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Sun R, Han M, Liu Y, Su Y, Shi Q, Huang L, Kong L, Li W, Li W. Trpc6 knockout protects against renal fibrosis by restraining the CN‑NFAT2 signaling pathway in T2DM mice. Mol Med Rep 2024; 29:13. [PMID: 38038121 DOI: 10.3892/mmr.2023.13136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Diabetic kidney disease (DKD), one of the common complications of type‑2 diabetes mellitus (T2DM), has become the principal cause of end‑stage kidney disease. Transient receptor potential channel 6 (TRPC6), one of non‑selective cation channels with significant calcium‑permeability, is associated with renal fibrosis. However, the mechanism of TRPC6 in T2DM‑induced renal fibrosis is still not entirely understood. The present study explored the potential mechanism of Trpc6 knockout in T2DM‑induced renal fibrosis in Trpc6‑/‑ mice. The results showed that Trpc6 knockout inhibited the loss of body weight and the increase of fasting blood glucose (FBG) and significantly improved renal dysfunction and glomerular fibrosis in T2DM mice. The present study also indicated that Trpc6 knockout significantly lowered the expression of phosphorylated (p‑)SMAD2/3, TGF‑β, calcineurin (CN), nuclear factor of activated T‑cell (NFAT)2 and Nod‑like receptor (NLR) 3 inflammasome‑associated proteins. Calcium imaging results revealed that Trpc6 knockdown could decrease the levels of [Ca2+]i and inhibited calcium homeostasis imbalance. Moreover, it was found that knockout of Trpc6 had no significant influence on lipid disposition and reactive oxygen species generation in the kidney cortex. The present study suggested that knockout of Trpc6 may alleviate glomerular fibrosis and delay DKD progression by reducing [Ca2+]i overload and inhibiting the CN‑NFAT2 pathway in T2DM mice.
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Affiliation(s)
- Ran Sun
- Department of Pharmacology, Grade III Laboratory of National Administration of Traditional Chinese Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Min Han
- Department of Pharmacology, Grade III Laboratory of National Administration of Traditional Chinese Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yan Liu
- Department of Pharmacology, Grade III Laboratory of National Administration of Traditional Chinese Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yong Su
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Qifeng Shi
- Department of Pharmacology, Grade III Laboratory of National Administration of Traditional Chinese Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Lei Huang
- Department of Pharmacology, Grade III Laboratory of National Administration of Traditional Chinese Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Liangliang Kong
- Department of Pharmacology, Grade III Laboratory of National Administration of Traditional Chinese Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Weizu Li
- Department of Pharmacology, Grade III Laboratory of National Administration of Traditional Chinese Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Weiping Li
- Department of Pharmacology, Grade III Laboratory of National Administration of Traditional Chinese Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
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