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Zhang J, Jiang T, Liang X, Shu S, Xiang X, Zhang W, Guo T, Xie W, Deng W, Tang X. lncRNA MALAT1 mediated high glucose-induced HK-2 cell epithelial-to-mesenchymal transition and injury. J Physiol Biochem 2019; 75:443-452. [PMID: 31388927 DOI: 10.1007/s13105-019-00688-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 05/26/2019] [Indexed: 01/10/2023]
Abstract
Epithelial-to-mesenchymal transition (EMT) and injury of tubular cells play critical roles in the pathogenesis of diabetic nephropathy (DN). lncRNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been shown to be involved in DN progression. However, whether MALAT1 induces EMT and injury in tubular cells is unclear. Here, we investigated the effects of MALAT1 on human proximal tubular cells (HK-2 cells) and the underlying mechanism. We performed qPCR to detect MALAT1, E-cadherin, α-smooth muscle actin (α-SMA), kidney injury molecule 1 (KIM-1), and neutrophil gelatinase-associated lipocalin (NGAL). Additionally, we conducted Western blot analyses to measure E-cadherin, α-SMA, cyclin D1, c-Myc, and β-catenin in HK-2 cells cultured with normal glucose and high glucose (HG) and in transfected cells or cells treated with LiCl and DKK-1. The β-catenin localization was observed using immunofluorescence, and the protein levels of NGAL and KIM-1 were evaluated by ELISA. We found that HG-upregulated MALAT1 decreased E-cadherin and increased α-SMA, KIM-1, NGAL, cyclin D1, c-Myc, and β-catenin in HK-2 cells. LiCl exposure increased the expression of α-SMA but decreased that of E-cadherin on the base of knocking down MALAT1, and decreased NGAL and KIM-1 expression. DKK-1 showed the opposite effects. Our results suggested that upregulated MALAT1 induced EMT in HG-treated HK-2 cells through activating the Wnt/β-catenin pathway. However, MALAT1-mediated injury in HK-2 cells was not mediated by activation of the Wnt/β-catenin pathway. Our results indicate that MALAT1 might serve as a novel therapeutic target for suppressing the progression of DN.
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Affiliation(s)
- Jun Zhang
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
| | - Tingting Jiang
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Province, 530021, China
| | - Xiujie Liang
- Department of Medicine/Physiology, University of Fribourg, Chemin du Musée 5, 1700, Fribourg, Switzerland
| | - Shuangshuang Shu
- Department of Nephrology, Nanfang Hospital of Southern Medical University, Guangzhou, Guangdong Province, China
| | - Xiaohong Xiang
- Department of Nephrology, Second Xiangya Hospital of Central South University, Changsha, Hunan Province, China
| | - Wenying Zhang
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
| | - Tingting Guo
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
| | - Wei Xie
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
| | - Weiqian Deng
- Department of Nephrology, Fifth Affiliated Hospital of Southern Medical University, 566 Congcheng Road, Conghua District, Guangzhou, 510900, Guangdong, People's Republic of China.
| | - Xun Tang
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China.
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Chen W, Peng R, Sun Y, Liu H, Zhang L, Peng H, Zhang Z. The topological key lncRNA H2k2 from the ceRNA network promotes mesangial cell proliferation in diabetic nephropathyviathe miR‐449a/b/Trim11/Mek signaling pathway. FASEB J 2019; 33:11492-11506. [DOI: 10.1096/fj.201900522r] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Wenyun Chen
- Molecular Medicine and Cancer Research CenterChongqing Medical UniversityChongqingChina
| | - Rui Peng
- Department of BioinformaticsChongqing Medical UniversityChongqingChina
| | - Yan Sun
- Molecular Medicine and Cancer Research CenterChongqing Medical UniversityChongqingChina
| | - Handeng Liu
- Molecular Medicine and Cancer Research CenterChongqing Medical UniversityChongqingChina
| | - Luyu Zhang
- Molecular Medicine and Cancer Research CenterChongqing Medical UniversityChongqingChina
| | - Huimin Peng
- Molecular Medicine and Cancer Research CenterChongqing Medical UniversityChongqingChina
| | - Zheng Zhang
- Molecular Medicine and Cancer Research CenterChongqing Medical UniversityChongqingChina
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153
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Toraih EA, Abdelghany AA, Abd El Fadeal NM, Al Ageeli E, Fawzy MS. Deciphering the role of circulating lncRNAs: RNCR2, NEAT2, CDKN2B-AS1, and PVT1 and the possible prediction of anti-VEGF treatment outcomes in diabetic retinopathy patients. Graefes Arch Clin Exp Ophthalmol 2019; 257:1897-1913. [DOI: 10.1007/s00417-019-04409-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 06/17/2019] [Accepted: 06/29/2019] [Indexed: 12/13/2022] Open
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154
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Han N, Tian W, Yu N, Yu L. YAP1 is required for the angiogenesis in retinal microvascular endothelial cells via the inhibition of MALAT1‐mediated miR‐200b‐3p in high glucose‐induced diabetic retinopathy. J Cell Physiol 2019; 235:1309-1320. [PMID: 31313295 DOI: 10.1002/jcp.29047] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/12/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Ning Han
- Department of Ophthalmology The Second Hospital of Jilin University Changchun P.R. China
| | - Wen Tian
- Department of Blood Transfusion The Second Hospital of Jilin University Changchun P.R. China
| | - Na Yu
- Department of Blood Transfusion The Second Hospital of Jilin University Changchun P.R. China
| | - Li Yu
- Department of Ophthalmology The Second Hospital of Jilin University Changchun P.R. China
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155
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Long Non-Coding RNAs in Kidney Disease. Int J Mol Sci 2019; 20:ijms20133276. [PMID: 31277300 PMCID: PMC6650856 DOI: 10.3390/ijms20133276] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/30/2019] [Accepted: 07/01/2019] [Indexed: 02/01/2023] Open
Abstract
Non-coding RNA species contribute more than 90% of all transcripts and have gained increasing attention in the last decade. One of the most recent members of this group are long non-coding RNAs (lncRNAs) which are characterized by a length of more than 200 nucleotides and a lack of coding potential. However, in contrast to this simple definition, lncRNAs are heterogenous regarding their molecular function—including the modulation of small RNA and protein function, guidance of epigenetic modifications and a role as enhancer RNAs. Furthermore, they show a highly tissue-specific expression pattern. These aspects already point towards an important role in cellular biology and imply lncRNAs as players in development, health and disease. This view has been confirmed by numerous publications from different fields in the last years and has raised the question as to whether lncRNAs may be future therapeutic targets in human disease. Here, we provide a concise overview of the current knowledge on lncRNAs in both glomerular and tubulointerstitial kidney disease.
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156
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Long noncoding RNA: an emerging player in diabetes and diabetic kidney disease. Clin Sci (Lond) 2019; 133:1321-1339. [PMID: 31221822 DOI: 10.1042/cs20190372] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/16/2019] [Accepted: 05/29/2019] [Indexed: 02/07/2023]
Abstract
Diabetic kidney disease (DKD) is among the most common complications of diabetes mellitus (DM), and remains the leading cause of end-stage renal diseases (ESRDs) in developed countries, with no definitive therapy yet available. It is imperative to decipher the exact mechanisms underlying DKD and identify novel therapeutic targets. Burgeoning evidence indicates that long non-coding RNAs (lncRNAs) are essential for diverse biological processes. However, their roles and the mechanisms of action remain to be defined in disease conditions like diabetes and DKD. The pathogenesis of DKD is twofold, so is the principle of treatments. As the underlying disease, diabetes per se is the root cause of DKD and thus a primary focus of therapy. Meanwhile, aberrant molecular signaling in kidney parenchymal cells and inflammatory cells may directly contribute to DKD. Evidence suggests that a number of lncRNAs are centrally involved in development and progression of DKD either via direct pathogenic roles or as indirect mediators of some nephropathic pathways, like TGF-β1, NF-κB, STAT3 and GSK-3β signaling. Some lncRNAs are thus likely to serve as biomarkers for early diagnosis or prognosis of DKD or as therapeutic targets for slowing progression or even inducing regression of established DKD. Here, we elaborated the latest evidence in support of lncRNAs as a key player in DKD. In an attempt to strengthen our understanding of the pathogenesis of DKD, and to envisage novel therapeutic strategies based on targeting lncRNAs, we also delineated the potential mechanisms of action as well as the efficacy of targeting lncRNA in preclinical models of DKD.
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157
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Zhang Y, Wang J, Zhang Y, Wei J, Wu R, Cai H. Overexpression of long noncoding RNA Malat1 ameliorates traumatic brain injury induced brain edema by inhibiting AQP4 and the NF-κB/IL-6 pathway. J Cell Biochem 2019; 120:17584-17592. [PMID: 31218751 DOI: 10.1002/jcb.29025] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 04/23/2019] [Accepted: 04/29/2019] [Indexed: 01/20/2023]
Abstract
Brain edema is a major traumatic brain injury (TBI)-related neurological complication. In the initiation stage of TBI, brain edema is characterized by astrocyte swelling (cytotoxic edema). We studied the impact of a long noncoding RNA, Malat1, on the TBI-induced astrocyte swelling and brain edema. Our results showed that Malat1 was downregulated in both the TBI rat model and the astrocyte fluid percussion injury (FPI) model, which concurred with brain edema and astrocyte swelling. Overexpression of Malat1 significantly inhibited rat brain edema, meanwhile reducing interleukin-6 (IL-6), nuclear factor-κB (NF-κB), and aquaporin 4 (AQP4) expression after TBI. In addition, overexpression of Malat1 ameliorated FPI-induced astrocyte swelling and reduced IL-6 release. Quantitative real-time polymerase chain reaction and Western blot analysis also corroborated the inhibitory effects of Malat1 on NF-κB and AQP4 expression after FPI. Our results highlighted the protective effects of Malat1 on the TBI-induced brain edema, which were mediated through regulating IL-6, NF-κB, and AQP4 expression. Our study could provide a novel approach for TBI treatment.
