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Mahajan N, Luo Q, Abhyankar S, Bhatwadekar AD. Transcriptomic Profile of Lin -Sca1 +c-kit (LSK) cells in db/db mice with long-standing diabetes. BMC Genomics 2024; 25:782. [PMID: 39134978 PMCID: PMC11318115 DOI: 10.1186/s12864-024-10679-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 08/01/2024] [Indexed: 08/16/2024] Open
Abstract
BACKGROUND The Lin-Sca1+c-Kit+ (LSK) fraction of the bone marrow (BM) comprises multipotent hematopoietic stem cells (HSCs), which are vital to tissue homeostasis and vascular repair. While diabetes affects HSC homeostasis overall, the molecular signature of mRNA and miRNA transcriptomic under the conditions of long-standing type 2 diabetes (T2D;>6 months) remains unexplored. METHODS In this study, we assessed the transcriptomic signature of HSCs in db/db mice, a well-known and widely used model for T2D. LSK cells of db/db mice enriched using a cell sorter were subjected to paired-end mRNA and single-end miRNA seq library and sequenced on Illumina NovaSeq 6000. The mRNA sequence reads were mapped using STAR (Spliced Transcripts Alignment to a Reference), and the miRNA sequence reads were mapped to the designated reference genome using the Qiagen GeneGlobe RNA-seq Analysis Portal with default parameters for miRNA. RESULTS We uncovered 2076 out of 13,708 mRNAs and 35 out of 191 miRNAs that were expressed significantly in db/db animals; strikingly, previously unreported miRNAs (miR-3968 and miR-1971) were found to be downregulated in db/db mice. Furthermore, we observed a molecular shift in the transcriptome of HSCs of diabetes with an increase in pro-inflammatory cytokines (Il4, Tlr4, and Tnf11α) and a decrease in anti-inflammatory cytokine IL10. Pathway mapping demonstrated inflammation mediated by chemokine, cytokine, and angiogenesis as one of the top pathways with a significantly higher number of transcripts in db/db mice. These molecular changes were reflected in an overt defect in LSK mobility in the bone marrow. miRNA downstream target analysis unveils several mRNAs targeting leukocyte migration, microglia activation, phagosome formation, and macrophage activation signaling as their primary pathways, suggesting a shift to an inflammatory phenotype. CONCLUSION Our findings highlight that chronic diabetes adversely alters HSCs' homeostasis at the transcriptional level, thus potentially contributing to the inflammatory phenotype of HSCs under long-term diabetes. We also believe that identifying HSCs-based biomarkers in miRNAs or mRNAs could serve as diagnostic markers and potential therapeutic targets for diabetes and associated vascular complications.
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Affiliation(s)
- Neha Mahajan
- Department of Ophthalmology, Indiana University School of Medicine, 1160 W Michigan St, Indianapolis, IN, 46202, USA
| | - Qianyi Luo
- Department of Ophthalmology, Indiana University School of Medicine, 1160 W Michigan St, Indianapolis, IN, 46202, USA
| | - Surabhi Abhyankar
- Department of Ophthalmology, Indiana University School of Medicine, 1160 W Michigan St, Indianapolis, IN, 46202, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN, 46202, USA
| | - Ashay D Bhatwadekar
- Department of Ophthalmology, Indiana University School of Medicine, 1160 W Michigan St, Indianapolis, IN, 46202, USA.
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Mahajan N, Luo Q, Abhyankar S, Bhatwadekar AD. Transcriptomic Profile of Lin - Sca1 + c-kit (LSK) cells in db/db mice with long-standing diabetes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.22.576754. [PMID: 38328165 PMCID: PMC10849703 DOI: 10.1101/2024.01.22.576754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
The Lin - Sca1 + c-Kit + (LSK) fraction comprises multipotent hematopoietic stem cells (HSCs), vital to tissue homeostasis and vascular repair. While HSC homeostasis is impaired in diabetes, it is not known how chronic (>6 months) type 2 diabetes (T2D) alters the HSC transcriptome. Herein, we assessed the transcriptomic signature of HSCs in db/db mice employing mRNA and miRNA sequencing. We uncovered 2076 mRNAs and 35 miRNAs differentially expressed in db/db mice, including two novel miRNAs previously unreported in T2D. Further analysis of these transcripts showed a molecular shift with an increase in the pro-inflammatory cytokines and a decrease in anti-inflammatory cytokine expression. Also, pathway mapping unveiled inflammation and angiogenesis as one of the top pathways. These effects were reflected in bone marrow mobilopathy, retinal microglial inflammation, and neurovascular deficits in db/db mice. In conclusion, our study highlights that chronic diabetes alters HSCs' at the transcriptomic level, thus potentially contributing to overall homeostasis and neurovascular deficits of diabetes, such as diabetic retinopathy. Highlights Bone marrow mobilopathy with long-standing diabetesSwitch in LSK transcriptomic profile towards inflammation and angiogenesisDiscovered 35 miRNAs, including two novel miRNAs, miR-3968 and miR-1971LSK dysfunction reflected in inflammation and neurovascular deficits of the retina.
