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Glass Pasteur pipettes

Company: Deltalab
Catalog#: 702
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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) ...

Lipid Droplet Isolation from Arabidopsis thaliana Leaves
Author:
Date:
2020-12-20
[Abstract]  

Lipid droplets (LDs) are neutral lipid aggregates surrounded by a phospholipid monolayer and specific proteins. In plants, they play a key role as energy source after seed germination, but are also formed in vegetative tissues in response to developmental or environmental conditions, where their functions are poorly understood. To elucidate these, it is essential to isolate LDs with good yields, while retaining their protein components. LD isolation protocols are based on their capacity to float after centrifugation in sucrose gradients. Early strategies using stringent conditions and LD-abundant plant tissues produced pure LDs where core proteins were identified. To identify more weakly bound LD proteins, recent protocols have used low stringency buffers, but carryover contaminants and

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[摘要]  [摘要]脂质滴(LDs)是被磷脂单层和特定蛋白质包围的中性脂质聚集体。在植物中,它们在种子发芽后作为能源起着关键作用,但由于发育或环境条件而对其功能了解甚少,它们也在营养组织中形成。为了阐明这些,必须分离出具有高产率的LD,同时保留其蛋白质成分。LD分离方案基于其在蔗糖梯度中离心后的漂浮能力。早期使用严格条件和LD丰富的植物组织的策略产生了可鉴定核心蛋白的纯LD。为了鉴定更弱结合的LD蛋白,最近的研究otocols使用了低严格性的缓冲液,但是残留污染物和低收率通常是个问题。我们已经开发了一种基于蔗糖梯度的方案,可使用Tween-20和新鲜组织从拟南芥叶中分离LD,以提高产量。在健康和细菌感染的拟南芥叶片中,该方案均允许鉴定LD蛋白,随后通过显微镜分析对其进行确认。

背景]脂质降住所(LD)的通过由磷脂单层,其中LD蛋白插入包围的中性脂质核心组成的细胞器(Tzen等人,1993) 。LD首先被描述为稳定的隔室,用于在特殊组织中存储高能脂质。然而,最近的评论将LDs描述为大多数细胞类型中存在的高度动态的细胞器,其功能超越了单纯的能量存储(Shimada等人,2018; Huang,2018; Shao等人,2019)。

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