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TGF-β Promotes Endothelial-to-Mesenchymal Transition and Alters Corneal Endothelial Cell Migration in Fuchs Endothelial Corneal Dystrophy
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TGF-β Promotes Endothelial-to-Mesenchymal Transition and Alters Corneal Endothelial Cell Migration in Fuchs Endothelial Corneal Dystrophy
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Journal Article
TGF-β Promotes Endothelial-to-Mesenchymal Transition and Alters Corneal Endothelial Cell Migration in Fuchs Endothelial Corneal Dystrophy
2025
Overview
Fuchs endothelial corneal dystrophy (FECD) is a progressive corneal disease characterized by corneal endothelial cell (CEC) loss and guttae formation. Elevated levels of Transforming Growth Factor-Beta 1 and 2 (TGF-β1/-β2) have been reported in the aqueous humor (AH) of FECD patients and have been implicated with abnormal extracellular matrix (ECM) production, endothelial-to-mesenchymal transition (EndoMT), the unfolded protein response, and cell death. However, how TGF-β signaling affects cell migration in FECD remains to be elucidated. In this study, we found that TGF-β2 levels were significantly elevated in the AH of FECD patients compared to controls. We performed bulk RNA sequencing on FECD CECs treated with TGF-β1 or TGF-β2 and identified the epithelial-to-mesenchymal (EMT) pathway as one of the top dysregulated pathways. We found that TGF-β1 and TGF-β2 increased EMT markers, filamentous-actin (F-actin) expression and produced more EMT-like phenotype in FECD and control CECs. We also observed that TGF-β1 and TGF-β2 significantly increased FECD CEC migration speed as detected by scratch assay and individual cell tracking and promoted individual cellular migration behavior. This study provides novel insight into FECD pathogenesis and how increased TGF-β signaling promotes EndoMT and alters cellular migration in FECD CECs.
Publisher
MDPI AG,MDPI
Subject
/ Cell Movement - drug effects
/ Cornea
/ Edema
/ Endothelial Cells - drug effects
/ Endothelial Cells - metabolism
/ Endothelial Cells - pathology
/ Endothelium, Corneal - metabolism
/ Endothelium, Corneal - pathology
/ Epithelial-Mesenchymal Transition - drug effects
/ Ethylenediaminetetraacetic acid
/ Female
/ Fuchs' Endothelial Dystrophy - genetics
/ Fuchs' Endothelial Dystrophy - metabolism
/ Fuchs' Endothelial Dystrophy - pathology
/ Genes
/ Humans
/ Male
/ RNA
/ Transforming Growth Factor beta - metabolism
/ Transforming Growth Factor beta1 - metabolism
/ Transforming Growth Factor beta1 - pharmacology
/ Transforming Growth Factor beta2 - metabolism
