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Hodrea J, Balogh DB, Hosszu A, Lenart L, Besztercei B, Koszegi S, Sparding N, Genovese F, Wagner LJ, Szabo AJ, Fekete A. Reduced O-GlcNAcylation and tubular hypoxia contribute to the antifibrotic effect of SGLT2 inhibitor dapagliflozin in the diabetic kidney. Am J Physiol Renal Physiol 2020; 318:F1017-F1029. [PMID: 32116017 PMCID: PMC7242633 DOI: 10.1152/ajprenal.00021.2020] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Diabetic kidney disease is a worldwide epidemic, and therapies are incomplete. Clinical data suggest that improved renal outcomes by Na+-glucose cotransporter 2 inhibitor (SGLT2i) are partly beyond their antihyperglycemic effects; however, the mechanisms are still elusive. Here, we investigated the effect of the SGLT2i dapagliflozin (DAPA) in the prevention of elevated O-GlcNAcylation and tubular hypoxia as contributors of renal fibrosis. Type 1 diabetes was induced by streptozotocin in adult male Wistar rats. After the onset of diabetes, rats were treated for 6 wk with DAPA or DAPA combined with losartan (LOS). The effect of hyperglycemia was tested in HK-2 cells kept under normal or high glucose conditions. To test the effect of hypoxia, cells were kept in 1% O2 for 2 h. Cells were treated with DAPA or DAPA combined with LOS. DAPA slowed the loss of renal function, mitigated renal tubular injury markers (kidney injury molecule-1 and neutrophil gelatinase-associated lipocalin), and reduced tubulointerstitial fibrosis. DAPA diminished high glucose-induced protein O-GlcNAcylation and moderated the tubular response to hypoxia through the hypoxia-inducible factor pathway. DAPA alone was as effective as combined treatment with LOS in all outcome parameters. These data highlight the role of ameliorated O-GlcNAcylation and diminished tubular hypoxia as important benefits of SGLT2i treatment. Our results support the link between glucose toxicity, tubular hypoxia, and fibrosis, a vicious trio that could be targeted by SGLT2i in kidney diseases of other origins as well.
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Affiliation(s)
- Judit Hodrea
- MTA-SE "Lendület" Diabetes Research Group, Hungarian Academy of Sciences, Budapest, Hungary.,1st Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Dora B Balogh
- MTA-SE "Lendület" Diabetes Research Group, Hungarian Academy of Sciences, Budapest, Hungary.,1st Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Adam Hosszu
- MTA-SE "Lendület" Diabetes Research Group, Hungarian Academy of Sciences, Budapest, Hungary.,1st Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Lilla Lenart
- MTA-SE "Lendület" Diabetes Research Group, Hungarian Academy of Sciences, Budapest, Hungary
| | - Balazs Besztercei
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Sandor Koszegi
- MTA-SE "Lendület" Diabetes Research Group, Hungarian Academy of Sciences, Budapest, Hungary
| | - Nadja Sparding
- Nordic Bioscience, Biomarkers & Research, Herlev, Denmark.,Biomedical Sciences, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen N, Denmark
| | | | - Laszlo J Wagner
- Department of Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - Attila J Szabo
- 1st Department of Pediatrics, Semmelweis University, Budapest, Hungary.,MTA-SE Paediatrics and Nephrology Research Group, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Andrea Fekete
- MTA-SE "Lendület" Diabetes Research Group, Hungarian Academy of Sciences, Budapest, Hungary.,1st Department of Pediatrics, Semmelweis University, Budapest, Hungary
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Encinas JFA, Foncesca CH, Perez MM, Simões DP, da Costa Aguiar Alves B, Bacci MR, Maifrino LBM, Fonseca FLA, da Veiga GL. Role of hypoxia-inducible factor 1α as a potential biomarker for renal diseases-A systematic review. Cell Biochem Funct 2019; 37:443-451. [PMID: 31317578 DOI: 10.1002/cbf.3425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 04/01/2019] [Accepted: 06/26/2019] [Indexed: 01/14/2023]
Abstract
Renal cells need oxygen for homeostasis; it is known for adjusting cellular functioning and the energy obtainment have a broad relationship with cellular respiration, through the O2 bioavailability. O2 homeostasis regulation in the kidney is mediated by hypoxia-inducible factors (HIFs). HIF is divided into three α isoforms, represented by HIF-1α, HIF-2α, and HIF-3α in addition to three paralogs of HIF-1β; these are involved in some metabolic processes, as well as in the pathogenesis of several diseases. Renal biopsy analyses of patients and experimental animal models aim to understand the relationship between HIF and protection against developing renal diseases or the induction of their onset, being thus this molecule can be considered a potential biomarker of renal disease. We carried out a systematic review to which we included studies on HIF-1α and renal disease in the last 5 years (2013-2018) in researches with humans and/or animal model through searches in three databases: LILACS, PubMed, and SciELO by two researchers. We obtained 22 articles that discussed the relationship with HIF as inductor or protector against renal disease and no relation between HIF and renal. We observed controversies remain regarding the relation between of HIF with renal diseases; this may be related to the different intracellular pathways mediated by HIF-1α, thereby determining differentiated cellular responses.
