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Li Y, Deng S, Peng J, Wang X, Essandoh K, Mu X, Peng T, Meng ZX, Fan GC. MicroRNA-223 is essential for maintaining functional β-cell mass during diabetes through inhibiting both FOXO1 and SOX6 pathways. J Biol Chem 2019; 294:10438-10448. [PMID: 31118273 DOI: 10.1074/jbc.ra119.007755] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/16/2019] [Indexed: 01/26/2023] Open
Abstract
The initiation and development of diabetes are mainly ascribed to the loss of functional β-cells. Therapies designed to regenerate β-cells provide great potential for controlling glucose levels and thereby preventing the devastating complications associated with diabetes. This requires detailed knowledge of the molecular events and underlying mechanisms in this disorder. Here, we report that expression of microRNA-223 (miR-223) is up-regulated in islets from diabetic mice and humans, as well as in murine Min6 β-cells exposed to tumor necrosis factor α (TNFα) or high glucose. Interestingly, miR-223 knockout (KO) mice exhibit impaired glucose tolerance and insulin resistance. Further analysis reveals that miR-223 deficiency dramatically suppresses β-cell proliferation and insulin secretion. Mechanistically, using luciferase reporter gene assays, histological analysis, and immunoblotting, we demonstrate that miR-223 inhibits both forkhead box O1 (FOXO1) and SRY-box 6 (SOX6) signaling, a unique bipartite mechanism that modulates expression of several β-cell markers (pancreatic and duodenal homeobox 1 (PDX1), NK6 homeobox 1 (NKX6.1), and urocortin 3 (UCN3)) and cell cycle-related genes (cyclin D1, cyclin E1, and cyclin-dependent kinase inhibitor P27 (P27)). Importantly, miR-223 overexpression in β-cells could promote β-cell proliferation and improve β-cell function. Taken together, our results suggest that miR-223 is a critical factor for maintaining functional β-cell mass and adaptation during metabolic stress.
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Affiliation(s)
- Yutian Li
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Shan Deng
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267.,Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China 430074
| | - Jiangtong Peng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China 430074
| | - Xiaohong Wang
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Kobina Essandoh
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Xingjiang Mu
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267
| | - Tianqing Peng
- Critical Illness Research, Lawson Health Research Institute, Ontario, Canada N6C 2R5, and
| | - Zhuo-Xian Meng
- Department of Pathology and Pathophysiology, Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China 310058
| | - Guo-Chang Fan
- From the Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267,
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Motlagh RA, Mohebbi S, Moslemi M, Jabbari P, Alizadeh A, Mardani R, Gheibi Hayat SM. Pancreatic β-cell regeneration: From molecular mechanisms to therapy. J Cell Biochem 2019; 120:14189-14200. [PMID: 31081169 DOI: 10.1002/jcb.28834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/27/2019] [Accepted: 01/30/2019] [Indexed: 12/19/2022]
Abstract
Pancreatic β cells are a type of cells that are present in the islets of Langerhans. These cells are highly specialized for the secretion of insulin in response to low increasing of blood glucose levels. Hence, pancreatic β cells could contribute to maintaining systemic glucose homeostasis. Increasing evidence has revealed that a variety of internal (ie, genetic and epigenetic factors) and external factors (ie, radical-oxidative stress) are involved in the protection and/or regeneration of pancreatic β cells. The pathways regulating β-cell replication have been intensely investigated. Glucose has an important role in cell cycle entry of quiescent β cells, which exerts its effect via glucose metabolism and unfolded proteins. A variety of growth factors, hormones, and signaling pathways (ie, calcium-calcineurin nuclear factor of activated T cells) are others factors that could affect β-cell replication under different conditions. Therefore, a greater understanding of the underlying pathways involved in the regeneration and protection of pancreatic β cells could lead to finding and developing new therapeutic approaches. Utilization of stem cells and various phytochemical agents have provided new aspects for preventing β-cell degeneration and stimulating the endogenous regeneration of islets. Thus, these therapeutic platforms could be used as potential therapies in the treatment of insulin-dependent diabetes mellitus. Here, we summarized the various mechanisms involved in pancreatic β-cell regeneration. Moreover, we highlighted different therapeutic approaches which could be used for the regeneration of pancreatic β cells.
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Affiliation(s)
- Roozbeh Akbari Motlagh
- Department of Biochemistry and Molecular biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Shabnam Mohebbi
- Department of Chemical Engineering, Tabriz University, Tabriz, Iran
| | - Maryam Moslemi
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Parnia Jabbari
- Department of New Medical Science, Islamic Azad University Tehran Medical Branch, Tehran, Iran
| | - Arezoo Alizadeh
- Department of Biochemistry and Molecular biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Rajab Mardani
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | - Seyed Mohammad Gheibi Hayat
- Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Zhang T, Ji C, Shi R. miR-142-3p promotes pancreatic β cell survival through targeting FOXO1 in gestational diabetes mellitus. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2019; 12:1529-1538. [PMID: 31933970 PMCID: PMC6947098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 02/18/2019] [Indexed: 06/10/2023]
Abstract
Gestational diabetes mellitus (GDM) is a common metabolic disease during pregnancy with serious harm. However, the pathogenesis of GDM has not been thoroughly studied. Recent reports have shown that microRNAs (miRNAs) are associated with GDM, but the mechanisms remain unclear. This study aimed to investigate the role of miR-142-3p in β cells of GDM. We established GDM mouse models by injecting streptozotocin (STZ) to extract embryonic tissue, peripheral blood and pancreas. qRT-PCR was used to detect the expression of miR-142-3p and FOXO1. 5-ethynyl-2'-deoxyuridine (EDU) staining and flow cytometry were used to measure cell proliferation and apoptosis. Western blot analysis was used to determine the expression of proliferation and apoptosis-related proteins. Dual-luciferase reporter assay was used to assess the target relationship between miR-142-3p and FOXO1. The results showed that miR-142-3p was up-regulated in embryonic tissue and peripheral blood of GDM model mice. Overexpression of miR-142-3p and knockdown of FOXO1 both promoted INS-1 cell proliferation, inhibited apoptosis, increased proliferating cell nuclear antigen (PCNA) and Bcl-2 expression, as well as reduced the expression level of p27, Bax and cleaved caspase-3. There are binding sites between miR-142-3p and FOXO1, which is miR-142-3p directly regulated FOXO1 expression. Moreover, above increases and decreases induced by miR-142-3p were attenuated by FOXO1 overexpression. In conclusion, miR-142-3p promotes the survival of pancreatic β cells through targeting FOXO1 in GDM. This study suggests that targeted regulation of miR-142-3p/FOXO1 might be a new strategy for the treatment of GDM.