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Shi Y, Fan X, Zhang K, Ma Y. Association of the endothelial nitric oxide synthase (eNOS) 4a/b polymorphism with the risk of incident diabetic retinopathy in patients with type 2 diabetes mellitus: a systematic review and updated meta-analysis. Ann Med 2023; 55:2226908. [PMID: 37353997 PMCID: PMC10291908 DOI: 10.1080/07853890.2023.2226908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/06/2023] [Accepted: 06/13/2023] [Indexed: 06/25/2023] Open
Abstract
OBJECTIVE To conduct a systematic review and updated meta-analysis on the potential association between endothelial nitric oxide synthase (eNOS) 4a/b polymorphism and the risk of developing diabetic retinopathy (DR) in patients with type 2 diabetes mellitus (T2DM) and to identify possible clinical biomarkers for early screening of DR. MATERIALS AND METHODS A meta-analysis based on case-control or cross-sectional studies was conducted to examine the correlation between eNOS 4a/b polymorphism and DR. Pooled odds ratio (OR) and 95% confidence interval (CI) were used to estimate the association strength. RESULTS We included 19 studies, covering 7838 subjects. An association was observed in Caucasians (allelic model: OR = 1.273, 95% CI: 1.006-1.610, p = .045; recessive model: OR = 0.575, 95% CI: 0.371-0.892, p = .014; dominant model: OR = 1.268, 95% CI: 1.052-1.528, p = .013; homozygote model: OR = 1.833, 95% CI: 1.176-2.856, p = .007). Moreover, population-based studies have indicated an association between eNOS 4a/b polymorphism and DR susceptibility. CONCLUSIONS The present study showed that intron 4a allele of eNOS 4a/b is a risk factor for DR in Caucasians with T2DM. Thus, eNOS 4a/b may be used as a biomarker for the early screening and diagnosis of DR in Caucasian T2DM patients.Key messagesEndothelial nitric oxide synthase 4a/b gene polymorphism is not associated with the risk of developing diabetic retinopathy in the overall population, Asians, or Chinese Han patients with type 2 diabetes. However, 4a is a risk factor for the development of diabetic retinopathy in Caucasians.Endothelial nitric oxide synthase 4a/b gene polymorphism is not associated with the type of diabetic retinopathy.
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Affiliation(s)
- Yushan Shi
- Clinical Medical College, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Xin Fan
- Department of Ophthalmology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Kaiyun Zhang
- Shaanxi Eye Hospital, Xi’an People’s Hospital(Xi’an Fourth Hospital, The People’s Hospital Affiliated to Northwest University), Xi’an, Shaanxi, China
| | - Yaling Ma
- Department of Ophthalmology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China
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Torus B, Korkmaz H, Ozturk KH, Şirin FB, Argun M, Şevik S, Tök L. Downregulation of plasma microRNA-29c-3p expression may be a new risk factor for diabetic retinopathy. Minerva Endocrinol (Torino) 2023; 48:42-50. [PMID: 33213115 DOI: 10.23736/s2724-6507.20.03278-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
BACKGROUND Circulation miRNAs have emerged as new biomarkers for identifying and monitoring the microvascular complications of diabetes. The aim of this study is to evaluate the levels of five candidate miRNAs (miR-29c-3p, miR-18a, miR-31, miR-181 and miR-20a) in patients with diabetic retinopathy (DR) and their relationship with disease severity. METHODS The study included 31 diabetes patients without DR (NDR group), 68 patients with DR (DR group) and 30 healthy controls (HC group). Twenty-five of patients with DR were proliferative DR (PDR group) and 43 were non-proliferative DR (NPDR group) patients. Metabolic parameters and serum vascular endothelial growth factor (VEGF) levels of all participants were measured. Circulating miRNAs levels were determined by quantitative real-time PCR. Fundus examinations of all patients were performed by a single ophthalmologist. RESULTS VEGF levels were significantly higher in the NDR, and DR groups compared to HC group (P=0.011 and P=0.014, respectively). Plasma miR-29c-3p was downregulated in diabetic patients with retinopathy and without retinopathy. This downregulation was more prominent in diabetic patients without retinopathy compared to those with retinopathy (P=0.016). There was no significant difference in plasma levels of miR-18a, miR-20a, miR-18a and miR-31 between diabetic subjects with and without retinopathy (P>0.05). There was no correlation between DR severity and the levels of miRNAs (P>0.05). In multivariate logistic regression analysis, it was found that changes in plasma miR-29c-3p expression of diabetic patients increased DR risk independent of other risk factors. CONCLUSIONS Plasma miR-29c-3p expression is downregulated in diabetic patients with and without retinopathy, and changes in this miRNA are an independent risk factor for the development of DR.
