Related Experiment Video
Updated: May 2, 2026
Evaluation of Caspase Activation to Assess Innate Immune Cell Death
Published on: January 20, 2023
Caspase protocols in mice
Varsha Kaushal1, Christian Herzog, Randy S Haun
1Biology Department, Hendrix College, Conway, AR, USA.
Abstract:
Members of the caspase family of proteases are evolutionarily conserved cysteine proteases that play a crucial role as the central executioners of the apoptotic pathway. Since the discovery of caspases, many methods have been developed to detect their activation and are widely used in basic and clinical studies. In a mouse tissue, caspase activation can be monitored by cleavage of caspase-specific synthetic substrates and by detecting cleaved caspase by western blot analysis of the tissue extract. In tissue sections, active caspase can be detected by immunostaining using specific antibodies to the active caspase. In addition, among the myriads of caspase-specific substrates known so far, cleaved fragments produced by caspases from the substrates such as PARP, lamin A, and cytokeratin-18 can be monitored in tissue sections by immunostaining as well as western blots of tissue extracts. In general, more than one method should be used to ascertain detection of activation of caspases in a mouse tissue.
Insights
Detecting caspase activation in mouse tissues involves multiple methods. Researchers use substrate cleavage, western blots, and immunostaining to confirm caspase activity in basic and clinical studies.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Caspases are critical cysteine proteases executing apoptosis.
- Numerous methods exist to detect caspase activation in biological samples.
- Caspase activity is vital in both fundamental research and clinical applications.
Purpose of the Study:
- To review and summarize methods for detecting caspase activation in mouse tissues.
- To highlight the importance of using multiple techniques for reliable caspase detection.
Main Methods:
- Monitoring caspase activation via cleavage of specific synthetic substrates.
- Western blot analysis to detect cleaved caspases in tissue extracts.
- Immunostaining of tissue sections using antibodies against active caspases.
- Detecting cleaved fragments of known caspase substrates (PARP, lamin A, cytokeratin-18) via western blot and immunostaining.
Main Results:
- Caspase activation can be reliably assessed through various biochemical and histological techniques.
- Western blotting and immunostaining are effective for detecting cleaved caspases and their substrates.
- Multiple methods provide complementary data for accurate caspase activity assessment.
Conclusions:
- Confirming caspase activation in mouse tissues requires employing more than one detection method.
- A combination of techniques ensures robust and accurate identification of apoptotic pathway execution.