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Affiliation(s)
| | - Carlos Henrique Foncesca
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil
| | - Matheus Moreira Perez
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil
| | - Diogo Pimenta Simões
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil.,Universidade Municipal de São Caetano do Sul/USCS - São Caetano do Sul, Sao Caetano do Sul, Brazil
| | | | - Marcelo Rodrigues Bacci
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil
| | | | - Fernando Luiz Affonso Fonseca
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil.,Universidade Federal de São Paulo/UNIFESP - Diadema, São Paulo, Brazil
| | - Glaucia Luciano da Veiga
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil
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Gao JR, Jiang NN, Jiang H, Wei LB, Gao YC, Qin XJ, Zhu MQ, Wang J. Effects of Qi Teng Xiao Zhuo granules on circRNA expression profiles in rats with chronic glomerulonephritis. DRUG DESIGN DEVELOPMENT AND THERAPY 2019; 13:1901-1913. [PMID: 31239641 PMCID: PMC6556108 DOI: 10.2147/dddt.s191386] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 03/23/2019] [Indexed: 01/16/2023]
Abstract
Objectives: To screen and study circular RNA (circRNA) expression profiles in QTXZG-mediated treatment of chronic glomerulonephritis (CGN) induced by adriamycin in rats and to research the possible roles and molecular mechanisms of QTXZG. Materials and methods: Next-generation RNA sequencing was used to identify circRNA expression profiles in CGN after QTXZG treatment compared with a CGN model group and a control group. Bioinformatics analysis was performed to predict potential target miRNAs and mRNAs. GO and pathway analyses for potential target mRNAs were used to explore the potential roles of differentially expressed (DE) circRNAs. Results: We identified 31 and 21 significantly DE circRNAs between the model group vs the control group and the model group vs the QTXZG group, respectively. Four circRNAs that resulted from the establishment of the CGN model were reversed following treatment with QTXZG. Further analysis revealed that these four circRNAs may play important roles in the development of CGN. Conclusions: This study elucidated the comprehensive expression profile of circRNAs in CGN rats after QTXZG treatment for the first time. Analysis of the circRNA-miRNA-mRNA-ceRNA network to determine potential function provided a comprehensive understanding of circRNAs that may be involved in the development of CGN. The current study indicated that therapeutic effects of QTXZG on CGN may be due to regulation of circRNA expression.
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Affiliation(s)
- Jia-Rong Gao
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Nan-Nan Jiang
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Hui Jiang
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Liang-Bing Wei
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Ya-Chen Gao
- Department of Nephrology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Xiu-Juan Qin
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Meng-Qing Zhu
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Jing Wang
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, People's Republic of China
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Huang S, Sheng X, Susztak K. The kidney transcriptome, from single cells to whole organs and back. Curr Opin Nephrol Hypertens 2019; 28:219-226. [PMID: 30844884 PMCID: PMC6761926 DOI: 10.1097/mnh.0000000000000495] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
PURPOSE OF REVIEW Transcriptome analysis of human kidney samples provides an integrated output of genetic, physiological, or environmental inputs. This review summarizes recent findings including gene expression and genetic variation integration, bulk and single cell gene expression analysis, and describes how such studies have improved our understanding of kidney disease development. RECENT FINDINGS Bulk or whole tissue analysis of patient kidney samples identified a large number of genes, whose levels correlate with kidney function and/or structural damage. These genes were enriched for metabolic and immune functions. Using expression quantitative trait analysis, genetic variations-driven gene expression can be identified. Recent developments in single cell sequencing defined cell-type-specific gene expression changes and highlighted specific cell types for disease development. SUMMARY Recent advancement in whole tissue transcriptomics, specifically incorporating genotype information and single cell data have been powerful to identify kidney disease-associated genes, pathways, and cell types.
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Affiliation(s)
- Shizheng Huang
- Department of Medicine, Renal Electrolyte and Hypertension Division, University of Pennsylvania, Philadelphia, PA, USA
| | - Xin Sheng
- Department of Medicine, Renal Electrolyte and Hypertension Division, University of Pennsylvania, Philadelphia, PA, USA
| | - Katalin Susztak
- Department of Medicine, Renal Electrolyte and Hypertension Division, University of Pennsylvania, Philadelphia, PA, USA
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