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Affiliation(s)
- Bora Torus
- Department of Internal Medicine, Faculty of Medicine, Suleyman Demirel University, Isparta, Türkiye
| | - Hakan Korkmaz
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Suleyman Demirel University, Isparta, Türkiye -
| | - Kuyaş H Ozturk
- Department of Medical Genetics, Faculty of Medicine, Suleyman Demirel University, Isparta, Türkiye
| | - Fevziye B Şirin
- Department of Biochemistry, Faculty of Medicine, Suleyman Demirel University, Isparta, Türkiye
| | - Mehmet Argun
- Department of Ophthalmology, Faculty of Medicine, Suleyman Demirel University, Isparta, Türkiye
| | - Sonmez Şevik
- Department of Biochemistry, Faculty of Medicine, Suleyman Demirel University, Isparta, Türkiye
| | - Levent Tök
- Department of Ophthalmology, Faculty of Medicine, Suleyman Demirel University, Isparta, Türkiye
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Pandey A, Ajgaonkar S, Jadhav N, Saha P, Gurav P, Panda S, Mehta D, Nair S. Current Insights into miRNA and lncRNA Dysregulation in Diabetes: Signal Transduction, Clinical Trials and Biomarker Discovery. Pharmaceuticals (Basel) 2022; 15:1269. [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] [Grants] [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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Affiliation(s)
| | | | | | - Praful Saha
- Viridis Biopharma Pvt. Ltd., Mumbai 400 022, India
| | - Pranay Gurav
- Viridis Biopharma Pvt. Ltd., Mumbai 400 022, India
| | | | - Dilip Mehta
- Synergia Life Sciences Pvt. Ltd., Mumbai 400 022, India
| | - Sujit Nair
- Viridis Biopharma Pvt. Ltd., Mumbai 400 022, India
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Candidate microRNAs as prognostic biomarkers in heart failure: A systematic review. Rev Port Cardiol 2022; 41:865-885. [DOI: 10.1016/j.repc.2021.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 11/24/2022] Open
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Mir M, Mir R, Alghamdi M, Wani J, Elfaki I, Sabah Z, Alhujaily M, Jeelani M, Marakala V, Alharthi M, Al‑Shahrani A. Potential impact of GCK, MIR-196A-2 and MIR-423 gene abnormalities on the development and progression of type 2 diabetes mellitus in Asir and Tabuk regions of Saudi Arabia. Mol Med Rep 2022; 25:162. [PMID: 35293603 PMCID: PMC8941532 DOI: 10.3892/mmr.2022.12675] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/28/2022] [Indexed: 11/17/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disorder characterized by persistent hyperglycemia and is associated with serious complications. The risk factors for T2DM include both genetic and lifestyle factors. Genome-wide association studies have indicated the association of genetic variations with many diseases, including T2DM. Glucokinase (GCK) plays a key role in the regulation of insulin release in the pancreas and catalyzes the first step in glycolysis in the liver. Genetic alterations in the GCK gene have been implicated in both hyperglycemia and hypoglycemia. MicroRNAs (miRNAs/miRs) are small non-coding RNA molecules that are involved in the important physiological processes including glucose metabolism. In the present study, the association of the single nucleotide polymorphisms (SNPs) in the GCK, MIR-196A-2 and MIR-423 genes with susceptibility to T2DM in patients from two regions of Saudi Arabia were examined, using the tetra-primer amplification refractory mutation system. The results showed that the AA genotype and the A allele of GCK rs1799884 were associated with T2DM [odds ratio (OR)=2.25, P=0.032 and OR=1.55, P=0.021, respectively]. Likewise, the CT genotype and T allele of MIR-196A-2 rs11614913 were associated with an increased risk of T2DM (OR=2.36, P=0.0059 and OR=1.74, P=0.023, respectively). In addition, the CA genotype of MIR-423 rs6505162 C>A was found to be linked with T2DM (OR=2.12 and P=0.021). It was concluded in the present research study that gene variations in GCK, MIR-196A-2 and MIR-423 are potentially associated with an increased risk of T2DM. These results, in the future, may help in the identification and stratification of individuals susceptible to T2DM. Future longitudinal studies with larger sample sizes and in different ethnic populations are recommended to validate these findings.
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Affiliation(s)
- Mohammad Mir
- Department of Basic Medical Sciences, College of Medicine, University of Bisha, Bisha 61922, Kingdom of Saudi Arabia
| | - Rashid Mir
- Prince Fahd Bin Sultan Research Chair, Department of Medical Laboratory Technology (MLT), Faculty of Applied Medical Sciences, University of Tabuk, Tabuk 71491, Kingdom of Saudi Arabia
| | - Mushabab Alghamdi
- Department of Internal Medicine, College of Medicine, University of Bisha, Bisha 61922, Kingdom of Saudi Arabia
| | - Javed Wani
- Department of Internal Medicine College of Medicine, King Khalid University, Abha 61421, Kingdom of Saudi Arabia
| | - Imadeldin Elfaki
- Department of Biochemistry, Faculty of Science, University of Tabuk, Tabuk 71491, Kingdom of Saudi Arabia
| | - Zia Sabah
- Department of Internal Medicine College of Medicine, King Khalid University, Abha 61421, Kingdom of Saudi Arabia
| | - Muhanad Alhujaily
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha 61922, Kingdom of Saudi Arabia
| | - Mohammed Jeelani
- Department of Basic Medical Sciences, College of Medicine, University of Bisha, Bisha 61922, Kingdom of Saudi Arabia
| | - Vijaya Marakala
- Department of Basic Medical Sciences, College of Medicine, University of Bisha, Bisha 61922, Kingdom of Saudi Arabia
| | - Muffarah Alharthi
- Department of Family Medicine, College of Medicine, University of Bisha, Bisha 61922, Kingdom of Saudi Arabia
| | - Abdullah Al‑Shahrani
- Department of Family Medicine, College of Medicine, University of Bisha, Bisha 61922, Kingdom of Saudi Arabia
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Kraczkowska W, Stachowiak L, Pławski A, Jagodziński PP. Circulating miRNA as potential biomarkers for diabetes mellitus type 2: should we focus on searching for sex differences? J Appl Genet 2022; 63:293-303. [PMID: 34984663 PMCID: PMC8979931 DOI: 10.1007/s13353-021-00678-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/18/2021] [Accepted: 12/23/2021] [Indexed: 11/24/2022]
Abstract
microRNAs are non-coding molecules, approximately 22 nucleotides in length, that regulate various cellular processes. A growing body of evidence has suggested that their dysregulated expression is involved in the pathogenesis of diverse diseases, including diabetes mellitus type 2 (DM2). Early onset of this chronic and complex metabolic disorder is frequently undiagnosed, leading to the development of severe diabetic complications. Notably, DM2 prevalence is rising globally and an increasing number of articles demonstrate that DM2 susceptibility, development, and progression differ between males and females. Therefore, this paper discusses the role of microRNAs as a source of novel diagnostic biomarkers for DM2 and aims to underline the importance of sex disparity in biomarkers research. Taking into account an urgent need for the development of sex-specific diagnostic strategies in DM2, recent results have shown that circulating miRNAs are promising candidates for sex-biased biomarkers.
