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Zhong X, Huang Y, Jia J, Liu J, Su H, Hu Q, Tan R, Wang L. Astragalus mongholicus bunge and panax notoginseng formula (A&P) improves renal fibrosis in UUO mice via inhibiting the long non-coding RNA A330074K22Rik and downregulating ferroptosis signaling. BMC Complement Med Ther 2024; 24:273. [PMID: 39030535 PMCID: PMC11264518 DOI: 10.1186/s12906-024-04557-4] [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: 01/19/2024] [Accepted: 06/18/2024] [Indexed: 07/21/2024] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) and its associated end-stage renal disease (ESRD) are significant health problems that pose a threat to human well-being. Renal fibrosis is a common feature and ultimate pathological outcome of various CKD leading to ESRD. The Astragalus mongholicus Bunge and Panax notoginseng formula (A&P) is a refined compound formulated by our research group, which has been clinically administered for over a decade and has demonstrated the ability to improve the inflammatory state of various acute or chronic kidney diseases. However, the underlying mechanism by which A&P ameliorates renal fibrosis remains unclear. METHODS We established a mouse model by surgically ligating the unilateral ureter to induce renal injury in vivo. And we utilized renal in situ electroporation of a plasmid with low LncRNA A33 expression to establish the unilateral ureteral obstruction(UUO)mouse model. In vitro, we stimulated primary tubular epithelial cells(pTEC) injury using TGF-β1, siRNA-A33, and pcDNA3.1-A33 plasmids were transfected into pTECs to respectively knockdown and overexpress LncRNA A33, and both in vitro and in vivo models were intervened with A&P. RESULTS The results demonstrated that A&P effectively alleviated renal fibrosis in mice. Subsequent findings indicated high expression of LncRNA A33 in the kidneys of UUO mice and TGF-β1-induced renal tubular cells. In situ, renal electroporation of a plasmid with reduced LncRNA A33 expression revealed that inhibiting LncRNA A33 significantly improved renal fibrosis in UUO mice. Moreover, A&P effectively suppressed LncRNA A33 expression both in vitro and in vivo. Subsequent downregulation of LncRNA A33 in renal tubular epithelial cells resulted in the downregulation of numerous fibrotic markers, a significant inhibition of LncRNA A33, and a notable reduction in downstream ferroptosis signaling. Cell experiments demonstrated that A&P improved renal fibrosis in UUO mice by inhibiting LncRNA A33 and downregulating ferroptosis signaling. CONCLUSION Through the inhibition of LncRNA A33 and subsequent downregulation of ferroptosis signaling, A&P showed potential as a therapeutic approach for improving renal fibrosis in UUO mice, providing a potential treatment avenue for CKD.
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Affiliation(s)
- Xia Zhong
- Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, 187 Chunhui Avenue, Longma-Tan District, Luzhou, Sichuan, China
| | - Yue Huang
- Department of Nephrology, The Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
- Southwest Medical University, Luzhou, China
| | - Jian Jia
- Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, 187 Chunhui Avenue, Longma-Tan District, Luzhou, Sichuan, China
| | - Jian Liu
- Department of Nephrology, The Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Hongwei Su
- Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, 187 Chunhui Avenue, Longma-Tan District, Luzhou, Sichuan, China
- Department of Urology, The Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Qiongdan Hu
- Department of Nephrology, The Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China.
| | - Ruizhi Tan
- Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, 187 Chunhui Avenue, Longma-Tan District, Luzhou, Sichuan, China.
| | - Li Wang
- Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, 187 Chunhui Avenue, Longma-Tan District, Luzhou, Sichuan, China.
