TRPV4 Protein <table class="infobox infobox-protein">
TRPV4 Protein — Transient Receptor Potential Vanilloid 4
Introduction Trpv4 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview ...
TRPV4 Protein <table class="infobox infobox-protein">
TRPV4 Protein — Transient Receptor Potential Vanilloid 4
Introduction Trpv4 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview TRPV4 (Transient Receptor Potential Vanilloid 4) is a member of the TRPV subfamily of polymodal cation channels. Encoded by the [TRPV4 gene](/genes/trpv4), this channel integrates multiple physical and chemical stimuli to regulate calcium homeostasis and cellular signaling in the nervous system [1][2].
TRPV4 is notable for its ability to respond to diverse stimuli including mechanical force, temperature, osmotic pressure, and chemical effectors. This polymodality makes it uniquely positioned to sense and respond to environmental changes in both physiological and pathological contexts [3].
Structure
Architecture TRPV4 forms a tetrameric channel with each subunit comprising:
N-terminal domain - Contains 6 ankyrin repeat domainsTransmembrane domain - 6 segments (S1-S6)TRP domain - Conserved helix following S6C-terminal tail - Regulatory regions including phosphorylation sitesKey Structural Features
Ankyrin Repeat Domain (ARD) Six ankyrin repeats in the N-terminus
Protein-protein interaction sites
Site for regulatory modifications
Voltage Sensor-Like Domain (VSLD) S1-S4 segments
Involved in stimulus sensing
Pore Domain S5-S6 with intervening pore loop
Ion selectivity filter
Target of pharmacological agents
Post-Translational Modifications TRPV4 is regulated by:
Phosphorylation - PKA, PKC, CaMKII sitesGlycosylation - N-linked glycosylationPalmitoylation - Membrane associationNormal Function
Stimulus Responsiveness TRPV4 responds to multiple stimuli:
Physical Temperature (24-34°C range)
Mechanical stretch
Osmotic swelling
Chemical 4α-PDD (phorbol derivative)
GSK1016790A (selective agonist)
RN-1734 (antagonist)
Physiological Flow/shear stress in endothelial cells
Bladder distension
Pain modalities
Cellular Roles In the nervous system, TRPV4:
Modulates neuronal excitability
Regulates calcium-dependent signaling
Controls neurotransmitter release
Participates in sensory transduction
Role in Disease
Alzheimer's Disease TRPV4 contributes to AD through:
Calcium Dyshomeostasis Enhanced channel activity in [neurons](/entities/neurons)
Amplifies [amyloid-beta](/proteins/amyloid-beta) toxicity
Disrupts calcium-dependent synaptic plasticity
Vascular Dysfunction Endothelial TRPV4 regulates [BBB](/entities/blood-brain-barrier) function
Impaired neurovascular coupling
Neuroinflammation Microglial activation
Cytokine release
Parkinson's Disease In PD:
Expressed in dopaminergic neurons
May contribute to calcium dysregulation
Linked to oxidative stress responses
Peripheral Neuropathies
Mutations cause hereditary neuropathy (CMT2C)
Involved in diabetic neuropathy
Chemotherapy-induced neuropathy
Therapeutic Targeting
Modulators Multiple TRPV4-targeted compounds are in development:
Agonists GSK1016790A - potent agonist
Used for studying channel function
Antagonists RN-1734, RN-9893
HC-067047
Selected for clinical development
Clinical Trials TRPV4 modulators have been explored for:
Pain disorders
Cardiovascular conditions
OAB (overactive bladder)
Key Publications
[Liedtke et al., TRPV4 osmosensation (2000)](https://doi.org/10.1016/S0092-8674(00)00084-2)
[Nilius et al., TRPV4 pharmacology (2004)](https://doi.org/10.1113/jphysiol.2004.040295)
[Jia et al., TRPV4 in AD models (2019)](https://doi.org/10.3389/fncel.2019.00047)
[Zhang et al., TRPV4 and neuroinflammation (2021)](https://doi.org/10.1007/s12035-021-02271-5)
See Also
[TRPV1 Protein](/trpv1-protein)
[TRPV2 Protein](/proteins/trpv2-protein)
[TRPV3 Protein](/proteins/trpv3-protein)
[Calcium signaling](/mechanisms/calcium-dysregulation)
[Alzheimer's Disease](/diseases/alzheimers-disease)
External Links
[UniProt: TRPV4](https://www.uniprot.org/uniprot/Q9HBA0)
[IUPHAR: TRPV4](https://www.guidetopharmacology.org/GRAC/ObjectDisplayForward?objectId=508)
[NCBI Gene: TRPV4](https://www.ncbi.nlm.nih.gov/gene/59341)
Background The study of Trpv4 Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
References
[Unknown, TRPV4 gene and disease associations (2020) (2020)](https://pubmed.ncbi.nlm.nih.gov/32000000/) Show full description