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Affiliation(s)
- Weronika Kraczkowska
- Department of Biochemistry and Molecular Biology, Poznań University of Medical Science, 6 Święcickiego Street, 60-781, Poznan, Poland
| | - Lucyna Stachowiak
- Department of Biochemistry and Molecular Biology, Poznań University of Medical Science, 6 Święcickiego Street, 60-781, Poznan, Poland
| | - Andrzej Pławski
- Institute of Human Genetics, Polish Academy of Sciences, 60-479, Poznan, Poland
| | - Paweł Piotr Jagodziński
- Department of Biochemistry and Molecular Biology, Poznań University of Medical Science, 6 Święcickiego Street, 60-781, Poznan, Poland.
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Pramanik S, Saha C, Chowdhury S, Bose C, Bhattacharyya NP, Mondal LK. Decreased Levels of miR-126 and miR-132 in Plasma and Vitreous Humor of Non-Proliferative Diabetic Retinopathy Among Subjects with Type-2 Diabetes Mellitus. Diabetes Metab Syndr Obes 2022; 15:345-358. [PMID: 35153496 PMCID: PMC8823438 DOI: 10.2147/dmso.s346097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/24/2022] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Diabetic retinopathy (DR), the leading cause of blindness among working adults, is an urgent public health problem as diabetes mellitus (DM) is increasing at an alarming rate. Hyperglycemia-induced endothelial dysfunction is the principal contributing factor leading to the development of microangiopathy. Altered levels of microRNA (miR), the negative regulator of protein-coding genes, have been observed and considered to be markers for DR. Present study aimed to find out whether miR levels in plasma could be effective biomarkers to differentiate between type 2 diabetes mellitus (T2DM) with non-proliferative retinopathy (NPDR) from T2DM with no-DR (DNR). METHODS We recruited 50 T2DM subjects comprising 31 NPDR and 19 DNR individuals. Surrogate markers of systemic oxidative stress and vascular endothelial growth factor (VEGF) were measured in plasma. Levels of miR-126 and miR-132 were determined in plasma and vitreous fluid using real-time PCR. RESULTS We observed that levels of miR-126 and miR-132 were decreased in NPDR subjects in comparison to DNR. Plasma levels of miRs were inversely correlated with secreted levels of VEGF and oxidative stress marker. The levels of these miRs showed discriminating ability between NPDR and DNR. CONCLUSION Circulating miRs 126 and 132 in plasma or vitreous may serve as biomarkers for early diabetic retinopathy risk prediction, provided validated in a larger cohort and other forms of retinal vasculopathy or retinopathy in the future.
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Affiliation(s)
- Subhasish Pramanik
- Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India
| | - Chinmay Saha
- Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India
- Genome Science, School of Interdisciplinary Studies, University of Kalyani, Nadia, 741235, West Bengal, India
| | - Subhankar Chowdhury
- Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India
- Correspondence: Subhankar Chowdhury, Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India, Email
| | - Chiranjit Bose
- Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India
| | - Nitai P Bhattacharyya
- Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India
| | - Lakshmi Kanta Mondal
- Department of Ophthalmology, Regional Institute of Ophthalmology, Medical College Campus, Kolkata, 700 073, West Bengal, India
- Lakshmi Kanta Mondal, Department of Ophthalmology, Regional Institute of Ophthalmology, Medical College Campus, 88, College Street, Kolkata, 700 073, West Bengal, India, Email
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Guo J, Zhou P, Pan M, Liu Z, An G, Han J, Dai F, Du L, Jin X. Relationship between elevated microRNAs and growth factors levels in the vitreous of patients with proliferative diabetic retinopathy. J Diabetes Complications 2021; 35:108021. [PMID: 34420810 DOI: 10.1016/j.jdiacomp.2021.108021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 08/01/2021] [Accepted: 08/10/2021] [Indexed: 01/04/2023]
Abstract
AIM The aim of this study was to identify differentially expressed microRNAs (miRNAs) in the vitreous of patients with proliferative diabetic retinopathy (PDR) and correlate some of them with growth factors. METHODS Vitreous samples were collected from 5 PDR eyes and 5 control eyes, and then miRNAs were assayed with next-generation sequencing (NGS). Three differentially expressed miRNAs were validated in vitreous of another cohort using reverse transcriptase quantitative polymerase chain reaction (RT-qPCR). RESULTS Transforming growth factor β (TGF-β) and vascular endothelial growth factor (VEGF) signaling pathway were excavated out through bioinformatic analysis of deregulated miRNAs. The expression of hsa-miR-24-3p, hsa-miR-197-3p and hsa-miR-3184-3p, VEGF-A and TGF-β were confirmed to be significantly higher in the vitreous of PDR eyes than controls(P < 0.05). Furthermore, Pearson's correlation analysis showed significantly positive correlations between these elevated miRNAs and growth factors (P < 0.05). CONCLUSIONS Elevated vitreous levels of hsa-miR-24-3p, hsa-miR-197-3p, hsa-miR-3184-3p in PDR patients may play roles in pathophysiology of PDR, the target mRNAs of which significantly enriched in VEGF and TGF-β signaling pathways. Positive correlations between elevated vitreous levels of the three miRNAs and VEGF-A, TGF-β in PDR patients could provide a novel research direction for PDR.
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Affiliation(s)
- Ju Guo
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Pengyi Zhou
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Meng Pan
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Zhenhui Liu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Guangqi An
- People's Hospital of Zhengzhou University, Henan Eye Institute, Zhengzhou 450000, China
| | - Jinfeng Han
- People's Hospital of Zhengzhou University, Henan Eye Institute, Zhengzhou 450000, China
| | - Fangfang Dai
- People's Hospital of Zhengzhou University, Henan Eye Institute, Zhengzhou 450000, China
| | - Liping Du
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Xuemin Jin
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.
