Related Experiment Video
Updated: Nov 13, 2025
08:54
Monitoring Leucine-Rich Repeat Containing 8 Channel (LRRC8/VRAC) Activity Using Sensitized-Emission Förster Resonance Energy Transfer (SE-FRET)
Published on: August 9, 2024
646
LRRC8/VRAC Channels and the Redox Balance: A Complex Relationship
Jonas Friard1,2,3, Audrey Laurain3, Isabelle Rubera3
1Department of Physiology, McGill University, Montreal, QC, Canada.
Summary
Volume Regulated Anion Channels (VRACs), now known to be LRRC8 heteromers, are complex. Their subunit composition influences function and interaction with cellular redox systems, impacting oxidative stress signaling.
Area of Science:
- Cellular Physiology
- Ion Channel Biology
- Molecular Biology
Background:
- Volume Regulated Anion Channels (VRACs) are crucial for cell volume regulation.
- Their molecular identity was confirmed as LRRC8 heteromers in 2014.
- LRRC8/VRACs exhibit complex properties influenced by subunit composition.
Purpose of the Study:
- To systematically review literature on LRRC8/VRACs and their redox system interplay.
- To provide new insights into the complex relationship between VRACs and redox balance.
- To highlight the importance of this relationship in oxidative stress signaling.
Main Methods:
- Systematic literature identification (pre- and post-LRRC8 discovery).
- Analysis of studies detailing VRAC biophysical properties and subunit composition.
- Review of research on VRAC interactions with cellular redox systems.
Main Results:
- VRACs are formed by LRRC8 heteromers with diverse properties.
- LRRC8/VRACs are directly regulated by redox conditions.
- VRACs influence cellular redox balance via glutathione permeability and other pathways.
Conclusions:
- The complexity of LRRC8/VRACs is increased by their subunit-dependent properties.
- The interplay between LRRC8/VRACs and redox systems is critical for cellular function.
- Further research is needed to fully understand these interactions in physiological processes.
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