ArticleThe Journal of physiology2002
Characterization of basolateral K+ channels underlying anion secretion in the human airway cell line Calu-3.
Article in The Journal of physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
41 citing papers in PubMed, 93 citations in OpenAlex.
- Cancer-associated loss-of-function mutations in KCNQ1 enhance Wnt/β-catenin signalling disrupting epithelial homeostasis.Oncogene · 2025Article
- Convergent gene losses and pseudogenizations in multiple lineages of stomachless fishes.Communications biology · 2024Article
- Reduction of TRPC1/TRPC3 mediated CaCellular signalling · 2023Article
- Hormonal regulation of non-cystic fibrosis transmembrane conductance regulator ion channels in the endocervix.F&S science · 2023Article
- A Novel Role of Arrhythmia-Related GeneInternational journal of molecular sciences · 2022Article
- Impact of KvLQT1 potassium channel modulation on alveolar fluid homeostasis in an animal model of thiourea-induced lung edema.Frontiers in physiology · 2022Article
- Bitter taste receptor agonists regulate epithelial two-pore potassium channels via cAMP signaling.Respiratory research · 2021Article
- The ubiquitous flavonoid quercetin is an atypical KCNQ potassium channel activator.Communications biology · 2020Article
- Kv7 Channels in Lung Diseases.Frontiers in physiology · 2020Review
- Cyclic AMP-Dependent Regulation of Kv7 Voltage-Gated Potassium Channels.Frontiers in physiology · 2020Review
- The KCNE2 potassium channel β subunit is required for normal lung function and resilience to ischemia and reperfusion injury.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2019Article
- Protective and antifungal properties of Nanodisk-Amphotericin B over commercially available Amphotericin B.World journal of otorhinolaryngology - head and neck surgery · 2017Article
- Complementary roles of KCa3.1 channels and β1-integrin during alveolar epithelial repair.Respiratory research · 2015Article
- Hydrogen peroxide stimulation of CFTR reveals an Epac-mediated, soluble AC-dependent cAMP amplification pathway common to GPCR signalling.British journal of pharmacology · 2015Article
- Evidence of K+ channel function in epithelial cell migration, proliferation, and repair.American journal of physiology. Cell physiology · 2014Review
- Article
- H2O2 stimulates cystic fibrosis transmembrane conductance regulator through an autocrine prostaglandin pathway, using multidrug-resistant protein-4.American journal of respiratory cell and molecular biology · 2013Article
- Pseudohalide anions reveal a novel extracellular site for potentiators to increase CFTR function.British journal of pharmacology · 2012Article
- Emerging genetics of COPD.EMBO molecular medicine · 2012Review
- Luminal cholinergic signalling in airway lining fluid: a novel mechanism for activating chloride secretion via Ca²⁺-dependent Cl⁻ and K⁺ channels.British journal of pharmacology · 2012Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Transepithelial anion secretion in many tissues depends upon the activity of basolateral channels. Using monolayers of the Calu-3 cell line, a human submucosal serous cell model mounted in an Ussing chamber apparatus, we investigated the nature of the K+ channels involved in basal, cAMP- and Ca2+-stimulated anion secretion, as reflected by the transepithelial short circuit current (I(sc)). The non-specific K+ channel inhibitor Ba2+ inhibited the basal I(sc) by either 77 or 16 % when applied directly to the basolateral or apical membranes, respectively, indicating that a basolateral K+ conductance is required for maintenance of basal anion secretion. Using the K+ channel blockers clofilium and clotrimazole, we found basal I(sc) to be sensitive to clofilium, with a small clotrimazole-sensitive component. By stimulating the cAMP and Ca2+ pathways, we determined that cAMP-stimulated anion secretion was almost entirely abolished by clofilium, but insensitive to clotrimazole. In contrast, the Ca2+-stimulated response was sensitive to both clofilium and clotrimazole. Thus, pharmacologically distinct basolateral K+ channels are differentially involved in the control of anion secretion under different conditions. Isolation of the basolateral K+ conductance in permeabilized monolayers revealed a small basal and forskolin-stimulated I(sc). Finally, using the reverse transcriptase-polymerase chain reaction, we found that Calu-3 cells express the K+ channel genes KCNN4 and KCNQ1 and the subunits KCNE2 and KCNE3. We conclude that while KCNN4 contributes to Ca2+-activated anion secretion by Calu-3 cells, basal and cAMP-activated secretion are more critically dependent on other K+ channel types, possibly involving one or more class of KCNQ1-containing channel complexes.
Indexed as
Identifiers
What OpenQuestion holds
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.