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Cannabidiol Enhances Stress-Induced Cellular Damage: Potential Contribution of Kv2.1 Inhibition.
Fatemeh Sayehmiri1,2, Mohsen Ilkhanizadeh-Qomi3, Nima Naderi4,5
1Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Journal of Molecular Neuroscience : MN
|August 14, 2025
Summary
Cannabidiol (CBD) inhibits Kv2.1 channels, increasing cell vulnerability to stress. Kv2.1 channels may offer protection against metabolic stress, suggesting therapeutic potential in conditions like tumor microenvironments.
Area of Science:
- Neuroscience
- Molecular Biology
- Pharmacology
Background:
- Kv2.1 channels are crucial for cellular functions like proliferation and apoptosis.
- Cannabidiol (CBD) is known to affect ion channels, but its impact on Kv2.1 is not well understood.
Purpose of the Study:
- To investigate CBD's effects on Kv2.1 channel activity.
- To determine CBD's influence on cell viability under normal and stress conditions.
- To explore Kv2.1 channel's role in cellular stress response.
Main Methods:
- Stable Kv2.1 expression in HEK293 cells using the Sleeping Beauty transposon system.
- Cell viability assessed via MTT assays under standard and nutrient-deprived conditions.
- Electrophysiological analysis to determine CBD's mechanism of action on Kv2.1 channels.
Main Results:
- CBD inhibited Kv2.1 channel activity, primarily by enhancing inactivation.
- CBD treatment decreased cell viability under nutrient deprivation, especially at higher concentrations.
- Kv2.1-expressing cells demonstrated enhanced viability during nutrient deprivation.
Conclusions:
- CBD's inhibition of Kv2.1 channels increases cellular susceptibility to stress.
- Kv2.1 channels may play a protective role during metabolic stress.
- Kv2.1 channels represent a potential therapeutic target for diseases involving cellular stress, such as tumors.
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