Related Experiment Video
Updated: May 6, 2026
06:52
Detection of Inflammasome Activation and Pyroptotic Cell Death in Murine Bone Marrow-derived Macrophages
Published on: May 21, 2018
10.2K
Time-lapse image analysis reveals trigger-dependent differences in ASC speck lifetime in the NLRP3 inflammasome
M Herring1,2,3, A Persson4,5, R Karlsson6,7,8
1School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden. matthew.herring@oru.se.
Scientific Reports
|May 4, 2026
Summary
The NLRP3 inflammasome response is not "all or nothing." Live-cell imaging reveals trigger-dependent differences in ASC-GFP speck lifetime, offering new insights into inflammasome dynamics.
Area of Science:
- Immunology
- Cell Biology
Background:
- The NLRP3 inflammasome, upon activation, triggers pyroptosis and releases IL-1β and IL-18.
- Previously, inflammasome responses were considered uniform (
Purpose of the Study:
- To investigate dynamic, single-cell responses of the NLRP3 inflammasome.
- To challenge the
- Main_Methods
Main Methods:
- Live-cell imaging to track individual ASC-GFP specks over time.
- An algorithmic approach to analyze speck dynamics.
- Utilized triggers: ATP, monosodium urate, and nigericin.
Main Results:
- Observed trigger-dependent differences in ASC-GFP speck lifetimes.
- Demonstrated variability in inflammasome response dynamics at the single-cell level.
Conclusions:
- NLRP3 inflammasome activation exhibits dynamic, trigger-specific behaviors.
- Single-cell analysis provides deeper insights than population-level endpoint measurements.