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Affiliation(s)
- Tian Zhang
- Department of Gynecology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University Changzhou, Jiangsu Province, China
| | - Chunhua Ji
- Department of Gynecology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University Changzhou, Jiangsu Province, China
| | - Ruxia Shi
- Department of Gynecology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University Changzhou, Jiangsu Province, China
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MicroRNA-181c Inhibits Interleukin-6-mediated Beta Cell Apoptosis by Targeting TNF-α Expression. Molecules 2019; 24:molecules24071410. [PMID: 30974824 PMCID: PMC6480349 DOI: 10.3390/molecules24071410] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 12/21/2022] Open
Abstract
We have previously reported that long-term treatment of beta cells with interleukin-6 (IL-6) is pro-apoptotic. However, little is known about the regulatory mechanisms that are involved. Therefore, we investigated pro-apoptotic changes in mRNA expression in beta cells in response to IL-6 treatment. We analyzed a microarray with RNA from INS-1 beta cells treated with IL-6, and found that TNF-α mRNA was significantly upregulated. Inhibition of TNF-α expression by neutralizing antibodies significantly decreased annexin V staining in cells compared with those treated with a control antibody. We identified three microRNAs that were differentially expressed in INS-1 cells incubated with IL-6. In particular, miR-181c was significantly downregulated in IL-6-treated cells compared with control cells and the decrease of miR-181c was attenuated by STAT-3 signaling inhibition. TNF-α mRNA was a direct target of miR-181c and upregulation of miR-181c by mimics, inhibited IL-6-induced increase in TNF-α mRNA expression. Consequently, reduction of TNF-α mRNA caused by miR-181c mimics enhanced cell viability in IL-6 treated INS-1 cells. These results demonstrated that miR-181c regulation of TNF-α expression plays a role in IL-6-induced beta cell apoptosis.
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microRNA-690 regulates induced pluripotent stem cells (iPSCs) differentiation into insulin-producing cells by targeting Sox9. Stem Cell Res Ther 2019; 10:59. [PMID: 30767782 PMCID: PMC6376733 DOI: 10.1186/s13287-019-1154-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 01/14/2019] [Accepted: 01/24/2019] [Indexed: 12/31/2022] Open
Abstract
Background The regulatory mechanism of insulin-producing cells (IPCs) differentiation from induced pluripotent stem cells (iPSCs) in vitro is very important in the phylogenetics of pancreatic islets, the molecular pathogenesis of diabetes, and the acquisition of high-quality pancreatic β-cells derived from stem cells for cell therapy. Methods miPSCs were induced for IPCs differentiation. miRNA microarray assays were performed by using total RNA from our iPCs-derived IPCs containing undifferentiated iPSCs and iPSCs-derived IPCSs at day 4, day 14, and day 21 during step 3 to screen the differentially expressed miRNAs (DEmiRNAs) related to IPCs differentiation, and putative target genes of DEmiRNAs were predicted by bioinformatics analysis. miR-690 was selected for further research, and MPCs were transfected by miR-690-agomir to confirm whether it was involved in the regulation of IPCs differentiation in iPSCs. Quantitative Real-Time PCR (qRT-PCR), Western blotting, and immunostaining assays were performed to examine the pancreatic function of IPCs at mRNA and protein level respectively. Flow cytometry and ELISA were performed to detect differentiation efficiency and insulin content and secretion from iPSCs-derived IPCs in response to stimulation at different concentration of glucose. The targeting of the 3′-untranslated region of Sox9 by miR-690 was examined by luciferase assay. Results We found that miR-690 was expressed dynamically during IPCs differentiation according to the miRNA array results and that overexpression of miR-690 significantly impaired the maturation and insulinogenesis of IPCs derived from iPSCs both in vitro and in vivo. Bioinformatic prediction and mechanistic analysis revealed that miR-690 plays a pivotal role during the differentiation of IPCs by directly targeting the transcription factor sex-determining region Y (SRY)-box9. Furthermore, downstream experiments indicated that miR-690 is likely to act as an inactivated regulator of the Wnt signaling pathway in this process. Conclusions We discovered a previously unknown interaction between miR-690 and sox9 but also revealed a new regulatory signaling pathway of the miR-690/Sox9 axis during iPSCs-induced IPCs differentiation. Electronic supplementary material The online version of this article (10.1186/s13287-019-1154-8) contains supplementary material, which is available to authorized users.
