CellCounting/LiveDeadDiscrimination

This is a microscopy based application for definitive discrimination of live and dead cells. Trypan Blue exclusion notoriously over estimates the number of dead cells. Using this protocol, you can obtain a more accurate count of cells.Stock solutionPrepare 3mg/ml ethidium bromide in absolute ethanol. Prepare Acridine Orange at 5mg/ml in absolute ethanol. Store this stock in a dark vial, refrigerated.Working......阅读全文

Cell-Counting/-LiveDead-Discrimination

This is a microscopy based application for definitive discrimination of live and dead cells. Trypan Blue exclusion notoriously over estimates the numb

DNA-Cell-Cycle

Solutions70% ethanolribonuclease (100 µg/ml DNase free, Sigma)propidium iodide ( 50 µg/ml in PBS)ProcedureHarvest cells. Spin at 1200 rpm for 5 minute

Cell-Stem-Cell

  |泛素连接酶HECTD1通过协调核糖体大小亚基的组装来调控造血干细胞的再生能力  造血干细胞(Hematopoietic stem cell, HSC)具有自我更新和分化的功能。在正常生理状态下,HSC处于休眠状态,其蛋白合成速度受到严格地调控并维持在较低水平。当机体受到损伤时,HSC 能够迅速

Measurement-of-Green-Fluorescent-Protein-Expression

 ReagentsCells to be studied expressing green fluorescent protein (GFP). Note that the same cell type without GFP is needed as control.Hoechst 33342 s

Cell-to-Cell-Adhesion-Signaling

Interactions between cells responsible for cell to cell adhesion also can communicate signals into the cellular interior, often involving interactions

如何修炼成流式高手之科研样本制备

为什么同一个配色,同一份实验步骤,但是最后实验结果却也变成“买家秀与卖家秀”。     我们来看看他的实验记录, 但是,如果是在做胞内染色的时候,死细胞对于实验结果的影响更大,但是普通的PI或者7AAD ,有会因为细胞需要固定,破膜而使所有细胞都是阳性。这个时候我们就需要使用到通用型死活细胞染料,这

Cell-Thawing/Cell-Freezing-Protocol

Freezing Cells:Cells should be growing well or known to be in log phaseCount, collect and pellet cells in a 15mL test tubeResuspend in freezing media

Cell-Thawing/Cell-Freezing-Protocol

Freezing Cells:Cells should be growing well or known to be in log phaseCount, collect and pellet cells in a 15mL test tubeResuspend in freezing media

Cell-Stem-Cell-|-连续取得进展!

  下丘脑含有惊人的异质性神经元,可调节内分泌,自主神经和行为功能。然而,其分子发育轨迹和神经元多样性的起源仍不清楚。2021年4月21日,中国科学院遗传与发育生物学研究所吴青峰团队在Cell Stem  在线发表题为“Cascade diversification directs generati

流式细胞仪做血细胞

Collect blood (75 microliters) into 1ml PBS containing 5 microM EDTA (10 microliters of 0.5 M stock) and mix immediately to prevent clotting. Keep tub

流式细胞仪做血细胞

Collect blood (75 microliters) into 1ml PBS containing 5 microM EDTA (10 microliters of 0.5 M stock) and mix immediately to prevent clotting. Keep tub

FACS-Analysis-Using-Peripheral-Blood-Cells

FACS Analysis Using Peripheral Blood CellsCollect blood (75 microliters) into 1ml PBS containing 5 microM EDTA (10 microliters of 0.5 M stock) and mix

In-Cell-ELISA

实验概要This protocol is a general protocol for ICE analysis and can be used with any of Abcam's ICE-validated antibodies. Antibodies are availabl

Cell-Stem-Cell发表重编程重要成果

  再生医学旨在通过细胞移植替换人体内受损的细胞、组织和器官,是一个发展迅速的新兴领域。胚胎干细胞(ESC)能够形成胎儿体内所有类型的细胞、组织和器官,被视为细胞治疗的宝贵资源。然而ESC在实际应用中遭遇了两大瓶颈,免疫排斥和伦理问题。  细胞重编程可以绕过人类胚胎干细胞的伦理争议,近年来受到了广泛

Cell-Stem-Cell:皮肤是突变的战场?

