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Cell Biology

Detecting Apoptosis with TUNEL Staining

Description

TUNEL staining helps detect apoptotic cells by marking fragmented DNA. Apoptosis is a form of programmed cell death, and one of its key signs is nuclear DNA fragmentation by nucleases. These enzymes are activated by caspases, the proteins that carry out the cell death program.

The assay uses term...

Transcript

TUNEL 检测法最常用于检测正在经历凋亡的细胞,凋亡是一种程序性细胞死亡形式。凋亡是在发育过程中以及维持组织稳态中重要的生物学过程。TUNEL 染色可实现对凋亡细胞的可视化和定量分析。这有助于科学家评估新疗法在凋亡受到抑制(如癌症)或增强(如神经退行性疾病)的疾病中的有效性。

本视频将解释如何使用 TUNEL 检测法标记正在发生凋亡的细胞,详细演示在组织切片中执行该方法的逐步操作流程,并介绍研究人员如何应用此技术来理解细胞死亡的机制。

在深入探讨TUNEL检测的操作步骤之前,我们先来讨论该技术背后的原理。

细胞凋亡的众多典型特征之一是DNA片段化。DNA片段化是...

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