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Liu H, Deng Y, Luo G, Yang Y, Xie B, Diao H, Chen M, Chen L, Xie P, Kwan HY, Zhao X, Sun X. DNA methylation of miR-181a-5p mediated by DNMT3b drives renal interstitial fibrosis developed from acute kidney injury. Epigenomics 2024:1-16. [PMID: 39023272 DOI: 10.1080/17501911.2024.2370229] [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: 01/21/2024] [Accepted: 06/14/2024] [Indexed: 07/20/2024] Open
Abstract
Aim: To explore the role of miR-181a-5p in the progression of acute kidney injury (AKI) to renal interstitial fibrosis (RIF) from the perspective of DNA methylation. Materials & methods: The role of miR-181a-5p was confirmed by collecting clinical samples, injecting miR-181a-5p agomir into tail vein, and transfecting miR-181a-5p mimic in vitro. The mechanism of miR-181a-5p's influence on AKI induced RIF was investigated by methylation-specific PCR, bioinformatic analysis, transcriptome sequencing and so on. Results: MiR-181a-5p plays an important role in AKI induced RIF. DNMT3b-mediated miR-181a-5p promoter hypermethylation is the main reason for the downregulation of miR-181a-5p. HDAC9 and SNAI2 are direct targets of miR-181a-5p. Conclusion: Hypermethylation of miR-181a-5p promoter mediated by DNMT3b promotes AKI induced RIF by targeting HDAC9 and SNAI2.
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Affiliation(s)
- Huaxi Liu
- Department of Nephrology, TCM-Integrated Hospital of Southern Medical University, Guangzhou, Guangdong, 510315, China
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
- Boai Hospital of Zhongshan, Zhongshan, Guangdong 528403, China
| | - Yijian Deng
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Guanfeng Luo
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Ying Yang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Bei Xie
- Department of Nephrology, TCM-Integrated Hospital of Southern Medical University, Guangzhou, Guangdong, 510315, China
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Huiling Diao
- Department of Nephrology, TCM-Integrated Hospital of Southern Medical University, Guangzhou, Guangdong, 510315, China
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Meilin Chen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Liqian Chen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Penghui Xie
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Hiu Yee Kwan
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Xiaoshan Zhao
- Department of Nephrology, TCM-Integrated Hospital of Southern Medical University, Guangzhou, Guangdong, 510315, China
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiaomin Sun
- Department of Nephrology, TCM-Integrated Hospital of Southern Medical University, Guangzhou, Guangdong, 510315, China
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
- Department of Traditional Chinese Medicine, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong 510280, China
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Wang J, Lv ZY, Li P, Zhang Y, Li X, Shen DF. Lnc PVT1 facilitates TGF-β1-induced human cardiac fibroblast activation in vitro and ISO-induced myocardial fibrosis in vivo through regulating MYC. Mol Cell Biochem 2024:10.1007/s11010-024-05060-7. [PMID: 38997507 DOI: 10.1007/s11010-024-05060-7] [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: 09/20/2023] [Accepted: 06/29/2024] [Indexed: 07/14/2024]
Abstract
Cardiac fibrosis is a commonly seen pathophysiological process in various cardiovascular disorders, such as coronary heart disorder, hypertension, and cardiomyopathy. Cardiac fibroblast trans-differentiation into myofibroblasts (MFs) is a key link in myocardial fibrosis. LncRNA PVT1 participates in fibrotic diseases in multiple organs; however, its role and mechanism in cardiac fibrosis remain largely unknown. Human cardiac fibroblasts (HCFs) were stimulated with TGF-β1 to induce myofibroblast; Immunofluorescent staining, Immunoblotting, and fluorescence in situ hybridization were used to detect the myofibroblasts phenotypes and lnc PVT1 expression. Cell biological phenotypes induced by lnc PVT1 knockdown or overexpression were detected by CCK-8, flow cytometry, and Immunoblotting. A mouse model of myocardial fibrosis was induced using isoproterenol (ISO), and the cardiac functions were examined by echocardiography measurements, cardiac tissues by H&E, and Masson trichrome staining. In this study, TGF-β1 induced HCF transformation into myofibroblasts, as manifested as significantly increased levels of α-SMA, vimentin, collagen I, and collagen III; the expression level of lnc PVT1 expression showed to be significantly increased by TGF-β1 stimulation. The protein levels of TGF-β1, TGFBR1, and TGFBR2 were also decreased by lnc PVT1 knockdown. Under TGF-β1 stimulation, lnc PVT1 knockdown decreased FN1, α-SMA, collagen I, and collagen III protein contents, inhibited HCF cell viability and enhanced cell apoptosis, and inhibited Smad2/3 phosphorylation. Lnc PVT1 positively regulated MYC expression with or without TGF-β1 stimulation; MYC overexpression in TGF-β1-stimulated HCFs significantly attenuated the effects of lnc PVT1 knockdown on HCF proliferation and trans-differentiation to MFs. In the ISO-induced myocardial fibrosis model, lnc PVT1 knockdown partially reduced fibrotic area, improved cardiac functions, and decreased the levels of fibrotic markers. In addition, lnc PVT1 knockdown decreased MYC and CDK4 levels but increased E-cadherin in mice heart tissues. lnc PVT1 is up-regulated in cardiac fibrosis and TGF-β1-stimulated HCFs. Lnc PVT1 knockdown partially ameliorates TGF-β1-induced HCF activation and trans-differentiation into MFs in vitro and ISO-induced myocardial fibrosis in vivo, potentially through interacting with MYC and up-regulating MYC.
