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Current Insights into miRNA and lncRNA Dysregulation in Diabetes: Signal Transduction, Clinical Trials and Biomarker Discovery. Pharmaceuticals (Basel) 2022; 15:ph15101269. [PMID: 36297381 PMCID: PMC9610703 DOI: 10.3390/ph15101269] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/27/2022] [Accepted: 10/09/2022] [Indexed: 01/24/2023] Open
Abstract
Diabetes is one of the most frequently occurring metabolic disorders, affecting almost one tenth of the global population. Despite advances in antihyperglycemic therapeutics, the management of diabetes is limited due to its complexity and associated comorbidities, including diabetic neuropathy, diabetic nephropathy and diabetic retinopathy. Noncoding RNAs (ncRNAs), including microRNAs (miRNAs) and long noncoding RNAs (lncRNAs), are involved in the regulation of gene expression as well as various disease pathways in humans. Several ncRNAs are dysregulated in diabetes and are responsible for modulating the expression of various genes that contribute to the 'symptom complex' in diabetes. We review various miRNAs and lncRNAs implicated in diabetes and delineate ncRNA biological networks as well as key ncRNA targets in diabetes. Further, we discuss the spatial regulation of ncRNAs and their role(s) as prognostic markers in diabetes. We also shed light on the molecular mechanisms of signal transduction with diabetes-associated ncRNAs and ncRNA-mediated epigenetic events. Lastly, we summarize clinical trials on diabetes-associated ncRNAs and discuss the functional relevance of the dysregulated ncRNA interactome in diabetes. This knowledge will facilitate the identification of putative biomarkers for the therapeutic management of diabetes and its comorbidities. Taken together, the elucidation of the architecture of signature ncRNA regulatory networks in diabetes may enable the identification of novel biomarkers in the discovery pipeline for diabetes, which may lead to better management of this metabolic disorder.
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Mittal A, Garg R, Bahl A, Khullar M. Molecular Mechanisms and Epigenetic Regulation in Diabetic Cardiomyopathy. Front Cardiovasc Med 2022; 8:725532. [PMID: 34977165 PMCID: PMC8716459 DOI: 10.3389/fcvm.2021.725532] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 11/15/2021] [Indexed: 12/25/2022] Open
Abstract
Diabetes mellitus (DM) is an important lifestyle disease. Type 2 diabetes is one of the prime contributors to cardiovascular diseases (CVD) and diabetic cardiomyopathy (DbCM) and leads to increased morbidity and mortality in patients with DM. DbCM is a typical cardiac disease, characterized by cardiac remodeling in the presence of DM and in the absence of other comorbidities such as hypertension, valvular diseases, and coronary artery disease. DbCM is associated with defective cardiac metabolism, altered mitochondrial structure and function, and other physiological and pathophysiological signaling mechanisms such as oxidative stress, inflammation, myocardial apoptosis, and autophagy. Epigenetic modifiers are crucial players in the pathogenesis of DbCM. Thus, it is important to explore the role of epigenetic modifiers or modifications in regulating molecular pathways associated with DbCM. In this review, we have discussed the role of various epigenetic mechanisms such as histone modifications (acetylation and methylation), DNA methylation and non-coding RNAs in modulating molecular pathways involved in the pathophysiology of the DbCM.
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Affiliation(s)
- Anupam Mittal
- Department of Translational and Regenerative Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Rajni Garg
- Council of Scientific and Industrial Research - Institute of Microbial Technology, Chandigarh, India
| | - Ajay Bahl
- Department of Cardiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Madhu Khullar
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Wang J, Xin S, Yang R, Jiang J, Qiao Y. Knockdown of lncRNA LUCAT1 attenuates sepsis‑induced myocardial cell injury by sponging miR-642a. Mamm Genome 2021; 32:457-465. [PMID: 34272987 DOI: 10.1007/s00335-021-09890-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/30/2021] [Indexed: 11/25/2022]
Abstract
The heart is one of the most common organs involved in sepsis-induced organ dysfunction and about 50% septic patients complicated with myocardial injury. So far, the molecular mechanisms underlying sepsis-induced cardiac damage remain unclear. In this study we aimed to evaluate the effect of miR-642a on sepsis-induced cardiac injury in vitro and explore the possible lncRNA-microRNA mechanism. We first downloaded GSE101639 to identify differentially expressed genes (DEGs) in sepsis. The expression of miR-642a in LPS-induced H9C2 cells was detected by qRT-PCR. MTT assay, cell migration, flow cytometry analysis, ELISA, qRT-PCR and Western blotting analysis were applied to evaluating the effect of miR-642a mimic on LPS-induced H9C2 cells. The bioinformatics analysis and the rescue experiment were devoted to the underlying mechanism. The results showed miR-642a expression was decreased in septic patients and LPS-induced H9C2 cells. Besides, MiR-642a mimic promoted cell viability and migration, inhibited cell apoptosis of LPS-induced H9C2 cells. Bioinformatics analysis showed miR-642a directly targets with 3'-UTR of ROCK1. Moreover, LUCAT1 regulated ROCK1 expression act as a competing endogenous RNA (ceRNA) for miR-642a. Our data demonstrated that lncRNA LUCAT1 could function via sponging miR-642a to regulate ROCK1 expression in LPS-induced H9C2 cells. And knockdown of lncRNA LUCAT1 could suppress LPS-induced cardiac injury in vitro.
