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Pereira BP, Silva AO, Awata WMC, Pimenta GF, Ribeiro JM, de Faria Almeida CA, Antonietto CRK, Dos Reis LFC, Esteves A, Torres LHL, de Araújo Paula FB, Ruginsk SG, Tirapelli CR, Rizzi E, Ceron CS. Curcumin Prevents Renal Damage of l-NAME Induced Hypertension in by Reducing MMP-2 and MMP-9. Cell Biochem Funct 2024; 42:e4119. [PMID: 39244707 DOI: 10.1002/cbf.4119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/11/2024] [Accepted: 08/16/2024] [Indexed: 09/10/2024]
Abstract
In the present study, we investigated whether curcumin administration would interfere with the main renal features of l-NAME-induced hypertension model. For this purpose, we conducted both in vitro and in vivo experiments to evaluate renal indicators of inflammation, oxidative stress, and metalloproteinases (MMPs) expression/activity. Hypertension was induced by l-NAME (70 mg/kg/day), and Wistar rats from both control and hypertensive groups were treated with curcumin (50 or 100 mg/kg/day; gavage) or vehicle for 14 days. Blood and kidneys were collected to determine serum creatinine levels, histological alterations, oxidative stress, MMPs expression and activity, and ED1 expression. l-NAME increased blood pressure, but both doses of curcumin treatment reduced these values. l-NAME treatment increased creatinine levels, glomeruli area, Bowman's space, kidney MMP-2 activity, as well as MMP-9 and ED1 expression, and reduced the number of glomeruli. Curcumin treatment prevented the increase in creatinine levels, MMP-2 activity, and reduced MMP-2, MMP-9, ED1, and superoxide levels, as well as increased superoxide dismutase activity and partially prevented glomeruli alterations. Moreover, curcumin directly inhibited MMP-2 activity in vitro. Thus, our main findings demonstrate that curcumin reduced l-NAME-induced hypertension and renal glomerular alterations, inhibited MMP-2 and MMP-9 expression/activity, and reduced oxidative stress and inflammatory processes, which may indirectly impact hypertension-induced renal outcomes.
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Affiliation(s)
- Bruna Pinheiro Pereira
- Food and Medicines Department, Federal University of Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil
| | - Alessandra Oliveira Silva
- Food and Medicines Department, Federal University of Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil
| | | | - Gustavo Félix Pimenta
- Faculty of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, São Paulo, Brazil
| | - Jéssyca Milene Ribeiro
- Food and Medicines Department, Federal University of Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil
| | | | | | - Luis Felipe Cunha Dos Reis
- Department of Structural Biology, Biomedical Sciences Institute, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Alessandra Esteves
- Department of Anatomy, Biomedical Sciences Institute, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | | | | | - Sílvia Graciela Ruginsk
- Department of Physiological Sciences, Biomedical Sciences Institute, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Carlos Renato Tirapelli
- Faculty of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, São Paulo, Brazil
| | - Ellen Rizzi
- Unit of Biotechnology, University of Ribeirao Preto (UNAERP), Ribeirão Preto, Brazil
| | - Carla Speroni Ceron
- Department of Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Minas Gerais, Brazil
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Sharma V, Khokhar M, Panigrahi P, Gadwal A, Setia P, Purohit P. Advancements, Challenges, and clinical implications of integration of metabolomics technologies in diabetic nephropathy. Clin Chim Acta 2024; 561:119842. [PMID: 38969086 DOI: 10.1016/j.cca.2024.119842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 06/25/2024] [Accepted: 06/29/2024] [Indexed: 07/07/2024]
Abstract
BACKGROUND Diabetic nephropathy (DN), a severe complication of diabetes, involves a range of renal abnormalities driven by metabolic derangements. Metabolomics, revealing dynamic metabolic shifts in diseases like DN and offering insights into personalized treatment strategies, emerges as a promising tool for improved diagnostics and therapies. METHODS We conducted an extensive literature review to examine how metabolomics contributes to the study of DN and the challenges associated with its implementation in clinical practice. We identified and assessed relevant studies that utilized metabolomics methods, including nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry (MS) to assess their efficacy in diagnosing DN. RESULTS Metabolomics unveils key pathways in DN progression, highlighting glucose metabolism, dyslipidemia, and mitochondrial dysfunction. Biomarkers like glycated albumin and free fatty acids offer insights into DN nuances, guiding potential treatments. Metabolomics detects small-molecule metabolites, revealing disease-specific patterns for personalized care. CONCLUSION Metabolomics offers valuable insights into the molecular mechanisms underlying DN progression and holds promise for personalized medicine approaches. Further research in this field is warranted to elucidate additional metabolic pathways and identify novel biomarkers for early detection and targeted therapeutic interventions in DN.
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Affiliation(s)
- V Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan 342005, India
| | - M Khokhar
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan 342005, India
| | - P Panigrahi
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan 342005, India
| | - A Gadwal
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan 342005, India
| | - P Setia
- Department of Forensic Medicine and Toxicology, All India Institute of Medical Sciences, Jodhpur, Rajasthan 342005, India
| | - P Purohit
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan 342005, India.
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Dh HS, Sultana R, Prabhu A, S R P, Mohanto S, Subramaniyan V. Biomedicine and pharmacotherapeutic effectiveness of combinatorial atorvastatin and quercetin on diabetic nephropathy: An in vitro study. Biomed Pharmacother 2024; 174:116533. [PMID: 38574626 DOI: 10.1016/j.biopha.2024.116533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 03/22/2024] [Accepted: 03/29/2024] [Indexed: 04/06/2024] Open
Abstract
INTRODUCTION Diabetic nephropathy is a type of kidney disorder that develops as a complication of multifactorial diabetes. Diabetic nephropathy is characterized by microangiopathy, resulting from glucose metabolism, oxidative stress, and changes in renal hemodynamics. This study strived to evaluate the in vitro cytoprotective activity of atorvastatin (ATR), and quercetin (QCT) alone and in combination against diabetic nephropathy. METHODS The MTT assay was utilized to analyze the effects of the test compounds on NRK-52E rat kidney epithelial cells. The detection of apoptosis and ability to scavenge free radicals was assessed via acridine orange-ethidium bromide (AO-EB) dual fluorescence staining, and 2,2-diphenyl-1-picrylhydrazyfree assay (DPPH), respectively. The ability of anti-inflammatory effect of the test compounds and western blot analysis against TGF-β, TNF-α, and IL-6 further assessed to determine the combinatorial efficacy. RESULTS Atorvastatin and quercetin treatment significantly lowered the expression of TGF-β, TNF-α, and IL-6 indicating the protective role in Streptozotocin-induced nephrotoxicity. The kidney cells treated with a combination of atorvastatin and quercetin showed green fluorescing nuclei in the AO-EB staining assay, indicating that the combination treatment restored cell viability. Quercetin, both alone and in combination with atorvastatin, demonstrated strong DPPH free radical scavenging activity and further encountered an anti-oxidant and anti-inflammatory effect on the combination of these drugs. CONCLUSION Nevertheless, there is currently no existing literature that reports on the role of QCT as a combination renoprotective drug with statins in the context of diabetic nephropathy. Hence, these findings suggest that atorvastatin and quercetin may have clinical potential in treating diabetic nephropathy.
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Affiliation(s)
- Haleema Shahin Dh
- Department of Pharmacognosy, Yenepoya Pharmacy College & Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018, India
| | - Rokeya Sultana
- Department of Pharmacognosy, Yenepoya Pharmacy College & Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018, India.
| | - Ashwini Prabhu
- Division of Cancer Research and Therapeutics (CaRT), Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018, India.
| | - Pavan S R
- Division of Cancer Research and Therapeutics (CaRT), Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018, India
| | - Sourav Mohanto
- Department of Pharmaceutics, Yenepoya Pharmacy College & Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018, India.
| | - Vetriselvan Subramaniyan
- Pharmacology Unit, Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Malaysia.
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Benitez MBM, Navarro YP, Azuara-Liceaga E, Cruz AT, Flores JV, Lopez-Canovas L. Circular RNAs and the regulation of gene expression in diabetic nephropathy (Review). Int J Mol Med 2024; 53:44. [PMID: 38516776 PMCID: PMC10998718 DOI: 10.3892/ijmm.2024.5368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 02/14/2024] [Indexed: 03/23/2024] Open
Abstract
Circular RNAs (circRNAs) are non‑coding single‑stranded covalently closed RNA molecules that are considered important as regulators of gene expression at the transcriptional and post‑transcriptional levels. These molecules have been implicated in the initiation and progression of multiple human diseases, ranging from cancer to inflammatory and metabolic diseases, including diabetes mellitus and its vascular complications. The present article aimed to review the current knowledge on the biogenesis and functions of circRNAs, as well as their role in cell processes associated with diabetic nephropathy. In addition, novel potential interactions between circRNAs expressed in renal cells exposed to high‑glucose concentrations and the transcription factors c‑Jun and c‑Fos are reported.
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Affiliation(s)
- Maximo Berto Martinez Benitez
- Postgraduate Program in Genomic Sciences, Science and Technology School, Autonomous University of Mexico City, Mexico City, CP 03100, Mexico
| | - Yussel Pérez Navarro
- Postgraduate Program in Genomic Sciences, Science and Technology School, Autonomous University of Mexico City, Mexico City, CP 03100, Mexico
| | - Elisa Azuara-Liceaga
- Postgraduate Program in Genomic Sciences, Science and Technology School, Autonomous University of Mexico City, Mexico City, CP 03100, Mexico
| | - Angeles Tecalco Cruz
- Postgraduate Program in Genomic Sciences, Science and Technology School, Autonomous University of Mexico City, Mexico City, CP 03100, Mexico
| | - Jesús Valdés Flores
- Biochemistry Department, Center for Research and Advanced Studies, National Polytechnic Institute of Mexico, Mexico City, CP 07360, Mexico
| | - Lilia Lopez-Canovas
- Postgraduate Program in Genomic Sciences, Science and Technology School, Autonomous University of Mexico City, Mexico City, CP 03100, Mexico
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Harris RC. The Role of the Epidermal Growth Factor Receptor in Diabetic Kidney Disease. Cells 2022; 11:3416. [PMID: 36359813 PMCID: PMC9656309 DOI: 10.3390/cells11213416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 08/02/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) is expressed in numerous cell types in the adult mammalian kidney and is activated by a family of EGF-like ligands. EGFR activation has been implicated in a variety of physiologic and pathophysiologic functions. There is increasing evidence that aberrant EGFR activation is a mediator of progressive kidney injury in diabetic kidney disease. This review will highlight recent studies indicating its potential role and mechanisms of injury of both glomerular and tubular cells in development and progression of diabetic kidney disease.
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Affiliation(s)
- Raymond C. Harris
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt Center for Kidney Disease, Vanderbilt University Medical Center, Nashville, TN 37232, USA; ; Tel.: +1-615-202-9426
- Tennessee and Veterans Affairs, Nashville, TN 37232, USA
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Asmy VSS, Natarajan J. Comparative co-expression analysis of RNA-Seq transcriptome revealing key genes, miRNA and transcription factor in distinct metabolic pathways in diabetic nerve, eye, and kidney disease. Genomics Inform 2022; 20:e26. [PMID: 36239103 PMCID: PMC9576479 DOI: 10.5808/gi.22029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 09/02/2022] [Indexed: 12/02/2022] Open
Abstract
Diabetes and its related complications are associated with long term damage and failure of various organ systems. The microvascular complications of diabetes considered in this study are diabetic retinopathy, diabetic neuropathy, and diabetic nephropathy. The aim is to identify the weighted co-expressed and differentially expressed genes (DEGs), major pathways, and their miRNA, transcription factors (TFs) and drugs interacting in all the three conditions. The primary goal is to identify vital DEGs in all the three conditions. The overlapped five genes (AKT1, NFKB1, MAPK3, PDPK1, and TNF) from the DEGs and the co-expressed genes were defined as key genes, which differentially expressed in all the three cases. Then the protein-protein interaction network and gene set linkage analysis (GSLA) of key genes was performed. GSLA, gene ontology, and pathway enrichment analysis of the key genes elucidates nine major pathways in diabetes. Subsequently, we constructed the miRNA-gene and transcription factor-gene regulatory network of the five gene of interest in the nine major pathways were studied. hsa-mir-34a-5p, a major miRNA that interacted with all the five genes. RELA, FOXO3, PDX1, and SREBF1 were the TFs interacting with the major five gene of interest. Finally, drug-gene interaction network elucidates five potential drugs to treat the genes of interest. This research reveals biomarker genes, miRNA, TFs, and therapeutic drugs in the key signaling pathways, which may help us, understand the processes of all three secondary microvascular problems and aid in disease detection and management.
