ReviewFrontiers in physiology2021
Ion Transport Regulation by TRPV4 and TRPV1 in Lens and Ciliary Epithelium.
Review in Frontiers in physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 13 citations in OpenAlex.
- A Systems View of Posterior Capsule Opacification: TGF-β/ROS Signaling, Mitochondrial Homeostasis, and Injury/Aging Cues-Therapeutic Opportunities.Investigative ophthalmology & visual science · 2026Review
- Extrinsic Modulation of the Zonular Tension Induces Calcium Influx in Lens Fiber Cells That Is Mediated by Mechanosensitive TRPV1 and TRPV4 Channels.Investigative ophthalmology & visual science · 2026Article
- Nephrotoxicity of Evodiamine in Mice: Mechanistic Insights from Integrated Network Toxicology and Transcriptomic Profiling.International journal of molecular sciences · 2026Article
- Lens Biomechanics and Mechanotransduction Signaling: Dual Pillars of Age-Related Cataract Pathogenesis.Investigative ophthalmology & visual science · 2026Review
- Lens aging and disease: Molecular mechanisms, functional consequences, and pharmacological implications.Progress in retinal and eye research · 2026Review
- Regional Differences in Calcium Dynamics in the Intact Lens: The Role of TRPV Channels in Lens Calcium Regulation.Investigative ophthalmology & visual science · 2025Article
- Studies on Hydrostatic Pressure Responses to Piezo1 and TRPV4 in the Mouse Lens.Investigative ophthalmology & visual science · 2025Article
- Patterns and Processes of Genomic Evolution Inferred From the Ten Smallest Vertebrate Genomes.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- TRPV4 controls circadian and pathological ocular hypertension.The Journal of physiology · 2025Article
- TRPV4 subserves physiological and pathological elevations in intraocular pressure.Research square · 2024Article
- Regulation of Aqueous Humor Secretion by Melatonin in Porcine Ciliary Epithelium.International journal of molecular sciences · 2023Article
- Mechanical Stretch Activates TRPV4 and Hemichannel Responses in the Nonpigmented Ciliary Epithelium.International journal of molecular sciences · 2023Article
- Patch clamp studies on TRPV4-dependent hemichannel activation in lens epithelium.Frontiers in pharmacology · 2023Article
- Nitro Dihydrocapsaicin, a Non-Pungent Capsaicin Analogue, Inhibits Cellular Senescence of Lens Epithelial Cells via Upregulation of SIRT1.International journal of molecular sciences · 2022Article
- Activation of Piezo1 Increases Na,K-ATPase-Mediated Ion Transport in Mouse Lens.International journal of molecular sciences · 2022Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
Aside from a monolayer of epithelium at the anterior surface, the lens is formed by tightly compressed multilayers of fiber cells, most of which are highly differentiated and have a limited capacity for ion transport. Only the anterior monolayer of epithelial cells has high Na, K-ATPase activity. Because the cells are extensively coupled, the lens resembles a syncytium and sodium-potassium homeostasis of the entire structure is largely dependent on ion transport by the epithelium. Here we describe recent studies that suggest TRPV4 and TRPV1 ion channels activate signaling pathways that play an important role in matching epithelial ion transport activity with needs of the lens cell mass. A TRPV4 feedback loop senses swelling in the fiber mass and increases Na, K-ATPase activity to compensate. TRPV4 channel activation in the epithelium triggers opening of connexin hemichannels, allowing the release of ATP that stimulates purinergic receptors in the epithelium and results in the activation of Src family tyrosine kinases (SFKs) and SFK-dependent increase of Na, K-ATPase activity. A separate TRPV1 feedback loop senses shrinkage in the fiber mass and increases NKCC1 activity to compensate. TRPV1 activation causes calcium-dependent activation of a signaling cascade in the lens epithelium that involves PI3 kinase, ERK, Akt and WNK. TRPV4 and TRPV1 channels are also evident in the ciliary body where Na, K-ATPase is localized on one side of a bilayer in which two different cell types, non-pigmented and pigmented ciliary epithelium, function in a coordinated manner to secrete aqueous humor. TRPV4 and TRPV1 may have a role in maintenance of cell volume homeostasis as ions and water move through the bilayer.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.