandwich enzyme-linked immunosorbent assays (ELISAs) involve attachment of a capture antibody to a solid phase support. Samples containing known
ELISA－Protocol－(General－Guidelines)
实验概要Sandwich enzyme-linked immunosorbent assays (ELISAs) involve attachment of a capture antibody to a solid phase support. Samples containing known
Guidelines－for－Aseptic－Rodent－Survival－Surgery
Introduction:Aseptic surgery is surgery performed without contamination or exposure to pathogens. These policies and guidelines are provided to help e
LongPCR－Reagents－and－Guidelines
Long-PCR Reagents and Guidelinesfrom George Church as Modified from Cheng et al. (1)General Guidelines for Long-PCR Conditions and Enzyme Mixtures====
PCR－Primer－Design（一）
Molecular Biology Today 2001. 2(2): 27-32. Vinay K. Singh and Anil Kumar Bioinformatics Sub-centr
PCR－Primer－Design（二）
Terminal Nucleotides Make a Difference Both the terminals of the primer are of vital importance for a successful amplification. The 3'-end
PCR－Primer－Design（三）
References Albert, J., and Fenyo, E.M. 1990. Simple, sensitive and specific detection of human immunodeficiency virus type 1 in clinical speci
TaqMan－Primer－and－Probe－Design
Adapted from TaqMan® One-Step RT-PCR Master Mix Reagents Kit InstructionDesign of Probes Keep the G-C content in the 20 to 80% range.Avoid runs of an
Guidelines－for－the－Use－of－Analgesics－and－Tranquilizers－in－Laboratory－Animal
What is Anesthesia? Anesthesia is a state of unconsciousness induced in an animal. The three components of anesthesia are analgesia (pain relief), amn
siRNA数据库与设计工具
siRNA DatabaseSearchable database of Silencer ™ Validated and Pre-designed siRNAs to >34,000 human, mouse, and rat targets. All siRNAs in the database
siRNA表达框架制备siRNA的方法介绍
siRNA表达框架（siRNA expression cassettes，SECs）是一种由PCR得到的siRNA表达模版，包括一个RNA pol Ⅲ启动子，一段发夹结构siRNA，一个RNA pol Ⅲ终止位点，能够直接导入细胞进行表达而无需事前克隆到载体中。和siRNA表达载体不同的是，SECs
The－TRC－shRNA－Design－Methods－and－Rules
OverviewWe design shRNA molecules with an algorithm. Our algorithm uses several criteria to rank potential 21mer targets within each human and mouse R
PCR－PRIMER－DESIGN－AND－REACTION－OPTIMISATION
ContentsFactors Affecting the PCR Nested Primer PCRPrimer LengthDegenerate PrimersElongation Temperature and TimeReaction BufferCycle NumberDenaturin
Design－Weighing－Processes－with－Quality－in－Mind
June 15, 2016 - Greifensee, SwitzerlandWith QbD-Quality by Design-weighing processes help ensure excellent consistency in final productsBy Tobias Woel
MethPrimer－－Design－Primers－for－Methylation－PCRs
Welcome to MethPrimer MethPrimer is a program for designing bisulfite-conversion-based Methylation PCR Primer. Currently, it can design primers for tw
siRNAs结合生物芯片的实验设计1
Ambion and Applied Biosystems have joined forces to provide a complete convenient, solution for performing gene silencing experiments and validating t
siRNA表达载体制备siRNA的方法介绍
多数的siRNA表达载体依赖三种RNA聚合酶Ⅲ启动子（pol Ⅲ）中的一种，操纵一段小的发夹RNA（short hairpin RNA，shRNA）在哺乳动物细胞中的表达。这三类启动子包括大家熟悉的人源和鼠源的U6启动子和人H1启动子。之所以采用RNA pol Ⅲ启动子是由于它可以在哺乳动物细胞中表
长距离PCR
· Long PCR (Church Lab)PCR conditioning for different templates, primer design, and moreLong PCR Reagents and Guidelines (Harusr/locald)Detail
BLOCKiT－RNAi－Designer
Allows you to design synthetic siRNA, Stealth RNA, or shRNA molecules from nucleotide target sequences, or convert an siRNA molecule sequence into a S
siRNA对照解析
A．普通阴性对照 1.siRNA实验应该有阴性对照；2.通用阴性对照为与目的基因的序列无同源性的普通阴性对照；3．Scrambled阴性对照和选中的siRNA序列有相同的组成，但是和mRNA没有明显的同源性；4．阴性对照需要确定和目的靶细胞中其它基因同源性很低。 B．荧光标记阴性对照 1. R
siRNA表达载体
多数的siRNA表达载体依赖RNA聚合酶III 启动子(pol III)中的一种，操纵一段45—50nt的发夹结构RNA（small hairpin RNA, shRNA）在哺乳动物细胞中的表达,shRNA在细胞内会自动被加工成为siRNA，从而引发基因沉默或者表达抑制。这一类启动子包括大家熟悉的人
siRNA的转染
将制备好的siRNA，siRNA表达载体或表达框架转导至真核细胞中的方法主要有以下几种： 1.磷酸钙共沉淀 将氯化钙，RNA(或DNA )和磷酸缓冲液混合，沉淀形成包含DNA 且极小的不溶的磷酸钙颗粒。磷酸钙-DNA 复合物粘附到细胞膜并通过胞饮进入目的细胞的细胞质。沉淀物的大小和质量对于磷酸钙转
siRNA表达框架
siRNA表达框架(siRNA expression cassettes，SECs)是一种由PCR得到的siRNA表达模版，能够直接导入细胞进行表达而无需事前克隆到载体中。这个方法最早是由Castanotto和其同事采用，包括一个RNA polⅢ启动子，一段发夹结构siRNA，一个RNA pol I
siRNA制备方法
体外制备1.化学合成许多国外公司都可以根据用户要求提供高质量的化学合成siRNA。主要的缺点包括价格高，定制周期长，特别是有特殊需求的。由于价格比其他方法高，为一个基因合成3―4对siRNAs 的成本就更高了，比较常见的做法是用其他方法筛选出最有效的序列再进行化学合成。最适用于：已经找到最有效的si
SiRNA用户指南
Selection of siRNA duplexes from the target mRNA sequenceUsing Drosophila melanogaster lysates (Tuschl et al. 1999), we have systematically analyzed t
siRNA的转染
将制备好的siRNA，siRNA表达载体或表达框架转导至真核细胞中的方法主要有以下几种： 1.磷酸钙共沉淀将氯化钙，RNA(或DNA)和磷酸缓冲液混合，沉淀形成包含DNA且极小的不溶的磷酸钙颗粒。磷酸钙-DNA复合物粘附到细胞膜并通过胞饮进入目的细胞的细胞质。沉淀物的大小和质量对于磷酸钙转染的成功至