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Affiliation(s)
- Veerankutty Subaida Shafna Asmy
- Data Mining and Text Mining Laboratory, Department of Bioinformatics, Bharathiar University, Coimbatore, Tamilnadu 641 046, India
| | - Jeyakumar Natarajan
- Data Mining and Text Mining Laboratory, Department of Bioinformatics, Bharathiar University, Coimbatore, Tamilnadu 641 046, India
- Corresponding author E-mail:
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Dey P, Kundu A, Lee HE, Kar B, Vishal V, Dash S, Kim IS, Bhakta T, Kim HS. Molineria recurvata Ameliorates Streptozotocin-Induced Diabetic Nephropathy through Antioxidant and Anti-Inflammatory Pathways. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27154985. [PMID: 35956936 PMCID: PMC9370403 DOI: 10.3390/molecules27154985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 11/23/2022]
Abstract
Molineria recurvata (MR) has been traditionally used to manage diabetes mellitus in India. However, the molecular mechanism of MR on the diabetic-induced nephropathy has not been clearly investigated. Thus, this study investigates the protective effects of the MR extract on nephropathy in streptozotocin (STZ)-induced diabetic rats. Diabetes was instigated by a single intraperitoneal injection of STZ (45 mg/kg) in male Sprague-Dawley rats. Once the diabetes was successfully induced, the MR extract (200 mg/kg/day) or metformin (200 mg/kg/day) was orally administered for 14 days. Renal function, morphology changes and levels of inflammatory cytokines were measured. Blood glucose concentrations were considerably reduced in STZ-induced diabetic rats following treatment with the MR extract. The administration of the MR extract substantially restored the abnormal quantity of the oxidative DNA damage marker 8-hydroxy-2′-deoxy-guanosine (8-OHdG), malondialdehyde, glutathione, oxidized glutathione, superoxide dismutase, catalase, interleukin (IL)-1β, IL-6, IL-10, and transforming growth factor-β (TGF-β). The urinary excretion of kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), selenium binding protein 1 (SBP1), and pyruvate kinase M2 (PKM2) was significantly reduced in diabetes rats after administration of the MR extracts. In the kidneys of STZ-induced diabetic rats, the MR extracts markedly downregulated the expression of fibronectin, collagen-1, and α-smooth muscle actin (α-SMA). In particular, the MR extracts markedly increased the level of SIRT1 and SIRT3 and reduced claudin-1 in the kidney. These results suggest that the MR extracts exhibits therapeutic activity in contrast to renal injury in STZ-induced diabetic rats through repressing inflammation and oxidative stress.
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Affiliation(s)
- Prasanta Dey
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
| | - Amit Kundu
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
| | - Ha Eun Lee
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
| | - Babli Kar
- Bengal Homoeopathic Medical College and Hospital, Asansol 713301, India
| | - Vineet Vishal
- Department of Botany, Bangabasi Evening College, Kolkata 700009, India
| | - Suvakanta Dash
- Regional Institute of Pharmaceutical Science & Technology, Agartala 799006, India
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
| | - Tejendra Bhakta
- Regional Institute of Pharmaceutical Science & Technology, Agartala 799006, India
- Correspondence: (T.B.); (H.S.K.)
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea
- Correspondence: (T.B.); (H.S.K.)
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Chen H, Zhang Z, Zhou L, Cai T, Liu B, Wang L, Yang J. Identification of CCL19 as a Novel Immune-Related Biomarker in Diabetic Nephropathy. Front Genet 2022; 13:830437. [PMID: 35222545 PMCID: PMC8864156 DOI: 10.3389/fgene.2022.830437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/24/2022] [Indexed: 01/07/2023] Open
Abstract
Diabetic nephropathy (DN) is one of the major microvascular complications in diabetic patients and the leading cause of end-stage renal disease (ESRD). Previous studies found that immune-related genes and immune cell infiltration play important roles in the pathogenesis and development of DN. Therefore, this study aimed to explore immune-related biomarkers in DN. In this research, three microarray datasets that included 18 DN and 28 healthy tubule samples were downloaded and integrated as the training set to identify differentially expressed immune-related genes (DEIGs). A total of 63 DEIGs were identified, and most upregulated DEIGs were primarily involved in the inflammatory response and chemokine-mediated signaling pathways. The Microenvironment Cell Populations-counter (MCP-counter) algorithm was then used to estimate the abundance of infiltrated immune and stromal cell populations. According to DEIG, weighted gene coexpression network and protein–protein network analyses, CCL19 was identified as the hub immune-related biomarker. Moreover, the upregulated level of CCL19 was confirmed in other independent datasets as well as in in vitro experiments with high glucose. In summary, this study provides novel insights into the pathogenesis of diabetic nephropathy and identifies CCL19 as a potential critical gene of DN.
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Affiliation(s)
- Hanzhi Chen
- Center for Kidney Disease, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Zhijian Zhang
- Department of Nephrology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Leting Zhou
- Department of Nephrology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Ting Cai
- Department of Nephrology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Bin Liu
- Department of Nephrology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Liang Wang
- Department of Nephrology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
- *Correspondence: Liang Wang, ; Junwei Yang,
| | - Junwei Yang
- Center for Kidney Disease, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Liang Wang, ; Junwei Yang,
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Wang H, Zhang R, Wu X, Chen Y, Ji W, Wang J, Zhang Y, Xia Y, Tang Y, Yuan J. The Wnt Signaling Pathway in Diabetic Nephropathy. Front Cell Dev Biol 2022; 9:701547. [PMID: 35059392 PMCID: PMC8763969 DOI: 10.3389/fcell.2021.701547] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 12/06/2021] [Indexed: 12/17/2022] Open
Abstract
Diabetic nephropathy (DN) is a serious kidney-related complication of both type 1 and type 2 diabetes mellitus (T1DM, T2DM) and the second major cause of end-stage kidney disease. DN can lead to hypertension, edema, and proteinuria. In some cases, DN can even progress to kidney failure, a life-threatening condition. The precise etiology and pathogenesis of DN remain unknown, although multiple factors are believed to be involved. The main pathological manifestations of DN include mesangial expansion, thickening of the glomerular basement membrane, and podocyte injury. Eventually, these pathological manifestations will lead to glomerulosclerosis, thus affecting renal function. There is an urgent need to develop new strategies for the prevention and treatment of DN. Existing evidence shows that the Wnt signaling cascade plays a key role in regulating the development of DN. Previous studies focused on the role of the Wnt canonical signaling pathway in DN. Subsequently, accumulated evidence on the mechanism of the Wnt non-canonical signaling indicated that Wnt/Ca2+ and Wnt/PCP also have essential roles in the progression of DN. In this review, we summarize the specific mechanisms of Wnt signaling in the occurrence and development of DN in podocyte injury, mesangial cell injury, and renal fibrosis. Also, to elucidate the significance of the Wnt canonical pathway in the process of DN, we uncovered evidence supporting that both Wnt/PCP and Wnt/Ca2+ signaling are critical for DN development.
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Affiliation(s)
- Haiying Wang
- Department of Physiology, Jining Medical University, Jining, China
| | - Ran Zhang
- Basic Medical School, Jining Medical University, Jining, China
| | - Xinjie Wu
- Basic Medical School, Jining Medical University, Jining, China
| | - Yafen Chen
- Basic Medical School, Jining Medical University, Jining, China
| | - Wei Ji
- Basic Medical School, Jining Medical University, Jining, China
| | - Jingsuo Wang
- Basic Medical School, Jining Medical University, Jining, China
| | - Yawen Zhang
- Basic Medical School, Jining Medical University, Jining, China
| | - Yong Xia
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, China
| | - Yiqun Tang
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Jinxiang Yuan
- Collaborative Innovation Center, Jining Medical University, Jining, China
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Yang H, Fang X, Shen Y, Yao W, Chen D, Shen L. MiR-153-3p reduces extracellular matrix accumulation in high glucose-stimulated human glomerular mesangial cells via targeting PAQR3 in diabetic nephropathy. ENDOCRINOL DIAB NUTR 2022; 69:34-42. [PMID: 35232557 DOI: 10.1016/j.endien.2022.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 03/01/2021] [Indexed: 06/14/2023]
Abstract
INTRODUCTION This study aims to explore the effect and related molecular mechanism of miR-153-3p on high glucose-stimulated human glomerular mesangial cells. MATERIALS AND METHODS The quantitative real-time polymerase chain reaction (qPCR) assay was employed to check miR-153-3p and PAQR3 expression levels in diabetic nephropathy patients. (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) MTT assay was applied to investigate the effects of miR-153-3p transfection or PAQR3 administration on mesangial cell (MC) activity. ELISA assays were used to check the expression levels of extracellular matrix (ECM) related proteins. The bioinformatics method and dual-luciferase reporter assay were employed together to anticipate and check the targeting relationship between miR-153-3p and PAQR3. Western blot assays were applied to check the PAQR3, PI3K and AKT expression after miR-153-3p transfection or PAQR3 administration. RESULTS The expression level of miR-153-3p was lower in diabetic nephropathy patients, while the expression of PAQR3 was concomitantly higher. Upregulation of miR-153-3p can reduce MC proliferation and ECM accumulation. Further research indicated that miR-153-3p directly regulated PAQR3 expression via coupling with the 3'-UTR of PAQR3. Finally, the fact that miR-153-3p regulates the PI3K/AKT pathway by PAQR3 was confirmed. CONCLUSION MiR-153-3p regulates the PI3K/AKT pathway through PAQR3, thereby playing a role in regulating cell proliferation and ECM accumulation in high glucose-stimulated MCs.
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Affiliation(s)
- Hongli Yang
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Xingxing Fang
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Yan Shen
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Wubin Yao
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Dongmei Chen
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Lianglan Shen
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China.
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11
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Casagrande V, Federici M, Menghini R. TIMP3 involvement and potentiality in the diagnosis, prognosis and treatment of diabetic nephropathy. Acta Diabetol 2021; 58:1587-1594. [PMID: 34181080 PMCID: PMC8542557 DOI: 10.1007/s00592-021-01766-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 06/14/2021] [Indexed: 11/28/2022]
Abstract
Diabetic kidney disease, one of the most severe complications associated with diabetes, is characterized by albuminuria, glomerulosclerosis and progressive loss of renal function. Loss of TIMP3, an Extracellular matrix-bound protein, is a hallmark of diabetic nephropathy in human and mouse models, suggesting its pivotal role in renal diseases associated to diabetes. There is currently no specific therapy for diabetic nephropathy, and the ability to restore high TIMP3 activity specifically in the kidney may represent a potential therapeutic strategy for the amelioration of renal injury under conditions in which its reduction is directly related to the disease. Increasing evidence shows that diabetic nephropathy is also regulated by epigenetic mechanisms, including noncoding RNA. This review recapitulates the pathological, diagnostic and therapeutic potential roles of TIMP3 and the noncoding RNA (microRNA, long noncoding RNA) related to its expression, in the progression of diabetic nephropathy.
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Affiliation(s)
- Viviana Casagrande
- Departments of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Massimo Federici
- Departments of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
- Center for Atherosclerosis, Department of Medical Sciences, Policlinico Tor Vergata University, Rome, Italy
| | - Rossella Menghini
- Departments of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy.
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12
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Xie J, Yuan Y, Yao G, Chen Z, Yu W, Zhu Q. Nucleoporin 160 (NUP160) inhibition alleviates diabetic nephropathy by activating autophagy. Bioengineered 2021; 12:6390-6402. [PMID: 34533106 PMCID: PMC8806760 DOI: 10.1080/21655979.2021.1968777] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Diabetic nephropathy (DN) is the leading cause of end-stage renal disease worldwide. Autophagy was reported to be related to the pathogenesis of DN. This research investigated the function of the Nucleoporin 160 (Nup160) gene in regulating autophagy in DN. A mouse model of DN was established through an intraperitoneal injection of streptozotocin (STZ). Normal rat kidney tubular epithelial cells (NRK-52E) were treated with high glucose to induce DN in vitro. Real-time quantitative polymerase chain reaction (RT-qPCR), western blot, immunofluorescence assays were conducted to measure the expression of NUP160, autophagy-associated proteins, and inflammatory cytokines in vitro and in vivo. Pathological changes of kidney and liver tissues were analyzed using hematoxylin and eosin (H&E), Masson and periodic acid-silver (PAS) staining. The body weight, blood glucose, renal and lipid profiles of DN mice were examined. In this study, DN mice showed serious pathological injury. NUP160 expression was upregulated, autophagy was inhibited, and inflammatory response was increased in DN mice. Depletion of NUP160 restored autophagy and inhibited inflammation and fibrosis in high glucose (HG)-treated NRK-52E cells and STZ-induced DN mice by downregulating the expression of p62 and Collagen IV (Col-Ⅳ), increasing the ratio of LC3II/LC3I, and inactivating nuclear factor (NF)-κB signaling. Moreover, NUP160 knockdown could ameliorate pathological damage and glucose tolerance in DN mice. Overall, this study is the first to demonstrate the key role of NUP160 silencing in promoting autophagy against diabetic injury in DN.