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Affiliation(s)
- Juan Wang
- The Second Affiliated Hospital of Xinjiang Medical University, Urumchi, Xinjiang, China
| | - Zhong-Yin Lv
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumchi, Xinjiang, China
| | - Peng Li
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumchi, Xinjiang, China
| | - Yin Zhang
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumchi, Xinjiang, China
| | - Xia Li
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumchi, Xinjiang, China.
- Department of Cardiology, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumchi, 830001, Xinjiang, China.
| | - Di-Fei Shen
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China.
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Shelke V, Kale A, Sankrityayan H, Anders HJ, Gaikwad AB. Long non-coding RNAs as emerging regulators of miRNAs and epigenetics in diabetes-related chronic kidney disease. Arch Physiol Biochem 2024; 130:230-241. [PMID: 34986074 DOI: 10.1080/13813455.2021.2023580] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 12/22/2021] [Indexed: 01/19/2023]
Abstract
Diabetes is one of the major cause of chronic kidney disease (CKD), including "diabetic nephropathy," and is an increasingly prevalent accelerator of the progression of non-diabetic forms of CKD. The long non-coding RNAs (lncRNAs) have come into the limelight in the past few years as one of the emerging weapons against CKD in diabetes. Available data over the past few years demonstrate the interaction of lncRNAs with miRNAs and epigenetic machinery. Interestingly, the evolving data suggest that lncRNAs play a vital role in diabetes-associated CKD by regulation of epigenetic enzymes such as DNA methyltransferase, histone deacetylases, and histone methyltransferases. LncRNAs are also engaged in the regulation of several miRNAs in diabetic nephropathy. Hence this review will elaborate on the association between lncRNAs and their interaction with epigenetic regulators involved in different aspects and thus the progression of CKD in diabetes.
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Affiliation(s)
- Vishwadeep Shelke
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani, India
| | - Ajinath Kale
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani, India
| | - Himanshu Sankrityayan
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani, India
| | - Hans-Joachim Anders
- Division of Nephrology, Department of Internal Medicine IV, University Hospital of the Ludwig Maximilians University Munich, Munich, Germany
| | - Anil Bhanudas Gaikwad
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani, India
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Hu J, Zhang X, Ma F, Huang C, Jiang Y. LncRNA CASC2 Alleviates Renal Interstitial Inflammation and Fibrosis through MEF2C Downregulation-Induced Hinderance of M1 Macrophage Polarization. Nephron Clin Pract 2023; 148:245-263. [PMID: 38142674 DOI: 10.1159/000531919] [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: 08/18/2022] [Accepted: 05/25/2023] [Indexed: 12/26/2023] Open
Abstract
INTRODUCTION Long noncoding RNA (lncRNA) cancer susceptibility candidate 2 (CASC2) alleviates the progression of diabetic nephropathy by inhibiting inflammation and fibrosis. This study investigated how CASC2 impacts renal interstitial fibrosis (RIF) through regulating M1 macrophage (M1) polarization. METHOD Nine-week-old mice underwent unilateral ureteral obstruction (UUO) establishment. Macrophages were induced toward M1 polarization using lipopolysaccharide (LPS) in vitro and cocultured with fibroblasts to examine how M1 polarization influences RIF. LnCeCell predicted that CASC2 interacted with myocyte enhancer factor 2 C (MEF2C), which