Abstract | PURPOSE:
Diabetic nephropathy (DN) is one of the most serious complications of diabetes that leads to decline of renal function. Although numerous studies have revealed that microRNAs ( miRNAs) play essential roles in the progression of DN, whether miR-365 is involved remains elusive. METHODS: The successful construction of DN model was confirmed by ELSIA, hematoxylin- eosin (HE) and Masson staining assay. The expression of miR-365 was detected through RT-qPCR. The levels of BDNF, p-TrkB, α-smooth muscle actin (SMA), collagen IV (Col.IV), transforming growth factor-β1 (TGF-β1), tumor necrosis factor α (TNF-α), and interleukin-6 (IL-6) were evaluated by western blot, IF or ELISA assays. Luciferase reporter assay was used to detect the interaction between miR-365 and BDNF. RESULTS: The DN mice model was induced by streptozotocin (STZ). Then miR-365 expression was found to upregulate in tissues of DN rat. Furthermore, elevated expression of miR-365 was found in high glucose (HG)-treated HK-2 cells. Silencing of miR-365 suppressed the accumulation of ECM components and secretion of inflammatory cytokines in HK-2 cells. In addition, it was demonstrated that miR-365 could target BDNF. The protein levels of BDNF and p-TrkB were negatively regulated by miR-365 in HK-2 cells. Moreover, inhibition of miR-365 suppressed the levels of SMA, Col.IV, TGF-β1, TNF-α, and IL-6, indicating the renal fibrosis was inhibited by miR-365 knockdown. CONCLUSION: MiR-365 could regulate BDNF-TrkB signal axis in STZ induced DN fibrosis and renal function. The results of the current study might provide a promising biomarker for the treatment of DN in the future.
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Authors | Peng Zhao, Xiaqiu Li, Yang Li, Jiaying Zhu, Yu Sun, Jianli Hong |
Journal | International urology and nephrology
(Int Urol Nephrol)
Vol. 53
Issue 10
Pg. 2177-2187
(Oct 2021)
ISSN: 1573-2584 [Electronic] Netherlands |
PMID | 33881703
(Publication Type: Journal Article)
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Copyright | © 2021. The Author(s), under exclusive licence to Springer Nature B.V. |
Chemical References |
- Brain-Derived Neurotrophic Factor
- MIRN365 microRNA, mouse
- Membrane Glycoproteins
- MicroRNAs
- Ntrk2 protein, mouse
- Protein-Tyrosine Kinases
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Topics |
- Animals
- Brain-Derived Neurotrophic Factor
(physiology)
- Cells, Cultured
- Diabetes Mellitus, Experimental
(complications, physiopathology)
- Diabetic Nephropathies
(complications, physiopathology)
- Fibrosis
(etiology)
- Humans
- Kidney
(pathology, physiopathology)
- Male
- Membrane Glycoproteins
(physiology)
- Mice
- MicroRNAs
(physiology)
- Protein-Tyrosine Kinases
(physiology)
- Rats
- Rats, Sprague-Dawley
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