HowtoprepareMolecularBiologygradeglycogen
OverviewGlycogen can conveniently substitute for tRNA as a carrier for nucleic acid precipitation. Although Molecular Biology grade glycogen can be purchased from a number of vendors, the main disadvantage is that it is very expensive (e.g., About 100 dollars/20-40 mg).Here we present a simple and inexpensive protocol to prepare a large amount of glycogen which is suitable for any kind of Molecular Biology......阅读全文
Restriction-Digests-of-High-Molecular-Weight-Yeast-DNA
Purpose:To perform restriction digests of YACs for mapping using rare cutting enzymes or more conventional restriction endonuclease digestion.Time req
High-Molecular-Weight-Yeast-Liquid-DNA-Preparation
Purpose:To isolate intact, high molecular weight DNA from yeast cells for subcloning and rare cutting restriction enzyme analysis. One can expect a yi
Denaturing-Agarose-Gel-Electrophoresis-of-RNA
The overall quality of an RNA preparation may be assessed by electrophoresis on a denaturing agarose gel; this will also give some information about R
蛋白复合体直接酶消化法
Direct Enzymatic Digestion of Protein ComplexesSherry Niessen, Ian McLeod and John R. Yates IIIDepartment of Cell Biology, The Scripps Research Instit
细菌培养基
Preparation of LB Plate (Dr. Chastain)prepare LB plate with or without antibioticsBacterial Culture Media Recipes (WUGSC) M9 Plate Supplement (Gottsch
Protein-Staining-Procedures
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
Genome-Biology:为CRISPR选择最佳向导
细菌一直在与病毒或入侵核酸进行斗争,为此它们演化出了多种防御机制,CRISPR-Cas9 适应性免疫系统就是其中之一。规律成簇的间隔短回文重复CRISPR与内切酶Cas9的组合,可以在引导RNA的指引下,靶标并切割入侵者的遗传物质。 2012年研究者们利用这一特点,将CRISPR系统发展成了强大
Current-Biology:-凋亡细胞促进肿瘤生长
正常机体的细胞,保持着增值与凋亡的平衡。而肿瘤的发生正是由于这种平衡被打破,肿瘤细胞变成了永生的细胞。诱导肿瘤细胞凋亡一直被认为是治疗癌症的一个思路,但最新的研究表明,事情并没有那么简单。英国科研人员对淋巴瘤和黑色素瘤的研究发现,凋亡的细胞能促进肿瘤细胞的生长,肿瘤相关巨噬细胞(tumor-as
09候选院士最新PLoS-Biology文章
摘要: 记者报道,09候选院士中科院上海生科院上海药物研究所蒋华良课题组和神经科学研究所徐天乐课题组在《PLoS Biology》上联合发表了关于离子通道门控机制研究的论文(PLoS Biology, 2009, 7: e1000151),Inherent Dynamics of the Aci
Genome-Biology发文介绍RNA印记法
生物学家们逐渐意识到,RNA不只是DNA和蛋白之间的过渡产物,它对调节基因的表达有重要作用。深入研究RNA调控,能够帮助科学家们进一步理解相关疾病。 宾夕法尼亚大学的科学家们开发了分析RNA调控的新方法,这一方法能够有效获得RNA与RNA结合蛋白(RBP)互作的所有位点。这一发表在Geno
Genome-Biology:食物会影响DNA序列
牛津大学的研究人员在两种寄生虫中检测到了食物组分造成的DNA序列差异。他们在Genome Biology杂志上发表文章指出,食物能够影响生物的基因序列。 “生物从食物中获取原料构建自己的DNA。我们认为,食物组分可能应该能够改变生物的DNA。我们也许可以预测素食者熊猫与肉食者北极熊之间的基因差
山羊抗兔二抗(HRP标记)在诸多文献中的应用
在免疫学实验中,比如WB,IHC,IF等,大家都知道选着好正确的一抗,往往实验就成功了一大半,因此,往往很多研究者便会忽视对二抗,以及其它试剂盒品质的追求。二抗是一种相对而言比较稳定的产品,包装大,因此很多实验室都会公用一个二抗。但如果二抗没有选择好的话,影响的可能就是一整个实验室或者课题组了。艾美
丙烯酰胺胶中肽提取和蛋白消化技术
Digestion of Proteins and Extraction of Peptides from an Acrylamide GelSherry Niessen, Ian McLeod and John R. Yates IIIDepartment of Cell Biology, The
PCR-Primers-For-Gene-Expression-Detection-or-Quantification
Why PrimerBank?PrimerBank is a public resource for PCR primers. These primers are designed for gene expression detection or quantification (real-time
Immunofluorescent-Staining-of-Drosophila-Larval-Brain-Tissue