was validated by dual-luciferase reporter assay. CASC2/MEF2C overexpression was achieved by lentivirus-expressing lncRNA CASC2 injection in vivo or CASC2 and MEF2C transfection in vitro. Renal injury was evaluated through biochemical analysis and hematoxylin-eosin/Masson staining. Macrophage infiltration and M1 polarization in the kidney and/or macrophages were detected by immunofluorescence, flow cytometry, and/or quantitative reverse transcription polymerase chain reaction (qRT-PCR). Expressions of CASC2, MEF2C, and markers related to inflammation/M1/fibrosis in the kidney/macrophages/fibroblasts were analyzed by qRT-PCR, fluorescence in situ hybridization, enzyme-linked immunosorbent assay, and/or Western blot. RESULT In the kidneys of mice, CASC2 was downregulated and macrophage infiltration was promoted time-dependently from days 3 to 14 post-UUO induction; CASC2 overexpression alleviated renal histological abnormalities, hindered macrophage infiltration and M1 polarization, downregulated renal function markers serum creatinine and blood urea nitrogen and inflammation/M1/fibrosis-related makers, and offset UUO-induced MEF2C upregulation. LncRNA CASC2 overexpression inhibited fibroblast fibrosis and M1 polarization in cocultured fibroblasts with LPS-activated macrophages. Also, CASC2 bound to MEF2C and inhibited its expression in LPS-activated macrophages. Furthermore, MEF2C reversed the inhibitory effects of lncRNA CASC2 overexpression. CONCLUSION CASC2 alleviates RIF by inhibiting M1 polarization through directly downregulating MEF2C expression. CASC2 might represent a promising value of future investigations on treatment for RIF.
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Affiliation(s)
- Jinping Hu
- Department of Nephrology, HongHui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Xiaoyan Zhang
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Feng Ma
- Department of Nephrology, HongHui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Chen Huang
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yali Jiang
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Giannuzzi F, Maiullari S, Gesualdo L, Sallustio F. The Mission of Long Non-Coding RNAs in Human Adult Renal Stem/Progenitor Cells and Renal Diseases. Cells 2023; 12:cells12081115. [PMID: 37190024 DOI: 10.3390/cells12081115] [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: 02/20/2023] [Revised: 03/29/2023] [Accepted: 04/06/2023] [Indexed: 05/17/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are a large, heterogeneous class of transcripts and key regulators of gene expression at both the transcriptional and post-transcriptional levels in different cellular contexts and biological processes. Understanding the potential mechanisms of action of lncRNAs and their role in disease onset and development may open up new possibilities for therapeutic approaches in the future. LncRNAs also play an important role in renal pathogenesis. However, little is known about lncRNAs that are expressed in the healthy kidney and that are involved in renal cell homeostasis and development, and even less is known about lncRNAs involved in human adult renal stem/progenitor cells (ARPC) homeostasis. Here we give a thorough overview of the biogenesis, degradation, and functions of lncRNAs and highlight our current understanding of their functional roles in kidney diseases. We also discuss how lncRNAs regulate stem cell biology, focusing finally on their role in human adult renal stem/progenitor cells, in which the lncRNA HOTAIR prevents them from becoming senescent and supports these cells to secrete high quantities of α-Klotho, an anti-aging protein capable of influencing the surrounding tissues and therefore modulating the renal aging.
