Transient Receptor Potential Channels in Microglia: Roles in Physiology and Disease
Santiago Echeverry1, María Juliana Rodriguez1, Yolima P Torres2
1Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 # 40-62, Bogotá, Colombia.
Abstract:
Microglia modulate the nervous system cellular environment and induce neuroprotective and neurotoxic effects. Various molecules are involved in these processes, including families of ion channels expressed in microglial cells, such as transient receptor potential (TRP) channels. TRP channels comprise a family of non-selective cation channels that can be activated by mechanical, thermal, and chemical stimuli, and which contribute to the regulation of intracellular calcium concentrations. TRP channels have been shown to be involved in cellular processes such as osmotic regulation, cytokine production, proliferation, activation, cell death, and oxidative stress responses. Given the significance of these processes in microglial activity, studies of TRP channels in microglia have focused on determining their roles in both neuroprotective and neurotoxic processes. TRP channel activity has been proposed to play an important function in neurodegenerative diseases, ischemia, inflammatory responses, and neuropathic pain. Modulation of TRP channel activity may thus be considered as a potential therapeutic strategy for the treatment of various diseases associated with alterations of the central nervous system (CNS). In this review, we describe the expression of different subfamilies of TRP channels in microglia, focusing on their physiological and pathophysiological roles, and consider their potential use as therapeutic targets in CNS diseases.
Insights
Transient Receptor Potential (TRP) channels in microglia influence neuroprotection and neurotoxicity. Targeting these ion channels offers potential therapeutic strategies for central nervous system (CNS) diseases.
Area of Science:
- Neuroscience
- Cell Biology
- Pharmacology
Background:
- Microglia are key immune cells in the central nervous system (CNS), modulating both neuroprotective and neurotoxic responses.
- Transient Receptor Potential (TRP) channels are ion channels in microglia that regulate intracellular calcium and are involved in critical cellular functions.
Purpose of the Study:
- To review the expression and roles of TRP channels in microglia.
- To explore the physiological and pathophysiological significance of microglial TRP channels.
- To assess the therapeutic potential of modulating TRP channels for CNS diseases.
Main Methods:
- Literature review of studies on TRP channels in microglia.
- Analysis of TRP channel expression patterns in microglial cells.
- Examination of the functional roles of TRP channels in microglial activity.
Main Results:
- TRP channels are expressed in microglia and contribute to processes like cytokine production, cell death, and oxidative stress.
- TRP channel activity is implicated in neurodegenerative diseases, ischemia, inflammation, and neuropathic pain.
- Specific TRP channel subfamilies play distinct roles in microglial function.
Conclusions:
- TRP channels are critical regulators of microglial function with dual neuroprotective and neurotoxic roles.
- Understanding microglial TRP channel activity is essential for developing novel therapeutic strategies for CNS disorders.
- Targeting TRP channels represents a promising avenue for treating various central nervous system diseases.
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