  正常皮肤含有混杂的突变细胞,但很少有最终形成癌症的,科学家现在发现了原因。剑桥大学桑格研究所和MRC癌症研究所的研究员通过基因工程小鼠,发现皮肤组织中的突变细胞会相互竞争,只有适者才能生存。  9月27日发表在Cell Stem Cell杂志上的研究结果显示,人类正常皮肤对癌症的抵抗力比之前想象

Cell-Stem-Cell揭示新癌症干细胞

  日前,Lawson健康研究所的研究人员在结肠中鉴定到了与癌症生长有关的新干细胞群体。这项研究发表在Cell Stem Cell杂志上,将给结肠癌研究和治疗带来显著改变。  结肠癌(colon cancer)是一种常见的消化系统恶性肿瘤,发病率占胃肠道恶性肿瘤的第三位。随着饮食习惯的改变和人口老龄

Cell-stem-cell:纯化人类细胞新技术

  多能干细胞研究之所以流行是因为在生物医学研究中,多能干细胞能够分化为任意细胞类型。但一些代表性的分化方法会导致异质性细胞群体的出现,这时候就需要将目的细胞进行纯化分离。  目前对这类细胞进行分离主要根据细胞表面的特征性受体不同,利用抗体进行分离筛选。但在一些情况下,这种分离方法的纯化水平很低,并

Cell-Stem-Cell综述:干细胞免疫调控

  免疫系统是我们机体对抗入侵病原体的第一道防线,也是组织发展,内环境稳态和伤口修复不可或缺的一部分。近年来,科学家们已越来越认识到免疫系统中的细胞和体液成分也有助于损坏组织的再生,比如四肢、骨骼肌肉、心脏和中枢神经系统中出现的损伤,因此在这一方面进行了大量的研究。   7月Cell Stem Ce

Cell-Stem-Cell:叩开干细胞的家门

  人类造血干细胞(HSC)可以通过造血过程生成成熟的血细胞,包括免疫系统的细胞。多年以来,科学家们一直在尝试解析调控造血干细胞功能和分化的具体机制。但这项工作并不简单,因为HSC只存在于骨髓的特殊区域(niche),体外培养很难重现这样的环境。  要对人类造血干细胞进行深入分析,就需要一个能够移植

Cosmid-Cloning:-Cell-preparation,-DNA-packaging,-and-Cell-Transfection

Cosmid Cloning: Cell preparation, DNA packaging, and Cell TransfectionProtocol taken from Stratagene's Gigapack packaging extracts instruction man

Cell-Stem-Cell:-帕金森发病机制新见解

  在帕金森等神经退行性疾病中,特定的神经元的死亡会导致患者出现运动问题和其他症状。长期以来,科学家们致力于发现这些神经元死亡的原因。  最近,来自洛克菲勒大学的研究人员发现,帕金森氏病中受影响的神经元实际上会处于“关闭”而非“完全死亡”的状态。研究小组发现,这些不死的神经元释放出的化学物质也会使他

Method:-Reactivating-Cell-Lines-and-Cell-Growth-for-DNA-Preparation

Purpose:Cell lines are reactivated and grown to a count of 1 x 108 cells. The cells are pelleted and stored frozen at -80 degrees C prior to DNA extra

Isolation-of-cell-nuclei-for-the-application-in-the-cellfree-system

Characteristics of the procedurePreparation of isolated nuclei - procedurePreparation of radioactive labeled nucleiMaterial Characteristics of the pro

Cell-Stem-Cell:揭示细胞炎症记忆机制

  当组织经历炎症时,它的细胞会记得。在炎症的高峰期,细胞将蛋白质固定在其遗传物质上,并将它们在最后斗争中所处的位置记下来。下次接触时,炎症记忆就会启动。这些细胞利用以前的经验来更有效地做出反应,即使是对它们以前从未遇到过的威胁也是如此。如果皮肤以前接触过刺激物,如毒素或病原体,它就会更快地愈合伤口

Working-Cell-Bank

1) Keep prepared solutions on ice.2) Determine total cell count of cells to be frozen. (e.g. 1 X 108 )3) Determine number of vials to be frozen. (e.g.

Cell-Cycles--Introduction

The onion root tip and the whitefish blastula remain as the standard introduction to the study of mitosis. The onion has easily observable chromosomes

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

Cryopreservation-of-Cell-Lines

AimThe protocol below describes the use of passive methods involving an electric -80ºC freezer for the cryopreservation of cell cultures. ECACC routin

CELL-MEMBRANE-PREPARATION

I.  Solutions: A.  Ca and Mg free Phosphate Buffered Saline (PBS) solution,   buffered with 0.02M Hepes.  pH=7.4 B.  Ca and Mg free PBS, buffered with

CELL-CYCLE-ANALYSIS

PROPIDIUM IODIDE: The most commonly used dye for DNA content/cell cycle analysis is PROPIDIUM IODIDE (PI). It can be used to stain whole cells or isol