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Lee HK, Jung NH, Lee DE, Lee H, Yang J, Kim YS, Han SS, Han N, Kim IW, Oh JM. Discovery of Biomarkers Related to Interstitial Fibrosis and Tubular Atrophy among Kidney Transplant Recipients by mRNA-Sequencing. J Pers Med 2023; 13:1242. [PMID: 37623492 PMCID: PMC10455123 DOI: 10.3390/jpm13081242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/28/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023] Open
Abstract
Interstitial fibrosis and tubular atrophy (IF/TA) after kidney transplantation causes a chronic deterioration of graft function. IF/TA can be diagnosed by means of a graft biopsy, which is a necessity as non-invasive diagnostic methods are unavailable. In this study, we identified IF/TA-related differentially expressed genes (DEGs) through next-generation sequencing using peripheral blood mononuclear cells. Blood samples from kidney transplant recipients undergoing standard immunosuppressive therapy (tacrolimus/mycophenolate mofetil or mycophenolate sodium/steroid) and diagnosed as IF/TA (n = 41) or normal (controls; n = 41) at their one-year protocol biopsy were recruited between January of 2020 and August of 2020. DEGs were derived through mRNA sequencing and validated by means of a quantitative real-time polymerase chain reaction. We identified 34 DEGs related to IF/TA. ADAMTS2, PLIN5, CLDN9, and KCNJ15 demonstrated a log2(fold change) of >1.5 and an area under the receiver operating characteristic curve (AUC) value of >0.6, with ADAMTS2 showing the largest AUC value and expression levels, which were 3.5-fold higher in the IF/TA group relative to that observed in the control group. We identified and validated DEGs related to IF/TA progression at one-year post-transplantation. Specifically, we identified ADAMTS2 as a potential IF/TA biomarker.
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Affiliation(s)
- Hyun Kyung Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea; (H.K.L.)
| | - Na Hyun Jung
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea; (H.K.L.)
| | - Da Eun Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea; (H.K.L.)
| | - Hajeong Lee
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea (Y.S.K.)
- Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Jaeseok Yang
- Transplantation Center, Seoul National University Hospital, Seoul 03080, Republic of Korea
- Division of Nephrology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Yon Su Kim
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea (Y.S.K.)
- Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Seung Seok Han
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea (Y.S.K.)
- Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Nayoung Han
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea; (H.K.L.)
- College of Pharmacy, Jeju National University, Jeju 63243, Republic of Korea
| | - In-Wha Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea; (H.K.L.)
| | - Jung Mi Oh
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea; (H.K.L.)
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Liao L, Duan L, Guo Y, Zhou B, Xu Q, Zhang C, Liu W, Liu W, Liu Z, Hu J, Chen J, Lu J. TRIM46 upregulates Wnt/β-catenin signaling by inhibiting Axin1 to mediate hypoxia-induced epithelial-mesenchymal transition in HK2 cells. Mol Cell Biochem 2022; 477:2829-2839. [PMID: 35670901 DOI: 10.1007/s11010-022-04467-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/02/2022] [Indexed: 10/18/2022]
Abstract
Hypoxia can cause Epithelial-mesenchymal transition (EMT) in renal tubular cells, and in turn, renal fibrosis. We tested the expression of TRIM46, a member of tripartite motif-containing (TRIM) family proteins, and mesenchymal markers under hypoxia. Our results showed that hypoxia significantly enhanced expression of TRIM46 in HK2 human renal proximal tubular epithelial cells. Our data further showed that hypoxia led to upregulated expression of mesenchymal markers including α-smooth muscle actin, vimentin, and Snail, and downregulated expression of epithelial marker E-cadherin, coupled with an increased abundance of nuclear β-catenin. However, such effects were reversed when TRIM46 expression was knocked down. TRIM46 overexpression had similar effects as hypoxia exposure, and such effects were reversed when cells were treated with XAV-939, a selective inhibitor for β-catenin. Furthermore, we found that TRIM46 promoted ubiquitination and proteasomal degradation of Axin1 protein, a robust negative regulator of Wnt/β-catenin signaling activity. Finally, increased TRIM46 coupled with decreased Axin1 was observed in a rat renal fibrosis model. These data suggest a novel mechanism contributing to EMT that mediates hypoxia-induced renal fibrosis. Our results suggest that selectively inhibiting this pathway that activates fibrosis in human kidney may lead to development of a novel therapeutic approach for managing this disease.