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Guay C, Kruit JK, Rome S, Menoud V, Mulder NL, Jurdzinski A, Mancarella F, Sebastiani G, Donda A, Gonzalez BJ, Jandus C, Bouzakri K, Pinget M, Boitard C, Romero P, Dotta F, Regazzi R. Lymphocyte-Derived Exosomal MicroRNAs Promote Pancreatic β Cell Death and May Contribute to Type 1 Diabetes Development. Cell Metab 2019; 29:348-361.e6. [PMID: 30318337 DOI: 10.1016/j.cmet.2018.09.011] [Citation(s) in RCA: 171] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 07/20/2018] [Accepted: 09/12/2018] [Indexed: 12/13/2022]
Abstract
Type 1 diabetes is an autoimmune disease initiated by the invasion of pancreatic islets by immune cells that selectively kill the β cells. We found that rodent and human T lymphocytes release exosomes containing the microRNAs (miRNAs) miR-142-3p, miR-142-5p, and miR-155, which can be transferred in active form to β cells favoring apoptosis. Inactivation of these miRNAs in recipient β cells prevents exosome-mediated apoptosis and protects non-obese diabetic (NOD) mice from diabetes development. Islets from protected NOD mice display higher insulin levels, lower insulitis scores, and reduced inflammation. Looking at the mechanisms underlying exosome action, we found that T lymphocyte exosomes trigger apoptosis and the expression of genes involved in chemokine signaling, including Ccl2, Ccl7, and Cxcl10, exclusively in β cells. The induction of these genes may promote the recruitment of immune cells and exacerbate β cell death during the autoimmune attack. Our data point to exosomal-miRNA transfer as a communication mode between immune and insulin-secreting cells.
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Affiliation(s)
- Claudiane Guay
- Department of Fundamental Neurosciences, University of Lausanne, Rue du Bugnon 9, 1005 Lausanne, Switzerland
| | - Janine K Kruit
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Sophie Rome
- CarMeN Laboratory (INSERM 1060, INRA 1362, INSA), University of Lyon, Faculté de Médecine de Lyon Sud, Lyon, France
| | - Véronique Menoud
- Department of Fundamental Neurosciences, University of Lausanne, Rue du Bugnon 9, 1005 Lausanne, Switzerland
| | - Niels L Mulder
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Angelika Jurdzinski
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Francesca Mancarella
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy; Umberto Di Mario ONLUS Foundation - Toscana Life Science Park, Siena, Italy
| | - Guido Sebastiani
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy; Umberto Di Mario ONLUS Foundation - Toscana Life Science Park, Siena, Italy
| | - Alena Donda
- Ludwig Center for Cancer Research, University of Lausanne, Lausanne, Switzerland
| | - Bryan J Gonzalez
- Department of Fundamental Neurosciences, University of Lausanne, Rue du Bugnon 9, 1005 Lausanne, Switzerland
| | - Camilla Jandus
- Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland
| | - Karim Bouzakri
- UMR DIATHEC, EA 7294, Centre Européen d'Etude du Diabète, Université de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Michel Pinget
- UMR DIATHEC, EA 7294, Centre Européen d'Etude du Diabète, Université de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Christian Boitard
- Institut National de Santé et de Recherche Médicale U1016, Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Pedro Romero
- Ludwig Center for Cancer Research, University of Lausanne, Lausanne, Switzerland
| | - Francesco Dotta
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy; Umberto Di Mario ONLUS Foundation - Toscana Life Science Park, Siena, Italy
| | - Romano Regazzi
- Department of Fundamental Neurosciences, University of Lausanne, Rue du Bugnon 9, 1005 Lausanne, Switzerland.
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Li L, Wang S, Li H, Wan J, Zhou Q, Zhou Y, Zhang C. microRNA-96 protects pancreatic β-cell function by targeting PAK1 in gestational diabetes mellitus. Biofactors 2018; 44:539-547. [PMID: 30536654 DOI: 10.1002/biof.1461] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 08/07/2018] [Accepted: 08/08/2018] [Indexed: 12/11/2022]
Abstract
Gestational diabetes mellitus (GDM) is a disease condition in which a woman develops high blood sugar levels during pregnancy, which might be induced by multiple factors. Among those relative factors, microRNA (miRNA) is well-known to be involved in GDM development. In this study, we investigated the role of miRNA in GDM by analyzing miRNA expression profiling in placenta tissues from healthy or GDM pregnancies. We found that miR-96 was the most down-regulated miRNA in GDM samples. Furthermore, miRNA target gene prediction revealed that p21-activated kinase 1 (PAK1) is a potential target of miR-96. Functional assays showed that miR-96 enhanced β-cell function, whereas PAK1 inhibited β-cell function and cell viability. Our findings demonstrate that miR-96 plays a critical role in GDM development by regulating PAK1 expression, insulin secretion, and β-cell function. © 2018 BioFactors, 44(6):539-547, 2018.