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Affiliation(s)
- Yamin Zhang
- Department of Neurology, Gansu Provincial Hospital, Lanzhou, Gansu, People's Republic of China
| | - Jianping Wang
- Emergency Department, Gansu Provincial Hospital, Lanzhou, Gansu, People's Republic of China
| | - Yi Zhang
- Department of Neurology, Gansu Provincial Hospital, Lanzhou, Gansu, People's Republic of China
| | - Jia Wei
- Youth League Committee, Gansu Provincial Hospital, Lanzhou, Gansu, People's Republic of China
| | - Ruipeng Wu
- Department of Neurology, Gansu Provincial Hospital, Lanzhou, Gansu, People's Republic of China
| | - Hui Cai
- General Surgery Clinical Medicine Center, Gansu Provincial Hospital, Lanzhou, Gansu, People's Republic of China
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158
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lncRNA MALAT1 Accelerates Wound Healing of Diabetic Mice Transfused with Modified Autologous Blood via the HIF-1α Signaling Pathway. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 17:504-515. [PMID: 31344658 PMCID: PMC6658834 DOI: 10.1016/j.omtn.2019.05.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 05/29/2019] [Accepted: 05/29/2019] [Indexed: 12/13/2022]
Abstract
Impaired wound healing is a debilitating complication of diabetes. The long non-coding RNA (lncRNA) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been recognized to be differentially expressed in various diseases. However, its underlying mechanism in diabetes has not been fully understood. Notably, we aim to examine the expression of MALAT1 in diabetic mice and its role in wound healing involving the hypoxia-inducible factor-1α (HIF-1α) signaling pathway with a modified autologous blood preservative solution reported. A mouse model of diabetes was established. MALAT1 was identified to promote the activation of the HIF-1α signaling pathway and to be enriched in autologous blood through modified preservation, which might facilitate the improvement of physiological function of blood cells. Through gain- or loss-of-function approaches, viability of fibroblasts cultured in high glucose, wound healing of mice, and collagen expression in wound areas were enhanced by MALAT1 and HIF-1α. Taken together, the present study demonstrated that the physiological status of mouse blood was effectively improved by modified autologous blood preservation, which exhibited upregulated MALAT1, thereby accelerating the fibroblast activation and wound healing in diabetic mice via the activation of the HIF-1α signaling pathway. The upregulation of MALAT1 activating the HIF-1α signaling pathway provides a novel insight into drug targets against diabetes.
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159
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Kar S, Kambis TN, Mishra PK. Hydrogen sulfide-mediated regulation of cell death signaling ameliorates adverse cardiac remodeling and diabetic cardiomyopathy. Am J Physiol Heart Circ Physiol 2019; 316:H1237-H1252. [PMID: 30925069 PMCID: PMC6620689 DOI: 10.1152/ajpheart.00004.2019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/18/2019] [Accepted: 03/28/2019] [Indexed: 02/07/2023]
Abstract
The death of cardiomyocytes is a precursor for the cascade of hypertrophic and fibrotic remodeling that leads to cardiomyopathy. In diabetes mellitus (DM), the metabolic environment of hyperglycemia, hyperlipidemia, and oxidative stress causes cardiomyocyte cell death, leading to diabetic cardiomyopathy (DMCM), an independent cause of heart failure. Understanding the roles of the cell death signaling pathways involved in the development of cardiomyopathies is crucial to the discovery of novel targeted therapeutics and biomarkers for DMCM. Recent evidence suggests that hydrogen sulfide (H2S), an endogenous gaseous molecule, has cardioprotective effects against cell death. However, very little is known about signaling by which H2S and its downstream targets regulate myocardial cell death in the DM heart. This review focuses on H2S in the signaling of apoptotic, autophagic, necroptotic, and pyroptotic cell death in DMCM and other cardiomyopathies, abnormalities in H2S synthesis in DM, and potential H2S-based therapeutic strategies to mitigate myocardial cell death to ameliorate DMCM.
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Affiliation(s)
- Sumit Kar
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center , Omaha, Nebraska
| | - Tyler N Kambis
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center , Omaha, Nebraska
| | - Paras K Mishra
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center , Omaha, Nebraska
- Department of Anesthesiology, University of Nebraska Medical Center , Omaha, Nebraska
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160
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Non-coding RNA-Associated ceRNA Networks in a New Contrast-Induced Acute Kidney Injury Rat Model. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 17:102-112. [PMID: 31234008 PMCID: PMC6595412 DOI: 10.1016/j.omtn.2019.05.011] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 12/22/2022]
Abstract
Contrast-induced acute kidney injury (CI-AKI) is a severe complication of intravascular applied radial contrast media, and recent progress in interventional therapy and angiography has revived interest in explaining detailed mechanisms and developing effective treatment. Recent studies have indicated a potential link between CI-AKI and microRNA (miRNA). However, the potential non-coding RNA-associated-competing endogenous RNA (ceRNA) pairs involved in CI-AKI still remain unclear. In this study, we systematically explored the circRNA or lncRNA-associated-ceRNA mechanism in a new rat model of CI-AKI through deep RNA sequencing. The results revealed that the expression of 38 circRNAs, 12 lncRNAs, 13 miRNAs and 127 mRNAs were significantly dysregulated. We performed Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses for mRNAs with significantly different expression and then constructed comprehensive circRNA or lncRNA-associated ceRNA networks in kidney of CI-AKI rats. Thereafter, two constructed ceRNA regulatory pathways in this CI-AKI rat model—novel_circ_0004153/rno-miR-144-3p/Gpnmb or Naglu and LNC_000343/rno-miR-1956-5p/KCP—were validated by real-time qPCR. This study is the first one to provide a systematic dissection of non-coding RNA-associated ceRNA profiling in kidney of CI-AKI rats. The selected non-coding RNA-associated ceRNA networks provide new insight for the underlying mechanism and may profoundly affect the diagnosis and therapy of CI-AKI.
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161
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RNA-Binding Proteins HuB, HuC, and HuD are Distinctly Regulated in Dorsal Root Ganglia Neurons from STZ-Sensitive Compared to STZ-Resistant Diabetic Mice. Int J Mol Sci 2019; 20:ijms20081965. [PMID: 31013625 PMCID: PMC6514878 DOI: 10.3390/ijms20081965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 04/14/2019] [Accepted: 04/19/2019] [Indexed: 02/07/2023] Open
Abstract
The neuron-specific Elav-like Hu RNA-binding proteins were described to play an important role in neuronal differentiation and plasticity by ensuring the post-transcriptional control of RNAs encoding for various proteins. Although Elav-like Hu proteins alterations were reported in diabetes or neuropathy, little is known about the regulation of neuron-specific Elav-like Hu RNA-binding proteins in sensory neurons of dorsal root ganglia (DRG) due to the diabetic condition. The goal of our study was to analyze the gene and protein expression of HuB, HuC, and HuD in DRG sensory neurons in diabetes. The diabetic condition was induced in CD-1 adult male mice with single-intraperitoneal injection of streptozotocin (STZ, 150 mg/kg), and 8-weeks (advanced diabetes) after induction was quantified the Elav-like proteins expression. Based on the glycemia values, we identified two types of responses to STZ, and mice were classified in STZ-resistant (diabetic resistant, glycemia < 260 mg/dL) and STZ-sensitive (diabetic, glycemia > 260 mg/dL). Body weight measurements indicated that 8-weeks after STZ-induction of diabetes, control mice have a higher increase in body weight compared to the diabetic and diabetic resistant mice. Moreover, after 8-weeks, diabetic mice (19.52 ± 3.52 s) have longer paw withdrawal latencies in the hot-plate test than diabetic resistant (11.36 ± 1.92 s) and control (11.03 ± 1.97 s) mice, that correlates with the installation of warm hypoalgesia due to the diabetic condition. Further on, we evidenced the decrease of Elav-like gene expression in DRG neurons of diabetic mice (Elavl2, 0.68 ± 0.05 fold; Elavl3, 0.65 ± 0.01 fold; Elavl4, 0.53 ± 0.07 fold) and diabetic resistant mice (Ealvl2, 0.56 ± 0.07 fold; Elavl3, 0.32 ± 0.09 fold) compared to control mice. Interestingly, Elav-like genes have a more accentuated downregulation in diabetic resistant than in diabetic mice, although hypoalgesia was evidenced only in diabetic mice. The Elav-like gene expression changes do not always correlate with the Hu protein expression changes. To detail, HuB is upregulated and HuD is downregulated in diabetic mice, while HuB, HuC, and HuD are downregulated in diabetic resistant mice compared to control mice. To resume, we demonstrated HuD downregulation and HuB upregulation in DRG sensory neurons induced by diabetes, which might be correlated with altered post-transcriptional control of RNAs involved in the regulation of thermal hypoalgesia condition caused by the advanced diabetic neuropathy.
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162
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Abdulle LE, Hao JL, Pant OP, Liu XF, Zhou DD, Gao Y, Suwal A, Lu CW. MALAT1 as a Diagnostic and Therapeutic Target in Diabetes-Related Complications: A Promising Long-Noncoding RNA. Int J Med Sci 2019; 16:548-555. [PMID: 31171906 PMCID: PMC6535662 DOI: 10.7150/ijms.30097] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 02/08/2019] [Indexed: 02/06/2023] Open
Abstract
Diabetes mellitus is a global issue with increasing incidence rate worldwide. In an uncontrolled case, it can advance to various organ-related complications leading to an increase in morbidity and mortality. Long non-coding RNA (lncRNA) Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) appears to be a fairly novel lncRNA that is relevant to diabetes and its role in diabetic-related diseases initiation and progression have long been a subject of attention to many scholars. The expression of MALAT1 is elevated in different diabetic-related diseases. In this review, we demonstrate the various functions of MALAT1 in the different diabetes-related complications including ischemic reperfusion injury, retinopathy, cataract, atherosclerosis, cardiomyopathy, non-alcoholic steatohepatitis, gastroparesis, kidney disease, and gestational diabetes. The emerging evidence showed that the role of MALAT1 in diabetic-related complications is both pro-inflammatory and apoptosis in different cell types. These results concluded that MALAT1 is a potential diagnostic and future targeted therapy for diabetes-associated complications.
