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Dulbecco’s modified Eagle’s medium

Dulbecco''s Modified Eagle''s Medium - 高葡萄糖

Company: Sigma-Aldrich
Catalog#: D5671
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Fibrin Breakdown Assay
Author:
Date:
2020-04-20
[Abstract]  Fibrinolysis is an integral part of the matrix remodeling process that contributes to tissue repair. Fibrin clots are broken down during fibrinolysis in a controlled process. Fibrin degradation products (FDPs) have also been shown to have a role in the regulation of cell growth and are implicated in various vascular diseases. This protocol was designed to quantitatively measure the extent of fibrin breakdown and how this can be adapted as a tool to further investigate the pathway involved in fibrinolysis or fibrin degradation products. Until now, we haven’t found an alternative method to analysis fibrinolysis. [摘要]  [摘要] 纤维蛋白溶解是基质重塑过程中不可或缺的一部分,它有助于组织修复。在受控的过程中,纤维蛋白凝块在纤维蛋白溶解过程中被破坏。纤维蛋白降解产物(FDPs)也已显示出对细胞调节的作用。生长且与各种血管疾病有关。该协议旨在定量测量纤维蛋白分解的程度以及如何将其用作进一步研究纤维蛋白溶解或纤维蛋白降解产物的途径的工具。到目前为止,我们还没有发现了另一种分析纤维蛋白溶解的方法。

[背景 ] 在止血过程中,纤维蛋白既是纤维蛋白溶解的最终底物,又是凝血级联反应的主要产物(Cesarman-Maus 和Hajjar ,2005 ;Chapin和Hajjar,2015 )。对植入的生物材料的急性炎性反应,已表明血纤蛋白在白细胞的迁移进而发炎中起着重要作用(Yakovlev and Medved ,2018)。血纤蛋白溶解是一个严格调节的过程,通过该过程,富含血纤蛋白的血栓形成和降解,防止血凝块的生长(Amengual 和Atsumi ,2016)并有助于组织修复(Houslay 等人,2019)。在纤维蛋白溶解过程中,纤维蛋白凝块(凝血产物)被分解,纤维蛋白降解产物(FDPs)被分解。作为促有丝分裂因子的纤维蛋白可以促进内皮细胞,平滑肌细胞和成纤维细胞的增殖以及胆固醇沉积(Dong ...

Using xCELLigence RTCA Instrument to Measure Cell Adhesion
Author:
Date:
2017-12-20
[Abstract]  Cell adhesion to neighbouring cells and to the underlying extracellular matrix (ECM) is a fundamental requirement for the existence of multicellular organisms. As such, the formation, stability and dissociation of cell adhesions are subject to tight control in space and time and perturbations within the sophisticated adhesion machinery are associated with a variety of human pathologies. Here, we outline a simple protocol to monitor alterations in cell adhesion to the ECM, for example, following genetic manipulations or overexpression of a protein of interest or in response to drug treatment, using the xCELLigence real-time cell analysis (RTCA) system. [摘要]  细胞与相邻细胞和基础细胞外基质(ECM)的粘附是多细胞生物存在的基本要求。 因此,细胞粘附的形成,稳定和解离在时间和空间上受到严格的控制,复杂的粘附机制内的干扰与各种人类病理有关。 在这里,我们概述了一个简单的协议,以监测细胞粘附到ECM的变化,例如,在遗传操作或目标蛋白的过表达或响应药物治疗后,使用xCELLigence实时细胞分析(RTCA)系统。

【背景】负责细胞粘附到下面的ECM的主要分子是称为整联蛋白的跨膜异二聚体受体家族。整合素的激活和与ECM的结合触发向整合素胞质尾部募集大量信号传导,支架和细胞骨架蛋白。总之,这些粘附成分代表了负责调节许多重要细胞过程(包括细胞增殖,存活,迁移和分化)的复杂且高度动态的机制。与维持正常生理功能的重要角色一致,整合素介导的粘附和信号传导失调是许多人类疾病(包括出血性疾病,心血管疾病和癌症)发病的先导(Giancotti and Ruoslahti,1999;Bökeland Brown,2002; Huveneers and Danen,2009; Legate等人,2009; Bouvard等人,2013; Calderwood等人,2013; Horton等人,等,2015; Seguin等,,2015)。因此,整合素依赖性细胞 - 细胞外基质粘附的研究是一个研究热点,也是许多生物学领域广泛关注的课题。 ...

GC/MS-based Analysis of Volatile Metabolic Profile Along in vitro Differentiation of Human Induced Pluripotent Stem Cells
Author:
Date:
2017-12-05
[Abstract]  Human induced pluripotent stem cells (hiPSCs) are a promising tool in cell-based therapies for degenerative diseases. A safe application of hiPSCs in vivo, requires the detection of the presence of residual undifferentiated pluripotent cells that can potentially cause the insurgence of teratomas. Several studies point out that metabolic products may provide an alternative method to identify the different steps of cells differentiation. In particular, the analysis of volatile organic compounds (VOCs) is gaining a growing interest in this context, thanks to its inherent noninvasiveness. Here, a protocol for VOCs analysis from human induced pluripotent stem cells (hiPSCs) is illustrated. It is based on Solid-Phase Microextraction (SPME) technique coupled with gas chromatography-mass ... [摘要]  人诱导的多能干细胞(hiPSC)是用于退化性疾病的基于细胞的疗法中的有前景的工具。 hiPSCs在体内的安全应用需要检测残留未分化多能细胞的存在,这可能会导致畸胎瘤的爆发。几项研究指出,代谢产物可能提供了另一种方法来确定细胞分化的不同步骤。特别是挥发性有机化合物(VOCs)的分析由于其固有的非侵入性而在这方面越来越受到关注。在这里,说明了从人诱导的多能干细胞(hiPSC)分析VOC的方案。它基于固相微萃取(SPME)技术与气相色谱 - 质谱联用(GC / MS)。该方法用于测量从绒毛膜样品(CVS)到hiPSC的细胞重编程期间和沿着hiPSC体外分化成早期神经祖细胞(NP)的细胞顶空中的挥发性代谢物修饰,穿过胚状体机构(EBs)的形成。

【背景】提出细胞代谢作为在分化的各个步骤期间研究干细胞的替代物。事实上,假设干细胞从多能性向完全分化的转变可能引起代谢产物的剧烈变化是合理的。在诱导的多能干细胞,亲本成纤维细胞和胚胎干细胞之间观察到了这种假设的第一个证据(Meissen等人,2012)。

在代谢产物中,挥发性有机化合物(VOC)吸引了人们对其收集的简单性,内在的非侵入性和广泛的分析方法的广泛关注(Boots et。,2015 ...

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