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Affiliation(s)
- Jiayong Xie
- Department of Nephrology, Xinghua People's Hospital, Taizhou Jiangsu, China
| | - Ying Yuan
- Department of Nephrology, Xinghua People's Hospital, Taizhou Jiangsu, China
| | - Gang Yao
- Department of Nephrology, Second Affiliated Hospital of Nanjing Medical University, Nanjing Jiangsu, China
| | - Zhi Chen
- Department of Laboratory, Xinghua People's Hospital, Taizhou Jiangsu, China
| | - Wenjuan Yu
- Department of Nephrology, Second Affiliated Hospital of Nanjing Medical University, Nanjing Jiangsu, China
| | - Qiang Zhu
- Department of Nephrology, Xinghua People's Hospital, Taizhou Jiangsu, China
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Yang H, Fang X, Shen Y, Yao W, Chen D, Shen L. MiR-153-3p reduces extracellular matrix accumulation in high glucose-stimulated human glomerular mesangial cells via targeting PAQR3 in diabetic nephropathy. ENDOCRINOL DIAB NUTR 2021; 69:S2530-0164(21)00152-X. [PMID: 34247992 DOI: 10.1016/j.endinu.2021.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION This study aims to explore the effect and related molecular mechanism of miR-153-3p on high glucose-stimulated human glomerular mesangial cells. MATERIALS AND METHODS The quantitative real-time polymerase chain reaction (qPCR) assay was employed to check miR-153-3p and PAQR3 expression levels in diabetic nephropathy patients. (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) MTT assay was applied to investigate the effects of miR-153-3p transfection or PAQR3 administration on mesangial cell (MC) activity. ELISA assays were used to check the expression levels of extracellular matrix (ECM) related proteins. The bioinformatics method and dual-luciferase reporter assay were employed together to anticipate and check the targeting relationship between miR-153-3p and PAQR3. Western blot assays were applied to check the PAQR3, PI3K and AKT expression after miR-153-3p transfection or PAQR3 administration. RESULTS The expression level of miR-153-3p was lower in diabetic nephropathy patients, while the expression of PAQR3 was concomitantly higher. Upregulation of miR-153-3p can reduce MC proliferation and ECM accumulation. Further research indicated that miR-153-3p directly regulated PAQR3 expression via coupling with the 3'-UTR of PAQR3. Finally, the fact that miR-153-3p regulates the PI3K/AKT pathway by PAQR3 was confirmed. CONCLUSION MiR-153-3p regulates the PI3K/AKT pathway through PAQR3, thereby playing a role in regulating cell proliferation and ECM accumulation in high glucose-stimulated MCs.
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Affiliation(s)
- Hongli Yang
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Xingxing Fang
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Yan Shen
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Wubin Yao
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Dongmei Chen
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Lianglan Shen
- Department of Nephrology, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, China.
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14
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Shahcheraghi SH, Aljabali AAA, Al Zoubi MS, Mishra V, Charbe NB, Haggag YA, Shrivastava G, Almutary AG, Alnuqaydan AM, Barh D, Dua K, Chellappan DK, Gupta G, Lotfi M, Serrano-Aroca Á, Bahar B, Mishra YK, Takayama K, Panda PK, Bakshi HA, Tambuwala MM. Overview of key molecular and pharmacological targets for diabetes and associated diseases. Life Sci 2021; 278:119632. [PMID: 34019900 DOI: 10.1016/j.lfs.2021.119632] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/04/2021] [Accepted: 05/12/2021] [Indexed: 12/13/2022]
Abstract
Diabetes epidemiological quantities are demonstrating one of the most important communities' health worries. The essential diabetic difficulties are including cardiomyopathy, nephropathy, inflammation, and retinopathy. Despite developments in glucose decreasing treatments and drugs, these diabetic complications are still ineffectively reversed or prohibited. Several signaling and molecular pathways are vital targets in the new therapies of diabetes. This review assesses the newest researches about the key molecules and signaling pathways as targets of molecular pharmacology in diabetes and diseases related to it for better treatment based on molecular sciences. The disease is not cured by current pharmacological strategies for type 2 diabetes. While several drug combinations are accessible that can efficiently modulate glycemia and mitigate long-term complications, these agents do not reverse pathogenesis, and in practice, they are not established to modify the patient's specific molecular profiling. Therapeutic companies have benefited from human genetics. Genome exploration, which is agnostic to the information that exists, has revealed tens of loci that impact glycemic modulation. The physiological report has begun to examine subtypes of diseases, illustrate heterogeneity and propose biochemical therapeutic pathways.
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Affiliation(s)
- Seyed Hossein Shahcheraghi
- Infectious Diseases Research Center, Shahid Sadoughi Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran; Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Alaa A A Aljabali
- Department of Pharmaceutics & Pharmaceutical Technology, Yarmouk University, Irbid, Jordan
| | - Mazhar S Al Zoubi
- Yarmouk University, Faculty of Medicine, Department of Basic Medical Sciences, Irbid, Jordan
| | - Vijay Mishra
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Nitin B Charbe
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, Kingsville, TX 78363, USA
| | - Yusuf A Haggag
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | | | - Abdulmajeed G Almutary
- Department of Medical Biotechnology, College of Applied Medical Sciences, Qassim University, Saudi Arabia
| | - Abdullah M Alnuqaydan
- Department of Medical Biotechnology, College of Applied Medical Sciences, Qassim University, Saudi Arabia
| | - Debmalya Barh
- Centre for Genomics and Applied Gene Technology, Institute of Integrative Omics and Applied, India
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Dinesh K Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Mahal Road, Jagatpura, Jaipur, India
| | - Marzieh Lotfi
- Abortion Research Center, Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab, Translational Research Centre San Alberto Magno, Catholic University of Valencia San Vicente Mártir, C/Guillem de Castro 94, 46001 Valencia, Spain
| | - Bojlul Bahar
- Nutrition Sciences and Applied Food Safety Studies, Research Centre for Global Development, School of Sport & Health Sciences, University of Central Lancashire, Preston, PR1 2HE, UK
| | - Yogendra Kumar Mishra
- University of Southern Denmark, Mads Clausen Institute, NanoSYD, Alsion 2, 6400 Sønderborg, Denmark
| | - Kazuo Takayama
- Center for IPS Cell Research and Application, Kyoto University, Kyoto, 606-8397, Japan
| | - Pritam Kumar Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
| | - Hamid A Bakshi
- School of Pharmacy & Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom
| | - Murtaza M Tambuwala
- School of Pharmacy & Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom.
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15
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Li Y, Pan Y, Cao S, Sasaki K, Wang Y, Niu A, Fan X, Wang S, Zhang MZ, Harris RC. Podocyte EGFR Inhibits Autophagy Through Upregulation of Rubicon in Type 2 Diabetic Nephropathy. Diabetes 2021; 70:562-576. [PMID: 33239448 PMCID: PMC7881855 DOI: 10.2337/db20-0660] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 11/17/2020] [Indexed: 02/06/2023]
Abstract
Renal epidermal growth factor receptor (EGFR) signaling is activated in models of diabetic nephropathy (DN), and inhibition of the EGFR signaling pathway protects against the development of DN. We have now determined that in cultured podocytes, high glucose led to increases in activation of EGFR signaling but decreases in autophagy activity as indicated by decreased beclin-1 and inhibition of LC3B autophagosome formation as well as increased rubicon (an autophagy inhibitor) and SQSTM1 (autophagy substrate). Either genetic (small interfering [si]EGFR) or pharmacologic (AG1478) inhibition of EGFR signaling attenuated the decreased autophagy activity. In addition, rubicon siRNA knockdown prevented high glucose-induced inhibition of autophagy in podocytes. We further examined whether selective EGFR deletion in podocytes affected the progression of DN in type 2 diabetes. Selective podocyte EGFR deletion had no effect on body weight or fasting blood sugars in either db/db mice or nos3 -/-; db/db mice, a model of accelerated type 2 DN. However selective podocyte EGFR deletion led to relative podocyte preservation and marked reduction in albuminuria and glomerulosclerosis, renal proinflammatory cytokine/chemokine expression, and decreased profibrotic and fibrotic components in nos3 -/-; db/db mice. Podocyte EGFR deletion led to decreased podocyte expression of rubicon, in association with increased podocyte autophagy activity. Therefore, activation of EGFR signaling in podocytes contributes to progression of DN at least in part by increasing rubicon expression, leading to subsequent autophagy inhibition and podocyte injury.
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Affiliation(s)
- Yan Li
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
- Division of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Pan
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
- Division of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shirong Cao
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Kensuke Sasaki
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Yinqiu Wang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Aolei Niu
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Xiaofeng Fan
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Suwan Wang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Ming-Zhi Zhang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Raymond C Harris
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
- Department of Veterans Affairs, Nashville, TN
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16
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Shati AA, Alfaifi MY. Salidroside protects against diabetes mellitus-induced kidney injury and renal fibrosis by attenuating TGF-β1 and Wnt1/3a/β-catenin signalling. Clin Exp Pharmacol Physiol 2020; 47:1692-1704. [PMID: 32472701 DOI: 10.1111/1440-1681.13355] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/06/2020] [Accepted: 05/17/2020] [Indexed: 01/09/2023]
Abstract
This study evaluated if the nephroprotective effect of Salidroside in type 1 diabetes mellitus (T1DM) involves modulation of Wnt/β-catenin signalling pathways. Control or Streptozotocin (STZ, 50 mg/kg, iv)-induced T1DM adult male Wister rats were treated with the vehicle and Salidroside (100 mg/kg, orally) for 8 weeks daily. As compared to T1DM-induced rats, Salidroside improved kidney structure, reduced urinary protein and albumin level, increased creatinine clearance, and suppressed renal fibrosis. It also decreased mRNA and protein levels of Wnt1, Wnt3, and TGF-β1, phosphorylation of Smad-3, total and nuclear levels of β-catenin, and levels and activities of cleaved caspase-3. Concomitantly, Salidroside significantly increased the levels of p-β-catenin (Ser33/37 /Thr41 ) and suppressed protein levels of Axin-2, fibronectin, and, mRNA and protein levels of collagen IIIa, the main targets of β-catenin. In both control and T1DM rats, Salidroside significantly lowered fasting glucose levels and reduced renal levels of reactive oxygen species (ROS) p-and GS3Kβ (Ser9) but significantly increased levels of SOD and GSH. In conclusion, Salidroside protected the kidney of rats against T1DM-induced injury and fibrosis by activating GS3Kβ-induced inhibition of Wnt1/Wnt3a β-catenin. This was associated with hypoglycaemic and antioxidant effects.
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Affiliation(s)
- Ali A Shati
- Department of Biology, College of Science, King Khalid University (KKU), Abha, Saudi Arabia
| | - Mohammad Y Alfaifi
- Department of Biology, College of Science, King Khalid University (KKU), Abha, Saudi Arabia
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17
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Guo L, Tan K, Luo Q, Bai X. Dihydromyricetin promotes autophagy and attenuates renal interstitial fibrosis by regulating miR-155-5p/PTEN signaling in diabetic nephropathy. Bosn J Basic Med Sci 2020; 20:372-380. [PMID: 31668144 PMCID: PMC7416184 DOI: 10.17305/bjbms.2019.4410] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 09/17/2019] [Indexed: 12/19/2022] Open
Abstract
Diabetic nephropathy (DN) is the most common complication of diabetes and is prone to kidney failure. Dihydromyricetin (DHM) has been reported to have a variety of pharmacological activities. This study aims to explore the effect of DHM on DN and the underlying molecular mechanism. An in vivo DN rat model was established. The degree of renal interstitial fibrosis (RIF) was detected by hematoxylin-eosin (HE) staining, Masson's trichrome staining, and immunohistochemistry (IHC). In vitro, NRK-52E cells were divided into four groups: normal glucose (NG), high glucose (HG), HG+DHM, and HG+rapamycin (autophagy inhibitor). The levels of autophagy- and fibrosis-related proteins were analyzed by western blotting. The expression of miR-155-5p and phosphatase and tensin homolog deleted on chromosome ten (PTEN) and their relationship were assessed by quantitative reverse transcription (qRT)-PCR and dual luciferase reporter gene assay. Our results showed that RIF was increased in DN rat model and in HG-induced NRK-52E cells. DHM treatment attenuated the increased RIF and also increased autophagy. MiR-155-5p expression was increased, while PTEN expression was decreased in DN rat and cell model, and DHM reversed both effects. Dual luciferase assay showed that PTEN was the target gene of miR-155-5p. DHM inhibited HG-induced fibrosis and promoted autophagy by inhibiting miR-155-5p expression in NRK-52E cells. In addition, DHM promoted autophagy by inhibiting the PI3K/AKT/mTOR signaling pathway. In conclusion, DHM promotes autophagy and attenuates RIF by regulating the miR-155-5p/PTEN signaling and PI3K/AKT/mTOR signaling pathway in DN.