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Affiliation(s)
| | | | | | | | | | - Ying Gao
- Department of Endocrinology, The First Hospital of Jilin University, No. 71 of Xinmin St. Changchun, Jilin Province, 130021, China
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163
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Shang J, Wang S, Jiang Y, Duan Y, Cheng G, Liu D, Xiao J, Zhao Z. Identification of key lncRNAs contributing to diabetic nephropathy by gene co-expression network analysis. Sci Rep 2019; 9:3328. [PMID: 30824724 PMCID: PMC6397236 DOI: 10.1038/s41598-019-39298-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 01/21/2019] [Indexed: 01/13/2023] Open
Abstract
LncRNA is reported to have important role in diabetic nephropathy (DN). Here, we aim to identify key lncRNAs of DN using bioinformatics and systems biological methods. Method: Five microarray data sets from Gene Expression Omnibus (GEO) database were included. Probe sets were re-annotated. In the training set, differential expressed genes (DEGs) were identified. Weighted gene co-expression network analysis (WGCNA) was constructed to screen diabetic-related hub genes and reveal their potential biological function. Two more human data sets and mouse data sets were used as validation sets. Results: A total of 424 DEGs, including 10 lncRNAs, were filtered in the training data set. WGCNA and enrichment analysis of hub genes showed that inflammation and metabolic disorders are prominent in DN. Three key lncRNAs (NR_130134.1, NR_029395.1 and NR_038335.1) were identified. These lncRNAs are also differently expressed in another two human data sets. Functional enrichment of the mouse data sets showed consistent changes with that in human, indicating similar changes in gene expression pattern of DN and confirmed confidence of our analysis. Human podocytes and mesangial cells were culture in vitro. QPCR and fluorescence in situ hybridization were taken out to validate the expression and relationship of key lncRNAs and their related mRNAs. Results were also consistent with our analysis. Conclusions: Inflammation and metabolic disorders are prominent in DN. We identify three lncRNAs that are involved in these processes possibly by interacting with co-expressed mRNAs.
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Affiliation(s)
- Jin Shang
- Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, P.R. China
| | - Shuai Wang
- Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, P.R. China
| | - Yumin Jiang
- Department of Emergency, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, P.R. China
| | - Yiqi Duan
- Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, P.R. China
| | - Genyang Cheng
- Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, P.R. China
| | - Dong Liu
- Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, P.R. China
| | - Jing Xiao
- Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, P.R. China
| | - Zhanzheng Zhao
- Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, P.R. China.
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164
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Li Y, Ren D, Xu G. Long noncoding RNA MALAT1 mediates high glucose-induced glomerular endothelial cell injury by epigenetically inhibiting klotho via methyltransferase G9a. IUBMB Life 2019; 71:873-881. [PMID: 30762931 DOI: 10.1002/iub.2009] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 01/05/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Yebei Li
- Department of Nephrology; The Second Affiliated Hospital of Nanchang University; Nanchang China
| | - Daijin Ren
- Department of Nephrology; The Second Affiliated Hospital of Nanchang University; Nanchang China
| | - Gaosi Xu
- Department of Nephrology; The Second Affiliated Hospital of Nanchang University; Nanchang China
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165
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Abstract
PURPOSE OF REVIEW Epigenetic variations have been shown to reveal vulnerability to diabetes and its complications. Although it has become clear that metabolic derangements, especially hyperglycemia, can impose a long-term metabolic memory that predisposes to diabetic complications, the underlying mechanisms remain to be understood. It has been suggested that epigenetics (e.g., histone modification, DNA methylation, and non-coding RNAs) help link metabolic disruption to aberrancies related to diabetic kidney disease (DKD). In this review, we discuss the key findings and advances made in the epigenetic risk profile of DKD and provide perspectives on the emerging topics that implicate epigenetics in DKD. RECENT FINDINGS Epigenetic profiles can be profoundly altered in patients with diabetes, in circulating blood cells as well as in renal tissues. These changes provide useful insight into the mechanisms of diabetic kidney injury and progressive kidney dysfunction. Increasing evidence supports the role of epigenetic regulation in DKD. More studies are needed to elucidate the mechanism and importance of epigenetic changes in the initiation and progression of DKD and to further explore their diagnostic and therapeutic potential in the clinical management of patients with diabetes who have a high risk for DKD.
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Affiliation(s)
- Lixia Xu
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, 1500 E. Duarte Rd., Duarte, CA, 91010, USA
- Division of Nephrology, Guangdong Academy of Medical Science and Guangdong General Hospital, 106 Zhongshan Er Rd, Guangzhou, 510080, China
| | - Rama Natarajan
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, 1500 E. Duarte Rd., Duarte, CA, 91010, USA
| | - Zhen Chen
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, 1500 E. Duarte Rd., Duarte, CA, 91010, USA.
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166
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Song Z, Zhang Y, Gong B, Xu H, Hao Z, Liang C. Long noncoding RNA LINC00339 promotes renal tubular epithelial pyroptosis by regulating the miR-22-3p/NLRP3 axis in calcium oxalate-induced kidney stone. J Cell Biochem 2019; 120:10452-10462. [PMID: 30614043 DOI: 10.1002/jcb.28330] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 11/28/2018] [Indexed: 12/29/2022]
Abstract
This study aims to investigate the role of long noncoding RNA (lncRNA) long intergenic nonprotein coding RNA 339 (LINC00339) in regulating renal tubular epithelial pyroptosis in kidney stones and to explore the underlying mechanism. The human renal proximal tubular epithelial (HK-2) cells were treated with calcium oxalate monohydrate (COM) for 72 hours to establish the cell model of renal tubular injury. Relative expression of LINC00339 and miR-22-3p was measured by real-time quantitative reverse transcription polymerase chain reaction. Expression of pyroptosis-related molecules was measured by Western blot analysis (NLRP3, ASC, and cleaved caspase-1 p10) and enzyme-linked immunosorbent assay (interleukin-1β [IL-1β] and IL-18). Pyroptosis was also determined by lactate dehydrogenase release and active caspase-1-propidium iodide double staining. Luciferase reporter assays were performed to verify whether miR-22-3p could bind to LINC00339 or NLRP3. We observed increased LINC00339, decreased miR-22-3p, NLRP3 inflammasome activation, and enhanced cell pyroptosis in COM-treated HK-2 cells. Furthermore, overexpression of both LINC00339 and NLRP3 activated NLRP3 inflammasome and promoted pyroptosis in COM-treated HK-2 cells, whereas miR-22-3p mimic and NLRP3 knockdown exerted the opposite effects. Mechanically, LINC00339 functioned as a competitive endogenous RNA by sponging miR-22-3p to facilitate NLRP3 expression. In conclusion, lncRNA LINC00339 promotes cell pyroptosis by sponging miR-22-3p to regulate NLRP3 expression in COM-treated HK-2 cells.
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Affiliation(s)
- Zhengyao Song
- Department of Urology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Yangyang Zhang
- Department of Urology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Binbin Gong
- Department of Urology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Hanjiang Xu
- Department of Urology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Zongyao Hao
- Department of Urology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Chaozhao Liang
- Department of Urology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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Tian D, Shi X, Zhao Y, Peng X, Zou L, Xu L, Ma Y, Wen Y, Faulhaber-Walter R, Chen L. The effect of A1 adenosine receptor in diabetic megalin loss with caspase-1/IL18 signaling. Diabetes Metab Syndr Obes 2019; 12:1583-1596. [PMID: 31695457 PMCID: PMC6717852 DOI: 10.2147/dmso.s215531] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 07/16/2019] [Indexed: 12/18/2022] Open
Abstract
PURPOSE In our previous study, exacerbation of albuminuria was observed in A1 adenosine receptor knockout (A1AR-/-) mice with diabetic nephropathy (DN), but the mechanism was unclear. Here, we investigated the relationship of megalin loss and albuminuria, to identify the protective effect of A1AR in megalin loss associated albuminuria by inhibiting pyroptosis-related caspase-1/IL-18 signaling of DN. METHODS We successfully collected DN patients' samples and built diabetes mice models induced by streptozotocin. Megalin, cubilin, and A1AR expression were detected in kidney tissue samples from DN patients and mice through immunohistochemical and immunofluorescent staining. A1AR, caspase-1, interleukin-18 (IL-18) expression were analyzed using Western blotting in wild-type and A1AR -/- mice. Human renal proximal tubular epithelial cells (PTC) were cultured with high glucose to observe the effect of A1AR agonist and antagonist on caspase-1/IL-18 and megalin injury. RESULTS The loss of megalin, co-localized with A1AR at PTC, was associated with the level of albuminuria in diabetic patients and mice. The injury of megalin-cubilin was accompanied with the A1AR upregulation (1.30±0.1 vs 0.98±0.2, P=0.042), the caspase-1 (1.33±0.1 vs 1.0±0.2, P=0.036), and IL-18 (1.26±0.2 vs 0.96±0.2, P=0.026) signaling activation in mice with DN. More severe pathological injury, 24 hrs urine albumin excretion (170.8±4.1 μg/d vs 132.0±2.9 μg/d vs 17.9±2.8 μg/d, P<0.001) and megalin-cubilin loss were observed in A1AR -/- DN mice with more pronounced caspase-1 (1.52±0.03 vs 1.20±0.01, P=0.017) and IL-18 (1.42±0.02 vs 1.21±0.02, P=0.018) secretion. High glucose could stimulate the secretion of caspase-1 (1.72 times, P≤0.01) and IL-18 (1.64 times, P≤0.01), which was abolished by A1AR agonist and aggravated by A1AR antagonist. CONCLUSION A1AR played a protective role in proximal tubular megalin loss associated albuminuria by inhibiting the pyroptosis-related caspase-1/IL-18 signaling in DN.
