N-acetylcysteine regulates oxalate induced injury of renal tubular epithelial cells through CDKN2B/TGF-β/SMAD axis

© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature..

This study was aimed to investigate the preventive effects of N-acetyl-L-cysteine (NAC) against renal tubular cell injury induced by oxalate and stone formation and further explore the related mechanism. Transcriptome sequencing combined with bioinformatics analysis were performed to identify differentially expressed gene (DEG) and related pathways. HK-2 cells were pretreated with or without antioxidant NAC/with or silencing DEG before exposed to sodium oxalate. Then, the cell viability, oxidative biomarkers of superoxidase dismutase (SOD) and malondialdehyde (MDA), apoptosis and cell cycle were measured through CCK8, ELISA and flow cytometry assay, respectively. Male SD rats were separated into control group, hyperoxaluria (HOx) group, NAC intervention group, and TGF-β/SMAD pathway inhibitor group. After treatment, the structure changes and oxidative stress and CaOx crystals deposition were evaluated in renal tissues by H&E staining, immunohistochemical and Pizzolato method. The expression of TGF-β/SMAD pathway related proteins (TGF-β1, SMAD3 and SMAD7) were determined by Western blot in vivo and in vitro. CDKN2B is a DEG screened by transcriptome sequencing combined with bioinformatics analysis, and verified by qRT-PCR. Sodium oxalate induced declined HK-2 cell viability, in parallel with inhibited cellular oxidative stress and apoptosis. The changes induced by oxalate in HK-2 cells were significantly reversed by NAC treatment or the silencing of CDKN2B. The cell structure damage and CaOx crystals deposition were observed in kidney tissues of HOx group. Meanwhile, the expression levels of SOD and 8-OHdG were detected in kidney tissues of HOx group. The changes induced by oxalate in kidney tissues were significantly reversed by NAC treatment. Besides, expression of SMAD7 was significantly down-regulated, while TGF-β1 and SMAD3 were accumulated induced by oxalate in vitro and in vivo. The expression levels of TGF-β/SMAD pathway related proteins induced by oxalate were reversed by NAC. In conclusion, we found that NAC could play an anti-calculus role by mediating CDKN2B/TGF-β/SMAD axis.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:52

Enthalten in:

Urolithiasis - 52(2024), 1 vom: 23. März, Seite 46

Sprache:

Englisch

Beteiligte Personen:

Cao, Wei [VerfasserIn]
Zhang, Jingbo [VerfasserIn]
Yu, Shiliang [VerfasserIn]
Gan, Xiuguo [VerfasserIn]
An, Ruihua [VerfasserIn]

Links:

Volltext

Themen:

2612HC57YE
Acetylcysteine
CDKN2B/TGF-β/SMAD axis
Calcium Oxalate
EC 1.15.1.1
Journal Article
N-acetyl-l-cysteine
Oxalates
Oxidative stress
Renal tubular cell injury
Superoxide Dismutase
Transforming Growth Factor beta1
WYQ7N0BPYC

Anmerkungen:

Date Completed 25.03.2024

Date Revised 17.04.2024

published: Electronic

Citation Status MEDLINE

doi:

10.1007/s00240-023-01527-2

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370100735