Polyphenols of Hibiscus sabdariffa Improved Diabetic Nephropathy via Attenuating Renal Epithelial Mesenchymal Transition

2013 ◽  
Vol 61 (31) ◽  
pp. 7545-7551 ◽  
Author(s):  
Yi-Sun Yang ◽  
Chau-Jong Wang ◽  
Chien-Ning Huang ◽  
Mu-Lin Chen ◽  
Ming-Jinn Chen ◽  
...  
Keyword(s):  
Diabetic Nephropathy ◽  
Epithelial Mesenchymal Transition ◽  
Hibiscus Sabdariffa ◽  
Mesenchymal Transition

Hibiscus sabdariffa polyphenols prevent palmitate-induced renal epithelial mesenchymal transition by alleviating dipeptidyl peptidase-4-mediated insulin resistance

2016 ◽  
Vol 7 (1) ◽  
pp. 475-482 ◽  
Author(s):  
Chien-Ning Huang ◽  
Chau-Jong Wang ◽  
Yi-Sun Yang ◽  
Chih-Li Lin ◽  
Chiung-Huei Peng
Keyword(s):  
Insulin Resistance ◽  
Diabetic Nephropathy ◽  
Epithelial Mesenchymal Transition ◽  
Dipeptidyl Peptidase ◽  
Socioeconomic Impact ◽  
Hibiscus Sabdariffa ◽  
Mesenchymal Transition ◽  
Dipeptidyl Peptidase 4

Diabetic nephropathy has a significant socioeconomic impact, but its mechanism is unclear and needs to be examined.

scholarly journals hsa-miR-199b-3p Prevents the Epithelial-Mesenchymal Transition and Dysfunction of the Renal Tubule by Regulating E-cadherin through Targeting KDM6A in Diabetic Nephropathy

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Shoujun Bai ◽  
Xiaoyan Xiong ◽  
Bo Tang ◽  
Tingting Ji ◽  
Xiaoying Li ◽  
...  
Keyword(s):  
Diabetic Nephropathy ◽  
Renal Tubule ◽  
Epithelial Mesenchymal Transition ◽  
Kidney Tissue ◽  
Target Prediction ◽  
Luciferase Assay ◽  
Renal Tubules ◽  
Mesenchymal Transition ◽  
Hk2 Cells ◽  
E Cadherin

Diabetic nephropathy (DN) is the leading cause of end-stage renal disease. The association between epithelial-mesenchymal transition (EMT) and fibrosis is quite ascertained, but its link to eventual tubule dysfunction is missing. Here, we show that human microRNA- (hsa-miR-) 199b-3p protects renal tubules from diabetic-induced injury by repressing KDM6A, a histone lysine demethylase regulating E-cadherin expression. Lower E-cadherin expression is related to a higher level of KDM6A, while E-cadherin is promoted upon treatment with the KDM6A inhibitor GSK-J4 in both high glucose- (HG-) induced HK2 cells and the kidneys from streptozotocin- (STZ-) induced type 1 diabetic mice. However, overexpression or RNA silencing of E-cadherin fails to alter KDM6A expression. We also show that the upregulation of KDM6A is associated with the increased methylation level of the E-cadherin promoter. Then, the target prediction results and a dual-luciferase assay show that hsa-miR-199b-3p is a new miRNA that targets KDM6A. Overexpression of hsa-miR-199b-3p increases E-cadherin expression and prevents EMT through repressing KDM6A expression in HG-induced HK2 cells. In contrast, inhibitor-induced hsa-miR-199b-3p knockdown has opposite effects, as it decreases E-cadherin level and worsens EMT, accompanied by increased levels of KDM6A. Besides, Mir199b-knockout mice without mmu-miR-119b-3p expression exhibit more renal tubule dysfunction and more serious kidney tissue damage upon treatment with STZ. These results demonstrate that hsa-miR-199b-3p improves E-cadherin expression and prevents the progression of DN through targeting KDM6A. miR-199b-3p could be a future biomarker or target for the diagnosis or treatment of DN.