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Affiliation(s)
- Dongli Tian
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
| | - Xiaoxiao Shi
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
| | - Yumo Zhao
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
| | - Xiaoyan Peng
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
| | - Linfeng Zou
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
| | - Lubin Xu
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
| | - Ying Ma
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
| | - Yubin Wen
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
| | | | - Limeng Chen
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing100730, People’s Republic of China
- Correspondence: Limeng ChenDepartment of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Road 1 Shuaifuyuan, Wangfujing Street, Beijing100730, People’s Republic of ChinaTel +86 106 915 5351Fax +86 106 915 5058Email
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Li Y, Xu K, Xu K, Chen S, Cao Y, Zhan H. Roles of Identified Long Noncoding RNA in Diabetic Nephropathy. J Diabetes Res 2019; 2019:5383010. [PMID: 30891461 PMCID: PMC6390257 DOI: 10.1155/2019/5383010] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 01/28/2019] [Indexed: 02/06/2023] Open
Abstract
Diabetes mellitus is the leading chronic disease in the world, and diabetic nephropathy (DN) as one of its complications could increase the mortality. The development of DN is associated to abnormal hemodynamic factors like cytokine networks and the intervention of metabolic risk factors like blood pressure, blood glucose, and blood lipid. However, the pathogenesis of DN is still poorly understood. Although glucose-lowering drugs and insulins have significant effects on blood glucose, the fluctuation of blood glucose or other risk factors could continuously damage the kidney. Recent studies reported that the progression of DN is closely related to the expression of long noncoding RNA (lncRNA), which is important for the early diagnosis and targeted intervention of DN. In this review, we briefly summarize the published studies on the functions and potential mechanism of reported lncRNA in the regulation of DN.
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Affiliation(s)
- Yan Li
- The First Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075 Sichuan, China
| | - Keyang Xu
- Zhejiang Chinese Medical University, Hangzhou, 310053 Zhejiang, China
| | - Kechen Xu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000 Zhejiang, China
| | - Sixiang Chen
- Zhejiang Chinese Medical University, Hangzhou, 310053 Zhejiang, China
| | - Yifang Cao
- The First Hospital of Jiaxing, Jiaxing, 314001 Zhejiang, China
| | - Huakui Zhan
- The First Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075 Sichuan, China
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169
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Song Y, Miao C, Wang J. LncRNA ZEB1-AS1 inhibits renal fibrosis in diabetic nephropathy by regulating the miR-217/MAFB axis. RSC Adv 2019; 9:30389-30397. [PMID: 35557748 PMCID: PMC9088285 DOI: 10.1039/c9ra05602e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 08/20/2019] [Indexed: 12/12/2022] Open
Abstract
Diabetic nephropathy (DN) is a common chronic microvascular complication of diabetes, characterized by the deposition of extracellular matrix (ECM) proteins.
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Affiliation(s)
- Yan Song
- Department of Nephrology
- People's Hospital of Rizhao
- Rizhao
- China
| | - Chunxia Miao
- Department of Nephrology
- People's Hospital of Rizhao
- Rizhao
- China
| | - Jianwen Wang
- Department of Nephrology
- People's Hospital of Rizhao
- Rizhao
- China
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170
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Ji E, Kim C, Kim W, Lee EK. Role of long non-coding RNAs in metabolic control. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2018; 1863:194348. [PMID: 30594638 DOI: 10.1016/j.bbagrm.2018.12.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 12/21/2018] [Indexed: 02/07/2023]
Abstract
Long non-coding RNAs (lncRNAs) have emerged as pivotal regulators of gene expression by influencing various biological processes including proliferation, apoptosis, differentiation, and senescence. Accumulating evidence implicates lncRNAs in the maintenance of metabolic homeostasis; dysregulation of certain lncRNAs promotes the progression of metabolic disorders such as diabetes, obesity, and cardiovascular diseases. In this review, we discuss our understanding of lncRNAs implicated in metabolic control, focusing on in particular diseases arising from chronic inflammation, insulin resistance, and lipid homeostasis. We have analyzed lncRNAs and their molecular targets involved in the pathogenesis of chronic liver disease, diabetes, and obesity, and have discussed the rising interest in lncRNAs as diagnostic and therapeutic targets improving metabolic homeostasis. This article is part of a Special Issue entitled: ncRNA in control of gene expression edited by Kotb Abdelmohsen.
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Affiliation(s)
- Eunbyul Ji
- Department of Biochemistry, The Catholic University of Korea College of Medicine, Seoul 06591, South Korea
| | - Chongtae Kim
- Department of Biochemistry, The Catholic University of Korea College of Medicine, Seoul 06591, South Korea
| | - Wook Kim
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Eun Kyung Lee
- Department of Biochemistry, The Catholic University of Korea College of Medicine, Seoul 06591, South Korea.
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171
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Song Y, Yang L, Guo R, Lu N, Shi Y, Wang X. Long noncoding RNA MALAT1 promotes high glucose-induced human endothelial cells pyroptosis by affecting NLRP3 expression through competitively binding miR-22. Biochem Biophys Res Commun 2018; 509:359-366. [PMID: 30591217 DOI: 10.1016/j.bbrc.2018.12.139] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 12/18/2018] [Indexed: 11/28/2022]
Abstract
Cell death and inflammation play critical roles in atherosclerosis. Pyroptosis, a novel proinflammatory programmed cell death process, participates in atherosclerosis pathogenesis. Recently, MALAT1 was identified as a pyroptosis-related long noncoding RNA (lncRNA). Here, we investigated the potential role and underlying mechanism of lncRNA MALAT1 in endothelial cells pyroptosis. We first established an endothelial cell pyroptosis model by stimulating EA.hy926 human endothelial cells (EA.hy926 cells) with high glucose. Then, we investigated lncRNA MALAT1 expression and found that it was upregulated in high glucose-treated EA.hy926 cells. Furthermore, lncRNA MALAT1 knockdown significantly inhibited high glucose-induced pyroptosis in EA.hy926 cells, which may critically influence atherosclerosis. Moreover, miR-22 was a target of lncRNA MALAT1 and was negatively correlated with lncRNA MALAT1. NLRP3 expression was significantly suppressed by transfection with a MALAT1-targeting antisense oligonucleotide (ASO). Ultimately, miR-22 overexpression abrogated the effect of MALAT1 on high glucose-induced EA.hy926 cells pyroptosis. Together, our results suggest that lncRNA MALAT1 promotes high glucose-induced pyroptosis of endothelial cells partly by affecting NLRP3 expression through competitively binding miR-22. Our findings indicate a new regulatory mechanism for endothelial cells pyroptosis under high-glucose stress, providing a novel therapeutic target for atherosclerosis.
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Affiliation(s)
- Yaxian Song
- Department of Postgraduate, Kunming Medical University, Yunnan, 650500, China
| | - Lixia Yang
- Department of Cardiology, The 920th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, Yunnan, China.
| | - Ruiwei Guo
- Department of Cardiology, The 920th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, Yunnan, China
| | - Nihong Lu
- Department of Postgraduate, Kunming Medical University, Yunnan, 650500, China
| | - Yankun Shi
- Department of Cardiology, The 920th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, Yunnan, China
| | - Xianmei Wang
- Department of Cardiology, The 920th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, Yunnan, China
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Abstract
Purpose The research of long non-coding RNAs (lncRNAs) has become a new passion with the discovery of abundant new lncRNAs and extensive investigation of their roles in various diseases, especially in cancers. Metastasis associated in lung adenocarcinoma transcript 1 (MALAT1) emerges as a hotspot, which has been reported to be involved in dysregulation of cell signaling and closely correlated with cancer development, progression, and response to therapy. This review is a brief update of the current knowledge related to the role of MALAT1 in cancer-associated molecular pathways and pathophysiology and possible determinants for MALAT1 to function as a biomarker, aiming to stimulate the basic investigation of lncRNA MALAT1 as well as its translation to clinical applications. Methods We have selected vast literature from electronic databases including studies associated with its clinical significance and the pivotal functions in cancer processes such as cell proliferation, apoptosis, metastasis, immunity, angiogenesis, and drug resistance. Results Studies have shown that aberrant expression of MALAT1 is related to cancer pathophysiology with the potential to be translated clinically and MALAT1 can regulate cancer processes by interacting with molecules, such as proteins, RNAs and DNAs, and further altering different signal pathways. Conclusion MALAT1 lncRNA promises to be a potential biomarker for cancer diagnosis as well as prognosis. Additionally, it might be a therapeutic target for human cancers.
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Affiliation(s)
- Zhi-Xing Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Qiong-Ni Zhu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Hai-Bo Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Yang Hu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Guo Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Yuan-Shan Zhu
- Department of Medicine, Weill Cornell Medicine, New York, NY, 10065, USA,
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Yang YL, Hu F, Xue M, Jia YJ, Zheng ZJ, Li Y, Xue YM. Early growth response protein-1 upregulates long noncoding RNA Arid2-IR to promote extracellular matrix production in diabetic kidney disease. Am J Physiol Cell Physiol 2018; 316:C340-C352. [PMID: 30462533 DOI: 10.1152/ajpcell.00167.2018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Diabetic kidney disease (DKD) has surpassed chronic glomerulonephritis as the leading cause of end-stage renal disease. Previously, we showed that early growth response protein-1 (Egr1) plays a key role in DKD by enhancing mesangial cell proliferation and extracellular matrix (ECM) production. The long noncoding RNA (lncRNA) AT-rich interactive domain 2-IR (Arid2-IR) has been identified as a mothers against decapentaplegic homolog 3 (Smad3)-associated lncRNA in unilateral ureteral obstructive kidney disease. However, the effect of Egr1 on Arid2-IR in the development of DKD is still unknown. In this study, we found that Arid2-IR was increased in mice with high-fat diet and streptozotocin-induced type 2 diabetes and in mouse mesangial cells cultured with high glucose to mimic diabetes. Knockdown of Arid2-IR in mouse mesangial cells reduced the high expression levels of collagen-α1(I) (Col1a1) and α-smooth muscle actin (α-SMA) induced by high glucose. Furthermore, Arid2-IR expression changed the increased expression of Col1a1 and α-SMA caused by overexpression of Egr1. Overall, these data suggest that increased Arid2-IR likely contributes to ECM production in DKD and that Egr1 promotes ECM production in DKD partly by upregulating Arid2-IR. Thus, Arid2-IR may be a new target in the treatment of DKD.