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Affiliation(s)
- Francesca Giannuzzi
- Department of Interdisciplinary Medicine (DIM), University of Bari Aldo Moro, 70124 Bari, Italy
| | - Silvia Maiullari
- Department of Interdisciplinary Medicine (DIM), University of Bari Aldo Moro, 70124 Bari, Italy
| | - Loreto Gesualdo
- Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari Aldo Moro, 70124 Bari, Italy
- MIRROR-Medical Institute for Regeneration, Repairing and Organ Replacement, Interdepartmental Center, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Fabio Sallustio
- Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari Aldo Moro, 70124 Bari, Italy
- MIRROR-Medical Institute for Regeneration, Repairing and Organ Replacement, Interdepartmental Center, University of Bari Aldo Moro, 70124 Bari, Italy
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Dieter C, Lemos NE, Girardi E, Ramos DT, Pellenz FM, Canani LH, Assmann TS, Crispim D. The rs3931283/PVT1 and rs7158663/MEG3 polymorphisms are associated with diabetic kidney disease and markers of renal function in patients with type 2 diabetes mellitus. Mol Biol Rep 2023; 50:2159-2169. [PMID: 36565414 DOI: 10.1007/s11033-022-08122-5] [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: 07/27/2022] [Accepted: 11/14/2022] [Indexed: 12/25/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) are key regulators of gene expression. Some studies have reported the association of polymorphisms in lncRNA genes with diabetes mellitus (DM) and its chronic complications, including diabetic kidney disease (DKD); however, the results are still inconclusive. Thus, we investigated the association of the rs3200401/MALAT1, rs1894720/MIAT, rs3931283/PVT1, rs11993333/PVT1, rs5749201/TUG1, and rs7158663/MEG3 polymorphisms with DKD in patients with type 2 DM (T2DM). METHODS AND RESULTS This study comprised 902 patients with T2DM and DKD (cases) and 394 patients with T2DM without DKD (controls). The six polymorphisms of interest were genotyped by real-time PCR using TaqMan probes. Frequency of the rs3931283/PVT1 G/G genotype was 36.2% in cases and 31.9% in controls (P = 0.331). After adjustment for gender, glycated hemoglobin, HDL cholesterol, ethnicity, hypertension, and diabetic retinopathy, the G/G genotype was associated with risk for DKD (OR = 1.625, 95% CI 1.020-2.588; P = 0.041). The rs3931283/PVT1 G/G genotype was also associated with higher urinary albumin excretion levels compared to A allele carriers (P = 0.017). No difference was found in rs7158663/MEG3 genotype frequencies between T2DM controls and DKD patients (OR = 1.087, 95% CI 0.686-1.724; P = 0.722). However, the rs7158663/MEG3 G/G genotype was associated with protection against severe DKD (OR = 0.694, 95% CI 0.488-0.989; P = 0.043, for patients with severe DKD vs. T2DM controls). The rs7158663/MEG3 G/G genotype was also associated with lower creatinine levels (P = 0.007) and higher estimated glomerular filtration rate (P = 0.010) compared to A allele carriers. No association was found between the rs11993333/PVT1, rs3200401/MALAT1, rs1894720/MIAT, and rs5749201/TUG1 polymorphisms and DKD or its laboratory markers. CONCLUSION The rs3931283/PVT1 G/G and rs7158663/MEG3 G/G are associated with DKD and markers of renal function in T2DM patients from a Brazilian population.
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Affiliation(s)
- Cristine Dieter
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350; prédio 12; 4° andar, 90035-003, Porto Alegre, Rio Grande do Sul, Brazil.,Graduate Program in Medical Sciences: Endocrinology, Faculty of Medicine, Department of Internal Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Natália Emerim Lemos
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350; prédio 12; 4° andar, 90035-003, Porto Alegre, Rio Grande do Sul, Brazil.,Department of Biochemistry, Institute of Chemistry, Universidade de São Paulo, São Paulo, Brazil
| | - Eliandra Girardi
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350; prédio 12; 4° andar, 90035-003, Porto Alegre, Rio Grande do Sul, Brazil
| | - Denise Taurino Ramos
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350; prédio 12; 4° andar, 90035-003, Porto Alegre, Rio Grande do Sul, Brazil
| | - Felipe Mateus Pellenz
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350; prédio 12; 4° andar, 90035-003, Porto Alegre, Rio Grande do Sul, Brazil.,Graduate Program in Medical Sciences: Endocrinology, Faculty of Medicine, Department of Internal Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luís Henrique Canani
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350; prédio 12; 4° andar, 90035-003, Porto Alegre, Rio Grande do Sul, Brazil.,Graduate Program in Medical Sciences: Endocrinology, Faculty of Medicine, Department of Internal Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Taís Silveira Assmann
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350; prédio 12; 4° andar, 90035-003, Porto Alegre, Rio Grande do Sul, Brazil.,Graduate Program in Medical Sciences: Endocrinology, Faculty of Medicine, Department of Internal Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Daisy Crispim