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Affiliation(s)
- Lei Li
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Shan Wang
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Hongyan Li
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Jipeng Wan
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Qian Zhou
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Yu Zhou
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
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Huang Q, You W, Li Y, Sun Y, Zhou Y, Zhang Y, Liu D, Zhan S, Zhu Y, Han X. Glucolipotoxicity-Inhibited miR-299-5p Regulates Pancreatic β-Cell Function and Survival. Diabetes 2018; 67:2280-2292. [PMID: 30131392 DOI: 10.2337/db18-0223] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 08/07/2018] [Indexed: 11/13/2022]
Abstract
Inhibition of microRNAs (miRNAs) essential for pancreatic β-cell biology (e.g., miR-375) results in β-cell failure and diabetes in rodent models. Whether the downregulation of miRNAs in pancreatic islets is involved in the development of human type 2 diabetes remains unclear. Here, with the use of an miRNA microarray, we identified a set of miRNAs that were differentially expressed in healthy human islets under glucolipotoxic conditions. A downregulated miRNA, miR-299-5p, was preferentially studied because its inhibition causes dramatic β-cell dysfunction and apoptosis. Proteomic profiling and bioinformatics methods identified four target genes, including a Trp53 effector, Perp, that were further confirmed by luciferase reporter assays. We narrowed down the effector of miR-299-5p downregulation to PERP owing to its upregulation in islets from diabetic rodents. Indeed, Perp inhibition prevented the β-cell impairment caused by either miR-299-5p reduction or glucolipotoxicity. Additional investigations confirmed the modulatory effect of PERP on insulin secretion. Collectively, miR-299-5p appears to be an essential regulator of β-cell biology, and its downregulation links PERP enhancement to β-cell dysfunction and apoptosis in glucolipotoxic settings. Our work demonstrates a novel mechanism of glucolipotoxicity-induced β-cell failure mediated through miR-299-5p downregulation.
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Affiliation(s)
- Qiqing Huang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
- Key Laboratory of Geriatrics of Jiangsu Province, Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Weiyan You
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
- Key Laboratory for Neurodegenerative Disease of Jiangsu Province, Department of Neurobiology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yating Li
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yi Sun
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuncai Zhou
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yan Zhang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dechen Liu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Shanshan Zhan
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of General Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Yunxia Zhu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiao Han
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
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Inhibition of Lincpint expression affects insulin secretion and apoptosis in mouse pancreatic β cells. Int J Biochem Cell Biol 2018; 104:171-179. [DOI: 10.1016/j.biocel.2018.09.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 09/02/2018] [Accepted: 09/06/2018] [Indexed: 12/27/2022]
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Mohan R, Baumann D, Alejandro EU. Fetal undernutrition, placental insufficiency, and pancreatic β-cell development programming in utero. Am J Physiol Regul Integr Comp Physiol 2018; 315:R867-R878. [PMID: 30110175 DOI: 10.1152/ajpregu.00072.2018] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The prevalence of obesity and type 2 (T2D) diabetes is a major health concern in the United States and around the world. T2D is a complex disease characterized by pancreatic β-cell failure in association with obesity and insulin resistance in peripheral tissues. Although several genes associated with T2D have been identified, it is speculated that genetic variants account for only <10% of the risk for this disease. A strong body of data from both human epidemiological and animal studies shows that fetal nutrient factors in utero confer significant susceptibility to T2D. Numerous studies done in animals have shown that suboptimal maternal environment or placental insufficiency causes intrauterine growth restriction (IUGR) in the fetus, a critical factor known to predispose offspring to obesity and T2D, in part by causing permanent consequences in total functional β-cell mass. This review will focus on the potential contribution of the placenta in fetal programming of obesity and TD and its likely impact on pancreatic β-cell development and growth.
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Affiliation(s)
- Ramkumar Mohan
- Department of Integrative Biology and Physiology, University of Minnesota , Minneapolis, Minnesota
| | - Daniel Baumann
- Department of Integrative Biology and Physiology, University of Minnesota , Minneapolis, Minnesota
| | - Emilyn Uy Alejandro
- Department of Integrative Biology and Physiology, University of Minnesota , Minneapolis, Minnesota
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Dotta F, Ventriglia G, Snowhite IV, Pugliese A. MicroRNAs: markers of β-cell stress and autoimmunity. Curr Opin Endocrinol Diabetes Obes 2018; 25:237-245. [PMID: 29846238 DOI: 10.1097/med.0000000000000420] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW We discuss current knowledge about microRNAs (miRNAs) in type 1 diabetes (T1D), an autoimmune disease leading to severe loss of pancreatic β-cells. We describe: the role of cellular miRNAs in regulating immune functions and pathways impacting insulin secretion and β-cell survival; circulating miRNAs as disease biomarkers. RECENT FINDINGS Studies examined miRNAs in experimental models and patients, including analysis of tissues from organ donors, peripheral blood cells, and circulating miRNAs in serum, plasma, and exosomes. Studies employed diverse designs and methodologies to detect miRNAs and measure their levels. Selected miRNAs have been linked to the regulation of key biological pathways and disease pathogenesis; several circulating miRNAs are associated with having T1D, islet autoimmunity, disease progression, and immune and metabolic functions, for example, C-peptide secretion, in multiple studies. SUMMARY A growing literature reveals multiple roles of miRNAs in T1D, provide new clues into the regulation of disease mechanisms, and identify reproducible associations. Yet challenges remain, and the field will benefit from joint efforts to analyze results, compare methodologies, formally test the robustness of miRNA associations, and ultimately move towards validating robust miRNA biomarkers.