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Affiliation(s)
- Yan-Lin Yang
- Department of Endocrinology and Metabolism, Nanfang Hospital, Southern Medical University , Guangzhou , China
| | - Fang Hu
- Department of Endocrinology and Metabolism, The Fifth Affiliated Hospital of Sun Yat-Sen University , Zhuhai , China
| | - Meng Xue
- Department of Endocrinology and Metabolism, Shenzhen People's Hospital, Second Affiliated Hospital of Jinan University , Shenzhen , China
| | - Yi-Jie Jia
- Department of Endocrinology and Metabolism, Nanfang Hospital, Southern Medical University , Guangzhou , China
| | - Zong-Ji Zheng
- Department of Endocrinology and Metabolism, Nanfang Hospital, Southern Medical University , Guangzhou , China
| | - Yang Li
- Department of Geriatrics, Zhu Jiang Hospital, Southern Medical University , Guangzhou , China
| | - Yao-Ming Xue
- Department of Endocrinology and Metabolism, Nanfang Hospital, Southern Medical University , Guangzhou , China
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Zhang L, Wang Y, Wang L, Yin G, Li W, Xian Y, Yang W, Liu Q. miR-23c suppresses tumor growth of human hepatocellular carcinoma by attenuating ERBB2IP. Biomed Pharmacother 2018; 107:424-432. [DOI: 10.1016/j.biopha.2018.07.155] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/26/2018] [Accepted: 07/31/2018] [Indexed: 12/17/2022] Open
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175
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The Possibility and Molecular Mechanisms of Cell Pyroptosis After Cerebral Ischemia. Neurosci Bull 2018; 34:1131-1136. [PMID: 30306532 DOI: 10.1007/s12264-018-0294-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 08/01/2018] [Indexed: 01/01/2023] Open
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176
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Gong W, Zhu G, Li J, Yang X. LncRNA MALAT1 promotes the apoptosis and oxidative stress of human lens epithelial cells via p38MAPK pathway in diabetic cataract. Diabetes Res Clin Pract 2018; 144:314-321. [PMID: 29936249 DOI: 10.1016/j.diabres.2018.06.020] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 06/08/2018] [Accepted: 06/19/2018] [Indexed: 11/21/2022]
Abstract
BACKGROUND LncRNAs are involved in various biological processes and disorders. We aimed to investigate the role of lncRNA MALAT1 deregulation in the pathogenic mechanism of diabetic cataract (DC). METHODS The expression of MALAT1 in the tissues and cells was detected by qRT-PCR. The levels of SP1, p38 and apoptosis-related protein were assessed by Western blot assay. Chromatin immunoprecipitation assay and Dual luciferase assay were performed to evaluate the relationship between SP1 and MALAT1. The viability and apoptosis of human lens epithelial cells (HLECs) were analyzed by MTT assay and flow cytometry. The levels of malonyldialdehyde (MDA), superoxide dismutase (SOD) and phospholipid hydroperoxide glutathione peroxidase (GSH-Px) were used to examine the level of oxidative stress. RESULTS MALAT1 not only was aberrantly expressed in DC anterior lens capsule tissues and high glucose (HG)-treated HLECs, but also were up-regulated by HG to promote the apoptosis and oxidative stress of HLECs. HG induced the up-regulation of MALAT1 via SP1 binding MALAT1 promoter regions in HLECs. Moreover, p38 was up-regulated in HG-treated HLECs, and knockdown of p38 reversed the effect of MALAT1 over-expression on HLECs. CONCLUSION HG induced the up-regulation of MALAT1 in HLECs via SP1 binding SP1 binding MALAT1, which promoted the apoptosis and oxidative stress of HLECs through the activation of p38MAPK signaling pathway.
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Affiliation(s)
- Weifeng Gong
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Guangyue Zhu
- Department of Ophthalmology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jie Li
- Department of Ophthalmology, The Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Xin Yang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
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Kato M. Noncoding RNAs as therapeutic targets in early stage diabetic kidney disease. Kidney Res Clin Pract 2018; 37:197-209. [PMID: 30254844 PMCID: PMC6147183 DOI: 10.23876/j.krcp.2018.37.3.197] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 07/18/2018] [Accepted: 07/18/2018] [Indexed: 02/01/2023] Open
Abstract
Diabetic kidney disease (DKD) is a major renal complication of diabetes that leads to renal dysfunction and end-stage renal disease (ESRD). Major features of DKD include accumulation of extracellular matrix proteins and glomerular hypertrophy, especially in early stage. Transforming growth factor-β plays key roles in regulation of profibrotic genes and signal transducers such as Akt kinase and MAPK as well as endoplasmic reticulum stress, oxidant stress, and autophagy related to hypertrophy in diabetes. Many drugs targeting the pathogenic signaling in DKD (mostly through protein-coding genes) are under development. However, because of the limited number of protein-coding genes, noncoding RNAs (ncRNAs) including microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) are attracting more attention as potential new drug targets for human diseases. Some miRNAs and lncRNAs regulate each other (by hosting, enhancing transcription from the neighbor, hybridizing each other, and changing chromatin modifications) and create circuits and cascades enhancing the pathogenic signaling in DKD. In this short and focused review, the functional significance of ncRNAs (miRNAs and lncRNAs) in the early stages of DKD and their therapeutic potential are discussed.
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Affiliation(s)
- Mitsuo Kato
- Beckman Research Institute of City of Hope, Duarte, CA, USA
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Lei X, Zhang L, Li Z, Ren J. Astragaloside IV/lncRNA-TUG1/TRAF5 signaling pathway participates in podocyte apoptosis of diabetic nephropathy rats. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:2785-2793. [PMID: 30233141 PMCID: PMC6132489 DOI: 10.2147/dddt.s166525] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Objective This study aims to figure out the mechanism of astragaloside IV (AS-IV) in the protection of podocyte apoptosis in diabetic nephropathy (DN) rats. Materials and methods Streptozotocin (STZ) was used to induce diabetes in rats, and the diabetic rats were treated with 5 mg/kg/d of AS-IV for 12 weeks. Albuminuria level, relative TUG1 and TRAF5 levels, and TRAF5 and cleaved-caspase-3 protein levels were examined by ELISA, quantitative reverse transcription (qRT)-PCR, and Western blot analyses, respectively. The interaction between TUG1 and TRAF5 was confirmed by RNA pull-down and RNA precipitation. TUNEL assay was used to detect podocyte apoptosis. Results Compared with control rats, DN rats had higher albuminuria and TRAF5 levels and lower TUG1 level. AS-IV treatment attenuated albuminuria and TRAF5 levels and improved TUG1 level in DN rats. TUG1 was downregulated and TRAF5 was upregulated in high-glucose-treated MPC5 cells, and AS-IV ameliorated the TUG1 level. In addition, TUG1 interacted with TRAF5, and TUG1 overexpression promoted degradation of TRAF5 protein. Besides, AS-IV modulated TRAF5 expression through regulating TUG1. AS-IV decreased podocyte apoptosis via the TUG1/TRAF5 pathway. Finally, in vivo experiment proved that si-TUG1 abrogated the protective effect of AS-IV on DN. Conclusion AS-IV attenuated podocyte apoptosis and protected diabetic rats from DN via the lncRNA-TUG1/TRAF5 pathway.