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Affiliation(s)
- Lin Liao
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Lianxiang Duan
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Yue Guo
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Baojuan Zhou
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Qiming Xu
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Chuanfu Zhang
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Weiwei Liu
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Wenrui Liu
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Ziyang Liu
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Jing Hu
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China
| | - Jie Chen
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China.
| | - Jianrao Lu
- Department of Nephrology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No.358 Datong Road in Pudong New District, Shanghai, 200137, China.
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Yoshihara F, Hosoda H, Doi T, Yoshida M, Kitamura K, Yamamoto H, Asaumi Y, Ishibashi-Ueda H, Kishida M, Arisato T, Matsuo M, Miyazato M, Yasuda S. Combined evaluation of plasma B-type natriuretic peptide and urinary liver-type fatty acid-binding protein/creatinine ratio is related to worsening renal function in patients undergoing elective percutaneous coronary intervention. Clin Exp Nephrol 2021; 25:1319-1328. [PMID: 34255252 DOI: 10.1007/s10157-021-02113-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 07/09/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND There are few reports on the significance for the combined evaluation of blood humoral factors and urinary biomarkers in terms of worsening renal function (WRF) after coronary angiography (CAG)/percutaneous coronary arterial intervention (PCI). METHOD AND RESULTS Urinary liver type-fatty acid-binding protein (L-FABP), neutrophil gelatinase associated lipocalin (NGAL), and adrenomedullin (AM) were measured less than 24 h before and 3 h, 6 h, 1 day, and 2 days after CAG/PCI. WRF was defined as a > 20% decrease in the estimated GFR. WRF occurred in seven of 100 patients and the increase in L-FABP/creatinine (Cr) at 1 day after CAG/PCI was significantly higher in the WRF group than in the non-WRF group. Plasma B-type natriuretic peptide (BNP) before CAG/PCI and L-FABP/Cr at 1 day after CAG/PCI were independent predictors for WRF. The areas under the receiver-operating characteristic curves were as follows: 0.760 for BNP before CAG/PCI, 0.731 for L-FABP/Cr at 1 day after CAG/PCI, and 0.892 for BNP and L-FABP/Cr. Urinary AM levels after PCI/CAG were negatively correlated only to serum potassium levels. Gene expressions of AM and AM-receptor were detectable in renal tubule epithelial cells. AM increased intracellular second messenger levels in a dose-dependent manner. CONCLUSIONS Our results suggest that combined evaluation of plasma BNP and urinary L-FABP/Cr is useful as a predictor of renal dysfunction in CAG/PCI patients.
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Affiliation(s)
- Fumiki Yoshihara
- Division of Nephrology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan.
| | - Hiroshi Hosoda
- Department of Regenerative Medicine and Tissue Engineering, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Takahito Doi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Morikatsu Yoshida
- Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmmachi, Suita, Osaka, 564-8565, Japan
| | - Kazuo Kitamura
- Circulatory and Body Fluid Regulation, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan
| | - Haruko Yamamoto
- Center for Advancing Clinical and Translational Sciences, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Yasuhide Asaumi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Hatsue Ishibashi-Ueda
- Department of Pathology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Masatsugu Kishida
- Division of Nephrology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Tetsuya Arisato
- Division of Nephrology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Miki Matsuo
- Division of Nephrology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Mikiya Miyazato
- Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmmachi, Suita, Osaka, 564-8565, Japan
| | - Satoshi Yasuda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
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Park HJ, Fan Z, Bai Y, Ren Q, Rbaibi Y, Long KR, Gliozzi ML, Rittenhouse N, Locker JD, Poholek AC, Weisz OA. Transcriptional Programs Driving Shear Stress-Induced Differentiation of Kidney Proximal Tubule Cells in Culture. Front Physiol 2020; 11:587358. [PMID: 33192601 PMCID: PMC7662153 DOI: 10.3389/fphys.2020.587358] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 09/28/2020] [Indexed: 12/16/2022] Open
Abstract
Cultured cell models are an essential complement to dissecting kidney proximal tubule (PT) function in health and disease but do not fully recapitulate key features of this nephron segment. We recently determined that culture of opossum kidney (OK) cells under continuous orbital shear stress (OSS) significantly augments their morphological and functional resemblance to PTs in vivo. Here we used RNASeq to identify temporal transcriptional changes upon cell culture under static or shear stress conditions. Comparison of gene expression in cells cultured under static or OSS conditions with a database of rat nephron segment gene expression confirms that OK cells cultured under OSS are more similar to the PT in vivo compared with cells maintained under static conditions. Both improved oxygenation and mechanosensitive stimuli contribute to the enhanced differentiation in these cells, and we identified temporal changes in gene expression of known mechanosensitive targets. We observed changes in mRNA and protein levels of membrane trafficking components that may contribute to the enhanced endocytic capacity of cells cultured under OSS. Our data reveal pathways that may be critical for PT differentiation in vivo and validate the utility of this improved cell culture model as a tool to study PT function.
