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Paraformaldehyde

多聚甲醛

Company: Sigma-Aldrich
Catalog#: 16005
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Lentiviral shRNA Screen to Identify Epithelial Integrity Regulating Genes in MCF10A 3D Culture
Author:
Date:
2016-12-05
[Abstract]  MCF10A 3D culture system provides a reductionist model of glandular mammary epithelium which is widely used to study development of glandular architecture, the role of cell polarity and epithelial integrity in control of epithelial cell functions, and mechanisms of breast cancer. Here we describe how to use shRNA screening approach to identify critical cell pathways that couple epithelial structure to individual cell based responses such as cell cycle exit and apoptosis. These studies will help to interrogate genetic changes critical for early breast tumorigenesis. The protocol describes a library of lentiviral shRNA constructs designed to target epithelial integrity and a highly efficient method for lentiviral transduction of suspension MCF10A cultures. Furthermore, protocols are ... [摘要]  MCF10A 3D文化系统提供了腺体乳腺上皮的还原剂模型,其广泛用于研究腺体结构的发育,细胞极性和上皮完整性在上皮细胞功能的控制中的作用以及乳腺癌的机制。在这里我们描述如何使用shRNA筛选方法来识别关键细胞通路,夫妇上皮结构到个别细胞的反应,如细胞周期退出和凋亡。这些研究将有助于询问对早期乳腺肿瘤发生至关重要的遗传变化。该协议描述了设计用于靶向上皮完整性的慢病毒shRNA构建体的文库和用于悬浮MCF10A培养物的慢病毒转导的高效方法。此外,提供的协议设置MCF10A 3D文化在Matrigel的形态和细胞反应研究通过结构化照明和共聚焦显微镜分析免疫染色的三维结构。
关键字: 3D文化,MCF10A,shRNA,上皮完整性,免疫荧光染色,3D成像,形态测量分析

[背景] 上皮细胞形成高度组织的组织结构,其提供物理支持和用于协调细胞信号传导的结构化支架。跨上皮结构的这种协调的信号传导对于上皮生物学是基本的;使得上皮细胞在调节器官大小,形状,功能和基于个体细胞的应答中的动态联合作用(Roignot等人,2013; Shamir和Ewald,2014)。上皮信号传导的联合指挥还提供了一种强有力的肿瘤抑制机制,通过将外部和内部有丝分裂信号门控到静止的上皮组织(Partanen等人,2013; Rejon等人 ...

Aorta Atherosclerosis Lesion Analysis in Hyperlipidemic Mice
Author:
Date:
2016-06-05
[Abstract]  Atherosclerosis is a chronic inflammatory disease of large and medium-sized arteries. Apolipoprotein E-deficient (ApoE-/-) mice are used as experimental models to study human atherosclerosis. ApoE-/- mice are constitutively hyperlipidemic and develop intima plaques that resemble human plaques. Various issues including experimental design for lesion analysis, dietary conditions, isolation of the aorta, staining methods, morphometry, group size, age, the location within the arterial tree, and statistical analyses are important parameters that need to be addressed to obtain robust data. Here, we provide detailed methods to quantify aorta atherosclerosis. [摘要]  动脉粥样硬化是大和中等大小动脉的慢性炎性疾病。 载脂蛋白E缺陷(ApoE -/-/- )小鼠用作实验模型来研究人动脉粥样硬化。 ApoE -/-/- 小鼠是组成性高脂血症并且发展类似于人噬斑的内膜斑块。 包括病变分析的实验设计,饮食条件,主动脉分离,染色方法,形态测定,组大小,年龄,动脉树内的位置和统计分析的各种问题是需要解决以获得鲁棒数据的重要参数。 在这里,我们提供详细的方法来量化主动脉粥样硬化。

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