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Affiliation(s)
- Xiao Lei
- Traditional Chinese Medicine Department, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan Province, People's Republic of China,
| | - Limei Zhang
- Traditional Chinese Medicine Department, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan Province, People's Republic of China,
| | - Zonglin Li
- Traditional Chinese Medicine Department, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan Province, People's Republic of China,
| | - Jigang Ren
- Traditional Chinese Medicine Department, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan Province, People's Republic of China,
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179
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Dewanjee S, Bhattacharjee N. MicroRNA: A new generation therapeutic target in diabetic nephropathy. Biochem Pharmacol 2018; 155:32-47. [DOI: 10.1016/j.bcp.2018.06.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/20/2018] [Indexed: 12/11/2022]
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180
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Liao K, Xu J, Yang W, You X, Zhong Q, Wang X. The research progress of LncRNA involved in the regulation of inflammatory diseases. Mol Immunol 2018; 101:182-188. [DOI: 10.1016/j.molimm.2018.05.030] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 05/23/2018] [Accepted: 05/31/2018] [Indexed: 02/07/2023]
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181
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Ren G, Zhu J, Li J, Meng X. Noncoding RNAs in acute kidney injury. J Cell Physiol 2018; 234:2266-2276. [PMID: 30146769 DOI: 10.1002/jcp.27203] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 07/16/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Gui‐Ling Ren
- Department of PharmacyThe 105 Hospital of Chinese People’s Liberation ArmyHefei China
| | - Jie Zhu
- Department of PharmacyThe 105 Hospital of Chinese People’s Liberation ArmyHefei China
| | - Jun Li
- Department of PharmacologySchool of Pharmacy, Anhui Medical UniversityHefei China
- Anhui Institute of Innovative Drugs, Anhui Medical UniversityHefei China
| | - Xiao‐Ming Meng
- Department of PharmacologySchool of Pharmacy, Anhui Medical UniversityHefei China
- Anhui Institute of Innovative Drugs, Anhui Medical UniversityHefei China
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182
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Sathishkumar C, Prabu P, Mohan V, Balasubramanyam M. Linking a role of lncRNAs (long non-coding RNAs) with insulin resistance, accelerated senescence, and inflammation in patients with type 2 diabetes. Hum Genomics 2018; 12:41. [PMID: 30139387 PMCID: PMC6107963 DOI: 10.1186/s40246-018-0173-3] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 08/13/2018] [Indexed: 12/17/2022] Open
Abstract
Background Studying epigenetics is expected to provide precious information on how environmental factors contribute to type 2 diabetes mellitus (T2DM) at the genomic level. With the progress of the whole-genome resequencing efforts, it is now known that 75–90% of the human genome was transcribed to generate a series of long non-coding RNAs (lncRNAs). While lncRNAs are gaining widespread attention as potential and robust biomarkers in the genesis as well as progression of several disease states, their clinical relevance and regulatory mechanisms are yet to be explored in the field of metabolic disorders including diabetes. Despite the fact that Asian Indians are highly insulin resistant and more prone to develop T2DM and associated vascular complications, there is virtually lack of data on the role of lncRNAs in the clinical diabetes setting. Therefore, we sought to evaluate a panel of lncRNAs and senescence-inflammation signatures in peripheral blood mononuclear cells (PBMCs) from patients with type 2 diabetes (T2DM; n = 30) compared to individuals with normal glucose tolerance (NGT; n = 32). Results Compared to control subjects, expression levels of lncRNAs in PBMCs from type 2 diabetes patients showed significantly (p < 0.05) increased levels of HOTAIR, MEG3, LET, MALAT1, MIAT, CDKN2BAS1/ANRIL, XIST, PANDA, GAS5, Linc-p21, ENST00000550337.1, PLUTO, and NBR2. In contrast, lncRNA expression patterns of THRIL and SALRNA1 were significantly (p < 0.05) decreased in patients with T2DM compared to control subjects. At the transcriptional level, senescence markers (p53, p21, p16, and β-galactosidase), proinflammatory markers (TNF-α, IL6, MCP1, and IL1-β), and epigenetic signature of histone deacetylase-3 (HDAC3) were significantly (p < 0.05) elevated in patients with type 2 diabetes compared to control subjects. Interestingly, mRNA expression of Sirt1 and telomere length were significantly (p < 0.05) decreased in patients with type 2 diabetes compared to control subjects. Majority of the altered lncRNAs were positively correlated with poor glycemic control, insulin resistance, transcriptional markers of senescence, inflammation, and HDAC3 and negatively correlated with telomere length. Logistic regression analysis revealed a significant association of altered lncRNA signatures with T2DM, but this association was lost after adjusting for insulin resistance (HOMA-IR) and senescence markers. Conclusion Our study provides a clinically relevant evidence for the association of altered lncRNAs with poor glycemic control, insulin resistance, accelerated cellular senescence, and inflammation. Electronic supplementary material The online version of this article (10.1186/s40246-018-0173-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chandrakumar Sathishkumar
- Department of Cell and Molecular Biology and Dr. Rema Mohan High-Throughput Screening (HTS) Lab, Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialties Centre, Gopalapuram, Chennai, 600 086, India
| | - Paramasivam Prabu
- Department of Cell and Molecular Biology and Dr. Rema Mohan High-Throughput Screening (HTS) Lab, Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialties Centre, Gopalapuram, Chennai, 600 086, India
| | - Viswanathan Mohan
- Department of Cell and Molecular Biology and Dr. Rema Mohan High-Throughput Screening (HTS) Lab, Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialties Centre, Gopalapuram, Chennai, 600 086, India
| | - Muthuswamy Balasubramanyam
- Department of Cell and Molecular Biology and Dr. Rema Mohan High-Throughput Screening (HTS) Lab, Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialties Centre, Gopalapuram, Chennai, 600 086, India.
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183
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Lei L, Chen J, Huang J, Lu J, Pei S, Ding S, Kang L, Xiao R, Zeng Q. Functions and regulatory mechanisms of metastasis‐associated lung adenocarcinoma transcript 1. J Cell Physiol 2018; 234:134-151. [PMID: 30132842 DOI: 10.1002/jcp.26759] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 04/26/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Li Lei
- Department of Dermatology, Xiangya Hospital Central South University Changsha Hunan China
- Department of Hunan Key Laboratory of Skin Cancer and Psoriasis Xiangya Hospital, Central South University Changsha Hunan China
| | - Jing Chen
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Jinhua Huang
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Jianyun Lu
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Shiyao Pei
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Shu Ding
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Liyang Kang
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Rong Xiao
- Department of Dermatology Second Xiangya Hospital, Central South University Changsha Hunan China
| | - Qinghai Zeng
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
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184
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Li Z, Yu Z, Meng X, Yu P. LncRNA LINC00968 accelerates the proliferation and fibrosis of diabetic nephropathy by epigenetically repressing p21 via recruiting EZH2. Biochem Biophys Res Commun 2018; 504:499-504. [PMID: 30197001 DOI: 10.1016/j.bbrc.2018.08.048] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 08/06/2018] [Indexed: 12/31/2022]
Abstract
Emerging evidence have indicated the vital roles of long noncoding RNAs (lncRNAs) in the pathophysiological process of diabetic nephropathy. However, the deepgoing mechanism that lncRNAs regulate the diabetic nephropathy pathogenesis is still ambiguous. In present study, we found that lncRNA LINC00968 expression was high-expressed in the diabetic db/db mouse tissue and high-glucose induced mesangial cells. Functional experiments indicated that LINC00968 silencing by siRNAs significantly inhibited the proliferation and cycle progression, and decreased the extracellular matrix (ECM) proteins (fibronectin, collagen IV) expression in the high glucose induced of mesangial cells. RNA immunoprecipitation (RIP) and chromatin immunoprecipitation (ChIP) assay revealed that LINC00968 recruit EZH2 to the promoter of p21 to inhibit its expression. In summary, our results support the conclusion that lncRNA LINC00968 accelerates the proliferation and fibrosis of mesangial cells by epigenetically repressing p21 via recruiting EZH2, providing a novel insight for the diabetic nephropathy pathogenesis.
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Affiliation(s)
- Zhenjin Li
- Department of Diabetic Nephropathy Hemodialysis, The Metabolic Disease Hospital of Tianjin Medical University, Tianjin, 300070, China; Department of Endocrinology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China
| | - Zhiqiang Yu
- Department of Anesthesiology, Tianjin Central Hospital of Gynecology and Obstetrics, Tianjin, 300052, China
| | - Xuying Meng
- Department of Endocrinology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China.
| | - Pei Yu
- Department of Diabetic Nephropathy Hemodialysis, The Metabolic Disease Hospital of Tianjin Medical University, Tianjin, 300070, China.
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185
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Muller AWJ. Aging is an adaptation that selects in animals against disruption of homeostasis. Med Hypotheses 2018; 119:68-78. [PMID: 30122495 DOI: 10.1016/j.mehy.2018.07.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/17/2018] [Accepted: 07/25/2018] [Indexed: 01/10/2023]
Abstract
During evolution, Muller's ratchet permanently generates deleterious germline mutations that eventually must be defused by selection. It seems widely held that cancer and aging-related diseases (ARDs) cannot contribute to this germline gene selection because they tail reproduction and thus occur too late, at the end of the life cycle. Here we posit however that by lessening the offspring's survival by proxy through diminishing parental care, they can still contribute to the selection. The hypothesis in detail: The widespread occurrence of aging in animals suggests that it is an adaptation. But to what benefit? Aging seems to have only drawbacks. In humans, ARDs cause today almost all mortality; they include heart disease, cerebrovascular disease, Alzheimer's disease, kidney disease and cancer. Compensation seems unthinkable. For cancer, the author proposed in a previous study a benefit to the species: purifying selection against deleterious germline genes that when expressed enhance intracellular energy dissipation. This multicausal energy dissipation, posited as the universal origin of cancer initiation, relates to cellular heat generation, disrupted metabolism, and inflammation. The organism reproduces during cancer's dormancy, and when approaching its end of life, the onset of cancer is accelerated in proportion to the cancer-initiating signal. Through cancer, the organism, now a parent, implements the self-actuated programmed death of Skulachev's phenoptosis. This "first death" enhances by proxy the offspring's chance of "second death" (or "double death") through diminished parental care. Repetition over generations realizes a purifying selection against genes causing energy dissipation. The removal of the deleterious germline gene mutations permanently generated by Muller's ratchet gives a benefit. We generalize, motivated by the parallels between cancer and aging, the purifying selection posited for cancer to aging. An ARD would be initiated in the organ by multicausal disruption of homeostasis, and be followed by dormancy and senescence until its onset near the end of the life cycle. Just as for cancer, the ARD eventually enhances double death, and the realized permanent selection gives a benefit to the species through the selection against germ line genes that disrupt homeostasis. Given their similarities, cancer and aging are combined in the posited Unified Cancer-Aging Adaptation (UCAA) model, which may be confirmed by next-generation sequencing data. Also because of the emerging important role of cellular senescence, the hypothesis may guide the development of therapies against both cancer and aging.
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Affiliation(s)
- Anthonie W J Muller
- Synthetic Systems Biology - Nuclear Organization Group, Swammerdam Institute for Life Sciences/University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
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186
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Abstract
Diabetic nephropathy (DN) is currently the leading cause of end-stage renal disease globally. Given the increasing incidence of diabetes, many experts hold the view that DN will eventually progress toward pandemic proportions. Whilst hyperglycaemia-induced vascular dysfunction is the primary initiating mechanism in DN, its progression is also driven by a heterogeneous set of pathological mechanisms, including oxidative stress, inflammation and fibrosis. Current treatment strategies for DN are targeted against the fundamental dysregulation of glycaemia and hypertension. Unfortunately, these standards of care can delay but do not prevent disease progression or the significant emotional, physical and financial costs associated with this disease. As such, there is a pressing need to develop novel therapeutics that are both effective and safe. Set against the genomic era, numerous potential target pathways in DN have been identified. However, the clinical translation of basic DN research has been met with a number of challenges. Moreover, the notion of DN as a purely vascular disease is outdated and it has become clear that DN is a multi-dimensional, multi-cellular condition. The review will highlight the current therapeutic approaches for DN and provide an insight into how the inherent complexity of DN is shaping the research pathways toward the development and clinical translation of novel therapeutic strategies.