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Affiliation(s)
- Hyun Jung Park
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Zhenjiang Fan
- Department of Computer Science, University of Pittsburgh, Pittsburgh, PA, United States
| | - Yulong Bai
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Qidong Ren
- School of Medicine, Tsinghua University, Beijing, China
| | - Youssef Rbaibi
- Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Kimberly R Long
- Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Megan L Gliozzi
- Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Natalie Rittenhouse
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Joseph D Locker
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Amanda C Poholek
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Ora A Weisz
- Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
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Helicobacter pylori-induced adrenomedullin modulates IFN-γ-producing T-cell responses and contributes to gastritis. Cell Death Dis 2020; 11:189. [PMID: 32184393 PMCID: PMC7078296 DOI: 10.1038/s41419-020-2391-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 02/29/2020] [Accepted: 03/02/2020] [Indexed: 01/13/2023]
Abstract
Adrenomedullin (ADM) is a multifunctional peptide that is expressed by many surface epithelial cells, but its relevance to Helicobacter pylori (H. pylori)-induced gastritis is unknown. Here, we found that gastric ADM expression was elevated in gastric mucosa of H. pylori-infected patients and mice. In H. pylori-infected human gastric mucosa, ADM expression was positively correlated with the degree of gastritis; accordingly, blockade of ADM resulted in decreased inflammation within the gastric mucosa of H. pylori-infected mice. During H. pylori infection, ADM production was promoted via PI3K–AKT signaling pathway activation by gastric epithelial cells in a cagA-dependent manner, and resulted in increased inflammation within the gastric mucosa. This inflammation was characterized by the increased IFN-γ-producing T cells, whose differentiation was induced via the phosphorylation of AKT and STAT3 by ADM derived from gastric epithelial cells. ADM also induced macrophages to produce IL-12, which promoted the IFN-γ-producing T-cell responses, thereby contributing to the development of H. pylori-associated gastritis. Accordingly, blockade of IFN-γ or knockout of IFN-γ decreased inflammation within the gastric mucosa of H. pylori-infected mice. This study identifies a novel regulatory network involving H. pylori, gastric epithelial cells, ADM, macrophages, T cells, and IFN-γ, which collectively exert a pro-inflammatory effect within the gastric microenvironment.
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Mandal J, Roth M, Papakonstantinou E, Fang L, Savic S, Tamm M, Stolz D. Adrenomedullin mediates pro-angiogenic and pro-inflammatory cytokines in asthma and COPD. Pulm Pharmacol Ther 2019; 56:8-14. [PMID: 30690080 DOI: 10.1016/j.pupt.2019.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 12/13/2022]
Abstract
PURPOSE Adrenomedullin (AM) is a pluripotent peptide hormone with contradictory effects in human health and disease. In chronic inflammatory lung diseases, such as asthma and COPD, AM has been shown to inhibit inflammation and cell proliferation. In the present study, we aimed to investigate the effect of AM on pro-angiogenic and pro-inflammatory cytokines in asthma and COPD. PATIENTS AND METHODS Serum levels of pro-AM were measured in patients with asthma, COPD and matched controls. The effect of AM on intracellular signaling proteins and cytokine secretion was assessed in primary cultures of epithelial cells (EC) and airway smooth muscle cells (ASMC) established from endo-bronchial biopsies of patients with asthma, COPD and controls. RESULTS Serum pro-AM was higher in patients with asthma and COPD, compared to controls. AM stimulated cAMP in ASMC but not in EC. In EC, AM decreased Erk1/2 MAPK expression and activation but in ASMC, AM activated Erk1/2. This effect was similar in asthma, COPD and controls. AM stimulated the secretion of pro-angiogenic CXCL1 by EC of controls and CXCL5 by EC of asthma patients. AM did not affect the secretion of IL-6 or IL-8 by EC but stimulated the secretion of IL-6 by ASMC. In EC, AM inhibited the stimulatory effect of TGF-β and IL-4 on the secretion of IL-6 and IL-8 but had an additive stimulatory effect with TGF-β in ASMC. CONCLUSIONS These data suggest that AM mediates the secretion of pro-angiogenic and pro-inflammatory cytokines in a cell-type and/or a disease-specific way, explaining its association with clinical outcomes in COPD.
