RNAiprotocol
siRNA protocolsOur current strategy with siRNA is to synthesis relatively small amounts enzymatically and use these to test for efficiency by western blotting. This allows us to test several candidate siRNAs quite cheaply. The yields are good enough for reasonable amounts of experimental work, but for larger use we get successful siRNAs synthesised chemically by Dharmacon.DesignThe Tuschl lab siRNA us......阅读全文
RNAi－protocol
siRNA protocolsOur current strategy with siRNA is to synthesis relatively small amounts enzymatically and use these to test for efficiency by western
RNAi
1995年，康乃尔大学的Su Guo博士在试图阻断秀丽新小杆线虫（C. elegans）中的par-1基因时，发现了一个意想不到的现象。她们本是利用反义RNA技术特异性地阻断上述基因的表达，而同时在对照实验中给线虫注射正义RNA（sense RNA）以期观察到基因表达的增强。但得到的结果是二者都同样
RNAi总结
RNA干涉（RNAi）是指双链RNA分子使基因表达沉寂的现象，是在线虫中发现的，在 1998年的一篇Nature论文中被公诸于众。过去几年中，科研工作者已明确转录后基因沉默现象普遍存在于动、植物中，在机体防御病毒入侵和转座子沉默效应中起着重要作用。近年来的研究表明，将与mRNA对应的正义RNA和反义
RNAi技术
DNA芯片检测siRNA专一性 长片断的双链RNA (dsRNA) 导入例如植物，真菌，果蝇，线虫等生物的细胞中会引发同源mRNA的降解——这就是所谓的RNA interference (RNAi)。RNAi分两个步骤，首先是长片断双链dsRNAs被核酶Dicer切割成21—25个碱基的sm
RLGS－protocol
A. Preparation of DNA SolutionIn the case of rice, for example This method may be appllicable for many grass species and some other plants.
ELISA－protocol
ELISA protocol：1.取5－10ul BMMY表达上清用0.05M NaHCO3稀释到100ul铺ELISA板，37度或室温振荡大于1小时。注意一定要做一个GS115空菌株表达上清作为阴性对照，最好还找一个带有histag的蛋白作为阳性对照。2.TPBS洗板3次，方法：倒掉铺板液，倒置于
NAi－protocol
siRNA protocolsOur current strategy with siRNA is to synthesis relatively small amounts enzymatically and use these to test for efficiency by western
ELISPOT－Protocol
实验概要The Elispot (Enzyme Linked Immuno-Spot) assay provides an effective method of measuring the antibody or cytokine production of immune cells on t
PCR－protocol
PCR reactionProtocol for 50µl reaction - adjust amounts if necessary, for a 20µl reaction use the same volumes of primer and dNTP-mix, but adjust the
Immunoprecipitation－Protocol
实验概要Immunoprecipitation is a procedure by which proteins or peptides that react specifically with an antibody are removed from solution and examined
ELISPOT－Protocol
实验概要The Elispot (Enzyme Linked Immuno-Spot) assay provides an effective method of measuring the antibody or cytokine production of immune cells on t
ELISPOT－protocol
实验概要The procedure below is a general guideline procedure for ELISPOT. Abcam ELISPOT kits have been designed for detection of various cytokines and g
Immunoblot－Protocol
This method was successful in our lab using prostate tissue and for our specific objectives. Investigators must be aware that they will need to tailor
RNAi的功能
1.高通量的研究基因功能在后基因组时代，需要大规模高通量的研究基因的功能，由于RNAi能高效特异的阻断基因的表达，因而RNAi成为研究基因功能的很好的工具。研究者将线虫三号染色体上2232个基因对应的dsRNA合成出来，并注射到线虫性腺内，然后观察子代细胞分裂时出现的异常表型，结果发现了133个基因
RNAi相关术语
1.RNAi ：（RNA interference）RNA干扰一些小的双链RNA可以高效、特异的阻断体内特定基因表达，促使mRNA降解，诱使细胞表现出特定基因缺失的表型，称为RNA干扰（RNA interference，RNAi ，也译作RNA干预或者干涉）。它也是体内抵御外在感染的一种重要保护机制
RNAi的特征
①RNAi是转录后水平的基因沉默机制；②RNAi具有很高的特异性，只降解与之序列相应的单个内源基因的mRNA；③RNAi抑制基因表达具有很高的效率，表型可以达到缺失突变体表型的程度，而且相对很少量的dsRNA分子（数量远远少于内源mRNA的数量）就能完全抑制相应基因的表达，是以催化放大的方式进行的；
RNAi－实验介绍
1. RNAi 介绍 RNA 干扰（RNAi:RNA interference）是由诺贝尔生理学/医学奖得主 Andrew Z. Fire 和 Craig C. Mello（1）在线虫实验中发现的，2001 年 Elbashir 等人发现哺乳类的 siRNA 可以进行 RNAi 诱导
RNAi－实验介绍
1. RNAi 介绍RNA 干扰（RNAi:RNA interference）是由诺贝尔生理学/医学奖得主 Andrew Z. Fire 和 Craig C. Mello（1）在线虫实验中发现的，2001 年 Elbashir 等人发现哺乳类的 siRNA 可以进行 RNAi 诱导。这个方法与常规方
Migration－Assay－Protocol
Materials to be prepared beforehand:1) FBS free medium2) 10% FBS medium3) Cell migration filter insert ( Transwell®, 12mm Diameter, 12 μm Pore Size.)P
Dot－Blot－Protocol
a. Label nitrocellulose membrane (using a pencil) to identify protein elution fractions.b . Pipette 2μl from each fraction onto the membrane, allow th
Urea－Lysis－Protocol
Urea lysis buffer 9M Urea, 2.5mM EDTA, 2.5mM EGTA, 1% DTE, 4% CHAPS make 10ml and aliquot 10x1ml, freeze at -70°C Lysate prepara
cDNA/AFLP－Protocol
Preparation of Para-magnetic beads from Promega cat#Z5482:a) suspend magnetic particles in bottle - transfer 200 ul (200 ug) of beads per sampleof RNA
Colony－PCR－Protocol
1. Pull out eight glycerol stock plates from the –80oC freezer and set on bench top to thaw. Be sure to remove the foil seal before leaving the plates
Cell－Extraction－Protocol
实验概要Primary tissues are valuable tools for the study of intracellular and extracellular markers which characterize disease states. We have developed
TAIL－PCR－Protocol
TAIL is a series of reactions that are intended to map where a T-DNA (transfer DNA) has inserted within the genome. The main components of the 3 react
Cytotoxicity－Assays－Protocol
Cytotoxicity Assays ProtocolCell-mediated cytotoxicity was determined by using a standard microcytotoxicity assay. Briefly, target cells were pelleted
Tissue－Harvest－Protocol
TISSUES TO BE PROCURED(minimally and preferably within 5-8 hours after death):1. Brain2. Liver3. Muscle4. Skin5: Others as the specific case dictatesP
Protocol－for－dsRNA－Synthesis
实验概要 We routinely produce dsRNA by in vitro transcription of a PCR generated DNA template containing the T7 promoter sequence on both ends
Intracellular－Staining－Protocol
1. Fix cells- Add16% formaldehyde directly into culture medium to obtain a final concentration of 1.5% formaldehyde.2. Incubate in fixative for 10 min
Sandwich－ELISA－Protocol
实验概要The Sandwich ELISA measures the amount of antigen between two layers of antibodies (i.e. capture and detection antibody). The antigen to be mea