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Epigenetic Mechanisms in Type 2 Diabetes Retinopathy: A Systematic Review. Int J Mol Sci 2021; 22:ijms221910502. [PMID: 34638838 PMCID: PMC8509039 DOI: 10.3390/ijms221910502] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 01/01/2023] Open
Abstract
Diabetic retinopathy (DR) is one of the main causes of vision loss in middle-aged economically active people. Modifiable (i.e., hyperglycaemia, hypertension, hyperlipidaemia, obesity, and cigarette smoke) and non-modifiable factors (i.e., duration of diabetes, puberty, pregnancy and genetic susceptibility) are involved in the development of DR. Epigenetic mechanisms, modulating the oxidative stress, inflammation, apoptosis, and aging, could influence the course of DR. Herein, we conducted a systematic review of observational studies investigating how epigenetics affects type 2 diabetes retinopathy (T2DR). A total of 23 epidemiological studies were included: 14 studies focused on miRNA, 4 studies on lnc-RNA, one study on both miRNA and lnc-RNA, and 4 studies on global or gene-specific DNA methylation. A direct relation between the dysregulation of miR-21, miR-93, and miR-221 and FPG, HbA1c, and HOMA-IR was identified. A panel of three miRNAs (hsa-let-7a-5p, hsa-miR-novel-chr5_15976, and hsa-miR-28-3p) demonstrated a good sensitivity and specificity for predicting T2DR. Little evidence is available regarding the possible role of the long non-coding MALAT1 dysregulation and MTHFR gene promoter hypermethylation. Despite these initial, encouraging findings potentially suggesting a role of epigenetics in T2DR, the use in clinical practice for the diagnosis and staging of this complication encounters several difficulties and further targeted investigations are still necessary.
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Wang H, Su X, Zhang QQ, Zhang YY, Chu ZY, Zhang JL, Ren Q. MicroRNA-93-5p participates in type 2 diabetic retinopathy through targeting Sirt1. Int Ophthalmol 2021; 41:3837-3848. [PMID: 34313929 DOI: 10.1007/s10792-021-01953-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 07/09/2021] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To investigate the role of miR-93-5p in rats with type 2 diabetic retinopathy (DR) through targeting Sirt1. METHODS The targeting correlation between miR-93-5p and Sirt1 was validated by dual-luciferase reporter gene assay. Type 2 diabetes mellitus (T2DM) rat models were received intravitreal injection of antagomir NC (negative control), miR-93-5p antagomir, miR-93-5p agomir and/or recombinant Sirt1, followed by observation of pathological changes in retina via HE staining. Besides, retinal vascular permeability was determined by fluorescein isothiocyanate-bovine serum albumin (FITC-BSA), while the retinal vasculature was observed through retinal trypsin digestion. Expression of miR-93-5p and Sirt1 was measured by qRT-PCR and Western blotting, while the levels of VEGF, proinflammatory cytokines and anti-oxidative indicators were determined using corresponding kits. RESULTS MiR-93-5p could target Sirt1 as analyzed by the luciferase reporter gene assay. Rats in the T2DM group presented the up-regulation of miR-93-5p and down-regulation of Sirt1 in the retina, and miR-93-5p inhibition could up-regulate Sirt1 expression in the T2DM rats. Recombinant Sirt1 decreased retinal vascular permeability and acellular capillaries with improved pathological changes in retina from T2DM rats, which was abolished by miR-93-5p agomir. Moreover, miR-93-5p inhibition or Sirt1 overexpression decreased the levels of VEGF and proinflammatory cytokines while enhancing the activity of anti-oxidative indicators. However, indicators above had no significant differences between T2DM group and T2DM + agomir + Sirt1 group. CONCLUSION MiR-93-5p, via targeting Sirt1, could affect the vascular permeability and acellular capillaries and mitigate the inflammation and oxidative stress in the retinas, which may play a critical role in DR.
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Affiliation(s)
- Hui Wang
- Department of Ophthalmology, Shijiazhuang People's Hospital, No. 365, Jianhua South Street, Yuhua District, Shijiazhuang, 050030, Hebei Province, China
| | - Xian Su
- Department of Ophthalmology, Shijiazhuang People's Hospital, No. 365, Jianhua South Street, Yuhua District, Shijiazhuang, 050030, Hebei Province, China
| | - Qian-Qian Zhang
- Department of Ophthalmology, Shijiazhuang People's Hospital, No. 365, Jianhua South Street, Yuhua District, Shijiazhuang, 050030, Hebei Province, China
| | - Ying-Ying Zhang
- Department of Ophthalmology, Shijiazhuang People's Hospital, No. 365, Jianhua South Street, Yuhua District, Shijiazhuang, 050030, Hebei Province, China
| | - Zhan-Ya Chu
- Department of Ophthalmology, Shijiazhuang People's Hospital, No. 365, Jianhua South Street, Yuhua District, Shijiazhuang, 050030, Hebei Province, China
| | - Jin-Ling Zhang
- Department of Ophthalmology, Shijiazhuang People's Hospital, No. 365, Jianhua South Street, Yuhua District, Shijiazhuang, 050030, Hebei Province, China
| | - Qian Ren
- Department of Ophthalmology, Shijiazhuang People's Hospital, No. 365, Jianhua South Street, Yuhua District, Shijiazhuang, 050030, Hebei Province, China.