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Affiliation(s)
- Francesco Dotta
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena
- Fondazione Umberto di Mario, Toscana Life Sciences, Siena, Italy
| | - Giuliana Ventriglia
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena
- Fondazione Umberto di Mario, Toscana Life Sciences, Siena, Italy
| | | | - Alberto Pugliese
- Diabetes Research Institute
- Department of Medicine, Division of Endocrinology and Metabolism
- Department of Microbiology and Immunology, Leonard Miller School of Medicine, University of Miami, Miami, Florida, USA
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Li B, Fan J, Chen N. A Novel Regulator of Type II Diabetes: MicroRNA-143. Trends Endocrinol Metab 2018; 29:380-388. [PMID: 29680463 DOI: 10.1016/j.tem.2018.03.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/26/2018] [Accepted: 03/29/2018] [Indexed: 12/16/2022]
Abstract
MiR-143 is an miRNA with the function of specifically inhibiting the insulin-AKT pathway via the downregulation of oxysterol-binding protein-related protein 8 (ORP8), thus resulting in the inhibition of AKT phosphorylation, insulin tolerance, and final development of type II diabetes mellitus (T2DM). Aerobic exercise can prevent T2DM by downregulating miR-143. However, the underlying mechanisms for exercise-induced change of miR-143 remain unclear. In the present study, we will summarize the involvement of miR-143 in regulating the development of T2DM and the underlying mechanisms for potential diagnosis, prevention, and treatments, including exercise intervention for T2DM by targeting miR-143.
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Affiliation(s)
- Biao Li
- Graduate School, Wuhan Sports University, Wuhan 430079, China; These authors contributed equally to this work
| | - Jingjing Fan
- Tianjiu Research and Development Center for Exercise Nutrition and Foods, Hubei Key Laboratory of Sport Training and Monitoring, College of Health Science, Wuhan Sports University, Wuhan 430079, China; These authors contributed equally to this work
| | - Ning Chen
- Tianjiu Research and Development Center for Exercise Nutrition and Foods, Hubei Key Laboratory of Sport Training and Monitoring, College of Health Science, Wuhan Sports University, Wuhan 430079, China.
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Expansion of transplanted islets in mice by co-transplantation with adipose tissue-derived mesenchymal stem cells. Heliyon 2018; 4:e00632. [PMID: 29872765 PMCID: PMC5986537 DOI: 10.1016/j.heliyon.2018.e00632] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/14/2018] [Accepted: 05/15/2018] [Indexed: 01/09/2023] Open
Abstract
The shortage of donor islets is a significant obstacle for widespread clinical application of pancreatic islet transplantation. To investigate whether adipose tissue-derived mesenchymal stem cells (ADSCs) induce expansion of transplanted islets, we performed co-transplantation experiments in a mouse model. Streptozotosin (STZ)-induced diabetic mice transplanted with 50 syngeneic islets remained hyperglycemic. However, hyperglycemia was ameliorated gradually when 50 islets were co-transplanted with ADSCs but not separately grafted into the contralateral kidney. Insulin and proinsulin contents of 120-day grafts containing 50 islets co-transplanted with ADSCs were significantly increased compared with those of 50 isolated islets. The Ki67-positive ratios in islets of the naïve pancreas, at 30 and 120 days grafts were 0.23%, 2.12%, and 1.52%, respectively. Ki67-positive cells were predominantly Pdx1+ and insulin+ cells. These results demonstrate that co-transplantation with ADSCs induces proliferation of transplanted islets in mice, suggesting a potential solution for the low efficiency of islet transplantation.
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Abstract
Loss of miR-200c is correlated to advanced cancer-subtypes due to increased EMT and decreased treatment efficacy by chemotherapeutics. As miRNAs regulate a multitude of targets, the analysis of differentially expressed proteins upon a genomic knock-out (KO) is of interest. In this study, we generated a TALENs KO of miR-200c in MCF7 breast cancer cells, excluded its compensation by family-members and evaluated the impact on the proteome by analyzing three individual KO-clones. We identified 26 key proteins and a variety of enrichments in metabolic and cytoskeletal pathways. In six of these targets (AGR2, FLNA/B, ALDH7A1, SCIN, GSTM3) the differential expression was additionally detected at mRNA level. Together, these alterations in protein abundance accounted for the observed biological phenotypes, i.e. increased migration and chemoresistance and altered metabolism, found in the miR-200c-KO clones. These findings provide novel insights into miR-200c and pave the way for further studies.
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The interplay between noncoding RNAs and insulin in diabetes. Cancer Lett 2018; 419:53-63. [DOI: 10.1016/j.canlet.2018.01.038] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/05/2018] [Accepted: 01/10/2018] [Indexed: 12/11/2022]
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Thanikachalam PV, Ramamurthy S, Wong ZW, Koo BJ, Wong JY, Abdullah MF, Chin YH, Chia CH, Tan JY, Neo WT, Tan BS, Khan WF, Kesharwani P. Current attempts to implement microRNA-based diagnostics and therapy in cardiovascular and metabolic disease: a promising future. Drug Discov Today 2018; 23:460-480. [DOI: 10.1016/j.drudis.2017.10.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 10/09/2017] [Accepted: 10/23/2017] [Indexed: 12/12/2022]
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Safdar A, Tarnopolsky MA. Exosomes as Mediators of the Systemic Adaptations to Endurance Exercise. Cold Spring Harb Perspect Med 2018; 8:a029827. [PMID: 28490541 PMCID: PMC5830902 DOI: 10.1101/cshperspect.a029827] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Habitual endurance exercise training is associated with multisystemic metabolic adaptations that lower the risk of inactivity-associated disorders such as obesity and type 2 diabetes mellitus (T2DM). Identification of complex systemic signaling networks responsible for these benefits are of great interest because of their therapeutic potential in metabolic diseases; however, specific signals that modulate the multisystemic benefits of exercise in multiple tissues and organs are only recently being discovered. Accumulated evidence suggests that muscle and other tissues have an endocrine function and release peptides and nucleic acids into the circulation in response to acute endurance exercise to mediate the multisystemic adaptations. Factors released from skeletal muscle have been termed myokines and we propose that the total of all factors released in response to endurance exercise (including peptides, nucleic acids, and metabolites) be termed, "exerkines." We propose that many of the exerkines are released within extracellular vesicles called exosomes, which regulate peripheral organ cross talk. Exosomes (30-140 nm) and larger microvesicles [MVs] (100-1000 nm) are subcategories of extracellular vesicles that are released into the circulation. Exosomes contain peptides and several nucleic acids (microRNA [miRNA], messenger RNA [mRNA], mitochondrial DNA [mtDNA]) and are involved in intercellular/tissue exchange of their contents. An acute bout of endurance exercise increases circulating exosomes that are hypothesized to mediate organ cross talk to promote systemic adaptation to endurance exercise. Further support for the role of exosomes (and possibly MVs) in mediating the systemic benefits of exercise comes from the fact that the majority of the previously reported myokines/exerkines are found in extracellular vesicles databases (Vesiclepedia and ExoCarta). We propose that exosomes isolated from athletes following exercise or exosomes bioengineered to incorporate one or many of known exerkines will be therapeutically useful in the treatment of obesity, T2DM, and other aging-associated metabolic disorders.
