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Phosphate buffered saline (PBS)

Company: Thermo Fisher
Catalog#: 10010023
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Probe-Seq: Method for RNA Sequencing of Specific Cell Types from Animal Tissue
Author:
Date:
2020-09-20
[Abstract]  Most organs and tissues are composed of many types of cells. To characterize cellular state, various transcription profiling approaches are currently available, including whole-tissue bulk RNA sequencing, single cell RNA sequencing (scRNA-Seq), and cell type-specific RNA sequencing. What is missing in this repertoire is a simple, versatile method for bulk transcriptional profiling of cell types for which cell type-specific genetic markers or antibodies are not readily available. We therefore developed Probe-Seq, which uses hybridization of gene-specific probes to RNA markers for isolation of specific types of cells, to enable downstream FACS isolation and bulk RNA sequencing. We show that this method can enable isolation and profiling of specific cell types from mouse retina, frozen human ... [摘要]  [摘要 ] 大多数器官和组织由许多类型的细胞组成。为了表征细胞状态,目前可以使用各种转录分析方法,包括全组织体RNA测序,单细胞RNA测序(scRNA -Seq)和特定于细胞类型的RNA测序。在此库中缺少的是一种简单,通用的方法,无法批量获得细胞类型的特定基因标记或抗体,因此无法批量转录。因此,我们开发了Probe-Seq,该探针使用基因特异性探针与RNA标记的杂交来分离特定类型的细胞,以实现下游FACS分离和大量RNA测序。我们表明,该方法可以实现从小鼠视网膜,冷冻人视网膜,果蝇中肠和发育中的雏鸡视网膜中分离和分析特定细胞类型的特征,这表明它对大多数生物很有用。

[背景技术 [ 0002 ] 在过去的二十年中,使用RNA-Seq和微阵列进行转录谱分析已在生物学研究中无处不在。分析现在是用来了解大多数生物体中细胞和细胞状态的主要工具之一。它被用于正常发育,异常发育和疾病的研究,并极大地扩展了我们对进化关系的理解。特别地,scRNA- Seq已经以前所未有的速度导致了新型细胞类型的鉴定(Picelli 等,2013;Jaitin 等,2014; Klein 等,2015; Macosko 等,2015)。为了更深入地了解这些新描述的细胞类型,一种无需转基因标记或特异性抗原即可将其分离的方法将大有裨益。尽管可以使用scRNA ...

Immunofluorescent Staining of Claudin-2 in Cultured Kidney Tubular Cells
Author:
Date:
2020-07-20
[Abstract]  Members of the claudin family of tight junction proteins regulate paracellular permeability and modulate cell signaling. During junction remodeling, these proteins are selectively inserted into or retrieved from the tight junctions, but the control and coordination of these processes remain incompletely understood. Visualization of claudins allows the assessment of changes in their localization and abundance. We use the described protocol to stain claudin-2, but it can also be adapted to stain any tight junction protein. We found that using methanol for fixing allows the best preservation of claudin-2 both at the membrane and in cytoplasmic vesicles. Staining is done using a claudin-2 specific primary and a fluorescently labelled secondary antibody, along with DAPI to label nuclei. The ... [摘要]  [摘要 t] 紧密连接蛋白claudin家族的成员调节细胞旁通透性并调节细胞信号传导。在连接重塑过程中,这些蛋白被选择性地插入紧密连接或从紧密连接中检索出来,但是对这些过程的控制和协调仍不完全了解。claudins的可视化可以评估其定位和丰度的变化。我们使用所描述的方案对claudin-2染色,但它也可以用于染色任何紧密连接蛋白。我们发现使用甲醇进行固定可以使claudin-2在膜和细胞质囊泡中得到最佳保存。使用claudin-2特异性一抗和荧光标记的二抗以及与DAPI标记核一起进行染色。然后使用共聚焦显微镜对样品成像,并获得z堆栈,从而可以可视化连接和细胞内claudin-2。总的claudin-2信号可以在3D重建图像后使用Imaris 软件。

[背景 ] 紧密连接(TJ)是一种多蛋白复合物,位于连接上皮细胞的细胞间连接复合物的最顶端(Van Itallie和Anderson,2014)。这些结构产生通透性屏障和离子特异性旁细胞途径,维持apicobasal 极性,为各种重要功能提供输入并调节信号传导途径。位于TJs的蛋白可分为跨膜蛋白和相关的胞质蛋白(综述见(González-Mariscal ...

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