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Affiliation(s)
- Liming Guo
- Department of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Zhejiang, China
| | - Kuibi Tan
- Department of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Zhejiang, China
| | - Qun Luo
- Department of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Zhejiang, China
| | - Xu Bai
- Department of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Zhejiang, China
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18
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Ibrahim AAS, Morsy MM, Abouhashem SE, Aly O, Sabbah NA, Raafat N. Role of mesenchymal stem cells and their culture medium in alleviating kidney injury in rats diabetic nephropathy. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2020. [DOI: 10.1186/s43042-020-00064-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Abstract
Background
Diabetic nephropathy (DN) is considered as one of the most serious complications resulting from diabetes mellitus and end-stage of renal failure globally. Up to 40% of diabetic patients will develop DN. The involvement of mesenchymal stem cells (MSCs) in diabetic renal lesions management has been established in many animal models of DN. The aim is to evaluate the capability of MSCs and their culture medium (CM) to alleviate DN in streptozotocin (STZ)-induced diabetic rat model. Female albino rats were made diabetic and were further categorized into 4 subgroups of 15 each: DN group, DN group received fibroblasts, MSCs group received one dose of 1 × 106 cells of MSCs, and CM group received one dose of 500 μl of CM. In all groups, the treatment was delivered by intravenous injection (IV) into the tail vein.
Results
MSCs insinuated themselves into the injured kidney as detected by CD44 expression. Biochemical and histological results showed that MSCs and/or CM effectively attenuated DN manifestations in rat model through their possible anti-inflammatory (tumor necrosis factor-α and transforming growth factor-β1 were decreased), anti-apoptotic (Bcl2 was increased while Bax and caspases were decreased), and anti-oxidant role (malondialdehyde was decreased while glutathione and catalase were increased).
Conclusion
These results provide a potential therapeutic tool for DN management through the administration of the CM from MSCs that ameliorates the effects of diabetes. It is also possible to treat DN using CM alone thus avoiding cell transplantation.
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19
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Pereira BP, do Valle GT, Salles BCC, Costa KCM, Ângelo ML, Torres LHL, Novaes RD, Ruginsk SG, Tirapelli CR, de Araújo Paula FB, Ceron CS. Pyrrolidine dithiocarbamate reduces alloxan-induced kidney damage by decreasing nox4, inducible nitric oxide synthase, and metalloproteinase-2. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1899-1910. [PMID: 32440769 DOI: 10.1007/s00210-020-01906-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/10/2020] [Indexed: 12/18/2022]
Abstract
We examined the effect of the NFκB inhibitor pyrrolidine-1-carbodithioic acid (PDTC) on inducible nitric oxide synthase (iNOS), matrix metalloproteinase-2 (MMP-2) activity, and oxidative and inflammatory kidney damage in alloxan-induced diabetes. Two weeks after diabetes induction (alloxan-130 mg/kg), control and diabetic rats received PDTC (100 mg/kg) or vehicle for 8 weeks. Body weight, glycemia, urea, and creatinine were measured. Kidney changes were measured in hematoxylin/eosin sections and ED1 by immunohistochemistry. Kidney thiobarbituric acid reactive substances (TBARS), superoxide anion (O2-), and nitrate/nitrite (NOx) levels, and catalase and superoxide dismutase (SOD) activities were analyzed. Also, kidney nox4 and iNOS expression, and NFkB nuclear translocation were measured by western blot, and MMP-2 by zymography. Glycemia and urea increased in alloxan rats, which were not modified by PDTC treatment. However, PDTC attenuated kidney structural alterations and macrophage infiltration in diabetic rats. While diabetes increased both TBARS and O2- levels, PDTC treatment reduced TBARS in diabetic and O2- in control kidneys. A decrease in NOx levels was found in diabetic kidneys, which was prevented by PDTC. Diabetes reduced catalase activity, and PDTC increased catalase and SOD activities in both control and diabetic kidneys. PDTC treatment reduced MMP-2 activity and iNOS and p65 NFκB nuclear expression found increased in diabetic kidneys. Our results show that the NFκB inhibitor PDTC reduces renal damage through reduction of Nox4, iNOS, macrophages, and MMP-2 in the alloxan-induced diabetic model. These findings suggest that PDTC inhibits alloxan kidney damage via antioxidative and anti-inflammatory mechanisms.
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Affiliation(s)
- Bruna Pinheiro Pereira
- Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais,, Brazil
| | - Gabriel Tavares do Valle
- Escola de Enfermagem de Ribeirão Preto (EERP), Universidade de São Paulo - USP, Sao Paulo, Brazil
| | - Bruno César Côrrea Salles
- Departamento de Análises Clínicas, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil
| | - Karla Cristinne Mancini Costa
- Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais,, Brazil
| | - Marilene Lopes Ângelo
- Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais,, Brazil
| | - Larissa Helena Lobo Torres
- Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais,, Brazil
| | - Rômulo Dias Novaes
- Departamento de Biologia Estrutural, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil
| | - Sílvia Graciela Ruginsk
- Departamento de Ciências Fisiológicas, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil
| | - Carlos Renato Tirapelli
- Escola de Enfermagem de Ribeirão Preto (EERP), Universidade de São Paulo - USP, Sao Paulo, Brazil
| | | | - Carla Speroni Ceron
- Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais,, Brazil.
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20
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Ashrafizadeh M, Rafiei H, Mohammadinejad R, Afshar EG, Farkhondeh T, Samarghandian S. Potential therapeutic effects of curcumin mediated by JAK/STAT signaling pathway: A review. Phytother Res 2020; 34:1745-1760. [PMID: 32157749 DOI: 10.1002/ptr.6642] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 01/11/2020] [Accepted: 01/31/2020] [Indexed: 12/11/2022]
Abstract
Curcumin is a naturally occurring nutraceutical compound with a number of therapeutic and biological activities such as antioxidant, anti-inflammatory, anti-diabetic, antitumor, and cardioprotective. This plant-derived chemical has demonstrated great potential in targeting various signaling pathways to exert its protective effects. Signal transducers and activator of transcription (STAT) is one of the molecular pathways involved in a variety of biological processes such as cell proliferation and cell apoptosis. Accumulating data demonstrates that the STAT pathway is an important target in treatment of a number of disorders, particularly cancer. Curcumin is capable of affecting STAT signaling pathway in induction of its therapeutic impacts. Curcumin is able to enhance the level of anti-inflammatory cytokines and improve inflammatory disorders such as colitis by targeting STAT signaling pathway. Furthermore, studies show that inhibition of JAK/STAT pathway by curcumin is involved in reduced migration and invasion of cancer cells. Curcumin normalizes the expression of JAK/STAT signaling pathway to exert anti-diabetic, renoprotective, and neuroprotective impacts. At the present review, we provide a comprehensive discussion about the effect of curcumin on JAK/STAT signaling pathway to direct further studies in this field.
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Affiliation(s)
- Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Hossein Rafiei
- Department of Biology, Faculty of Sciences, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Reza Mohammadinejad
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Elham G Afshar
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Tahereh Farkhondeh
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Saeed Samarghandian
- Healthy Ageing Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran.,Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran
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21
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Zhao C, Gao J, Li S, Liu Q, Hou X, Xing X, Wang D, Sun M, Wang S, Luo Y. Cyclin G2 regulates canonical Wnt signalling via interaction with Dapper1 to attenuate tubulointerstitial fibrosis in diabetic nephropathy. J Cell Mol Med 2020; 24:2749-2760. [PMID: 31978940 PMCID: PMC7077553 DOI: 10.1111/jcmm.14946] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 12/04/2019] [Accepted: 12/09/2019] [Indexed: 02/06/2023] Open
Abstract
Cyclin G2 (CCNG2) is an atypical cyclin that inhibits cell cycle progression and is often dysregulated in human cancers. Cyclin G2 in the occurrence and development of diabetic nephropathy (DN), one of the most severe diabetic complications, has not been fully identified. In this study, we investigated the function and regulatory mechanism of cyclin G2 in DN. In vivo studies revealed that a deficiency of cyclin G2 significantly increased albuminuria and promoted tubulointerstitial fibrosis in established DN. Cyclin G2 regulated the expression of fibrosis‐related proteins via the canonical Wnt signalling pathway in renal tubular epithelial cells. Moreover, the binding of cyclin G2 to Dapper1 (Dpr1/DACT1), a protein involved in Wnt signalling, decreased the phosphorylation of Dpr1 at Ser762 by casein kinase 1 (CK1) and suppressed the Wnt signalling pathway. These findings reveal that cyclin G2 can protect against renal injury and fibrosis associated with DN and, thus, is a new target for the prevention and treatment of diabetic complications.
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Affiliation(s)
- Chenyang Zhao
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Jinlan Gao
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Sen Li
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Qi Liu
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Xiaoyu Hou
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Xuesha Xing
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Danning Wang
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Manni Sun
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Shusen Wang
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
| | - Yang Luo
- The Research Center for Medical Genomics, Key Laboratory of Cell Biology, Ministry of Public Health, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, China
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22
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Kundu A, Richa S, Dey P, Kim KS, Son JY, Kim HR, Lee SY, Lee BH, Lee KY, Kacew S, Lee BM, Kim HS. Protective effect of EX-527 against high-fat diet-induced diabetic nephropathy in Zucker rats. Toxicol Appl Pharmacol 2020; 390:114899. [PMID: 31981641 DOI: 10.1016/j.taap.2020.114899] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 01/16/2020] [Accepted: 01/21/2020] [Indexed: 02/06/2023]
Abstract
High-fat diet (HFD)-induced obesity is implicated in diabetic nephropathy (DN). EX-527, a selective Sirtuin 1 (SIRT1) inhibitor, has multiple biological functions; however, its protective effect against DN is yet to be properly understood. This study was aimed to explore the protective effect of EX-527 against DN in HFD-induced diabetic Zucker (ZDF) rats. After 21 weeks of continually feeding HFD to the rats, the apparent characteristics of progressive DN were observed, which included an increase in kidney weight (~160%), hyperglycemia, oxidative stress, and inflammatory cytokines, and subsequent renal cell damage. However, the administration of EX-527 for 10 weeks significantly reduced the blood glucose concentration and kidney weight (~59%). Furthermore, EX-527 significantly reduced the serum concentration of transforming growth factor-β1 (49%), interleukin (IL)-1β (52%), and IL-6 in the HFD-fed rats. Overall, the antioxidant activities significantly increased, and oxidative damage to lipids or DNA was suppressed. Particularly, EX-527 significantly reduced blood urea nitrogen (81%), serum creatinine (71%), microalbumin (43%), and urinary excretion of protein-based biomarkers. Histopathological examination revealed expansion of the extracellular mesangial matrix and suppression of glomerulosclerosis following EX-527 administration. EX-527 downregulated the expression of α-SMA (~64%), TGF-β (25%), vimentin, α-tubulin, fibronectin, and collagen-1 in the kidneys of the HFD-fed rats. Additionally, EX-527 substantially reduced claudin-1 and SIRT1 expression, but increased the expression of SIRT3 in the kidneys of the HFD-fed rats. EX-527 also inhibited the growth factor receptors, including EGFR, PDGFR-β, and STAT3, which are responsible for the anti-fibrotic effect of SIRT-1. Therefore, the administration of EX-527 protects against HFD-induced DN.
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Affiliation(s)
- Amit Kundu
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea
| | - Sachan Richa
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea
| | - Prasanta Dey
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea
| | - Kyeong Seok Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea
| | - Ji Yeon Son
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea
| | - Hae Ri Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea
| | - Seok-Yong Lee
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea
| | - Byung-Hoon Lee
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Kwang Youl Lee
- College of Pharmacy & Research Institute of Drug Development, Chonnam National University, Gwangju, Republic of Korea
| | - Sam Kacew
- McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, ON, Canada
| | - Byung Mu Lee
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 440-746, Republic of Korea.
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23
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Protective effects of Croton hookeri on streptozotocin-induced diabetic nephropathy. Food Chem Toxicol 2019; 135:110873. [PMID: 31600566 DOI: 10.1016/j.fct.2019.110873] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 10/02/2019] [Accepted: 10/04/2019] [Indexed: 01/29/2023]
Abstract
In this study, the protective effects of Croton hookeri (CH) extract on renal injury were investigated in streptozotocin (STZ)-induced diabetic rats. Diabetes was induced by a single injection of STZ (45 mg/kg) to Sprague-Dawley rats. After 5 days, CH extract (200 mg/kg) was administered daily by oral gavage for 2 weeks. Administration of CH extracts significantly reduced blood glucose levels in STZ-induced diabetic rats. STZ-induced changes in total cholesterol, LDL, HDL, ALT, AST, BUN, and serum creatinine levels were significantly restored by treatment with CH extract. Abnormal levels of SOD, catalase, glutathione, and oxidized GSH (GSSG) in STZ-treated rats were also significantly recovered by CH extract treatment. CH extract markedly reduced the expression of collagen-1, fibronectin, and α-SMA in the kidney of STZ-induced diabetic rats. In particular, oxidative DNA damages, MDA, TGF-β, IL-1β, and IL-6 levels were significantly reduced in STZ-treated rats following treatment with CH extract, whereas IL-10 showed opposite trend. STZ-induced SIRT1, SIRT3 downregulation and cloudin-1 upregulation in the kidney were dramatically recovered by CH extract treatment. Our data suggest that CH extract protects against diabetic-induced nephropathy by inhibiting oxidative stress and inflammation. Therefore, it has potential as a food supplement to alleviate renal dysfunction caused by diabetes-induced nephropathy.
