ArticleBiomedicines2022
Klotho Modulates Pro-Fibrotic Activities in Human Atrial Fibroblasts through Inhibition of Phospholipase C Signaling and Suppression of Store-Operated Calcium Entry.
Article in Biomedicines, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 14 citations in OpenAlex.
- Therapeutic Lithium Enhances Klotho Expression and Mitochondrial Size and Branching in Human Cardiac Fibroblasts Involving Nuclear Factor-kappa B Inhibition.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2026Article
- Ultra short waves alleviate ulcerative colitis via TRPV2 mediated-macrophage polarization.iScience · 2026Article
- Mechanisms of Atrial Fibrillation in Heart Failure: Uncovering Therapeutic Targets in the Atrial Substrate.Current heart failure reports · 2026Review
- Pharmacological modulation of Ca²⁺ signaling by calycosin promotes glioblastoma cell death.Medical oncology (Northwood, London, England) · 2026Article
- Mechanisms underlying atrial fibrillation in chronic kidney disease.Journal of molecular and cellular cardiology · 2025Review
- Essential oil extract p‑cresol effect on CaBiomedical reports · 2025Article
- Klotho attenuates epithelial‑mesenchymal transition of retinal pigment epithelial cells in subretinal fibrosis by suppressing the ERK1/2 and Wnt/β‑catenin signaling pathways.International journal of molecular medicine · 2025Article
- Analysis of selected cytokines, NLRP3 inflammasome and α-Klotho protein in patients with heart failure after ICD/CRT-D high-voltage intervention.Frontiers in physiology · 2025Article
- Store-Operated CaContact (Thousand Oaks (Ventura County, Calif.))Review
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundAtrial fibroblasts activation causes atrial fibrosis, which is one major pathophysiological contributor to atrial fibrillation (AF) genesis. Klotho is a pleiotropic protein with remarkable cardiovascular effects, including anti-inflammatory, anti-oxidative, and anti-apoptotic effects. This study investigated whether Klotho can modulate the activity of human atrial fibroblasts and provides an anti-fibrotic effect.
methodsCell migration assay and proliferation assay were used to investigate fibrogenesis activities in single human atrial fibroblasts with or without treatment of Klotho (10 and 100 pM, 48 h). Calcium fluorescence imaging, the whole-cell patch-clamp, and Western blotting were performed in human atrial fibroblasts treated with and without Klotho (100 pM, 48 h) to evaluate the store-operated calcium entry (SOCE), transient receptor potential (TRP) currents, and downstream signaling.
resultsHigh dose of Klotho (100 pM, 48 h) significantly reduced the migration of human atrial fibroblasts without alternating their proliferation; in addition, treatment of Klotho (100 pM, 48 h) also decreased SOCE and TRP currents. In the presence of BI-749327 (a selective canonical TRP 6 channel inhibitor, 1 μM, 48 h), Klotho (100 pM, 48 h) could not inhibit fibroblast migration nor suppress the TRP currents. Klotho-treated fibroblasts (100 pM, 48 h) had lower phosphorylated phospholipase C (PLC) (p-PLCβ3 Ser537) expression than the control. The PLC inhibitor, U73122 (1 μM, 48 h), reduced the migration, decreased SOCE and TRP currents, and lowered p-PLCβ3 in atrial fibroblasts, similar to Klotho. In the presence of the U73122 (1 μM, 48 h), Klotho (100 pM, 48 h) could not further modulate the migration and collagen synthesis nor suppress the TRP currents in human atrial fibroblasts.
conclusionsKlotho inhibited pro-fibrotic activities and SOCE by inhibiting the PLC signaling and suppressing the TRP currents, which may provide a novel insight into atrial fibrosis and arrhythmogenesis.
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