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Affiliation(s)
- Adeel Safdar
- Department of Pediatrics, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
| | - Mark A Tarnopolsky
- Department of Pediatrics, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
- Department of Pediatrics & Medicine, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
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Jo S, Chen J, Xu G, Grayson TB, Thielen LA, Shalev A. miR-204 Controls Glucagon-Like Peptide 1 Receptor Expression and Agonist Function. Diabetes 2018; 67:256-264. [PMID: 29101219 PMCID: PMC5780066 DOI: 10.2337/db17-0506] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 10/30/2017] [Indexed: 12/18/2022]
Abstract
Glucagon-like peptide 1 receptor (GLP1R) agonists are widely used to treat diabetes. However, their function is dependent on adequate GLP1R expression, which is downregulated in diabetes. GLP1R is highly expressed on pancreatic β-cells, and activation by endogenous incretin or GLP1R agonists increases cAMP generation, which stimulates glucose-induced β-cell insulin secretion and helps maintain glucose homeostasis. We now have discovered that the highly β-cell-enriched microRNA, miR-204, directly targets the 3' UTR of GLP1R and thereby downregulates its expression in the β-cell-derived rat INS-1 cell line and primary mouse and human islets. Furthermore, in vivo deletion of miR-204 promoted islet GLP1R expression and enhanced responsiveness to GLP1R agonists, resulting in improved glucose tolerance, cAMP production, and insulin secretion as well as protection against diabetes. Since we recently identified thioredoxin-interacting protein (TXNIP) as an upstream regulator of miR-204, we also assessed whether in vivo deletion of TXNIP could mimic that of miR-204. Indeed, it also enhanced islet GLP1R expression and GLP1R agonist-induced insulin secretion and glucose tolerance. Thus, the present studies show for the first time that GLP1R is under the control of a microRNA, miR-204, and uncover a previously unappreciated link between TXNIP and incretin action.
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Affiliation(s)
- SeongHo Jo
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Alabama at Birmingham, Birmingham, AL
| | - Junqin Chen
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Alabama at Birmingham, Birmingham, AL
| | - Guanlan Xu
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Alabama at Birmingham, Birmingham, AL
| | - Truman B Grayson
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Alabama at Birmingham, Birmingham, AL
| | - Lance A Thielen
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Alabama at Birmingham, Birmingham, AL
| | - Anath Shalev
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Alabama at Birmingham, Birmingham, AL
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Song Y, Jin D, Jiang X, Lv C, Zhu H. Overexpression of microRNA-26a protects against deficient β-cell function via targeting phosphatase with tensin homology in mouse models of type 2 diabetes. Biochem Biophys Res Commun 2018; 495:1312-1316. [DOI: 10.1016/j.bbrc.2017.11.170] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 11/26/2017] [Indexed: 10/18/2022]
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Rorsman P, Ashcroft FM. Pancreatic β-Cell Electrical Activity and Insulin Secretion: Of Mice and Men. Physiol Rev 2018; 98:117-214. [PMID: 29212789 PMCID: PMC5866358 DOI: 10.1152/physrev.00008.2017] [Citation(s) in RCA: 445] [Impact Index Per Article: 74.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/30/2017] [Accepted: 06/18/2017] [Indexed: 12/14/2022] Open
Abstract
The pancreatic β-cell plays a key role in glucose homeostasis by secreting insulin, the only hormone capable of lowering the blood glucose concentration. Impaired insulin secretion results in the chronic hyperglycemia that characterizes type 2 diabetes (T2DM), which currently afflicts >450 million people worldwide. The healthy β-cell acts as a glucose sensor matching its output to the circulating glucose concentration. It does so via metabolically induced changes in electrical activity, which culminate in an increase in the cytoplasmic Ca2+ concentration and initiation of Ca2+-dependent exocytosis of insulin-containing secretory granules. Here, we review recent advances in our understanding of the β-cell transcriptome, electrical activity, and insulin exocytosis. We highlight salient differences between mouse and human β-cells, provide models of how the different ion channels contribute to their electrical activity and insulin secretion, and conclude by discussing how these processes become perturbed in T2DM.
