ArticlePflugers Archiv : European journal of physiology2016
Intracellular spermine blocks TRPC4 channel via electrostatic interaction with C-terminal negative amino acids.
Article in Pflugers Archiv : European journal of physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
11 citing papers in PubMed, 10 citations in OpenAlex.
- Open-channel block of human TRPV6 by polyamine spermine.Nature communications · 2026Article
- Molecular basis of TRPV3 channel blockade by intracellular polyamines.Communications biology · 2025Article
- Intracellular Spermine Is a Key Player in GSG1L's Regulation of Calcium-Permeable AMPAR Channel Conductance and Recovery from Desensitization.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- The role of polyamine metabolism in cellular function and physiology.American journal of physiology. Cell physiology · 2024Review
- Direct modulation of TRPC ion channels by Gα proteins.Frontiers in physiology · 2024Review
- Blockade of TRPV channels by intracellular spermine.The Journal of general physiology · 2023Article
- Polyamines: Functions, Metabolism, and Role in Human Disease Management.Medical sciences (Basel, Switzerland) · 2021Review
- Analysis of interaction between intracellular spermine and transient receptor potential canonical 4 channel: multiple candidate sites of negatively charged amino acids for the inward rectification of transient receptor potential canonical 4.The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2020Article
- Review
- Permeation and Rectification in Canonical Transient Receptor Potential-6 (TRPC6) Channels.Frontiers in physiology · 2018Review
- Functions of Polyamines in Mammals.The Journal of biological chemistry · 2016Review
Corrections and comments
- Erratum issued
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Transient receptor potential canonical (TRPC) 4 channels are calcium-permeable, nonselective cation channels and are widely expressed in mammalian tissue, especially in the GI tract and brain. TRPC4 channels are known to be involved in neurogenic contraction of ileal smooth muscle cells via generating cationic current after muscarinic stimulation (muscarinic cationic current (mIcat)). Polyamines exist in numerous tissues and are believed to be involved in cell proliferation, differentiation, scar formation, wound healing, and carcinogenesis. Besides, physiological polyamines are essential to maintain inward rectification of cardiac potassium channels (Kir2.1). At membrane potentials more positive than equilibrium potential, intracellular polyamines plug the cytosolic surface of the Kir2.1 so that potassium ions cannot pass through the pore. Recently, it was reported that polyamines inhibit not only cardiac potassium channels but also nonselective cation channels that mediate the generation of mIcat. Here, we report that TRPC4, a definite mIcat mediator, is inhibited by intracellular spermine with great extent. The inhibition was specific to TRPC4 and TRPC5 channels but was not effective to TRPC1/4, TRPC1/5, and TRPC3 channels. For this inhibition to occur, we found that glutamates at 728th and 729th position of TRPC4 channels are essential whereby we conclude that spermine blocks the TRPC4 channel with electrostatic interaction between negative amino acids at the C-terminus of the channel.
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