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Affiliation(s)
- Jing Wang
- Department of Critical Care Medicine, Tianjin Union Medical Center, No.190, Jieyuan Road, Hongqiao, Tianjin, 300121, China
| | - Shaobin Xin
- Department of Critical Care Medicine, Tianjin Union Medical Center, No.190, Jieyuan Road, Hongqiao, Tianjin, 300121, China
| | - Rui Yang
- Department of Critical Care Medicine, Tianjin First Central Hospital, Tianjin, 300192, China
| | - Jiawei Jiang
- Department of Critical Care Medicine, Tianjin First Central Hospital, Tianjin, 300192, China
| | - Youjie Qiao
- Department of Critical Care Medicine, Tianjin Union Medical Center, No.190, Jieyuan Road, Hongqiao, Tianjin, 300121, China.
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Guo Y, Feng X, Wang D, Kang X, Zhang L, Ren H, Yuan G. Long Non-coding RNA: A Key Regulator in the Pathogenesis of Diabetic Cardiomyopathy. Front Cardiovasc Med 2021; 8:655598. [PMID: 33889601 PMCID: PMC8057523 DOI: 10.3389/fcvm.2021.655598] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/09/2021] [Indexed: 12/31/2022] Open
Abstract
In recent years, diabetes mellitus has become a global issue with increasing incidence rate worldwide. Diabetic cardiomyopathy (DCM), one of the important complications of diabetes, refers to patients with type 1 and type 2 diabetes who have ventricular hypertrophy, fibrosis and even diastolic dysfunction. The pathogenesis of DCM is related to oxidative stress, inflammatory response, apoptosis, autophagy, myocardial fibrosis and, diabetic microangiopathy. Long non-coding RNAs (lncRNA) is a non-coding RNA with a length longer than 200 nucleotides which lack the ability of protein coding. With the development of molecular technology, massive evidence demonstrates that lncRNA play a critical role in the molecular mechanism of DCM. Moreover, it can also be used as potential diagnostic markers for DCM. In this review, we intend to summarize the pathological roles and molecular mechanism of lncRNA in the progression of diabetic cardiomyopathy, which may provide promising diagnosis and treatment strategies for DCM.
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Affiliation(s)
- Yaoyao Guo
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohui Feng
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dan Wang
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaonan Kang
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lu Zhang
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huihui Ren
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Disease, Wuhan, China
| | - Gang Yuan
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Disease, Wuhan, China
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Knockdown of the Long Noncoding RNA LUCAT1 Inhibits High-Glucose-Induced Epithelial-Mesenchymal Transition through the miR-199a-5p-ZEB1 Axis in Human Renal Tubular Epithelial Cells. BIOMED RESEARCH INTERNATIONAL 2021; 2020:8895003. [PMID: 33426083 PMCID: PMC7781694 DOI: 10.1155/2020/8895003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/30/2020] [Accepted: 12/19/2020] [Indexed: 12/19/2022]
Abstract
Renal fibrosis, the leading cause of end-stage renal disease and in which epithelial-mesenchymal transition (EMT) plays a central role, has a complex pathogenesis that is not fully understood. Therefore, we investigated the role of the long noncoding RNA LUCAT1 in the EMT of renal tubular epithelial cells under high-glucose (HG) conditions and the underlying mechanism involved. In this study, we established HG and normal glucose groups of HK-2 cells by treating HK-2 cells 30.0 or 5.5 mmol/L glucose, respectively. To investigate the roles of LUCAT1 and miR-199a-5p in HG-induced EMT, we transfected the HG group with negative control small interfering RNA (siRNA), siRNA targeting LUCAT1, negative control microRNA, or an miR-199a-5p mimic. The results of the quantitative reverse transcription PCR indicated that the LUCAT1 level in the HG group was increased, whereas the miR-199a-5p level was decreased. The EMT in the cells was induced by treatment with HG but was weakened by LUCAT1 knockdown or miR-199a-5p overexpression, which both also inhibited the HG-induced phosphorylation of SMAD3. Moreover, LUCAT1 and ZEB1 mRNA comprised the same microRNA response elements of miR-199a-5p. LUCAT1 knockdown had no effect on the miR-199a-5p level but decreased the HG-induced upregulation of ZEB1. In conclusion, HG conditions induced the upregulation of LUCAT1, and LUCAT1 knockdown inhibited the EMT in HG-treated HK-2 cells. LUCAT1 likely promotes HG-induced EMT through ZEB1 by sponging miR-199a-5p.
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