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Affiliation(s)
- Patrik Rorsman
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Churchill Hospital, Oxford, United Kingdom; Department of Neuroscience and Physiology, Metabolic Research Unit, Göteborg, Sweden; and Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Frances M Ashcroft
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Churchill Hospital, Oxford, United Kingdom; Department of Neuroscience and Physiology, Metabolic Research Unit, Göteborg, Sweden; and Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
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71
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Kamalden TA, Macgregor-Das AM, Kannan SM, Dunkerly-Eyring B, Khaliddin N, Xu Z, Fusco AP, Yazib SA, Chow RC, Duh EJ, Halushka MK, Steenbergen C, Das S. Exosomal MicroRNA-15a Transfer from the Pancreas Augments Diabetic Complications by Inducing Oxidative Stress. Antioxid Redox Signal 2017; 27:913-930. [PMID: 28173719 PMCID: PMC5649125 DOI: 10.1089/ars.2016.6844] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
AIMS MicroRNAs (miRNAs), one type of noncoding RNA, modulate post-transcriptional gene expression in various pathogenic pathways in type 2 diabetes (T2D). Currently, little is known about how miRNAs influence disease pathogenesis by targeting cells at a distance. The purpose of this study was to investigate the role of exosomal miRNAs during T2D. RESULTS We show that miR-15a is increased in the plasma of diabetic patients, correlating with disease severity. miR-15 plays an important role in insulin production in pancreatic β-cells. By culturing rat pancreatic β-cells (INS-1) cells in high-glucose media, we identified a source of increased miR-15a in the blood as exosomes secreted by pancreatic β-cells. We postulate that miR-15a, produced in pancreatic β-cells, can enter the bloodstream and contribute to retinal injury. miR-15a overexpression in Müller cells can be induced by exposing Müller cells to exosomes derived from INS-1 cells under high-glucose conditions and results in oxidative stress by targeting Akt3, which leads to apoptotic cell death. The in vivo relevance of these findings is supported by results from high-fat diet and pancreatic β-cell-specific miR-15a-/- mice. INNOVATION This study highlights an important and underappreciated mechanism of remote cell-cell communication (exosomal transfer of miRNA) and its influence on the development of T2D complications. CONCLUSION Our findings suggest that circulating miR-15a contributes to the pathogenesis of diabetes and supports the concept that miRNAs released by one cell type can travel through the circulation and play a role in disease progression via their transfer to different cell types, inducing oxidative stress and cell injury. Antioxid. Redox Signal. 27, 913-930.
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Affiliation(s)
- Tengku Ain Kamalden
- 1 University of Malaya Eye Research Centre, Department of Ophthalmology, University of Malaya , Kuala Lumpur, Malaysia
| | | | - Sangeetha Marimuthu Kannan
- 2 Department of Pathology, Johns Hopkins University , Baltimore, Maryland.,3 School of Life Sciences, B.S. Abdur Rahman University , Chennai, India
| | | | - Nurliza Khaliddin
- 1 University of Malaya Eye Research Centre, Department of Ophthalmology, University of Malaya , Kuala Lumpur, Malaysia
| | - Zhenhua Xu
- 4 Department of Ophthalmology, Johns Hopkins University , Baltimore, Maryland
| | | | - Syatirah Abu Yazib
- 1 University of Malaya Eye Research Centre, Department of Ophthalmology, University of Malaya , Kuala Lumpur, Malaysia
| | - Rhuen Chiou Chow
- 1 University of Malaya Eye Research Centre, Department of Ophthalmology, University of Malaya , Kuala Lumpur, Malaysia
| | - Elia J Duh
- 4 Department of Ophthalmology, Johns Hopkins University , Baltimore, Maryland
| | - Marc K Halushka
- 2 Department of Pathology, Johns Hopkins University , Baltimore, Maryland
| | | | - Samarjit Das
- 2 Department of Pathology, Johns Hopkins University , Baltimore, Maryland
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Engelmann I, Alidjinou EK, Bertin A, Bossu J, Villenet C, Figeac M, Sane F, Hober D. Persistent coxsackievirus B4 infection induces microRNA dysregulation in human pancreatic cells. Cell Mol Life Sci 2017; 74:3851-3861. [PMID: 28601984 PMCID: PMC11107484 DOI: 10.1007/s00018-017-2567-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/16/2017] [Accepted: 06/06/2017] [Indexed: 12/15/2022]
Abstract
Enterovirus infections are implicated in the development of type 1 diabetes (T1D). MicroRNAs as regulators of gene expression are involved in many physiological and pathological processes. Given that viral infections dysregulate cellular microRNAs, we investigated the impact of persistent coxsackievirus B4 infection on microRNA expression of human pancreatic cells. Next-generation sequencing was used to determine microRNA expression in PANC-1 cells persistently infected (for several weeks) with coxsackievirus B4 and uninfected control cells. Target prediction restricted to T1D risk genes was performed with miRWalk2.0. Functional annotation analysis was performed with DAVID6.7. Expression of selected microRNAs and T1D risk genes was measured by quantitative reverse-transcription polymerase chain reaction. Eighty-one microRNAs were dysregulated in persistently infected PANC-1 cells. Forty-nine of the known fifty-five T1D risk genes were predicted as putative targets of at least one of the dysregulated microRNAs. Most functional annotation terms that were enriched in these 49 putative target genes were related to the immune response or autoimmunity. mRNA levels of AFF3, BACH2, and IL7R differed significantly between persistently infected cells and uninfected cells. This is the first characterization of the microRNA expression profile changes induced by persistent coxsackievirus B4 infection in pancreatic cells. The predicted targeting of genes involved in the immune response and autoimmunity by the dysregulated microRNAs as well as the dysregulated expression of diabetes risk genes shows that persistent coxsackievirus B4 infection profoundly impacts the host cell. These data support the hypothesis of a possible link between persistent coxsackievirus B4 infection and the development of T1D.