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350; prédio 12; 4° andar, 90035-003, Porto Alegre, Rio Grande do Sul, Brazil. .,Graduate Program in Medical Sciences: Endocrinology, Faculty of Medicine, Department of Internal Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
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Chen Y, Huang C, Duan ZB, Chen YX, Xu CY. LncRNA NEAT1 accelerates renal fibrosis progression via targeting miR-31 and modulating RhoA/ROCK signal pathway. Am J Physiol Cell Physiol 2023; 324:C292-C306. [PMID: 36440854 DOI: 10.1152/ajpcell.00382.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Renal fibrosis is the final pathway for chronic kidney disease to end-stage renal failure. Noncoding RNAs have been reported to play a crucial role in renal fibrosis. Here, the effects of long noncoding RNA (lncRNA) nuclear-enriched abundant transcript 1 (NEAT1) and miR-31 on renal fibrosis and their regulatory mechanism were evaluated. RT-qPCR was used to assess NEAT1, miR-31, and RhoA levels. Western blot was performed to analyze the expression of fibrosis markers, RhoA, rho-related kinase (ROCK1), and connective tissue growth factor (CTGF). RNA immunoprecipitation (RIP), fluorescence in situ hybridization (FISH), and luciferase reporter assays verified the interaction between miR-31 and NEAT1 or RhoA. Renal fibrosis and injury were observed by Masson and hematoxylin and eosin (H&E) staining. The expression level of inflammatory cytokines was detected by ELISA. Immunohistochemistry (IHC) was performed to examine the expression levels of α-smooth muscle actin (α-SMA) and RhoA in renal tissues. We showed that NEAT1 was highly expressed, whereas miR-31 was decreased in renal fibrosis. NEAT1 was found to directly bind miR-31 to positively regulate RhoA expression. Furthermore, NEAT1 silencing inhibited renal fibrosis and inflammation and suppressed the RhoA/ROCK1 signaling pathway. However, knockdown of miR-31 could reverse these effects. NEAT1 silencing or overexpression of miR-31 alleviated renal fibrosis in vivo. In conclusion, NEAT1 accelerates renal fibrosis progression via negative regulation of miR-31 and the activation of RhoA/ROCK1 pathway, thereby upregulating the expression level of CTGF, providing a theoretical basis for treatment and prognostic evaluation of renal fibrosis.
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Affiliation(s)
- Yan Chen
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chong Huang
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhi-Bin Duan
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yan-Xia Chen
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Cheng-Yun Xu
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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Mok H, Al-Jumaily A, Lu J. Plasmacytoma Variant Translocation 1 (PVT1) Gene as a Potential Novel Target for the Treatment of Diabetic Nephropathy. Biomedicines 2022; 10:2711. [PMID: 36359234 PMCID: PMC9687488 DOI: 10.3390/biomedicines10112711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/08/2022] [Accepted: 10/21/2022] [Indexed: 01/29/2024] Open
Abstract
Introduction: Diabetic nephropathy (DN), a severe microvascular complication in patients with diabetes, is clinically characterized by progressive decline in glomerular filtration rate (GFR). DN is the most common cause of end-stage renal disease (ESRD), and has a consistently high mortality rate. Despite the fact that the prevalence of DN is increasing worldwide, the molecular mechanism underlying the pathogenesis of DN is not fully understood. Previous studies indicated PVT1 as a key determinant of ESRD as well as a mediator of extracellular matrix (ECM) accumulation in vitro. More investigations into the role of PVT1 in DN development are needed. Objectives: To study the effect of PVT1 silencing on progression of DN in diabetic male C57BL/6 mice at early, intermediate and relatively advanced ages. Methods: Diabetic mice were treated with either scramble-siRNA (DM + siRNA (scramble)) or PVT1-siRNA (DM + siRNA (PVT1)), whereas the control mice were normal mice without siRNA injection (Control). Blood, urine and kidney were collected at the age of 9 (young), 16 (middle-aged) or 24 (old) weeks old. Kidney function, histology and molecular gene expression were evaluated. Results: Our findings showed that silencing of PVT1 reduced kidney hypertrophy, proteinuria (UAE, UACR, UPE, UPCR), serum creatinine, serum TGF-β1, serum insulin decline, glomerular and mesangial areas, and increased creatinine clearance in diabetic mice to levels closer to the age-matched controls. Also, silencing of PVT1 markedly suppressed the upregulation of PAI-1, TGF-β1, FN1, COL4A1, and downregulation of BMP7. Conclusion: Silencing of PVT1 ameliorates DN in terms of kidney function and histology in diabetic mice. The renoprotection is attributed to the reduction in ECM accumulation, TGF-β1 elevation and insulin decline. PVT1 is suggested to play an important role in ECM accumulation which makes it a possible target for the treatment of DN.