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Microparticles as Potential Mediators of High Glucose-Induced Renal Cell Injury. Biomolecules 2019; 9:biom9080348. [PMID: 31390845 PMCID: PMC6723350 DOI: 10.3390/biom9080348] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/31/2019] [Accepted: 08/04/2019] [Indexed: 12/18/2022] Open
Abstract
Diabetic nephropathy (DN) is the most common cause of chronic kidney disease worldwide. Activation of signaling pathways such as the mammalian target of rapamycin (mTOR), extracellular signal-regulated kinases (ERK), endoplasmic reticulum (ER) stress, transforming growth factor-beta (TGF-β), and epithelial-mesenchymal transition (EMT), are thought to play a significant role in the etiology of DN. Microparticles (MPs), the small membrane vesicles containing bioactive signals shed by cells upon activation or during apoptosis, are elevated in diabetes and were identified as biomarkers in DN. However, their exact role in the pathophysiology of DN remains unclear. Here, we examined the effect of MPs shed from renal proximal tubular cells (RPTCs) exposed to high glucose conditions on naïve RPTCs in vitro. Our results showed significant increases in the levels of phosphorylated forms of 4E-binding protein 1 and ERK1/2 (the downstream targets of mTOR and ERK pathways), phosphorylated-eIF2α (an ER stress marker), alpha smooth muscle actin (an EMT marker), and phosphorylated-SMAD2 and nuclear translocation of SMAD4 (markers of TGF-β signaling). Together, our findings indicate that MPs activate key signaling pathways in RPTCs under high glucose conditions. Pharmacological interventions to inhibit shedding of MPs from RPTCs might serve as an effective strategy to prevent the progression of DN.
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Hydrohydroalcoholic Extract of Z. officinale Improves STZ-Induced Diabetic Nephropathy in Rats by Reduction of NF-κB Activation. Jundishapur J Nat Pharm Prod 2019. [DOI: 10.5812/jjnpp.55063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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26
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Grange C, Tritta S, Tapparo M, Cedrino M, Tetta C, Camussi G, Brizzi MF. Stem cell-derived extracellular vesicles inhibit and revert fibrosis progression in a mouse model of diabetic nephropathy. Sci Rep 2019; 9:4468. [PMID: 30872726 PMCID: PMC6418239 DOI: 10.1038/s41598-019-41100-9] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 02/21/2019] [Indexed: 12/21/2022] Open
Abstract
Extracellular vesicles (EVs) that are derived from mesenchymal stromal cells (MSCs) have been shown to reprogram injured cells by activating regenerative processes. We herein investigate the potential therapeutic effect of EVs, shed by human bone marrow MSCs and by human liver stem-like cells (HLSCs), on the progression and reversion of fibrosis in a mouse model of diabetic nephropathy, as induced by streptozotocin. After the development of nephropathy, stem cell-derived EVs were administered weekly to diabetic mice for four weeks. The stem cell-derived EV treatment, but not the fibroblast EV treatment that was used as a control, significantly ameliorated functional parameters, such as albumin/creatinine excretion, plasma creatinine and blood urea nitrogen, which are altered in diabetic mice. Moreover, the renal fibrosis that develops during diabetic nephropathy progression was significantly inhibited in stem cell EV-treated animals. A correlation was found between the down regulation of several pro-fibrotic genes in renal tissues and the anti-fibrotic effect of HLSC and MSC EVs. A comparative analysis of HLSC and MSC EV miRNA content highlighted some common and some specific patterns of miRNAs that target predicted pro-fibrotic genes. In conclusion, stem cell-derived EVs inhibit fibrosis and prevent its progression in a model of diabetes-induced chronic kidney injury.
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Affiliation(s)
- Cristina Grange
- Department of Medical Sciences, University of Turin, Turin, Italy.,Molecular Biotechnology Centre, University of Turin, Turin, Italy
| | - Stefania Tritta
- Molecular Biotechnology Centre, University of Turin, Turin, Italy
| | - Marta Tapparo
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Massimo Cedrino
- Molecular Biotechnology Centre, University of Turin, Turin, Italy
| | | | - Giovanni Camussi
- Department of Medical Sciences, University of Turin, Turin, Italy. .,Molecular Biotechnology Centre, University of Turin, Turin, Italy. .,2i3T Società per la gestione dell'incubatore di imprese e per il trasferimento tecnologico Scarl, University of Turin, Turin, Italy.
| | - Maria Felice Brizzi
- Department of Medical Sciences, University of Turin, Turin, Italy. .,Molecular Biotechnology Centre, University of Turin, Turin, Italy. .,2i3T Società per la gestione dell'incubatore di imprese e per il trasferimento tecnologico Scarl, University of Turin, Turin, Italy.
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27
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Chowdhury S, Ghosh S, Das AK, Sil PC. Ferulic Acid Protects Hyperglycemia-Induced Kidney Damage by Regulating Oxidative Insult, Inflammation and Autophagy. Front Pharmacol 2019; 10:27. [PMID: 30804780 PMCID: PMC6371841 DOI: 10.3389/fphar.2019.00027] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 01/10/2019] [Indexed: 12/31/2022] Open
Abstract
Oxidative insult, inflammation, apoptosis and autophagy play a pivotal role in the etiology of diabetic nephropathy, a global health concern. Ferulic acid, a phytochemical, is reported to protect against varied diseased conditions. However, the ameliorative role and mechanisms of ferulic acid in averting STZ-mediated nephrotoxicity largely remains unknown. For in vivo study, a single intraperitoneal injection of streptozotocin (50 mg kg-1 body wt.) was administered in experimental rats to induce diabetes. The diabetic rats exhibited a rise in blood glucose level as well as kidney to body weight ratio, a decrease in serum insulin level, severe kidney tissue damage and dysfunction. Elevation of intracellular ROS level, altered mitochondrial membrane potential and cellular redox balance impairment shown the participation of oxidative stress in hyperglycemia-triggered renal injury. Treatment with ferulic acid (50 mg kg-1 body wt., orally for 8 weeks), post-diabetic induction, could markedly ameliorate kidney injury, renal cell apoptosis, inflammation and defective autophagy in the kidneys. The underlying mechanism for such protection involved the modulation of AGEs, MAPKs (p38, JNK, and ERK 1/2), NF-κB mediated inflammatory pathways, mitochondria-dependent and -independent apoptosis as well as autophagy induction. In cultured NRK-52E cells, ferulic acid (at an optimum dose of 75 μM) could counter excessive ROS generation, induce autophagy and inhibit apoptotic death of cells under high glucose environment. Blockade of autophagy could significantly eradicate the protective effect of ferulic acid in high glucose-mediated cell death. Together, the study confirmed that ferulic acid, exhibiting hypoglycemic, antioxidant, anti-inflammatory, anti-apoptotic activities and role in autophagy, could circumvent oxidative stress-mediated renal cell damage.
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Affiliation(s)
| | - Sumit Ghosh
- Division of Molecular Medicine, Bose Institute, Kolkata, India
| | | | - Parames C Sil
- Division of Molecular Medicine, Bose Institute, Kolkata, India
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28
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Pham VM, Matsumura S, Katano T, Funatsu N, Ito S. Diabetic neuropathy research: from mouse models to targets for treatment. Neural Regen Res 2019; 14:1870-1879. [PMID: 31290436 PMCID: PMC6676867 DOI: 10.4103/1673-5374.259603] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Diabetic neuropathy is one of the most serious complications of diabetes, and its increase shows no sign of stopping. Furthermore, current clinical treatments do not yet approach the best effectiveness. Thus, the development of better strategies for treating diabetic neuropathy is an urgent matter. In this review, we first discuss the advantages and disadvantages of some major mouse models of diabetic neuropathy and then address the targets for mechanism-based treatment that have been studied. We also introduce our studies on each part. Using stem cells as a source of neurotrophic factors to target extrinsic factors of diabetic neuropathy, we found that they present a promising treatment.
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Affiliation(s)
- Vuong M Pham
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Osaka, Japan; Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, Singapore
| | - Shinji Matsumura
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Osaka, Japan
| | - Tayo Katano
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Osaka, Japan
| | - Nobuo Funatsu
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Osaka, Japan
| | - Seiji Ito
- Department of Medical Chemistry, Kansai Medical University, Hirakata; Department of Anesthesiology, Osaka Medical College, Takatsuki, Osaka, Japan
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29
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Chen X, Yang Y, Liu C, Chen Z, Wang D. Astragaloside IV ameliorates high glucose‑induced renal tubular epithelial‑mesenchymal transition by blocking mTORC1/p70S6K signaling in HK‑2 cells. Int J Mol Med 2018; 43:709-716. [PMID: 30483732 PMCID: PMC6317658 DOI: 10.3892/ijmm.2018.3999] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/21/2018] [Indexed: 12/13/2022] Open
Abstract
Astragaloside IV (AST) is the major active saponin in Astragalus membranaceus and, reportedly, has a variety of pharmacological activities. However, the potential of AST to ameliorate high glucose‑mediated renal tubular epithelial‑mesenchymal transition (EMT) remains undetermined. The aim of the present research was to explore the effect and mechanism of AST in EMT of renal tubular epithelial cells, as an underlying mechanism of renal fibrosis and a vital feature involved in diabetic nephropathy. The effect of AST on the EMT of renal tubular epithelial cells (HK‑2) stimulated by high glucose was investigated and it was attempted to elucidate the potential underlying mechanism. The expression of E‑cadherin and α‑smooth muscle actin were determined by western blotting and immunofluorescence assays. The expression of the mammalian target of rapamycin complex 1 (mTORC1)/ ribosomal protein S6 kinase β‑1 (p70S6K) signaling pathway and protein levels of four transcriptional factors (snail, slug, twist and zinc finger E‑box‑binding homeobox 1) were also determined by western blotting. Additionally, extracellular matrix components, including fibronectin (FN) and collagen type IV (Col IV) were detected by ELISA. The results suggested that the EMT of HK‑2 cells and the mTORC1/p70S6K pathway were activated by high glucose. The expression of snail and twist in HK‑2 cells was elevated by high glucose. Furthermore, extracellular matrix components, FN and Col IV, were increased in HK‑2 cells cultured with high glucose. In turn, treatment with AST reduced EMT features in HK‑2 cells, inhibited mTORC1/p70S6K pathway activation, downregulated expression of snail and twist, and reduced secretion of FN and Col IV. In summary, the findings suggested that AST ameliorates high glucose‑mediated renal tubular EMT by blocking the mTORC1/p70S6K signaling pathway in HK‑2 cells.
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Affiliation(s)
- Xiao Chen
- Department of Pharmacy, The People's Hospital of Jiangyin, Jiangyin, Jiangsu 214400, P.R. China
| | - Yang Yang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Chenxu Liu
- Department of Pharmacy, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
| | - Zhigao Chen
- Department of Pharmacy, The People's Hospital of Jiangyin, Jiangyin, Jiangsu 214400, P.R. China
| | - Dongdong Wang
- Department of Pharmacy, Children's Hospital of Fudan University, Shanghai 201102, P.R. China
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30
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Lu Q, Wang WW, Zhang MZ, Ma ZX, Qiu XR, Shen M, Yin XX. ROS induces epithelial-mesenchymal transition via the TGF-β1/PI3K/Akt/mTOR pathway in diabetic nephropathy. Exp Ther Med 2018; 17:835-846. [PMID: 30651870 DOI: 10.3892/etm.2018.7014] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 03/09/2018] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress has been reported to serve an important role in the development and progression of diabetic nephropathy (DN). Epithelial-mesenchymal transition (EMT) of renal tubular epithelial cells promotes renal fibrosis in DN, while the mechanism of reactive oxygen species (ROS)-mediated EMT is not fully understood. The aim of the present study was to investigate the effect of high glucose-induced ROS on the activation of the transforming growth factor (TGF)-β1/phosphoinositide 3 kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway in a normal rat kidney tubular epithelial cell line (NRK-52E) and rats with type 1 diabetes. In vitro, high glucose-stimulated ROS production resulted in increased TGF-β1 expression as well as an increase in the Akt and mTOR phosphorylation ratio, resulting in EMT. When cells were pre-treated with ROS inhibitors, changes in TGF-β1, Akt and mTOR were significantly ameliorated. In vivo, diabetic rats experienced a significant decline in renal function and severe renal fibrosis compared with control rats at 8 weeks following streptozocin injection. Levels of malondialdehyde and TGF-β1/PI3K/Akt/mTOR pathway activation were increased in the renal cortex of rats with diabetes compared with the control rats. Furthermore, renal fibrosis was further aggravated in DN compared with the control rats. The results of the present study suggest that ROS serves an important role in mediating high glucose-induced EMT and inhibits activation of the TGF-β1/PI3K/Akt/mTOR pathway. ROS may therefore have potential as a treatment approach to prevent renal fibrosis in DN.