实验概要The Drosophila larval brain is a well-established model for investigating the role of stem cells in development. Neuroblasts (neural stem cells)
NFAT-and-Hypertrophy-of-the-heart-(Transcription-in-the-broken-heart)
Hypertrophy associated with both hypertension and obstruction to ventricular outflow leads to pathologic cardiac growth and it is associated with incr
Fluorescence-In-Situ-Hybridization-using-TSA™
实验概要This protocol describes steps for fluorescent in situ hybridization (FISH) to Drosophila embryos using Tyramide Signal Amplification (TSA™), and
Genotyping-Transgenic-Rodents-by-PCR
Genotyping Transgenic Rodents by PCRThis is how we test mice and rats for the presence of the transgene by PCR. It is provided for those investigators
安捷伦宣布加入How2Recycle®计划,以兑现环保承诺
——推出带有 How2Recycle® 标准化标签的包装并公示回收说明 2022 年 11月 23日,北京—— 安捷伦科技有限公司(纽约证交所:A)近日宣布公司已加入 How2Recycle®计划,How2Recycle® 是特拉华州非营利组织 Green Blue Institute的标准化标签系
包涵体表达蛋白的纯化方法
Joseph SambrookPeter Maccallum Cancer Institute and The University of Melbourne, AustraliaDavid W. RussellUniversity of Texas Southwestern Medical Cen
加强单抗研究,抢占发展先机Molecular-Devices
单克隆抗体(mAbs)作为潜在的治疗药物,持续受到广泛关注和期待。随着抗体偶联药物(antibody-drug conjugate)和双特异性抗体产品陆续进入市场,单克隆抗体的应用仍然是治疗发展的关键部分。虽然在抗体开发和放大过程中的一些关键步骤依然是一个重要挑战,但是高质量的单克隆抗体工程细胞
GPCRs药物研发和筛选Molecular-Devices-FLIPR
导言:如何加速药物研发进程?何种利器可解决药物开发的瓶颈?如何在宝贵而丰富的天然药物资源中开发出现代化新药?单抗、疫苗、重组蛋白等大分子药物爆发式增长,您期待最快速开发出新药从而占据一席之地吗? Molecular Devices公司针对药物开发过程中的最关键步骤提供了完整的解决方案。药物筛选,
CRISPR先驱Nature、Molecular-Cell连发重要成果
加州大学伯克利分校的Jennifer Doudna博士是CRISPR技术的共同开发者,曾因这一技术获得了“生命科学突破奖”(Breakthrough Prize),是CRISPRZL的有力竞争者。近日,Doudna接连在《自然》(Nature)和Cell出版社旗下子刊《分子细胞》(Molecul
Preparation-of-Lactobacillus-Competent-Cells
OverviewInstructions on how to prepare Lactobacillus plantarum competent cells before electrotransformation.MaterialsMRS mediaCulture of L. plantarum
细胞培养常规操作
常规操作(主要内容如下)· Aseptic Technique· Culture Vessels· Cell Counting· Primary Culture· Maintenance of Cell Line ·
Serum-Thawing--Heat-Inactivation
How to thaw serum:Serum that is stored at -10º C to -40º C is stable for extended periods of time. It is neither necessary or desirable to store serum
The-effect-of-temperature-on-the-embryonic-development-of-sea-urchins
Objective: This experiment aims to discover if temperature has an effect on the rates of sea urchin embryonic development. By altering the external en
T-cell-Activation-Protocol
IntroductionMature T cells recognize and respond to the antigen/MHC complex through their antigen-specific receptors (TCR). The most immediate consequ
Current-biology:多巴胺让我们更加渴望平等
如果有一个药片能让你更加富有同情心,更加愿意帮助不幸的人,你愿意吃下去吗?近日,来自美国加州大学伯克利分校的研究人员在这方面取得了重大进展,其研究结果在线发表在国际期刊current biology。 研究人员发现通过药物改变大脑前额皮质的神经化学平衡会导致参与者更加愿意参与亲社会行为,比如保
Current Biology:早期触摸经历塑造婴儿大脑
新生儿通过触摸感知世界。目前,研究人员测量了125名婴儿的大脑活动,结果显示最早期的触摸体验能持续影响其大脑对温和碰触的响应。这些婴儿包括早产儿和足月儿。相关论文近日发表于《当代生物学》期刊。研究人员表示,该成果还暗示了温和接触对婴儿感知正常发育十分重要。 “确保早产儿受到积极的触摸,例如与父