ReferenceID 6330
Tectorigenin protects against unilateral ureteral obstruction by inhibiting Smad3-mediated ferroptosis and fibrosis
Phytother Res
Renal tubular epithelial cell (TEC) injury and fibrosis are the key factors of the pathogenesis of chronic kidney disease. Here, we reported that tectorigenin is effectively protected against obstructive nephropathy esta
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- Reference Id
- 6330
- Evidence Id
- 22920
- Core Evidence Id
- 22920
- Source Reference Id
- 5938
- Herb2 Reference Id
- HBREF006735
- Subject Paper Key
- HBIN045833_34964161
- Pubmed Id
- 34964161
- Doi
- 10.1002/ptr.7353
- Paper Title
- Tectorigenin protects against unilateral ureteral obstruction by inhibiting Smad3-mediated ferroptosis and fibrosis
- Paper Abstract
- Renal tubular epithelial cell (TEC) injury and fibrosis are the key factors of the pathogenesis of chronic kidney disease. Here, we reported that tectorigenin is effectively protected against obstructive nephropathy established by unilateral ureteral obstruction (UUO). In vivo, tectorigenin administration significantly alleviated the deteriorations of renal functions including blood urea nitrogen and creatinine. Meanwhile, results from the histology suggested that renal injury characterized by tubular cell damage and fibrosis lesions of kidneys in UUO group were markedly attenuated following tectorigenin treatment. Mechanistically, we found that tectorigenin treatment greatly inhibited Smad3 phosphorylation, and the transcription and protein level of Nox4, a newly identified direct downstream molecule of Smad3 and a modulator of ferroptosis, while it indirectly restored the expression of glutathione peroxidase 4, a negative regulator of ferroptosis. Consistent with in vivo studies, treatment with tectorigenin also suppressed the ferroptosis induced by erastin/RSL3 and fibrosis stimulated by transforming growth factor beta1 (TGF-beta1) in primary renal TECs. What is more, treatment with ferroptosis inhibitor, ferrostatin-1, also impeded TGF-beta1 stimulated the profibrotic effects in TECs, indicating that tectorigenin may relieve fibrosis by inhibiting ferroptosis in TECs. In addition, tectorigenin treatment exhibited a similar tendency, which inhibited Smad3 activation, and the docking analysis revealed that tectorigenin docked well into the Smad3 binding cavity with strong binding affinity (-7.9 kcal/mol). Thus, this study deciphers the protective effect of tectorigenin against obstructive nephropathy through inhibiting Smad3-mediated ferroptosis and fibrosis.
- Journal
- Phytother Res
- Publish Year
- 2022
- Experiment Subject
- Experiment Type
- Animal Experiment
- Phenotype Related
- Chronic Kidney Disease; Renal Injury; Fibrosis Lesions Of Kidneys; Obstructive Nephropathy; Fibrosis; Unilateral Ureteral Obstruction; Renal Tubular Epithelial Cell (tec) Injury
- Paper Title Cn
- Paper Title En
- Tectorigenin protects against unilateral ureteral obstruction by inhibiting Smad3-mediated ferroptosis and fibrosis
- Bilingual Status
- semi_complete