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Affiliation(s)
- Helen Mok
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1142, New Zealand
| | - Ahmed Al-Jumaily
- School of Engineering, Computer and Mathematical Sciences, Faculty of Design and Creative Technologies, Auckland University of Technology, Auckland 1142, New Zealand
| | - Jun Lu
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1142, New Zealand
- Maurice Wilkins Centre for Molecular Discovery, Auckland 1142, New Zealand
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- College of Food Engineering and Nutrition Sciences, Shaanxi Normal University, Xi’an 710119, China
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China
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Liu C, Ma K, Zhang Y, He X, Song L, Chi M, Han Z, Li G, Zhang Q, Liu C. Kidney diseases and long non-coding RNAs in the limelight. Front Physiol 2022; 13:932693. [PMID: 36299256 PMCID: PMC9589442 DOI: 10.3389/fphys.2022.932693] [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: 04/30/2022] [Accepted: 09/21/2022] [Indexed: 11/13/2022] Open
Abstract
The most extensively and well-investigated sequences in the human genome are protein-coding genes, while large numbers of non-coding sequences exist in the human body and are even more diverse with more potential roles than coding sequences. With the unveiling of non-coding RNA research, long-stranded non-coding RNAs (lncRNAs), a class of transcripts >200 nucleotides in length primarily expressed in the nucleus and rarely in the cytoplasm, have drawn our attention. LncRNAs are involved in various levels of gene regulatory processes, including but not limited to promoter activity, epigenetics, translation and transcription efficiency, and intracellular transport. They are also dysregulated in various pathophysiological processes, especially in diseases and cancers involving genomic imprinting. In recent years, numerous studies have linked lncRNAs to the pathophysiology of various kidney diseases. This review summarizes the molecular mechanisms involved in lncRNAs, their impact on kidney diseases, and associated complications, as well as the value of lncRNAs as emerging biomarkers for the prevention and prognosis of kidney diseases, suggesting their potential as new therapeutic tools.
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Affiliation(s)
- Chenxin Liu
- Reproductive and Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Kuai Ma
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yunchao Zhang
- Reproductive and Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xing He
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Linjiang Song
- Reproductive and Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Mingxuan Chi
- Department of Nephrology, Sichuan Academy of Medical Science and Sichuan Provincial People’s Hospital, Sichuan Renal Disease Clinical Research Center, University of Electronic Science and Technology of China, Chengdu, China
- Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Zhongyu Han
- Reproductive and Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Guanhua Li
- Department of Cardiovascular Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
- *Correspondence: Guanhua Li, ; Qinxiu Zhang, ; Chi Liu,
| | - Qinxiu Zhang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Guanhua Li, ; Qinxiu Zhang, ; Chi Liu,
| | - Chi Liu
- Department of Nephrology, Sichuan Academy of Medical Science and Sichuan Provincial People’s Hospital, Sichuan Renal Disease Clinical Research Center, University of Electronic Science and Technology of China, Chengdu, China
- Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
- *Correspondence: Guanhua Li, ; Qinxiu Zhang, ; Chi Liu,
