EW-7197 Attenuates the Progression of Diabetic Nephropathy in db/db Mice through Suppression of Fibrogenesis and Inflammationopen access
- Authors
- Ha, Kyung Bong; Sangartit, Weerapon; Jeong, Ah Reum; Lee, Eun Soo; Kim, Hong Min; Shim, Soyeon; Kukongyiriyapan, Upa; Kim, Dae-Kee; Lee, Eun Young; Chung, Choon Hee
- Issue Date
- 1-Feb-2022
- Publisher
- 대한내분비학회
- Keywords
- Diabetic nephropathies; Glomerular mesangial cells; Podocytes; Transforming growth factor beta; Activin receptor-like kinase 5
- Citation
- Endocrinology and Metabolism, v.37, no.1, pp 96 - 111
- Pages
- 16
- Journal Title
- Endocrinology and Metabolism
- Volume
- 37
- Number
- 1
- Start Page
- 96
- End Page
- 111
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/20547
- DOI
- 10.3803/EnM.2021.1305
- ISSN
- 2093-596X
2093-5978
- Abstract
- Background: Diabetic nephropathy (DN) is characterized by albuminuria and accumulation of extracellular matrix (ECM) in kidney. Transforming growth factor-f3 (TGF-f3) plays a central role in promoting ECM accumulation. We aimed to examine the effects of EW-7197, an inhibitor of TGF-f3 type 1 receptor kinase (ALK5), in retarding the progression of DN, both in vivo, using a diabetic mouse model (db/db mice), and in vitro, in podocytes and mesangial cells. Methods: In vivo study: 8-week-old db/db mice were orally administered EW-7197 at a dose of 5 or 20 mg/kg/day for 10 weeks. Metabolic parameters and renal function were monitored. Glomerular histomorphology and renal protein expression were evaluated by histochemical staining and Western blot analyses, respectively. In vitro study: DN was induced by high glucose (30 mM) in podocytes and TGF-f3 (2 ng/mL) in mesangial cells. Cells were treated with EW-7197 (500 nM) for 24 hours and the mechanism associated with the attenuation of DN was investigated. Results: Enhanced albuminuria and glomerular morphohistological changes were observed in db/db compared to that of the nondiabetic (db/m) mice. These alterations were associated with the activation of the TGF-f3 signaling pathway. Treatment with EW-7197 significantly inhibited TGF-f3 signaling, inflammation, apoptosis, reactive oxygen species, and endoplasmic reticulum stress in diabetic mice and renal cells. Conclusion: EW-7197 exhibits renoprotective effect in DN. EW-7197 alleviates renal fibrosis and inflammation in diabetes by inhibiting downstream TGF-f3 signaling, thereby retarding the progression of DN. Our study supports EW-7197 as a therapeutically beneficial compound to treat DN.
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