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Affiliation(s)
- Jyotshna Mandal
- Clinic of Pulmonary Medicine, University Hospital Basel, Basel, Switzerland; Respiratory Cell Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Michael Roth
- Clinic of Pulmonary Medicine, University Hospital Basel, Basel, Switzerland; Respiratory Cell Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Eleni Papakonstantinou
- Clinic of Pulmonary Medicine, University Hospital Basel, Basel, Switzerland; Respiratory Cell Research, Department of Biomedicine, University of Basel, Basel, Switzerland; Laboratory of Pharmacology, Department of Medicine, Aristotle University of Thessaloniki, Greece
| | - Lei Fang
- Clinic of Pulmonary Medicine, University Hospital Basel, Basel, Switzerland; Respiratory Cell Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Spasenija Savic
- Institute of Pathology, University Hospital Basel, Switzerland
| | - Michael Tamm
- Clinic of Pulmonary Medicine, University Hospital Basel, Basel, Switzerland; Respiratory Cell Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Daiana Stolz
- Clinic of Pulmonary Medicine, University Hospital Basel, Basel, Switzerland; Respiratory Cell Research, Department of Biomedicine, University of Basel, Basel, Switzerland.
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Liu M, Ning X, Li R, Yang Z, Yang X, Sun S, Qian Q. Signalling pathways involved in hypoxia-induced renal fibrosis. J Cell Mol Med 2017; 21:1248-1259. [PMID: 28097825 PMCID: PMC5487923 DOI: 10.1111/jcmm.13060] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Accepted: 11/18/2016] [Indexed: 12/23/2022] Open
Abstract
Renal fibrosis is the common pathological hallmark of progressive chronic kidney disease (CKD) with diverse aetiologies. Recent researches have highlighted the critical role of hypoxia during the development of renal fibrosis as a final common pathway in end‐stage kidney disease (ESKD), which joints the scientist's attention recently to exploit the molecular mechanism underlying hypoxia‐induced renal fibrogenesis. The scaring formation is a multilayered cellular response and involves the regulation of multiple hypoxia‐inducible signalling pathways and complex interactive networks. Therefore, this review will focus on the signalling pathways involved in hypoxia‐induced pathogenesis of interstitial fibrosis, including pathways mediated by HIF, TGF‐β, Notch, PKC/ERK, PI3K/Akt, NF‐κB, Ang II/ROS and microRNAs. Roles of molecules such as IL‐6, IL‐18, KIM‐1 and ADO are also reviewed. A comprehensive understanding of the roles that these hypoxia‐responsive signalling pathways and molecules play in the context of renal fibrosis will provide a foundation towards revealing the underlying mechanisms of progression of CKD and identifying novel therapeutic targets. In the future, promising new effective therapy against hypoxic effects may be successfully translated into the clinic to alleviate renal fibrosis and inhibit the progression of CKD.
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Affiliation(s)
- Minna Liu
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.,State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiaoxuan Ning
- Department of Geriatrics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Rong Li
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhen Yang
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.,State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiaoxia Yang
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.,State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Shiren Sun
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Qi Qian
- Department of Medicine, Division of Nephrology and hypertension, Mayo Clinic College of Medicine, Mayo Graduate School, Rochester, MN, USA
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