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Affiliation(s)
- Qian Lu
- Department of Pharmacy, Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Wen-Wen Wang
- Department of Pharmacy, Wuxi Higher Health Vocational Technology School, Wuxi, Jiangsu 214000, P.R. China
| | - Ming-Zhu Zhang
- Deparment of Clinical Pharmacy, Changzhou Fourth People's Hospital, Changzhou, Jiangsu 213000, P.R. China
| | - Zhong-Xuan Ma
- Department of Pharmacy, Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Xin-Ran Qiu
- Department of Pharmacy, Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Mengli Shen
- Department of Pharmacy, Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Xiao-Xing Yin
- Department of Pharmacy, Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
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31
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Cyclin G2 Suppresses Glomerulosclerosis by Regulating Canonical Wnt Signalling. BIOMED RESEARCH INTERNATIONAL 2018; 2018:6938482. [PMID: 30420966 PMCID: PMC6215590 DOI: 10.1155/2018/6938482] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/30/2018] [Indexed: 12/29/2022]
Abstract
Recent data has shown that cyclin G2 (CCNG2) is an atypical cyclin that inhibits cell cycle progression and is often dysregulated in human cancers. The involvement of cyclin G2 in the occurrence and development of diabetic nephropathy (DN) has not been determined. In the present study, we conducted cyclin G2 knockout studies to determine whether this protein regulates glomerulosclerosis in DN mice. We found that cyclin G2 regulated the expression of renal glomerulosclerosis-related proteins via the canonical Wnt signalling pathway in glomerular mesangial cells. A cyclin G2 deficiency resulted in more severe renal injury in DN mice. These findings provided new insight into the pathogenesis of DN, revealing that cyclin G2 has a protective role in glomerulosclerosis and is a potential new target for the prevention and treatment of DN.
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32
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LncRNA-NR_033515 promotes proliferation, fibrogenesis and epithelial-to-mesenchymal transition by targeting miR-743b-5p in diabetic nephropathy. Biomed Pharmacother 2018; 106:543-552. [DOI: 10.1016/j.biopha.2018.06.104] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 06/17/2018] [Accepted: 06/18/2018] [Indexed: 01/10/2023] Open
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Aberrant activation of Notch-1 signaling inhibits podocyte restoration after islet transplantation in a rat model of diabetic nephropathy. Cell Death Dis 2018; 9:950. [PMID: 30237561 PMCID: PMC6148077 DOI: 10.1038/s41419-018-0985-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/07/2018] [Accepted: 08/20/2018] [Indexed: 12/22/2022]
Abstract
Signaling abnormalities play important roles during podocyte injury and have been indicated as crucial events for triggering many glomerular diseases. There is emerging evidence demonstrating significant improvements in preventing renal injury and restoring podocytes after islet transplantation. However, whether signaling abnormalities affect the therapeutic efficacy of islet transplantation remain unclear. This study was established to investigate the impact of Notch-1 signaling activation on renal injury and podocyte restoration after islet transplantation. Experiments were performed in vivo and in vitro under conditions of diabetic nephropathy and high-glucose medium, respectively. Podocyte injury in vitro was induced by high-glucose concentration, and expression levels of genes associated with the Notch-1 pathway were also regulated by Jagged-1/FC and N-[N-(3,5-Difluorophenacetyl)-L-alanyl]- S-phenylglycine t-butyl ester (DAPT). Podocytes were co-cultured with islets to investigate the protective effect of islets in high-glucose conditions. Histopathological staining and transmission electron microscopy were performed to assess pathological changes in podocytes in glomeruli. The results from this study showed that Notch-1 signaling in podocytes was significantly decreased by functional islet cells in vivo and in vitro. Compared with the co-cultured group and transplanted group, highly activated Notch-1 signaling significantly moderated the effect of islets in affecting podocyte restoration and renal injury. Renal damage and podocyte injury were alleviated after DAPT treatment. Furthermore, the balance between apoptosis and autophagy was diverse under different treatments. All the data in this study showed that highly activated Notch-1 signaling could affect the therapeutic efficacy of islet transplantation on renal injury and podocyte restoration in high-glucose conditions. The balance between apoptosis and autophagy was also closely associated with the degree of podocyte restoration. This finding may suggest that the in vivo microenvironment plays a critical role in podocyte restoration after islet transplantation, which provides a promising and individual assessment and targeting treatment for different diabetic nephropathy patients after islet transplantation into the future.
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34
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Yoon S, Rossi JJ. Aptamers: Uptake mechanisms and intracellular applications. Adv Drug Deliv Rev 2018; 134:22-35. [PMID: 29981799 PMCID: PMC7126894 DOI: 10.1016/j.addr.2018.07.003] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 06/06/2018] [Accepted: 07/04/2018] [Indexed: 01/10/2023]
Abstract
The structural flexibility and small size of aptamers enable precise recognition of cellular elements for imaging and therapeutic applications. The process by which aptamers are taken into cells depends on their targets but is typically clathrin-mediated endocytosis or macropinocytosis. After internalization, most aptamers are transported to endosomes, lysosomes, endoplasmic reticulum, Golgi apparatus, and occasionally mitochondria and autophagosomes. Intracellular aptamers, or “intramers,” have versatile functions ranging from intracellular RNA imaging, gene regulation, and therapeutics to allosteric modulation, which we discuss in this review. Immune responses to therapeutic aptamers and the effects of G-quadruplex structure on aptamer function are also discussed.
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Huang M, Zhang J, Xu H, Ding T, Tang D, Yuan Q, Tao L, Ye Z. The TGFβ-ERK pathway contributes to Notch3 upregulation in the renal tubular epithelial cells of patients with obstructive nephropathy. Cell Signal 2018; 51:139-151. [PMID: 30081092 DOI: 10.1016/j.cellsig.2018.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 01/01/2023]
Abstract
Renal interstitial fibrosis is a common renal injury resulted from a variety of chronic kidney conditions and an array of factors. We report here that Notch3 is a potential contributor. In comparison to 6 healthy individuals, a robust elevation of Notch3 expression was observed in the renal tubular epithelial cells of 18 patients with obstructive nephropathy. In a rat unilateral ureteral obstruction (UUO) model which mimics the human disease, Notch3 upregulation closely followed the course of renal injury, renal fibrosis, TGFβ expression, and alpha-smooth muscle actin (α-SMA) expression, suggesting a role of Notch3 in promoting tubulointerstitial fibrosis. This possibility was supported by the observation that TGFβ, the major renal fibrogenic cytokine, stimulated Notch3 expression in human proximal tubule epithelial HK-2 cells. TGFβ enhanced the activation of ERK, p38, but not JNK MAP kinases in HK-2 cells. While inhibition of p38 activation using SB203580 did not affect TGFβ-induced Notch3 expression, inhibition of ERK activation with a MEK1 inhibitor PD98059 dramatically reduced the event. Furthermore, enforced ERK activation through overexpression of the constitutively active MEK1 mutant MEK1Q56P upregulated Notch3 expression in HK-2 cells, and PD98059 reduced ERK activation and Notch3 expression in HK-2 cells expressing MEK1Q56P. Collectively, we provide the first clinical evidence for Notch3 upregulation in patients with obstructive nephropathy; the upregulation is likely mediated through the TGFβ-ERK pathway. This study suggests that Notch3 upregulation contributes to renal injury caused by obstructive nephropathy, which could be prevented or delayed through ERK inhibition.
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Affiliation(s)
- Mei Huang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jin Zhang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Department of Nephrology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, China
| | - Hui Xu
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
| | - Ting Ding
- Department of Nephrology, The Second Affiliated Hospital of University of South China, Hengyang, Hunan 421001, China
| | - Damu Tang
- Division of Nephrology, Department of Medicine, McMaster University, Canada; The Hamilton Center for Kidney Research, St. Joseph's Hospital, Hamilton, Ontario, Canada
| | - Qiongjing Yuan
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Lijian Tao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; State Key Laboratory of Medical Genetics of China, Central South University, Changsha, Hunan 410008, China
| | - Zunlong Ye
- 1717 Class, ChangJun High School of Changsha, Changsha, Hunan 410002, China
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FPS-ZM1 and valsartan combination protects better against glomerular filtration barrier damage in streptozotocin-induced diabetic rats. J Physiol Biochem 2018; 74:467-478. [PMID: 29948786 DOI: 10.1007/s13105-018-0640-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 06/01/2018] [Indexed: 12/18/2022]
Abstract
Despite the effectiveness of renin-angiotensin blockade in retarding diabetic nephropathy progression, a considerable number of patients still develop end-stage renal disease. The present investigation aims to evaluate the protective potential of FPS-ZM1, a selective inhibitor of receptor for advanced glycation end products (RAGE), alone and in combination with valsartan, an angiotensin receptor blocker, against glomerular injury parameters in streptozotocin-induced diabetic rats. FPS-ZM1 at 1 mg/kg (i.p.), valsartan at 100 mg/kg (p.o.), and their combination were administered for 4 weeks, starting 2 months after diabetes induction in rats. Tests for kidney function, glomerular filtration barrier, and podocyte slit diaphragm integrities were performed. Combined FPS-ZM1/valsartan attenuated diabetes-induced elevations in renal levels of RAGE and phosphorylated NF-κB p65 subunit. It ameliorated glomerular injury due to diabetes by increasing glomerular nephrin and synaptopodin expressions, mitigating renal integrin-linked kinase (ILK) levels, and lowering urinary albumin, collagen type IV, and podocin excretions. FPS-ZM1 also improved renal function as demonstrated by decreasing levels of serum cystatin C. Additionally, the combination also alleviated indices of renal inflammation as revealed by decreased renal monocyte chemoattractant protein 1 (MCP-1) and chemokine (C-X-C motif) ligand 12 (CXCL12) expressions, F4/80-positive macrophages, glomerular TUNEL-positive cells, and urinary alpha-1-acid glycoprotein (AGP) levels. These findings underline the benefits of FPS-ZM1 added to valsartan in alleviating renal glomerular injury evoked by diabetes in streptozotocin rats and suggest FPS-ZM1 as a new potential adjunct to the conventional renin-angiotensin blockade.
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Shukla R, Banerjee S, Tripathi YB. Pueraria tuberosa extract inhibits iNOS and IL-6 through suppression of PKC-α and NF-kB pathway in diabetes-induced nephropathy. ACTA ACUST UNITED AC 2018; 70:1102-1112. [PMID: 29770444 DOI: 10.1111/jphp.12931] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 04/16/2018] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Inflammation plays an important role in the pathogenesis of diabetic nephropathy (DN). The aim of this study was to explore the anti-inflammatory role of PTY-2r (extracted from Pueraria tuberosa), on streptozotocin (STZ)-induced DN rats. METHODS Diabetes was induced by intraperitoneal injection of STZ (55mg/kg) in rats. After 60 days, the rats were randomly divided into three groups (n = 6/each group), namely DN control group 2, DN rats treated with PTY-2r at dose of 100 mg/100 g, group 3 and 50 mg/100 g, group 4, p.o for 20 days. The normal rats were chosen as a normal control (NC) group 1. KEY FINDINGS In DN rats, the expression of iNOS and inflammatory cytokines (IL-6 and TNF-α) was significantly increased. Raised expression of PKC-α was also found. As NF-kB is the main transcription factor for the inflammatory response-mediated progression of DN, variation in NF-kB expression and its activated phosphorylated derivative (pNF-kB) were also evaluated and increase in expression was obtained in the kidney of DN rats. PTY-2r treatment significantly reversed these changes in dose-dependent manner. CONCLUSIONS This study suggested that the nephroprotective effect of PTY-2r is possibly due to downregulation of PKC-α and NF-kB pathway and normalizing the expression of inflammatory cytokines and iNOS in the kidney of DN rats.
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Affiliation(s)
- Rashmi Shukla
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Somanshu Banerjee
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Yamini B Tripathi
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
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Zhang M, Yan Z, Bu L, An C, Wang D, Liu X, Zhang J, Yang W, Deng B, Xie J, Zhang B. Rapeseed protein-derived antioxidant peptide RAP alleviates renal fibrosis through MAPK/NF-κB signaling pathways in diabetic nephropathy. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:1255-1268. [PMID: 29795979 PMCID: PMC5958891 DOI: 10.2147/dddt.s162288] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Introduction Kidney fibrosis is the main pathologic change in diabetic nephropathy (DN), which is the major cause of end-stage renal disease. Current therapeutic strategies slow down but cannot reverse the progression of renal dysfunction in DN. Plant-derived bioactive peptides in foodstuffs are widely used in many fields because of their potential pharmaceutical and nutraceutical benefits. However, this type of peptide has not yet been studied in renal fibrosis of DN. Previous studies have indicated that the peptide YWDHNNPQIR (named RAP), a natural peptide derived from rapeseed protein, has an antioxidative stress effect. The oxidative stress is believed to be associated with DN. The aim of this study was to evaluate the pharmacologic effects of RAP against renal fibrosis of DN and high glucose (HG)-induced mesangial dysfunction. Materials and methods Diabetes was induced by streptozotocin and high-fat diet in C57BL/6 mice and these mice were treated by subcutaneous injection of different doses of RAP (0.1 mg/kg and 0.5 mg/kg, every other day) or PBS for 12 weeks. Later, functional and histopathologic analyses were performed. Parallel experiments verifying the molecular mechanism by which RAP alleviates DN were carried out in HG-induced mesangial cells (MCs). Results RAP improved the renal function indices, including 24-h albuminuria, triglyceride, serum creatinine, and blood urea nitrogen levels, but did not lower blood glucose levels in DN mice. RAP also simultaneously attenuated extracellular matrix accumulation in DN mice and HG-induced MCs. Furthermore, RAP reduced HG-induced cell proliferation, but it showed no toxicity in MCs. Additionally, RAP inhibited the mitogen-activated protein kinase (MAPK) and nuclear factor κB (NF-κB) signaling pathways. Conclusion RAP can attenuate fibrosis in vivo and in vitro by antagonizing the MAPK and NF-κB pathways.