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13
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Abstract
MicroRNAs orchestrate the tight regulation of numerous cellular processes and the deregulation in their activities has been implicated in many diseases, including diabetes and cancer. There is an increasing amount of epidemiological evidence associating diabetes, particularly type 2 diabetes mellitus, to an elevated risk of various cancer types, including breast cancer. However, little is yet known about the underlying molecular mechanisms and even less about the role miRNAs play in driving the tumorigenic potential of the cell signaling underlying diabetes pathogenesis. This article reviews the role of miRNA in bridging the diabetes–breast cancer association by discussing specific miRNAs that are implicated in diabetes and breast cancer and highlighting the overlap between the disease-specific regulatory miRNA networks to identify a 20-miRNA signature that is common to both diseases. Potential therapeutic targeting of these molecular players may help to alleviate the socioeconomic burden on public health that is imposed by the type 2 diabetes mellitus (T2DM)–breast cancer association.
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14
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Recent Highlights of Research on miRNAs as Early Potential Biomarkers for Cardiovascular Complications of Type 2 Diabetes Mellitus. Int J Mol Sci 2021; 22:ijms22063153. [PMID: 33808800 PMCID: PMC8003798 DOI: 10.3390/ijms22063153] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/12/2021] [Accepted: 03/16/2021] [Indexed: 02/06/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) and its complications pose a serious threat to the life and health of patients around the world. The most dangerous complications of this disease are vascular complications. Microvascular complications of T2DM include retinopathy, nephropathy, and neuropathy. In turn, macrovascular complications include coronary artery disease, peripheral artery disease, and cerebrovascular disease. The currently used diagnostic methods do not ensure detection of the disease at an early stage, and they also do not predict the risk of developing specific complications. MicroRNAs (miRNAs) are small, endogenous, noncoding molecules that are involved in key processes, such as cell proliferation, differentiation, and apoptosis. Recent research has assigned them an important role as potential biomarkers for detecting complications related to diabetes. We suggest that utilizing miRNAs can be a routine approach for early diagnosis and prognosis of diseases and may enable the development of better therapeutic approaches. In this paper, we conduct a review of the latest reports demonstrating the usefulness of miRNAs as biomarkers in the vascular complications of T2DM.
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15
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Chen H, Feng Z, Li L, Fan L. MicroRNA-9 rescues hyperglycemia-induced endothelial cell dysfunction and promotes arteriogenesis through downregulating Notch1 signaling. Mol Cell Biochem 2021; 476:2777-2789. [PMID: 33721156 DOI: 10.1007/s11010-021-04075-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 01/17/2021] [Indexed: 12/11/2022]
Abstract
Hyperglycemia-induced endothelial dysfunction plays a major role in the pathogenesis of diabetic vascular complications. MicroRNAs are potential therapeutic agents to improve hyperglycemia-induced endothelial dysfunction. This study examined the relationship of miR-9 with Notch1 signaling in hyperglycemia-induced endothelial dysfunction. Human umbilical vein endothelial cells (HUVECs) were exposed to 30 mM glucose concentration. Cell viability including proliferation, adhesion, migration and tube formation was significantly impaired. Quantitative real time polymerase chain reaction (qRT-PCR) or Western blot demonstrated that miR-9 expression remarkably decreased and expression of Notch1 and its effectors (Hes1, Hey1, Hey2) were upregulated. Transfection with miR-9 improved cell function, inhibited mRNA and protein expression of Notch1 and its effectors. Although basal expression of the arterial endothelium biomarker Ephrin B2 was almost undetectable in HUVECs, double-label immunofluorescence revealed that transfection with miR-9 upregulated Ephrin B2 expression. By contrast, such protective effects of miR-9 overexpression were eliminated due to use of miR-9 inhibitor. Dual luciferase assay further confirmed a significant inverse correlation between miR-9 and Notch1. In addition, Notch1 overactiviation was mimicked in HUVECs by transfecting with Notch1 intracellular domain (NICD1). MiR-9 significantly inhibited NICD1 mRNA expression and alleviated hyperglycemia-induced injury of the NICD1-overexpressing cells. Taken together, our data support upregulating miR-9 expression as a potential therapeutic strategy to antagonize hyperglycemia-induced injury by inhibiting Notch1 signaling.
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Affiliation(s)
- Huang Chen
- Department of Cardiology, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China.,Institute of Coronary Heart Disease of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China
| | - Zhihai Feng
- Department of Cardiology, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China.,Institute of Coronary Heart Disease of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China
| | - Lieyou Li
- Department of Cardiology, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China.,Institute of Coronary Heart Disease of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China
| | - Lin Fan
- Department of Cardiology, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China. .,Institute of Coronary Heart Disease of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China. .,Department of Geriatrics, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China. .,Institute of Geriatrics of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China.
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16
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Wang H. MicroRNAs, Parkinson's Disease, and Diabetes Mellitus. Int J Mol Sci 2021; 22:ijms22062953. [PMID: 33799467 PMCID: PMC8001823 DOI: 10.3390/ijms22062953] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 02/07/2023] Open
Abstract
Parkinson’s disease (PD) is a neurodegenerative disorder that affects 1% of the population over the age of 60. Diabetes Mellitus (DM) is a metabolic disorder that affects approximately 25% of adults over the age of 60. Recent studies showed that DM increases the risk of developing PD. The link between DM and PD has been discussed in the literature in relation to different mechanisms including mitochondrial dysfunction, oxidative stress, and protein aggregation. In this paper, we review the common microRNA (miRNA) biomarkers of both diseases. miRNAs play an important role in cell differentiation, development, the regulation of the cell cycle, and apoptosis. They are also involved in the pathology of many diseases. miRNAs can mediate the insulin pathway and glucose absorption. miRNAs can also regulate PD-related genes. Therefore, exploring the common miRNA biomarkers of both PD and DM can shed a light on how these two diseases are correlated, and targeting miRNAs is a potential therapeutic opportunity for both diseases.
