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Tissue Culture Flask, 75 cm2 filter

Company: TPP
Catalog#: 90076
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Isolation of Extracellular Vesicles Derived from Mesenchymal Stromal Cells by Ultracentrifugation
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Date:
2020-12-20
[Abstract]  Extracellular vesicles (EVs) are a heterogeneous group of membranous vesicles that differ on their biogenesis and release pathways, such as exosomes, microvesicles and apoptotic bodies. They are involved in cell-to-cell communication delivering signal molecules (proteins, nucleic acids, lipids, etc.) that can regulate different physiological processes, as well as the development and progression of several diseases. There are different methods and commercial kits to isolate EVs and depending on the methodology one could obtain EVs with different degrees of efficiency, purity and it can be more or less time-consuming. Then, the choice has to be according to the different advantages and disadvantages, and their use for downstream applications. Here, we describe the EVs isolation ... [摘要]  [摘要]细胞外囊泡(EV多个),关于它们的生物合成和释放途径不同膜囊泡的一组异质小号,诸如外来体,微泡和凋亡小体。它们参与细胞间传递信号的信号分子(蛋白质,核酸,脂质等),这些信号分子可调节不同的生理过程以及几种疾病的发生和发展。分离电动汽车有不同的方法和商业工具包,根据方法学的不同,人们可以获得具有不同程度的效率,纯度的电动汽车,这或多或少会耗时。然后,必须根据不同的优缺点及其在下游应用中的用途进行选择。在这里,我们描述了通过超速离心从间充质基质细胞分离电动汽车的方法。可以使用通用培养基和缓冲液进行电动汽车隔离,并且仅需要分析型超速离心机即可。此外,该方法可用于获得电动车的大量再现性良好发展体外和体内实验,研究它们的生物学作用小号。


[背景]间充质干细胞(MSCs)对不同疾病的进展具有保护作用,有助于免疫调节和炎症状态(Bartholomew等,2002; Togel等,2005; Azmi等,2013; Ebrahimi等人,2013; Ben-Ami等人,2014)。它们的保护作用不仅归因于它们的转分化作用,还归因于它们的旁分泌机制,例如释放出具有免疫调节,抗炎,抗凋亡和促血管生成功能的细胞外小泡(EV)(Bruno等,2009; Camussi等)。 。,2010一个;农庄。等人,2020) ...

Flow Cytometric Quantification of Fatty Acid Uptake by Mycobacterium tuberculosis in Macrophages
Author:
Date:
2018-02-20
[Abstract]  Mycobacterium tuberculosis (Mtb) has evolved to assimilate fatty acids from its host. However, until recently, there was no reliable way to quantify fatty acid uptake by the bacteria during host cell infection. Here we describe a new method to quantify fatty acid uptake by intracellular bacilli. We infect macrophages with Mtb constitutively expressing mCherry and then metabolically label them with Bodipy-palmitate. Following the labeling procedure, we isolate Mtb-containing phagosomes on a sucrose cushion and disrupt the phagosomes with detergent. After extensive washes, the isolated bacteria are analyzed by flow cytometry to determine the level of Bodipy-palmitate signal associated with the bacteria. Using a Mtb mutant strain defective in fatty acid uptake in liquid culture we ... [摘要]  结核分枝杆菌(Mtb)已经发展为从其宿主吸收脂肪酸。然而,直到最近,还没有可靠的方法来量化宿主细胞感染期间细菌对脂肪酸的摄取。在这里,我们描述了一种新的方法来量化细胞内杆菌对脂肪酸的摄取。我们用Mtb组成性表达mCherry感染巨噬细胞,然后用Bodipy-palmitate代谢标记它们。标记程序后,我们在蔗糖垫上分离含有Mtb的吞噬体,并用去污剂破坏吞噬体。大量洗涤后,通过流式细胞术分析分离的细菌以确定与细菌相关的Bodipy-棕榈酸酯信号的水平。使用液体培养物中脂肪酸摄取缺陷的Mtb突变株,我们确定该突变体在巨噬细胞感染期间同化比野生型菌株少10倍的Bodipy-棕榈酸酯。脂肪酸摄取的这种定量方法可用于进一步鉴定参与细胞内Mtb和可能的其他细菌的脂质摄取的途径。

【背景】结核分枝杆菌(Mtb)同化宿主来源的脂质(脂肪酸和胆固醇)的能力使得病原体能够在其宿主内存活(Russell等人,2010; Lovewell 等人,2016)。在小鼠感染期间和在人肺组织中,通过巨噬细胞内的Mtb上调胆固醇和脂肪酸代谢相关基因来支持该想法(Schnappinger等人,2003; Rachman等人,2006; Rohde等人,2007;Fontán等人,2008; Tailleux等人,2008; Homolka et al。,2010; Rohde et ...

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