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Affiliation(s)
- Mingyan Zhang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zhibin Yan
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Lili Bu
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Chunmei An
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Dan Wang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xin Liu
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Jianfeng Zhang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Wenle Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Bochuan Deng
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Junqiu Xie
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Bangzhi Zhang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China.,Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
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Barman S, Pradeep SR, Srinivasan K. Zinc supplementation alleviates the progression of diabetic nephropathy by inhibiting the overexpression of oxidative-stress-mediated molecular markers in streptozotocin-induced experimental rats. J Nutr Biochem 2018; 54:113-129. [DOI: 10.1016/j.jnutbio.2017.11.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 11/04/2017] [Accepted: 11/14/2017] [Indexed: 01/06/2023]
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Um JE, Park JT, Nam BY, Lee JP, Jung JH, Kim Y, Kim S, Park J, Wu M, Han SH, Yoo TH, Kang SW. Periostin-binding DNA aptamer treatment attenuates renal fibrosis under diabetic conditions. Sci Rep 2017; 7:8490. [PMID: 28819200 PMCID: PMC5561139 DOI: 10.1038/s41598-017-09238-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 07/17/2017] [Indexed: 02/07/2023] Open
Abstract
Diabetic nephropathy, the major cause of chronic kidney disease, is associated with progressive renal fibrosis. Recently, accumulation of periostin, an extracellular matrix protein, was shown to augment renal fibrosis. Aptamers have higher binding affinities without developing the common side effects of antibodies. Thus, we evaluated the effect of periostin inhibition by an aptamer-based inhibitor on renal fibrosis under diabetic conditions. In vitro, transforming growth factor-β1 (TGF-β1) treatment significantly upregulated periostin, fibronectin, and type I collagen mRNA and protein expressions in inner medullary collecting duct (IMCD) cells. These increases were attenuated significantly in periostin-binding DNA aptamer (PA)-treated IMCD cells exposed to TGF-β1. In vivo, PA treatment attenuated the increased blood urea nitrogen levels in the diabetic mice significantly. Fibronectin and type I collagen mRNA and protein expressions increased significantly in the kidneys of diabetic mice: PA administration abrogated these increases significantly. Immunohistochemistry and Sirius Red staining also revealed that fibronectin expression was significantly higher and tubulointersititial fibrosis was significantly worse in diabetic mice kidneys compared with control mice. These changes were ameliorated by PA treatment. These findings suggested that inhibition of periostin using a DNA aptamer could be a potential therapeutic strategy against renal fibrosis in diabetic nephropathy.
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Affiliation(s)
- Jae Eun Um
- Severance Biomedical Science Institute, College of Medicine, Yonsei University, Seoul, Korea
| | - Jung Tak Park
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Bo Young Nam
- Severance Biomedical Science Institute, College of Medicine, Yonsei University, Seoul, Korea
| | - Jung Pyo Lee
- Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Jong Ha Jung
- Aptamer Sciences Inc., POSTECH Biotech Center, Pohang, Gyeongbuk, Korea
| | - Youndong Kim
- Aptamer Sciences Inc., POSTECH Biotech Center, Pohang, Gyeongbuk, Korea
| | - Seonghun Kim
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Jimin Park
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Meiyan Wu
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Seung Hyeok Han
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Tae-Hyun Yoo
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Shin-Wook Kang
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Brain Korea 21 PLUS, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea.
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Zhao D, Jia J, Shao H. miR-30e targets GLIPR-2 to modulate diabetic nephropathy: in vitro and in vivo experiments. J Mol Endocrinol 2017; 59:181-190. [PMID: 28733476 DOI: 10.1530/jme-17-0083] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/13/2017] [Indexed: 12/17/2022]
Abstract
The objectives of this study are to investigate the effect of miR-30e targeting GLIPR-2 on the pathological mechanism of DN. The renal tissues of db/db and db/m mice at different age of weeks were stained with PAS. qRT-PCR was applied to detect the expression of miR-30e and GLIPR-2, not only in the renal tissues of mice but also in the renal tubular epithelial cells (RTECs). By luciferase reporter gene assays, we found the 3'-UTR of the GLIPR-2 mRNA as a direct target of miR-30e. The RTECs cultured in high glucose were divided into blank control, NC, miR-30e mimics, miR-30e inhibitors, miR-30e inhibitor + si-GLIPR-2 and si-GLIPR-2 groups. MTT and flow cytometry were utilized to measure the proliferation and apoptosis of RTECs, while qRT-PCR and Western blot to detect the expression of GLIPR-2- and EMT-related factors. The following results were obtained: In the renal tissues of over 8-week-old db/db mice and the RTECs cultured for 6 h in high glucose, miR-30e was downexpressed while GLIPR-2 was upregulated in a time-dependent manner. Besides, overexpression of miR-30e and si-GLIPR-2 can not only greatly improve the proliferation of RTECs cultured in high glucose, but also downregulate the apoptosis rate of RTECs and the expressions of GLIPR-2, vimentin, α-SMA, Col-I and FN and upregulate E-cadherin. Moreover, si-GLIPR-2 can reverse the proliferation reduction, GLIPR-2 and EMT occurrence caused by the downexpression of miR-30e in RTECs. In conclusion, miR-30e is downregulated in DN, and the overexpression of miR-30e can inhibit GLIPR-2, promote the proliferation of RTECs and inhibit EMT, ultimately avoid leading to renal fibrosis in DN.
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Affiliation(s)
- Dong Zhao
- Department of NephrologyJining NO.1 People's Hospital, Jining, Shandong, People's Republic of China
| | - Jinhua Jia
- Department of NephrologyAnkang Hospital of Traditional Chinese Medicine, Ankang, Shaanxi, People's Republic of China
| | - Hong Shao
- Department of NephrologyJining NO.1 People's Hospital, Jining, Shandong, People's Republic of China
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Dai H, Liu Q, Liu B. Research Progress on Mechanism of Podocyte Depletion in Diabetic Nephropathy. J Diabetes Res 2017; 2017:2615286. [PMID: 28791309 PMCID: PMC5534294 DOI: 10.1155/2017/2615286] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/05/2017] [Accepted: 03/05/2017] [Indexed: 12/13/2022] Open
Abstract
Diabetic nephropathy (DN) together with glomerular hyperfiltration has been implicated in the development of diabetic microangiopathy in the initial stage of diabetic diseases. Increased amounts of urinary protein in DN may be associated with functional and morphological alterations of podocyte, mainly including podocyte hypertrophy, epithelial-mesenchymal transdifferentiation (EMT), podocyte detachment, and podocyte apoptosis. Accumulating studies have revealed that disruption in multiple renal signaling pathways had been critical in the progression of these pathological damages, such as adenosine monophosphate-activated kinase signaling pathways (AMPK), wnt/β-catenin signaling pathways, endoplasmic reticulum stress-related signaling pathways, mammalian target of rapamycin (mTOR)/autophagy pathway, and Rho GTPases. In this review, we highlight new molecular insights underlying podocyte injury in the progression of DN, which offer new therapeutic targets to develop important renoprotective treatments for DN over the next decade.
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Affiliation(s)
- Haoran Dai
- Department of Nephrology, Shunyi Branch, Beijing Hospital of Traditional Chinese Medicine, Station East 5, Shunyi District, Beijing 101300, China
| | - Qingquan Liu
- Department of Nephrology, Shunyi Branch, Beijing Hospital of Traditional Chinese Medicine, Station East 5, Shunyi District, Beijing 101300, China
- Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, 23 Meishuguanhou Street, Dongcheng District, Beijing 100010, China
- *Qingquan Liu: and
| | - Baoli Liu
- Department of Nephrology, Shunyi Branch, Beijing Hospital of Traditional Chinese Medicine, Station East 5, Shunyi District, Beijing 101300, China
- Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, 23 Meishuguanhou Street, Dongcheng District, Beijing 100010, China
- *Baoli Liu:
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Oh HJ, Kato M, Deshpande S, Zhang E, Das S, Lanting L, Wang M, Natarajan R. Inhibition of the processing of miR-25 by HIPK2-Phosphorylated-MeCP2 induces NOX4 in early diabetic nephropathy. Sci Rep 2016; 6:38789. [PMID: 27941951 PMCID: PMC5150532 DOI: 10.1038/srep38789] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 11/11/2016] [Indexed: 12/19/2022] Open
Abstract
Phosphorylated methyl-CpG binding protein2 (p-MeCP2) suppresses the processing of several microRNAs (miRNAs). Homeo-domain interacting protein kinase2 (HIPK2) phosphorylates MeCP2, a known transcriptional repressor. However, it is not known if MeCP2 and HIPK2 are involved in processing of miRNAs implicated in diabetic nephropathy. p-MeCP2 and HIPK2 levels were significantly increased, but Seven in Absentia Homolog1 (SIAH1), which mediates proteasomal degradation of HIPK2, was decreased in the glomeruli of streptozotocin injected diabetic mice. Among several miRNAs, miR-25 and its precursor were significantly decreased in diabetic mice, whereas primary miR-25 levels were significantly increased. NADPH oxidase4 (NOX4), a target of miR-25, was significantly increased in diabetic mice. Protein levels of p-MeCP2, HIPK2, and NOX4 were increased in high glucose (HG)- or TGF-β-treated mouse glomerular mesangial cells (MMCs). miR-25 (primary, precursor, and mature) and mRNA levels of genes indicated in the in vivo study showed similar trends of regulation in MMCs treated with HG or TGF-β. The HG- or TGF-β-induced upregulation of p-MeCP2, NOX4 and primary miR-25, but downregulation of precursor and mature miR-25, were attenuated by Hipk2 siRNA. These results demonstrate a novel role for the SIAH1/HIPK2/MeCP2 axis in suppressing miR-25 processing and thereby upregulating NOX4 in early diabetic nephropathy.
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Affiliation(s)
- Hyung Jung Oh
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, California, USA.,Ewha Institute of Convergence Medicine, Ewha Womans University Mokdong Hospital, South Korea
| | - Mitsuo Kato
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Supriya Deshpande
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Erli Zhang
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, California, USA.,Tsingua University, Beijing, China
| | - Sadhan Das
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Linda Lanting
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Mei Wang
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Rama Natarajan
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, California, USA
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Abstract
Pericytes are a heterogeneous population of cells located in the blood vessel wall. They were first identified in the 19th century by Rouget, however their biological role and potential for drug targeting have taken time to be recognised. Isolation of pericytes from several different tissues has allowed a better phenotypic and functional characterization. These findings revealed a tissue-specific, multi-functional group of cells with multilineage potential. Given this emerging evidence, pericytes have acquired specific roles in pathobiological events in vascular diseases. In this review article, we will provide a compelling overview of the main diseases in which pericytes are involved, from well-established mechanisms to the latest findings. Pericyte involvement in diabetes and cancer will be discussed extensively. In the last part of the article we will review therapeutic approaches for these diseases in light of the recently acquired knowledge. To unravel pericyte-related vascular pathobiological events is pivotal not only for more tailored treatments of disease but also to establish pericytes as a therapeutic tool.