MiR-32-5p knockdown inhibits epithelial to mesenchymal transition and renal fibrosis by targeting SMAD7 in diabetic nephropathy

2020 ◽  
pp. 096032712095215
Author(s):  
H-J Wang ◽  
H Liu ◽  
Y-H Lin ◽  
S-J Zhang
Keyword(s):  
Diabetic Nephropathy ◽  
Renal Fibrosis ◽  
Epithelial Mesenchymal Transition ◽  
Interstitial Fibrosis ◽  
Kidney Tissue ◽  
Luciferase Reporter ◽  
Luciferase Reporter Gene ◽  
Tubular Atrophy ◽  
Mesenchymal Transition ◽  
Gene Assay

Diabetic nephropathy (DN) is primary cause of end-stage renal disease. A previous study has shown that miR-32-5p (miR-32) is highly expressed in kidney tissue during chronic allograft dysfunction with interstitial fibrosis and tubular atrophy. However, the role of miR-32-5p (miR-32) in DN is still unclear. In this study, streptozotocin-induced DN rat models and high glucose (HG)-incubated human kidney proximal tubular epithelial (HK-2) cells were established to investigate the role and underlying mechanisms of miR-32 in DN. Results of real-time PCR revealed that miR-32 levels were greatly increased in DN rats and HG-incubated HK-2 cells. Downregulation of miR-32 effectively relieved HG-induced autophagy suppression, fibrosis, epithelial-mesenchymal transition (EMT) and inflammation in HK-2 cells. Besides, miR-32 overexpression significantly down-regulated the expression of mothers against decapentaplegic homolog 7 (SMAD7), whereas knockdown of miR-32 markedly up-regulated the level of SMAD7. Dual-luciferase reporter gene assay confirmed that SMAD7 was a target of miR-32. Reintroduction of SMAD7 expression rescued miR-32-induced HK-2 cells autophagy suppression, EMT and renal fibrosis. Our findings indicate that miR-32 may play roles in the progression of EMT and fibrosis in DN.

scholarly journals MicroRNAs in Kidney Fibrosis and Diabetic Nephropathy: Roles on EMT and EndMT

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Swayam Prakash Srivastava ◽  
Daisuke Koya ◽  
Keizo Kanasaki
Keyword(s):  
Diabetic Nephropathy ◽  
Epithelial Mesenchymal Transition ◽  
Kidney Diseases ◽  
Underlying Mechanism ◽  
Kidney Fibrosis ◽  
Mesenchymal Transition ◽  
Small Noncoding Rnas ◽  
Fibrotic Process ◽  
Kidney Liver ◽  
Novel Drug

MicroRNAs (miRNAs) are a family of small, noncoding RNAs that regulate gene expression in diverse biological and pathological processes, including cell proliferation, differentiation, apoptosis, and carcinogenesis. As a result, miRNAs emerged as major area of biomedical research with relevance to kidney fibrosis. Fibrosis is characterized by the excess deposition of extracellular matrix (ECM) components, which is the end result of an imbalance of metabolism of the ECM molecule. Recent evidence suggests that miRNAs participate in the fibrotic process in a number of organs including the heart, kidney, liver, and lung. Epithelial mesenchymal transition (EMT) and endothelial mesenchymal transition (EndMT) programs play vital roles in the development of fibrosis in the kidney. A growing number of the extracellular and intracellular molecules that control EMT and EndMT have been identified and could be exploited in developing therapeutics for fibrosis. This review highlights recent advances on the role of miRNAs in the kidney diseases; diabetic nephropathy especially focused on EMT and EndMT program responsible for the development of kidney fibrosis. These miRNAs can be utilized as a potential novel drug target for the studying of underlying mechanism and treatment of kidney fibrosis.

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