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Hu T, Chen F, Chen D, Liang H. DNMT3a negatively regulates PTEN to activate the PI3K/AKT pathway to aggravate renal fibrosis. Cell Signal 2022; 96:110352. [PMID: 35523401 DOI: 10.1016/j.cellsig.2022.110352] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/26/2022] [Accepted: 04/30/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Renal fibrosis has become one of the major diseases threatening global public health and harming human life and health. PTEN methylation plays an important role in fibrotic diseases of many organs. However, the relationship between PTEN methylation and renal fibrosis is still elusive. METHODS In the present study, we established a unilateral ureteral obstruction (UUO) mouse model in vivo and a transforming growth factor β1 (TGF-β1)-stimulated renal tubular epithelial cell (HK-2) model in vitro. The degree of renal interstitial fibrosis was detected by haematoxylin-eosin (HE) staining and Masson's trichrome staining. Western blot (WB), qRT-PCR, immunohistochemistry (IHC) and methylation-specific PCR (MSP) analyses were used to determine the mechanism by which PTEN methylation regulates renal fibrosis. The α-SMA fibrosis marker was detected by immunofluorescence (IF). Additionally, the relationship of PTEN and DNMT3a in UUO was determined by ChIP-qRT-PCR. RESULTS Our results showed that the promoter region of PTEN was methylated in UUO. Compared to the sham group, the expression of PTEN was significantly reduced in the UUO group. However, the demethylation reagent significantly inhibited epithelial-mesenchymal transition (EMT), which showed increased expression of E-cadherin and decreased expression of α-SMA and fibronectin. Moreover, treatment of HK-2 cells with 5-aza-dc reversed the activation of the TGF-β1-induced PI3K/AKT signalling pathway, which inhibited renal fibrosis. WB analysis demonstrated that TGF-β1 inhibited the PTEN protein expression level and DNMT3a knockdown reversed the inhibitory effect of TGF-β1 on PTEN expression. Furthermore, ChIP-qRT-PCR showed that DNMT3a interacted with PTEN. Finally, we found that DNMT3a negatively regulated PTEN to activate the PI3K/AKT signalling pathway and aggravate renal fibrosis in vitro and in vivo. CONCLUSION In summary, these results indicated that renal fibrosis is related to the downregulation of PTEN. Additionally, DNMT3a negatively regulates PTEN to activate the PI3K/AKT signalling pathway and induce EMT in renal tubular epithelial cells, thereby aggravating renal fibrosis.
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Affiliation(s)
- Taotao Hu
- Department of Nephrology, Wuhan No.1 Hospital, Wuhan, 430022, China
| | - Fang Chen
- Department of Nephrology, Wuhan No.1 Hospital, Wuhan, 430022, China
| | - Dan Chen
- Department of Nephrology, Wuhan No.1 Hospital, Wuhan, 430022, China
| | - Hongqing Liang
- Department of Nephrology, Wuhan No.1 Hospital, Wuhan, 430022, China..
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Su H, Xie J, Wen L, Wang S, Chen S, Li J, Qi C, Zhang Q, He X, Zheng L, Wang L. LncRNA Gas5 regulates Fn1 deposition via Creb5 in renal fibrosis. Epigenomics 2021; 13:699-713. [PMID: 33876672 DOI: 10.2217/epi-2020-0449] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Aim: Although studies on lncRNAs in renal fibrosis have focused on target genes and functions of lncRNAs, a comprehensive interaction analysis of lncRNAs is lacking. Materials & methods: Differentially expressed genes in renal fibrosis were screened, and the interaction between lncRNAs and miRNAs was searched. Results: We constructed a ceRNA network associated with renal fibrosis, by which we found the transcription factor Creb5, a target gene of lncRNA Gas5 that might regulate extracellular Fn1 deposition. Conclusion: Our study not only provides a theoretical basis for the ceRNA regulation mechanism of Gas5 but also provides experimental evidence supporting the use of Gas5 targeting in the treatment of renal fibrosis.
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Affiliation(s)
- Huanhou Su
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Jingzhou Xie
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Lijing Wen
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Shunyi Wang
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Sishuo Chen
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Jiangchao Li
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Cuiling Qi
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Qianqian Zhang
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Xiaodong He
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Lingyun Zheng
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
| | - Lijing Wang
- School of Life Sciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, P.R. China
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