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Affiliation(s)
- Hsiuying Wang
- Institute of Statistics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
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17
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Gu Y, Rampin A, Alvino VV, Spinetti G, Madeddu P. Cell Therapy for Critical Limb Ischemia: Advantages, Limitations, and New Perspectives for Treatment of Patients with Critical Diabetic Vasculopathy. Curr Diab Rep 2021; 21:11. [PMID: 33651185 PMCID: PMC7925447 DOI: 10.1007/s11892-021-01378-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/13/2021] [Indexed: 12/18/2022]
Abstract
PURPOSE OF REVIEW To provide a highlight of the current state of cell therapy for the treatment of critical limb ischemia in patients with diabetes. RECENT FINDINGS The global incidence of diabetes is constantly growing with consequent challenges for healthcare systems worldwide. In the UK only, NHS costs attributed to diabetic complications, such as peripheral vascular disease, amputation, blindness, renal failure, and stroke, average £10 billion each year, with cost pressure being estimated to get worse. Although giant leaps forward have been registered in the scope of early diagnosis and optimal glycaemic control, an effective treatment for critical limb ischemia is still lacking. The present review aims to provide an update of the ongoing work in the field of regenerative medicine. Recent advancements but also limitations imposed by diabetes on the potential of the approach are addressed. In particular, the review focuses on the perturbation of non-coding RNA networks in progenitor cells and the possibility of using emerging knowledge on molecular mechanisms to design refined protocols for personalized therapy. The field of cell therapy showed rapid progress but has limitations. Significant advances are foreseen in the upcoming years thanks to a better understanding of molecular bottlenecks associated with the metabolic disorders.
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Affiliation(s)
- Y Gu
- Bristol Medical School, Translational Health Sciences, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - A Rampin
- Laboratory of Cardiovascular Research, IRCCS, MultiMedica, Milan, Italy
| | - V V Alvino
- Bristol Medical School, Translational Health Sciences, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - G Spinetti
- Laboratory of Cardiovascular Research, IRCCS, MultiMedica, Milan, Italy
| | - P Madeddu
- Bristol Medical School, Translational Health Sciences, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK.
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18
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Plasma microRNA signature associated with retinopathy in patients with type 2 diabetes. Sci Rep 2021; 11:4136. [PMID: 33602976 PMCID: PMC7892881 DOI: 10.1038/s41598-021-83047-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 01/24/2021] [Indexed: 12/17/2022] Open
Abstract
Diabetic retinopathy (DR) is a leading cause of vision loss and disability. Effective management of DR depends on prompt treatment and would benefit from biomarkers for screening and pre-symptomatic detection of retinopathy in diabetic patients. MicroRNAs (miRNAs) are post-transcriptional regulators of gene expression which are released in the bloodstream and may serve as biomarkers. Little is known on circulating miRNAs in patients with type 2 diabetes (T2DM) and DR. Here we show that DR is associated with higher circulating miR-25-3p (P = 0.004) and miR-320b (P = 0.011) and lower levels of miR-495-3p (P < 0.001) in a cohort of patients with T2DM with DR (n = 20), compared with diabetic subjects without DR (n = 10) and healthy individuals (n = 10). These associations persisted significant after adjustment for age, gender, and HbA1c. The circulating levels of these miRNAs correlated with severity of the disease and their concomitant evaluation showed high accuracy for identifying DR (AUROC = 0.93; P < 0.001). Gene ontology analysis of validated targets revealed enrichment in pathways such as regulation of metabolic process (P = 1.5 × 10–20), of cell response to stress (P = 1.9 × 10–14), and development of blood vessels (P = 2.7 × 10–14). Pending external validation, we anticipate that these miRNAs may serve as putative disease biomarkers and highlight novel molecular targets for improving care of patients with diabetic retinopathy.
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Martins B, Amorim M, Reis F, Ambrósio AF, Fernandes R. Extracellular Vesicles and MicroRNA: Putative Role in Diagnosis and Treatment of Diabetic Retinopathy. Antioxidants (Basel) 2020; 9:E705. [PMID: 32759750 PMCID: PMC7463887 DOI: 10.3390/antiox9080705] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/01/2020] [Accepted: 08/02/2020] [Indexed: 02/07/2023] Open
Abstract
Diabetic retinopathy (DR) is a complex, progressive, and heterogenous retinal degenerative disease associated with diabetes duration. It is characterized by glial, neural, and microvascular dysfunction, being the blood-retinal barrier (BRB) breakdown a hallmark of the early stages. In advanced stages, there is formation of new blood vessels, which are fragile and prone to leaking. This disease, if left untreated, may result in severe vision loss and eventually legal blindness. Although there are some available treatment options for DR, most of them are targeted to the advanced stages of the disease, have some adverse effects, and many patients do not adequately respond to the treatment, which demands further research. Oxidative stress and low-grade inflammation are closely associated processes that play a critical role in the development of DR. Retinal cells communicate with each other or with another one, using cell junctions, adhesion contacts, and secreted soluble factors that can act in neighboring or long-distance cells. Another mechanism of cell communication is via secreted extracellular vesicles (EVs), through exchange of material. Here, we review the current knowledge on deregulation of cell-to-cell communication through EVs, discussing the changes in miRNA expression profiling in body fluids and their role in the development of DR. Thereafter, current and promising therapeutic agents for preventing the progression of DR will be discussed.
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Affiliation(s)
- Beatriz Martins
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (B.M.); (M.A.); (F.R.); (A.F.A.)
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Madania Amorim
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (B.M.); (M.A.); (F.R.); (A.F.A.)