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187
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Pan L, Lian W, Zhang X, Han S, Cao C, Li X, Li M. Human circular RNA‑0054633 regulates high glucose‑induced vascular endothelial cell dysfunction through the microRNA‑218/roundabout 1 and microRNA‑218/heme oxygenase‑1 axes. Int J Mol Med 2018; 42:597-606. [PMID: 29693114 DOI: 10.3892/ijmm.2018.3625] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 03/27/2018] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to investigate the relative regulation of human circular RNA‑0054633 (hsa_circ_0054633), microRNA‑218 (miR‑218), roundabout 1 (ROBO1) and heme oxygenase‑1 (HO‑1) in human umbilical vein endothelial cells (HUVECs) in high glucose conditions. Initially, the expression of hsa_circ_0054633 in HUVECs was detected in high glucose conditions by reverse transcription‑quantitative polymerase chain reaction. Next, a small interfering RNA against hsa_circ_0054633 was constructed to investigate the function of jsa_circ_0054633 in HUVECs by transwell migration, cell counting kit‑8, flow cytometry and tube formation assays. In addition, the effect of hsa_circ_0054633 on the expression levels of ROBO1, HO‑1 and vascular endothelial growth factor were examined. The regulation effects of hsa_circ_0054633 on high glucose‑induced HUVEC proliferation, migration, and angiopoiesis were also analyzed. Bioinformatics analysis and dual‑luciferase assay were then used to confirm the direct or specific regulation of hsa_circ_0054633, miR‑218, ROBO1 and HO‑1. It was observed that high glucose levels increased the expression of hsa_circ_0054633, while downregulation of hsa_circRNA‑0054633 increased the high glucose‑induced endothelial cell dysfunction, including proliferation, migration and angiopoiesis suppression. Bioinformatics analysis revealed that the expression of circRNA‑0054633 was able to inhibit miR‑218 expression, which was clarified by the dual‑luciferase assay. It was also demonstrated that downregulating the expression of miR‑218 inhibited the high glucose‑induced endothelial cell dysfunction by promoting the expression of ROBO1 and HO‑1. These results suggest that the expression of hsa_circRNA‑0054633 has a protective effect against high glucose‑induced endothelial cell dysfunction by targeting ROBO1 and HO‑1.
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Affiliation(s)
- Long Pan
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Weishuai Lian
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Xiaojun Zhang
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Shilong Han
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Chuanwu Cao
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Xue Li
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Maoquan Li
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
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188
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Sun Q, Xu H, Xue J, Yang Q, Chen C, Yang P, Han A, Tu Q, Lu J, Gao X, Xiang Q, Liu Q. MALAT1 via microRNA-17 regulation of insulin transcription is involved in the dysfunction of pancreatic β-cells induced by cigarette smoke extract. J Cell Physiol 2018; 233:8862-8873. [PMID: 29856480 DOI: 10.1002/jcp.26800] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 04/30/2018] [Indexed: 01/03/2023]
Abstract
Cigarettes contain various chemicals with the potential to influence metabolic health. Exposure to cigarette smoke causes a dysfunction in pancreatic β-cells and impairs insulin production. However, the mechanisms for cigarette smoke-induced reduction of insulin remain largely unclear. Data from 558 patients with diabetes showed that, with smoking pack-years, homeostatic model assessment (HOMA)-β (a method for assessing β-cell function) decreased and that HOMA of insulin resistance increased. For β-cells (MIN6), cigarette smoke extract (CSE) increased the levels of thioredoxin-interacting protein (TXNIP) and the long noncoding (lnc)RNA, metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), and downregulated the levels of the transcription factor, mafA, and microRNA (miR)-17. MALAT1, one of four lncRNAs predicted to regulate miR-17, was knocked down by small interfering RNA (siRNA). For these cells, an miR-17 mimic inhibited TXNIP and enhanced the production of insulin. Knockdown of MALAT1 induced an increase in miR-17, which suppressed TXNIP and promoted the production of insulin. In the sera of patients with diabetes who smoked, there were higher MALAT1 levels and lower miR-17 levels than in the sera of nonsmokers. Thus, CSE inhibits insulin production by upregulating TXNIP via MALAT1-mediated downregulation of miR-17, which provides an understanding of the processes involved in the reduced β-cells function caused by cigarette smoke.
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Affiliation(s)
- Qian Sun
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hui Xu
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Junchao Xue
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qianlei Yang
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chao Chen
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ping Yang
- School of Public Health, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Aohan Han
- Institute of Chronic Non-Communicable Disease Control, Jiangsu Center for Disease Control and Prevention, Nanjing, Jiangsu, China
| | - Qingyun Tu
- Institute of Chronic Non-Communicable Disease Control, Jiangsu Center for Disease Control and Prevention, Nanjing, Jiangsu, China
| | - Jiachun Lu
- School of Public Health, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xiaohua Gao
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Quanyong Xiang
- Institute of Chronic Non-Communicable Disease Control, Jiangsu Center for Disease Control and Prevention, Nanjing, Jiangsu, China
| | - Qizhan Liu
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
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189
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Sun SF, Tang PMK, Feng M, Xiao J, Huang XR, Li P, Ma RCW, Lan HY. Novel lncRNA Erbb4-IR Promotes Diabetic Kidney Injury in db/db Mice by Targeting miR-29b. Diabetes 2018; 67:731-744. [PMID: 29222368 DOI: 10.2337/db17-0816] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 11/30/2017] [Indexed: 11/13/2022]
Abstract
Transforming growth factor-β/Smad signaling plays an important role in diabetic nephropathy. The current study identified a novel Smad3-dependent long noncoding RNA (lncRNA) Erbb4-IR in the development of type 2 diabetic nephropathy (T2DN) in db/db mice. We found that Erbb4-IR was highly expressed in T2DN of db/db mice and specifically induced by advanced glycosylation end products (AGEs) via a Smad3-dependent mechanism. The functional role of Erbb4-IR in T2DN was revealed by kidney-specific silencing of Erbb4-IR to protect against the development of T2DN, such as elevated microalbuminuria, serum creatinine, and progressive renal fibrosis in db/db mice, and to block AGE-induced collagen I and IV expression in mouse mesangial cells (mMCs) and mouse tubular epithelial cells (mTECs). Mechanistically, we identified that the Erbb4-IR-microRNA (miR)-29b axis was a key mechanism of T2DN because Erbb4-IR was able to bind the 3' untranslated region of miR-29b genomic sequence to suppress miR-29b expression at transcriptional level. In contrast, silencing of renal Erbb4-IR increased miR-29b and therefore protected the kidney from progressive renal injury in db/db mice and prevented mTECs and mMCs from AGE-induced loss of miR-29b and fibrotic response in vitro. Collectively, we identify that Erbb4-IR is a Smad3-dependent lncRNA that promotes renal fibrosis in T2DN by suppressing miR-29b. Targeting Erbb4-IR may represent a novel therapy for T2DN.
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Affiliation(s)
- Si F Sun
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
| | - Patrick M K Tang
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Min Feng
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Nephrology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jun Xiao
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiao R Huang
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ping Li
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
| | - Ronald C W Ma
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Hui Y Lan
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
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190
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Kölling M, Genschel C, Kaucsar T, Hübner A, Rong S, Schmitt R, Sörensen-Zender I, Haddad G, Kistler A, Seeger H, Kielstein JT, Fliser D, Haller H, Wüthrich R, Zörnig M, Thum T, Lorenzen J. Hypoxia-induced long non-coding RNA Malat1 is dispensable for renal ischemia/reperfusion-injury. Sci Rep 2018; 8:3438. [PMID: 29467431 PMCID: PMC5821887 DOI: 10.1038/s41598-018-21720-3] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 02/09/2018] [Indexed: 12/27/2022] Open
Abstract
Renal ischemia-reperfusion (I/R) injury is a major cause of acute kidney injury (AKI). Non-coding RNAs are crucially involved in its pathophysiology. We identified hypoxia-induced long non-coding RNA Malat1 (Metastasis Associated Lung Adenocarcinoma Transcript 1) to be upregulated in renal I/R injury. We here elucidated the functional role of Malat1 in vitro and its potential contribution to kidney injury in vivo. Malat1 was upregulated in kidney biopsies and plasma of patients with AKI, in murine hypoxic kidney tissue as well as in cultured and ex vivo sorted hypoxic endothelial cells and tubular epithelial cells. Malat1 was transcriptionally activated by hypoxia-inducible factor 1-α. In vitro, Malat1 inhibition reduced proliferation and the number of endothelial cells in the S-phase of the cell cycle. In vivo, Malat1 knockout and wildtype mice showed similar degrees of outer medullary tubular epithelial injury, proliferation, capillary rarefaction, inflammation and fibrosis, survival and kidney function. Small-RNA sequencing and whole genome expression analysis revealed only minor changes between ischemic Malat1 knockout and wildtype mice. Contrary to previous studies, which suggested a prominent role of Malat1 in the induction of disease, we did not confirm an in vivo role of Malat1 concerning renal I/R-injury.
