MicroscopesinCellBiology
Microscopes in Cell BiologyIntroductionMicroscopy has a major role in the study of cells. From the very beginning, researchers have tried to develop ways of looking directly at living cells. This direct examination has revealed much about the morphology of cells and tissues. In recent years, developments in microscopes, dyes, staining protocols and preparation techniques have helped reveal even more about the structu......阅读全文
PLOS-Biology-:发现人体淋巴结构细胞竟抑制T细胞功能
淋巴器官的微环境可以通过结构和分子支持帮助机体维持健康的免疫功能。尽管在小鼠身上的研究已经发现小鼠体内的成纤维细胞网状细胞(fibroblastic reticular cells,FRCs)在淋巴结中创造了一种必需的T细胞支持结构,但是关于人类FRCs的功能却鲜有研究。 近日来自伯明翰大学、
南开大学生科院最新发表Nature-Chemical-Biology文章
来自南开大学生命科学学院,天津医科大学的研究人员发表了题为“Targeted delivery of nitric oxide via a ‘bump-and-hole’-based enzyme–prodrug pair”的文章,利用“bump-and-hole”策略,构建了一种新型的NO递送
想不到吧?PLOS-Biology:人体细胞内部温度可达50°C
作为细胞的“发电厂”,线粒体将营养分子氧化所释放的自由能的一部分,转化为ATP和细胞所需的其他有用的能量形式。然而,这种能量转换过程远没有达到100%的效率,而且释放的能量很大一部分被耗散为热能。这就提出了迄今为止尚未探索的,关于这种热量产生对线粒体和其他细胞成分温度影响的问题。 由于人类细胞
Redox-Biology:特异性抑制NADPH氧化酶2修饰慢性癫痫
活性氧(ROS)是重要的细胞间信号分子,其水平取决于ROS产生酶的活性和细胞的抗氧化能力。在生理条件下,ROS的生成和抗氧化剂的可用性之间存在稳定的平衡。当ROS水平超过细胞抗氧化防御时,就会产生氧化应激(OS),这是由于ROS产生过多或细胞抗氧化能力下降所致。 最近的工作表明,在癫痫持续状态
BMC-System-Biology发布超大规模进化树构建软件
中国科学院昆明动物研究所马占山团队与天津大学教授邹权、厦门大学科研人员联合发布了为千兆(GB)级基因序列数据构建进化树的软件HPTree。该软件使用谷歌Hadoop并行技术和美国加利福尼亚大学伯克利分校Spark集群大数据技术作为并行处理平台,利用计算机集群对基因序列大数据进行分割处理和整合,相
Current-Biology两篇文章解释:大脑做出选择的关键因素
中国科学院神经科学研究所、意大利国际高等研究院(SISSA)等机构在《Current Biology》发表了两篇背靠背文章,追踪了从感觉感受器到最终动作的感性决策过程。 目前就职于中国科学院神经科学研究所的左艳芳(Yanfang Zuo)此前作为SISSA的博后开始进行这项研究。与SISSA的
open-biology:解决细菌抗生素耐药性的新方法
抗生素耐药性是21世纪最难以解决的健康问题之一。科学家们将其与气候变化并列为新世纪的科学难题。2014年的报告指出,抗生素耐药性的泛滥将会在2050年造成3亿人的死亡。 如今,来自澳大利亚悉尼理工大学的Carolyn Michael等人正试图寻找新的解决方案。 细菌以及其它一些微生物具有短暂
Genome-Biology:胰腺癌肝转移的分子特征研究新进展
近日,中国科学院上海营养与健康研究所研究员李虹、李亦学研究组,与上海交通大学附属仁济医院主任医师孙勇伟、研究员薛婧、主任医师王理伟及研究员张志刚团队合作的研究成果,以Integrated genomic and transcriptomic analysis reveals unique cha
PLoS-Biology发表生物物理所和纽约大学合作研究项目成果
日前,《PLoS Biology》杂志在线发表了中国科学院生物物理研究所脑与认知国家重点实验室罗欢副研究员、刘祖祥副研究员和纽约大学David Poeppel教授的合作研究成果:Auditory cortex tracks both auditory and visual sti
nature子刊影响因子分别是多少
截至到2018年1月14日,Nature的子刊共有51本,如下: · Nature Astronomy · Nature Biomedical Engineering · Nature Biotechnology · Nature Catalysis · Nature Cell Bio
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
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.
Protocol-for-Cell-Fusion
Healthy Sp2/0 cells should be rapidly growing by this time. Sp 2/0 cells should be started about two weeks before the cell fusion. Every two days, the
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-cultures
1. Examine all flasks by inverted-phasemicroscopy. Cultures used for preservation should be grown free of antibiotics, show no signs of microbial cont
Maintenance-of-Cell-Culture
Maintenance of Cell CultureAuthor: Nanci DonackiSource: Contributed by Nanci DonackiDate Added: Tue May 14 2002Date Modified: Tue Apr 27 2004Abstract:
Cell-Sorting-By-FACS
Currently, the Moflo instrument (Dakocytomation) is used to sort cells at the AECOM FACS facility.Sorting is performed by the person in charge at the
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
Bacterial-cell-culture
MaterialsGlass culture tubes with metal caps and labelsGrowth medium, from media room or customizedGlass pipette tubesParafilmEquipmentVortexerFireboy
Competent-Cell-Preparation
实验概要Competent cells are those that possess more easily altered cell walls that DNA can be passed through easily. These cells readily incorporate f
Cell-counting/plating
OverviewCount the number of viable cells in a culture via dilution plating. The following assumes E. coli cells but it should apply to any type of cel
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
Master-Cell-Bank
PurposeTo describe the preparation of a Master Cell BankSafetySee SP 09-001 for lab safety considerations for the cell culture lab.EquipmentLaminar Fl
Cell-Viability-Assay
Dye exclusiona cell suspension is mixed with trypan blue and examined by low-power microscopyMaterialscellsPBSM3hemocytometer0.4 % trypan blue in PBSm
cell-proliferation-assay
cell proliferation assaybefore start:thaw cells from liquid nitrogen, grow in 75cc flask (T75) in Fischer's medium MM (maintenance medium) until c
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
Staining-Methods-for-cell
death Z. Xia 10/2/95The simplest way: trypan blue. Dead cells stain blueNon-fixed cells: FDA(fluorescein diacetate)-green, alive cells; P.I. (propidiu
Genome-Biology:新技术90分钟完成全基因组序列分析
美国国家儿童医院(Nationwide Children's Hospital)的研发人员最近在Genome Biology上发布了一个自主开发的分析软件,表示这个软件使寻找全基因组致病变异从几周缩短到按几十个小时。 第一个人类基因组测序完成耗时大约13年,耗费30亿美元,而现在技术测序技术的
Genome-Biology:联合鉴定肺癌筛查与临床预后生物标志物
肺癌是最常见的癌症类型,并且表现出复杂的发病机理和高度异质性,遗传因素是导致肺癌发生的风险之一,但目前其机制尚不清楚,研究发现13q12.12中的SNP rs753955(A> G)与中国人群中的肺癌发生风险高度相关。 2019年5月24日,南京医科大学孙玉洁、沈洪斌,昆明医科大学宋鑫等人在Ge