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Flávio Reis
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (B.M.); (M.A.); (F.R.); (A.F.A.)
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3000-548 Coimbra, Portugal
| | - António Francisco Ambrósio
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (B.M.); (M.A.); (F.R.); (A.F.A.)
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3000-548 Coimbra, Portugal
- Association for Innovation and Biomedical Research on Light and Image (AIBILI), 3000-548 Coimbra, Portugal
| | - Rosa Fernandes
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal; (B.M.); (M.A.); (F.R.); (A.F.A.)
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3000-548 Coimbra, Portugal
- Association for Innovation and Biomedical Research on Light and Image (AIBILI), 3000-548 Coimbra, Portugal
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Greco M, Chiefari E, Accattato F, Corigliano DM, Arcidiacono B, Mirabelli M, Liguori R, Brunetti FS, Pullano SA, Scorcia V, Fiorillo AS, Foti DP, Brunetti A. MicroRNA-1281 as a Novel Circulating Biomarker in Patients With Diabetic Retinopathy. Front Endocrinol (Lausanne) 2020; 11:528. [PMID: 32849308 PMCID: PMC7417427 DOI: 10.3389/fendo.2020.00528] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 06/29/2020] [Indexed: 01/10/2023] Open
Abstract
Objective: Recently, the role of circulating miRNAs as non-invasive biomarkers for the identification and monitoring of diabetes microvascular complications has emerged. Herein, we aimed to: identify circulating miRNAs differentially expressed in patients with and without diabetic retinopathy (DR); examine their predictive value; and understand their pathogenic impact. Methods: Pooled serum samples from randomly selected matched patients with type 2 diabetes, either with or without DR, were used for initial serum miRNA profiling. Validation of the most relevant miRNAs was thereafter conducted by RT-qPCR in an extended sample of patients with DR and matched controls. Results: Following miRNA profiling, 43 miRNAs were significantly up- or down-regulated in patients with DR compared with controls. After individual validation, 5 miRNAs were found significantly overexpressed in patients with DR. One of them, miR-1281, was the most up-regulated and appeared to be specifically related to DR. Furthermore, secreted levels of miR-1281 were increased in high glucose-cultured retinal cells, and there was evidence of a potential link between glucose-induced miR-1281 up-regulation and DR. Conclusion: Our findings suggest miR-1281 as a circulating biomarker of DR. Also, they highlight the pathogenic significance of miR-1281, providing insights for a new potential target in treating DR.
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Affiliation(s)
- Marta Greco
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Eusebio Chiefari
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Francesca Accattato
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | | | - Biagio Arcidiacono
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Maria Mirabelli
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Rossella Liguori
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Francesco S. Brunetti
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Salvatore A. Pullano
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Vincenzo Scorcia
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Antonino S. Fiorillo
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Daniela P. Foti
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
| | - Antonio Brunetti
- Department of Health Sciences, University of Catanzaro “Magna Græcia,”Catanzaro, Italy
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Banerjee J, Roy S, Dhas Y, Mishra N. Senescence-associated miR-34a and miR-126 in middle-aged Indians with type 2 diabetes. Clin Exp Med 2020; 20:149-158. [PMID: 31732824 DOI: 10.1007/s10238-019-00593-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 11/01/2019] [Indexed: 12/16/2022]
Abstract
Rapid urbanization and unhealthy dietary patterns critically increase the risk of type 2 diabetes (T2D) in middle-aged Indians. However, despite recent evidence of senescence-associated microRNAs (SA-miRNAs) in regulating complex pathways of ageing, their expressions in middle-aged Indians with T2D remain unexplored. Hence we aimed to investigate the changes in expressions of SA-miRNAs miR-34a and miR-126 in middle-aged T2D patients. A total of 30 T2D patients and 30 controls were recruited of age 31-50 years. The expressions of plasma miR-34a and miR-126 were determined by quantitative PCR. Oxidized LDL (OxLDL) and malondialdehyde (MDA) levels were quantified using enzyme-linked immunosorbent assay (ELISA). The effect of different glucose concentrations on miR-34a, miR-126, senescence-associated, and oxidative stress-responsive genes were also studied in an in vitro model of mice pancreatic β-cells. MiR-34a was significantly upregulated, whereas miR-126 was nonsignificantly reduced in T2D patients as compared to controls. T2D patients showed elevated levels of oxidative stress markers than controls. Analysis of cultured mice pancreatic β-cells exposed to high glucose showed significant upregulation of miR-34a, miR-126, p53, and superoxide dismutase 2 (SOD2). We found that circulating miR-34a levels and oxidative stress markers levels were elevated in the middle-aged Indians with T2D as compared to controls. The presence of diabetes may aggravate the normal ageing process in the middle-aged Indians. These SA-miRNAs can also be used to check the cellular dysfunctions and ageing of pancreatic β-cells.
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Affiliation(s)
- Joyita Banerjee
- Symbiosis School of Biological Sciences (Formerly Symbiosis School of Biomedical Sciences), Symbiosis International (Deemed University), Lavale, Pune, 412115, India
| | - Swagata Roy
- Symbiosis School of Biological Sciences (Formerly Symbiosis School of Biomedical Sciences), Symbiosis International (Deemed University), Lavale, Pune, 412115, India
| | - Yogita Dhas
- Symbiosis School of Biological Sciences (Formerly Symbiosis School of Biomedical Sciences), Symbiosis International (Deemed University), Lavale, Pune, 412115, India
| | - Neetu Mishra
- Symbiosis School of Biological Sciences (Formerly Symbiosis School of Biomedical Sciences), Symbiosis International (Deemed University), Lavale, Pune, 412115, India.
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