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Affiliation(s)
- Malte Kölling
- Department of Nephrology, University Hospital, Zürich, Switzerland.,Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, Hannover, Germany
| | - Celina Genschel
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, Hannover, Germany
| | | | - Anika Hübner
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, Hannover, Germany
| | - Song Rong
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Roland Schmitt
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | | | - George Haddad
- Department of Nephrology, University Hospital, Zürich, Switzerland
| | - Andreas Kistler
- Department of Internal Medicine, Cantonal Hospital Frauenfeld, Frauenfeld, Switzerland
| | - Harald Seeger
- Department of Nephrology, University Hospital, Zürich, Switzerland
| | - Jan T Kielstein
- Department of Nephrology, Städtisches Klinikum Braunschweig GmbH, Braunschweig, Germany
| | - Danilo Fliser
- Saarland University Medical Centre, Homburg/Saar, Germany
| | - Hermann Haller
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Rudolf Wüthrich
- Department of Nephrology, University Hospital, Zürich, Switzerland
| | - Martin Zörnig
- Georg-Speyer-Haus, Institute for Tumor Biology and Experimental Therapy, Frankfurt, Germany
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, Hannover, Germany.,National Heart and Lung Institute, Imperial College London, London, UK.,Excellence Cluster REBIRTH, Hannover Medical School, Hannover, Germany
| | - Johan Lorenzen
- Department of Nephrology, University Hospital, Zürich, Switzerland.
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191
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Moghaddas Sani H, Hejazian M, Hosseinian Khatibi SM, Ardalan M, Zununi Vahed S. Long non-coding RNAs: An essential emerging field in kidney pathogenesis. Biomed Pharmacother 2018; 99:755-765. [PMID: 29710473 DOI: 10.1016/j.biopha.2018.01.122] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 01/13/2018] [Accepted: 01/24/2018] [Indexed: 12/21/2022] Open
Abstract
Human Genome Project has made it clear that a majority of the genome is transcribed into the non-coding RNAs including microRNAs as well as long non-coding RNAs (lncRNAs) which both can affect different features of cells. LncRNAs are long heterogenous RNAs that regulate gene expression and a variety of signaling pathways involved in cellular homeostasis and development. Studies over the past decade have shown that lncRNAs have a major role in the kidney pathogenesis. The effective roles of lncRNAs have been recognized in renal ischemia, injury, inflammation, fibrosis, glomerular diseases, renal transplantation, and renal cell carcinoma. The present review outlines the role and function of lncRNAs in kidney pathogenesis as novel essential regulators. Molecular mechanism insights into the functions of lncRNAs in kidney pathophysiological processes may contribute to effective future therapeutics.
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Affiliation(s)
| | - Mina Hejazian
- Kidney Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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192
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Low-dose Sinapic Acid Abates the Pyroptosis of Macrophages by Downregulation of lncRNA-MALAT1 in Rats With Diabetic Atherosclerosis. J Cardiovasc Pharmacol 2018; 71:104-112. [DOI: 10.1097/fjc.0000000000000550] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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193
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LncRNA MALAT1 sponges miR-133 to promote NLRP3 inflammasome expression in ischemia-reperfusion injured heart. Int J Cardiol 2018; 254:50. [PMID: 29407129 DOI: 10.1016/j.ijcard.2017.10.071] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 10/17/2017] [Indexed: 11/20/2022]
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194
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Raut SK, Khullar M. The Big Entity of New RNA World: Long Non-Coding RNAs in Microvascular Complications of Diabetes. Front Endocrinol (Lausanne) 2018; 9:300. [PMID: 29915562 PMCID: PMC5994400 DOI: 10.3389/fendo.2018.00300] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Accepted: 05/18/2018] [Indexed: 12/14/2022] Open
Abstract
A major part of the genome is known to be transcribed into non-protein coding RNAs (ncRNAs), such as microRNA and long non-coding RNA (lncRNA). The importance of ncRNAs is being increasingly recognized in physiological and pathological processes. lncRNAs are a novel class of ncRNAs that do not code for proteins and are important regulators of gene expression. In the past, these molecules were thought to be transcriptional "noise" with low levels of evolutionary conservation. However, recent studies provide strong evidence indicating that lncRNAs are (i) regulated during various cellular processes, (ii) exhibit cell type-specific expression, (iii) localize to specific organelles, and (iv) associated with human diseases. Emerging evidence indicates an aberrant expression of lncRNAs in diabetes and diabetes-related microvascular complications. In the present review, we discuss the current state of knowledge of lncRNAs, their genesis from genome, and the mechanism of action of individual lncRNAs in the pathogenesis of microvascular complications of diabetes and therapeutic approaches.
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195
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Nutter CA, Kuyumcu-Martinez MN. Emerging roles of RNA-binding proteins in diabetes and their therapeutic potential in diabetic complications. WILEY INTERDISCIPLINARY REVIEWS-RNA 2017; 9. [PMID: 29280295 DOI: 10.1002/wrna.1459] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/19/2017] [Accepted: 11/05/2017] [Indexed: 12/11/2022]
Abstract
Diabetes is a debilitating health care problem affecting 422 million people around the world. Diabetic patients suffer from multisystemic complications that can cause mortality and morbidity. Recent advancements in high-throughput next-generation RNA-sequencing and computational algorithms led to the discovery of aberrant posttranscriptional gene regulatory programs in diabetes. However, very little is known about how these regulatory programs are mis-regulated in diabetes. RNA-binding proteins (RBPs) are important regulators of posttranscriptional RNA networks, which are also dysregulated in diabetes. Human genetic studies provide new evidence that polymorphisms and mutations in RBPs are linked to diabetes. Therefore, we will discuss the emerging roles of RBPs in abnormal posttranscriptional gene expression in diabetes. Questions that will be addressed are: Which posttranscriptional mechanisms are disrupted in diabetes? Which RBPs are responsible for such changes under diabetic conditions? How are RBPs altered in diabetes? How does dysregulation of RBPs contribute to diabetes? Can we target RBPs using RNA-based methods to restore gene expression profiles in diabetic patients? Studying the evolving roles of RBPs in diabetes is critical not only for a comprehensive understanding of diabetes pathogenesis but also to design RNA-based therapeutic approaches for diabetic complications. WIREs RNA 2018, 9:e1459. doi: 10.1002/wrna.1459 This article is categorized under: RNA in Disease and Development > RNA in Disease RNA Processing > Splicing Regulation/Alternative Splicing Translation > Translation Regulation.
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Affiliation(s)
- Curtis A Nutter
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas
| | - Muge N Kuyumcu-Martinez
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas.,Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, Texas.,Institute for Translational Sciences, University of Texas Medical Branch, Galveston, Texas
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196
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He X, Ou C, Xiao Y, Han Q, Li H, Zhou S. LncRNAs: key players and novel insights into diabetes mellitus. Oncotarget 2017; 8:71325-71341. [PMID: 29050364 PMCID: PMC5642639 DOI: 10.18632/oncotarget.19921] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 07/19/2017] [Indexed: 12/14/2022] Open
Abstract
Long non-coding RNAs (LncRNAs) are a class of endogenous RNA molecules, which have a transcribing length of over 200 nt, lack a complete functional open reading frame (ORF), and rarely encode a functional short peptide. Recent studies have revealed that disruption of LncRNAs levels correlates with several human diseases, including diabetes mellitus (DM), a complex multifactorial metabolic disorder affecting more than 400 million people worldwide. LncRNAs are emerging as pivotal regulators in various biological processes, in the progression of DM and its associated complications, involving pancreatic β-cell disorder, insulin resistance, and epigenetic regulation, etc. Further investigation into the mechanisms of action of LncRNAs in DM will be of great value in the thorough understanding of pathogenesis. However, prior to successful application of LncRNAs, further search for molecular biomarkers and drug targets to provide a new strategy for DM prevention, early diagnosis, and therapy is warranted.
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Affiliation(s)
- Xiaoyun He
- Department of Endocrinology, Affiliated Hospital of Guilin Medical University, Guilin 541001, China
- Department of Endocrinology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Chunlin Ou
- Cancer Research Institute, Central South University, Changsha 410078, China
| | - Yanhua Xiao
- Department of Endocrinology, Affiliated Hospital of Guilin Medical University, Guilin 541001, China
| | - Qing Han
- Department of Endocrinology, Affiliated Hospital of Guilin Medical University, Guilin 541001, China
| | - Hao Li
- Department of Neurology, Affiliated Hospital of Guilin Medical University, Guilin 541001, China
| | - Suxian Zhou
- Department of Endocrinology, Affiliated Hospital of Guilin Medical University, Guilin 541001, China
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197
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Liu D, Zhu Y, Pang J, Weng X, Feng X, Guo Y. Knockdown of long non-coding RNA MALAT1 inhibits growth and motility of human hepatoma cells via modulation of miR-195. J Cell Biochem 2017; 119:1368-1380. [PMID: 28722813 DOI: 10.1002/jcb.26297] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Accepted: 07/18/2017] [Indexed: 12/20/2022]
Abstract
The metastasis-associated lung adenocarcinoma transcription 1 (Malat1) is a long non-coding RNA (lncRNA), exerts oncogenic role in multiple cancers, including hepatocellular carcinoma (HCC). This study was aimed to investigate its posttranscriptional regulation in HCC cells. RT-PCR was performed to monitor the expression levels of Malat1 in normal liver and HCC cell lines. The expression of Malat1, microRNA (miR)-195, and epidermal growth factor receptor (EGFR) in HepG2 and MHCC97 cells was respectively or synchronously altered by transfection. Then the changes in cell viability, apoptotic cell rate, cell cycle distribution, migration, and invasion were respectively assessed. As a result, we found that Malat1 was highly expressed in HCC cell lines when compared to normal liver cells. Malat1 silence suppressed HCC cells viability, migration and invasion, induced apoptosis, and arrested more cells in G0/G1 phase. Malat1 acted as a circular endogenous RNA (ceRNA) for miR-195. Malat1 silence could not suppress HCC cell growth and motility when miR-195 was knocked down. EGFR was a direct target of miR-195. miR-195 overexpression could not suppress HCC cell growth and motility when the 3'UTR site of EGFR was overexpressed. Furthermore, Malat1 silence blocked the activation of PI3K/AKT and JAK/STAT pathways, while EGFR overexpression activated them. Our study demonstrates Malat1-miR-195-EGFR axis plays a critical role in HCC cells which provided a better understanding of Malat1 in HCC.
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Affiliation(s)
- Dingli Liu
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Yun Zhu
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Jinke Pang
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Xie Weng
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Xiaorong Feng
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Yabing Guo
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou, China
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