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Biochemical Methods for Assessing Gasdermin D Inactivation in Macrophages
1Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA. fiachra.humphries@umassmed.edu.
Methods in Molecular Biology (Clifton, N.J.)
|April 19, 2023
Summary
Gasdermin D (GSDMD) triggers pyroptosis by forming pores that release inflammatory cytokines. This study details biochemical methods to analyze GSDMD activation, processing, and inhibition.
Area of Science:
- Cellular Biology
- Immunology
- Biochemistry
Background:
- Gasdermin D (GSDMD) is a key executioner protein in pyroptosis, a highly inflammatory form of programmed cell death.
- Inactive GSDMD resides in the cytosol and becomes activated upon inflammasome signaling.
- Activated GSDMD oligomerizes to form membrane pores, facilitating the release of mature IL-1 and IL-18 cytokines.
Purpose of the Study:
- To establish robust biochemical methods for evaluating Gasdermin D activation states.
- To characterize GSDMD processing and oligomerization during pyroptosis.
- To assess the efficacy of small molecule inhibitors in GSDMD inactivation.
Main Methods:
- Biochemical assays to detect GSDMD processing.
- Analysis of GSDMD oligomerization status.
- In vitro assays using small molecule inhibitors to block GSDMD activity.
Main Results:
- The study provides detailed protocols for measuring GSDMD cleavage and oligomerization.
- Demonstrated the utility of these methods in assessing GSDMD function.
- Showcased the application of these assays for evaluating GSDMD inhibitors.
Conclusions:
- Established biochemical techniques are crucial for understanding Gasdermin D's role in pyroptosis.
- These methods enable the functional assessment of GSDMD and the discovery of therapeutic inhibitors.
- This work supports research into pyroptosis-related inflammatory diseases.
