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Dispase II

Dispase II (neutral protease, grade II)

Company: Roche Diagnostics
Catalog#: 04942078001
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Isolation of Murine Alveolar Type II Epithelial Cells
Author:
Date:
2017-05-20
[Abstract]  We have optimized a protocol for isolation of alveolar type II epithelial cells from mouse lung. Lung cell suspensions are prepared by intratracheal instillation of dispase and agarose followed by mechanical disaggregation of the lungs. Alveolar type II epithelial cells are purified from these lung cell suspensions through magnetic-based negative selection using a Biotin-antibody, Streptavidin-MicroBeads system. The purified alveolar type II epithelial cells can be cultured and maintained on fibronectin-coated plates in DMEM with 10% FBS. This protocol enables specific investigation of alveolar type II epithelial cells at molecular and cellular levels and provides an important tool to investigate in vitro the mechanisms underlying lung pathogenesis. [摘要]  我们优化了从小鼠肺分离肺泡II型上皮细胞的方案。通过气管内滴注分泌酶和琼脂糖,然后机械解聚肺来制备肺细胞悬浮液。通过使用生物素抗体Streptavidin-MicroBeads系统的磁性阴性选择,从这些肺细胞悬液中纯化肺泡II型上皮细胞。可以将纯化的肺泡II型上皮细胞培养并维持在含有10%FBS的DMEM中的纤连蛋白包被的平板上。该方案能够在分子和细胞水平上对肺泡II型上皮细胞进行特异性研究,并提供了一种重要的工具,用于在体外研究肺发病机制的机制。

背景 肺泡II型上皮细胞在肺泡完整性维持,表面活性蛋白合成和分泌中起关键作用,并防止细菌和病毒的肺部感染。最近使用小鼠肺癌模型的研究已经证明,肺泡II型上皮细胞是由化学致癌物质和致癌突变诱导的腺瘤/腺癌的关键细胞(Qu 等人,2015; Zhou > et al。,2015和2017)。为了进一步扩大我们对肺泡II型上皮细胞在体内肺发病机制中的作用的理解,需要分离肺泡II型上皮细胞以允许体外精确的机理分析, EM>。基于先前的研究(Corti等人,1996; Rice等人,2002),在我们的实验室中使用了一种修饰的方法来分离高度纯化的,可行的和可培养的来自小鼠的肺泡II型上皮细胞(Zhou等人,2015; Sun等人,2016)。

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)。

Mouse Corneal Stroma Fibroblast Primary Cell Culture
Author:
Date:
2016-10-05
[Abstract]  This protocol is developed for primary cell culture of cornea stromal keratocytes isolated from neonatal mouse eyeballs. It provides an optimal condition to isolate stromal keratocytes which maintain high viability for cell culture. [摘要]  该协议是为从新生小鼠眼球分离的角膜基质角膜细胞的原代细胞培养而开发的。 它提供了一个最佳条件,以隔离基质角膜细胞,保持细胞培养的高生存力。

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