ArticleRNA biology2025
EIF4A3-induced circFAT1 promotes high glucose-induced podocyte damage via miR-30e-5p/SOX4 axis.
Article in RNA biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Podocyte injury significantly contributes to glomerular filtration dysfunction and albuminuria in diabetic nephropathy (DN). Circular RNAs, particularly circFAT1 (hsa_circ_0001461), have emerged as influential regulators in pathological processes. This research focused on exploring the function of hsa_circ_0001461 in high glucose (HG)-induced podocyte damage and the associated underlying mechanism. Here, we demonstrate that circFAT1 is significantly upregulated in HPCs under HG conditions. Inhibition of circFAT1 led to decreased podocyte migration and a restoration of differentiation markers, along with a reduction in mesenchymal markers. Mechanistically, circFAT1 was found to inhibit miR-30e-5p, resulting in enhanced SOX4 expression, which promoted epithelial-mesenchymal transition and migration in podocytes. Moreover, we identified EIF4A3 as a crucial regulator of circFAT1 biogenesis under hyperglycaemic conditions. Importantly, elevated levels of circFAT1 were also detected in DN patients, correlating with increased albuminuria and serum creatinine. In conclusion, this study elucidates the critical role of circFAT1 in HG-induced podocyte injury through the miR-30e-5p/SOX4 signalling pathway. The findings suggest that targeting circFAT1 May offer a potential strategy for DN intervention.
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