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ACK Lysing Buffer (1X)

ACK裂解缓冲液100 ml

Company: Lonza
Catalog#: 10-548E
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Isolation of Highly Pure Primary Mouse Alveolar Epithelial Type II Cells by Flow Cytometric Cell Sorting
Author:
Date:
2016-11-20
[Abstract]  In this protocol, we describe the method for isolating highly pure primary alveolar epithelial type II (ATII) cells from lungs of naïve mice. The method combines negative selection for a variety of lineage markers along with positive selection for EpCAM, a pan-epithelial cell marker. This method yields 2-3 x 106 ATII cells per mouse lung. The cell preps are highly pure and viable and can be used for genomic or proteomic analyses or cultured ex vivo to understand their roles in various biological processes. [摘要]  在这个协议,我们描述从初始小鼠的肺分离高纯度原发性肺泡上皮细胞类型(ATII)细胞的方法。该方法结合对多种谱系标志物的阴性选择以及对于Ep上皮细胞标记物EpCAM的阳性选择。该方法每小鼠肺产生2-3×10 6个ATII细胞。细胞制品是高度纯的和可行的,并且可以用于基因组或蛋白质组分析或培养离体以了解他们在各种生物过程中的作用。

[背景] 肺的内表面由上皮细胞排列,上皮细胞的类型在形态上和功能上随着肺内的位置而变化。 ATII细胞是两种类型的上皮细胞中的一种,其排列在肺泡壁上并且已经被描述为在表面活性剂合成和分泌中起关键作用。它们也是肺内第一道防线的一部分,并且涉及在肺部感染或过敏期间引发和调节免疫应答。它们还被认为在远端肺中充当具有增殖能力和损伤后修复上皮的能力的祖细胞。 ATII分离的可用方法不产生超过80-85%纯度的细胞制品,使得它们不适合于mRNA和蛋白质表达的可靠分析。本文所述的方法是对现有方法的改进,并产生具有最高纯度的小鼠原代ATII细胞制备物,因此可以可靠地用于表达分析。对于该方法的进一步讨论,我们将读者指向该协议起源的原始出版物(Sinha等人,2016)。

Phagocytosis Assay to Measure Uptake of Necroptotic Cancer Cells by BMDCs
Author:
Date:
2016-11-05
[Abstract]  This protocol is a flow cytometry-based method to measure the phagocytosis efficiency of necroptotic target cells by bone marrow-derived dendritic cells (BMDCs) in vitro (Aaes et al., 2016). The method is a slightly modified and updated version of the protocols used in previously published papers (Krysko et al., 2006; Brouckaert et al., 2004). In brief, the target cells are labeled with a CellTrackerTM dye before they are induced to undergo cell death. After a co-culture period of 2 h with BMDCs, the cells are immunostained with a dendritic cell marker and dead cell marker, and the phagocytic efficiency is quantified using a flow cytometer. This protocol can readily be used for target cells undergoing cell death modalities other than ... [摘要]  该方案是基于流式细胞术的方法,以测量骨髓来源的树突细胞(BMDCs)在体外的坏死性靶细胞的吞噬效率(Aaes等人 2016)。该方法是先前发表的论文中使用的方案的稍微修改和更新的版本(Krysko等人,2006; Brouckaert等人,2004)。简言之,在细胞被诱导经历细胞死亡之前,用CellTracker TM TM染料标记靶细胞。在用BMDCs共培养2小时后,用树突细胞标记物和死细胞标记物对细胞进行免疫染色,并使用流式细胞仪定量吞噬效率。该方案可以容易地用于经历除坏死作用以外的细胞死亡模式的靶细胞。

[背景] 研究BMDCs吞噬细胞摄取的坏死细胞是检测免疫原性细胞死亡模型的初步步骤(Obeid等人,2007)。有效摄取将允许吞噬细胞将抗原交叉呈递到白细胞,从而产生针对死的靶细胞的免疫反应。在该协议中,我们使用CellTracker TM sup TM染料。这种类型的染料在某些浓度下可能是有毒的,其可以根据使用的细胞类型而变化。因此,我们建议用户首先为使用的靶细胞找到最佳的染料浓度。最佳地,CellTracker TM 染料本身不应该诱导任何细胞死亡,而是应当标记靶细胞,使得它们容易与CD11c阳性BMDC分离。

In vivo OVA-specific Cytotoxic CD8+ T Cell Killing Assay
Author:
Date:
2016-06-20
[Abstract]  Cytotoxic CD8+ T cells are responsible for the lysis of cells expressing peptides associated with MHC class I molecules and derived from infection with a pathogen or from mutated antigens. In order to quantify in vivo this antigen-specific CD8+ T cell killing activity, we use the in vivo killing assay (IVK). Here we describe the protocol for the lysis of cells expressing a CD8+ T cell epitope of the OVA protein (SIINFEKL). Mice are previously immunized with the OVA protein and 7 days after immunization, they receive a mix of target cells, prepared from naive C57BL/6 spleen cells pulsed with the SIINFEKL peptide and labeled with high level of CFSE and of non-pulsed control cells labeled with low level of CFSE. One day later, the spleen ... [摘要]  细胞毒性CD8 + T细胞负责裂解表达与MHC I类分子相关并且源自病原体感染或突变抗原的肽的细胞。为了在体内定量该抗原特异性CD8 + T细胞杀伤活性,我们使用体内杀伤试验(IVK)。在这里,我们描述了用于裂解表达OVA蛋白(SIINFEKL)的CD8 + T细胞表位的细胞的方案。小鼠先前用OVA蛋白免疫,并且在免疫后7天,它们接受从用SIINFEKL肽脉冲并用高水平的CFSE标记的天然C57BL/6脾细胞制备的靶细胞和标记的非脉冲对照细胞的混合物具有低水平的CFSE。一天后,分离受体小鼠的脾细胞并通过FACS分析以测量CFSE高度细胞和CFSE低度细胞的量。通过在免疫的和未免疫的小鼠中CFSE高与低之间的差计算裂解的百分比。
 测量抗原特异性CD8 + T细胞在体内裂解其抗原的能力对评价诱导针对病原体或肿瘤抗原的适应性细胞毒性应答是非常重要的。

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