Regulation of voltage gated calcium channels by GPCRs and post-translational modification
Junting Huang1, Gerald W Zamponi1
1Department of Physiology and Pharmacology, Alberta Children's Hospital Research Institute and Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Abstract:
Calcium entry via voltage gated calcium channels mediates a wide range of physiological functions, whereas calcium channel dysregulation has been associated with numerous pathophysiological conditions. There are myriad cell signaling pathways that act on voltage gated calcium channels to fine tune their activities and to regulate their cell surface expression. These regulatory mechanisms include the activation of G protein-coupled receptors and downstream phosphorylation events, and their control over calcium channel trafficking through direct physical interactions. Calcium channels also undergo post-translational modifications that alter both function and density of the channels in the plasma membrane. Here we focus on select aspects of these regulatory mechanisms and highlight recent developments.
Insights
Voltage-gated calcium channels regulate physiological functions, but their dysregulation links to diseases. This review highlights key regulatory mechanisms, including signaling pathways and post-translational modifications, impacting channel activity and cell surface expression.
Area of Science:
- Molecular Biology
- Cell Physiology
- Neuroscience
Background:
- Voltage-gated calcium channels (VGCCs) are crucial for numerous physiological processes.
- Dysregulation of VGCCs is implicated in various pathophysiological conditions.
- Cell signaling pathways and post-translational modifications extensively regulate VGCC activity and localization.
Purpose of the Study:
- To review select regulatory mechanisms of VGCCs.
- To highlight recent developments in understanding VGCC regulation.
- To focus on signaling pathways and post-translational modifications affecting VGCCs.
Main Methods:
- Literature review of existing research on VGCC regulation.
- Focus on G protein-coupled receptor signaling and phosphorylation events.
- Analysis of post-translational modifications impacting VGCCs.
Main Results:
- VGCCs are finely tuned by diverse cell signaling pathways.
- G protein-coupled receptors and phosphorylation events control VGCC trafficking.
- Post-translational modifications significantly alter VGCC function and plasma membrane density.
Conclusions:
- Complex regulatory networks govern VGCC activity and surface expression.
- Understanding these mechanisms is vital for addressing VGCC-related diseases.
- Recent advancements offer new insights into VGCC regulation.
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