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Hu C, Sun L, Xiao L, Han Y, Fu X, Xiong X, Xu X, Liu Y, Yang S, Liu F, Kanwar YS. Insights into the Mechanisms Involved in the Expression and Regulation of Extracellular Matrix Proteins in Diabetic Nephropathy. Curr Med Chem 2016; 22:2858-70. [PMID: 26119175 DOI: 10.2174/0929867322666150625095407] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 06/15/2015] [Accepted: 06/24/2015] [Indexed: 02/06/2023]
Abstract
Diabetic Nephropathy (DN) is believed to be a major microvascular complication of diabetes. The hallmark of DN includes deposition of Extracellular Matrix (ECM) proteins, such as, collagen, laminin and fibronectin in the mesangium and renal tubulo-interstitium of the glomerulus and basement membranes. Such an increased expression of ECM leads to glomerular and tubular basement membranes thickening and increase of mesangial matrix, ultimately resulting in glomerulosclerosis and tubulointerstitial fibrosis. The characteristic morphologic glomerular mesangial lesion has been described as Kimmelstiel-Wilson nodule, and the process at times is referred to as diabetic nodular glomerulosclerosis. Thus, the accumulation of ECM proteins plays a critical role in the development of DN. The relevant mechanism(s) involved in the increased ECM expression and their regulation in the kidney in diabetic state has been extensively investigated and documented in the literature. Nevertheless, there are certain other mechanisms that may yet be conclusively defined. Recent studies demonstrated that some of the new signaling pathways or molecules including, Notch, Wnt, mTOR, TLRs and small GTPase may play a pivotal role in the modulation of ECM regulation and expression in DN. Such modulation could be operational for instance Notch through Notch1/Jagged1 signaling, Wnt by Wnt/β- catenin pathway and mTOR via PI3-K/Akt/mTOR signaling pathways. All these pathways may be critical in the modulation of ECM expression and tubulo-interstitial fibrosis. In addition, TLRs, mainly the TLR2 and TLR4, by TLR2- dependent and TGF-β-dependent conduits, may modulate ECM expression and generate a fibrogenic response. Small GTPase like Rho, Ras and Rab family by targeting relevant genes may also influence the accumulation of ECM proteins and renal fibrosis in hyperglycemic states. This review summarizes the recent information about the role and mechanisms by which these molecules and signaling pathways regulate ECM synthesis and its expression in high glucose ambience in vitro and in vivo states. The understanding of such signaling pathways and the molecules that influence expression, secretion and amassing of ECM may aid in developing strategies for the amelioration of diabetic nephropathy.
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Affiliation(s)
| | - L Sun
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
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Wu L, Wang Q, Guo F, Ma X, Ji H, Liu F, Zhao Y, Qin G. MicroRNA-27a Induces Mesangial Cell Injury by Targeting of PPARγ, and its In Vivo Knockdown Prevents Progression of Diabetic Nephropathy. Sci Rep 2016; 6:26072. [PMID: 27184517 PMCID: PMC4869109 DOI: 10.1038/srep26072] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 04/26/2016] [Indexed: 11/09/2022] Open
Abstract
MicroRNAs play important roles in the pathogenesis of diabetic nephropathy (DN). In this study, we found that high glucose upregulated miR-27a expression in cultured glomerular mesangial cells and in the kidney glomeruli of streptozotocin (STZ)-induced diabetic rats. miR-27a knockdown prevented high glucose-induced mesangial cell proliferation and also blocked the upregulation of extracellular matrix (ECM)-associated profibrotic genes. Reduction of cell proliferation and profibrotic gene expression by a miR-27a inhibitor depended upon the expression of peroxisome proliferator-activated receptor γ (PPARγ). Further studies showed that miR-27a negatively regulated PPARγ expression by binding to the 3'-untranslated region of rat PPARγ. An antisense oligonucleotide specific to miR-27a (antagomir-27a) significantly reduced renal miR-27a expression in STZ-induced diabetic rats and significantly increased PPARγ levels. Antagomir-27a also reduced kidney ECM accumulation and proteinuria in STZ-induced diabetic rats. These findings suggest that specific reduction of renal miR-27a decreases renal fibrosis, which may be explained in part by its regulation of PPARγ, and that targeting miR-27a may represent a novel therapeutic approach for DN.
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Affiliation(s)
- Lina Wu
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.,Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Qingzhu Wang
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Feng Guo
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Xiaojun Ma
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Hongfei Ji
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.,Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Fei Liu
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Yanyan Zhao
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Guijun Qin
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
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47
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Xu L, Zhang P, Guan H, Huang Z, He X, Wan X, Xiao H, Li Y. Vitamin D and its receptor regulate lipopolysaccharide-induced transforming growth factor-β, angiotensinogen expression and podocytes apoptosis through the nuclear factor-κB pathway. J Diabetes Investig 2016; 7:680-8. [PMID: 27180929 PMCID: PMC5009129 DOI: 10.1111/jdi.12505] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 01/13/2016] [Accepted: 02/20/2016] [Indexed: 12/01/2022] Open
Abstract
AIMS/INTRODUCTION To investigate the effects of vitamin D and its receptor on cytokines expression and podocytes apoptosis. MATERIALS AND METHODS Cultured mouse podocytes were pre-incubated with vitamin D or transiently transfected with small interfering ribonucleic acid (RNA) to knock down the vitamin D receptor. Lipopolysaccharide was used to mimic the inflammation status of diabetes. RESULTS In a lipopolysaccharide-induced state, expressions of transforming growth factor-β, angiotensinogen and vascular endothelial growth factor were similarly increased. Transforming growth factor-β and angiotensinogen levels originally elevated by lipopolysaccharide challenge were distinctly reduced after pre-incubation with vitamin D. Whereas after vitamin D receptor small interfering (si)RNA transfection, the aforementioned cytokines had opposite changes as expected. However, neither vitamin D pretreatment nor vitamin D receptor siRNA transfection influenced the previously increased vascular endothelial growth factor expression at messenger RNA or protein levels. When pretreated with vitamin D, decreases were observed for phosphorylated inhibitor-κB and the inhibitor kinase proteins. After siRNA transfection, those proteins levels were further elevated. The originally increased transforming growth factor-β and angiotensinogen levels as a result of lipopolysaccharide stimulation were reduced at both the messenger RNA and protein levels after the specific inhibition of the nuclear factor-κB pathway with pyrrolidine dithiocarbamate. The apoptosis rate of podocytes was decreased in a parallel manner after vitamin D pre-incubation, and increased after siRNA transfection, which was also suppressed by pyrrolidine dithiocarbamate. CONCLUSIONS Vitamin D and its receptor might be involved in the progression of diabetic nephropathy by regulating transforming growth factor-β, angiotensinogen expression and apoptosis of podocytes. The processes are mediated through the signaling of nuclear factor-κB pathway.
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Affiliation(s)
- Lijuan Xu
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Pengyuan Zhang
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Hongyu Guan
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhimin Huang
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xiaoying He
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xuesi Wan
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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48
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Harvey TW, Engel JE, Chade AR. Vascular Endothelial Growth Factor and Podocyte Protection in Chronic Hypoxia: Effects of Endothelin-A Receptor Antagonism. Am J Nephrol 2016; 43:74-84. [PMID: 26930122 DOI: 10.1159/000444719] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 02/12/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Podocytes are major components of the filtration barrier and a renal source of vascular endothelial growth factor (VEGF). Chronic renovascular disease (RVD) progressively degrades the renal function, accompanied by podocyte damage and a progressive reduction in VEGF. We showed that the endothelin (ET) pathway contributes to this pathological process and ET-A (but not ET-B) receptor antagonism protects the kidney in RVD. We hypothesize that ET-A-induced renoprotection is largely driven by the protection of podocyte integrity and function. METHODS To mimic the renal environment of chronic RVD, human podocytes were incubated under chronic hypoxia for 96 h and divided in untreated or treated with an ET-A or ET-B receptor antagonist. Cells were quantified after 96 h. Cell homogenates and media were obtained after 1, 24 and 96 h to quantify production of VEGF, anti-VEGF soluble receptor s-Flt1, and the expression of apoptotic mediators. A separate set of similar experiments was performed after addition of a VEGF-neutralizing antibody (VEGF-NA). RESULTS Hypoxia decreased podocyte number, which was exacerbated by ET-B but improved after ET-A antagonism. Production of VEGF was preserved by ET-A antagonism, whereas s-Flt1 increased in hypoxic cells after ET-B antagonism only, accompanied by a greater expression of pro-apoptotic mediators. On the other hand, treatment with VEGF-NA diminished ET-A-induced protection of podocytes. CONCLUSION ET-A antagonism preserves podocyte viability and integrity under chronic hypoxia, whereas ET-B antagonism exacerbates podocyte dysfunction and death. Enhanced bioavailability of VEGF after ET-A antagonism could be a pivotal mechanism of podocyte protection that significantly contributes to ET-A receptor blockade-induced renal recovery in chronic RVD.
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Affiliation(s)
- Taylor W Harvey
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Miss., USA
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He Y, Xu Z, Fu H, Chen B, Wang S, Chen B, Zhou M, Cai Y. Combined Microencapsulated Islet Transplantation and Revascularization of Aortorenal Bypass in a Diabetic Nephropathy Rat Model. J Diabetes Res 2016; 2016:9706321. [PMID: 27119088 PMCID: PMC4826923 DOI: 10.1155/2016/9706321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 03/08/2016] [Indexed: 01/20/2023] Open
Abstract
OBJECTIVE Revascularization of aortorenal bypass is a preferred technique for renal artery stenosis (RAS) in diabetic nephropathy (DN) patients. Restenosis of graft vessels also should be considered in patients lacking good control of blood glucose. In this study, we explored a combined strategy to prevent the recurrence of RAS in the DN rat model. METHODS A model of DN was established by intraperitoneal injection of streptozotocin. Rats were divided into 4 groups: SR group, MIT group, Com group, and the untreated group. The levels of blood glucose and urine protein were measured, and changes in renal pathology were observed. The expression of monocyte chemoattractant protein-1 (MCP-1) in graft vessels was assessed by immunohistochemical staining. Histopathological staining was performed to assess the pathological changes of glomeruli and tubules. RESULTS The levels of urine protein and the expression of MCP-1 in graft vessels were decreased after islet transplantation. The injury of glomerular basement membrane and podocytes was significantly ameliorated. CONCLUSIONS The combined strategy of revascularization and microencapsulated islet transplantation had multiple protective effects on diabetic nephropathy, including preventing atherosclerosis in the graft vessels and alleviating injury to the glomerular filtration barrier. This combined strategy may be helpful for DN patients with RAS.
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Affiliation(s)
- Yunqiang He
- Zhejiang Provincial Top Key Discipline in Surgery, Wenzhou Key Laboratory of Surgery, Department of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Ziqiang Xu
- Department of Transplantation, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Hongxing Fu
- School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Bin Chen
- Department of B-Mode Ultrasound, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Silu Wang
- Zhejiang Provincial Top Key Discipline in Surgery, Wenzhou Key Laboratory of Surgery, Department of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Bicheng Chen
- Zhejiang Provincial Top Key Discipline in Surgery, Wenzhou Key Laboratory of Surgery, Department of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Mengtao Zhou
- Zhejiang Provincial Top Key Discipline in Surgery, Wenzhou Key Laboratory of Surgery, Department of Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
- *Mengtao Zhou: and
| | - Yong Cai
- Department of Transplantation, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
- *Yong Cai:
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50
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He Y, Xu Z, Zhou M, Wu M, Chen X, Wang S, Qiu K, Cai Y, Fu H, Chen B, Zhou M. Reversal of Early Diabetic Nephropathy by Islet Transplantation under the Kidney Capsule in a Rat Model. J Diabetes Res 2016; 2016:4157313. [PMID: 27725943 PMCID: PMC5048050 DOI: 10.1155/2016/4157313] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 08/15/2016] [Accepted: 08/23/2016] [Indexed: 12/24/2022] Open
Abstract
Objective. Diabetic nephropathy (DN) is a common microvascular complication of diabetes mellitus, and insulin therapy has many side effects in the treatment of DN. Islet transplantation has emerged as a promising therapy for diabetic patients. This study was established to investigate its advantageous effects in a rat model of early DN. Methods. Streptozotocin was administered to the rats to induce diabetes. Twelve weeks later, the diabetic rats were divided into 3 groups: the islet-transplanted group (IT group), the insulin-treated group (IN group), and the untreated group (DN group). Renal injury and kidney structure were assessed by urinalysis and transmission electron microscopy (TEM) detection. Immunohistochemical staining and western blotting were performed to assess renal fibrosis levels. Results. The early DN features were reversed and the glomerular filtration barrier and basement membrane structures were improved at 4 weeks after islet transplantation. The urine microalbumin-to-creatinine ratio (ACR), protein-to-creatinine ratio, and mean thickness of the glomerular basement membrane (GBM) were significantly decreased in the IT group. The expression of renal fibrotic factors was also significantly decreased. Conclusions. These data suggest that early DN can be reversed after islet transplantation, and they may facilitate the development of a clinical therapeutic strategy for human diabetes mellitus.
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Affiliation(s)
- Yunqiang He
- Key Laboratory of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Ziqiang Xu
- Department of Transplantation, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province 325000, China
| | - Mingshi Zhou
- Key Laboratory of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Minmin Wu
- Key Laboratory of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Xuehai Chen
- Key Laboratory of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Silu Wang
- Key Laboratory of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Kaiyan Qiu
- School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang Province 325000, China
| | - Yong Cai
- Department of Transplantation, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province 325000, China
| | - Hongxing Fu
- School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang Province 325000, China
| | - Bicheng Chen
- Key Laboratory of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
- *Bicheng Chen: and
| | - Mengtao Zhou
- Department of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
- *Mengtao Zhou:
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