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Affiliation(s)
- Ilka Engelmann
- Univ Lille Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, F-59000, France
| | - Enagnon K Alidjinou
- Univ Lille Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, F-59000, France
| | - Antoine Bertin
- Univ Lille Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, F-59000, France
| | - Johann Bossu
- Univ Lille Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, F-59000, France
| | - Céline Villenet
- CHU Lille, Plate-forme de Génomique Fonctionnelle et Structurale, Lille, F-59000, France
| | - Martin Figeac
- CHU Lille, Plate-forme de Génomique Fonctionnelle et Structurale, Lille, F-59000, France
| | - Famara Sane
- Univ Lille Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, F-59000, France
| | - Didier Hober
- Univ Lille Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, F-59000, France.
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Liyanage KIP, Ganegoda GU. Therapeutic Approaches and Role of ncRNAs in Cardiovascular Disorders and Insulin Resistance. BIOMED RESEARCH INTERNATIONAL 2017; 2017:4078346. [PMID: 29057258 PMCID: PMC5625813 DOI: 10.1155/2017/4078346] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 07/25/2017] [Accepted: 08/02/2017] [Indexed: 12/21/2022]
Abstract
Diseases resulting from alterations in gene expressions through mutations in the genes or through changes in the gene expression regulation could be identified through the analysis of RNA expressions. ncRNAs play a significant role in regulation of the gene expression by controlling the expression levels of the coding RNAs and other cellular processes. Discoveries have shown that the human genome is encoded with sequences responsible for the transcription of thousands of ncRNAs. Even though the studies conducted on ncRNAs are still at initial stages, facts established so far display biomarkers that confirm their relationship with certain diseases such as cancers, cardiovascular diseases, and insulin resistance. These studies have been facilitated with high throughput modern sequencing techniques such as microarrays and RNA sequencing. The data obtained through the above analysis are processed with the aid of existing databases, to deduce conclusions on different diagnostic biomarkers and therapeutic targets for specific diseases. This review focuses on the association of ncRNAs in disease prediction, focusing mainly on cardiovascular diseases and disorders caused by insulin resistance. The report also analyzes regulatory functions of ncRNAs and novel approaches used in disease therapeutics.
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Wei J, Ding D, Wang T, Liu Q, Lin Y. MiR-338 controls BPA-triggered pancreatic islet insulin secretory dysfunction from compensation to decompensation by targeting Pdx-1. FASEB J 2017; 31:5184-5195. [PMID: 28774890 DOI: 10.1096/fj.201700282r] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 07/25/2017] [Indexed: 01/06/2023]
Abstract
Bisphenol A (BPA) can disrupt glucose homeostasis and impair pancreatic islet function; however, the mechanisms behind these effects are poorly understood. Male mice (4 wk old) were treated with BPA (50 or 500 μg/kg/d) for 8 wk. Whole-body glucose homeostasis, pancreatic islet morphology and function, and miR-338-mediated molecular signal transduction analyses were examined. We showed that BPA treatment led to a disruption of glucose tolerance and a compensatory increase of pancreatic islets insulin secretion and pancreatic and duodenal homeobox 1 (Pdx1) expression in mice. Inhibition of Pdx1 reduced glucose-stimulated insulin secretion and ATP production in the islets of BPA-exposed mice. Based on primary pancreatic islets, we also confirmed that miR-338 regulated Pdx1 and thus contributed to BPA-induced insulin secretory dysfunction from compensation to decompensation. Short-term BPA exposure downregulated miR-338 through activation of G-protein-coupled estrogen receptor 1 (Gpr30), whereas long-term BPA exposure upregulated miR-338 through suppression of glucagon-like peptide 1 receptor (Glp1r). Taken together, our results reveal a molecular mechanism, whereby BPA regulates Gpr30/Glp1r to mediate the expression of miR-338, which acts to control Pdx1-dependent insulin secretion. The Gpr30/Glp1r-miR-338-Pdx1 axis should be represented as a novel mechanism by which BPA induces insulin secretory dysfunction in pancreatic islets.-Wei, J., Ding, D., Wang, T., Liu, Q., Lin, Y. MiR-338 controls BPA-triggered pancreatic islet insulin secretory dysfunction from compensation to decompensation by targeting Pdx-1.
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Affiliation(s)
- Jie Wei
- Department of Basic Medical Sciences, Medical College, Xiamen University, Xiamen, China;
| | - Dongxiao Ding
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
| | - Tao Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, China; and.,Department of Biomedical Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Qiong Liu
- Department of Basic Medical Sciences, Medical College, Xiamen University, Xiamen, China
| | - Yi Lin
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China;
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Wan S, Wang J, Wang J, Wu J, Song J, Zhang CY, Zhang C, Wang C, Wang JJ. Increased serum miR-7 is a promising biomarker for type 2 diabetes mellitus and its microvascular complications. Diabetes Res Clin Pract 2017. [PMID: 28646700 DOI: 10.1016/j.diabres.2017.06.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIMS To investigate the alteration pattern and physiologic state of islet-specific miR-7 in the serum of patients with type 2 diabetes mellitus (T2DM) and T2DM-associated microvascular complications (T2DMC) and to evaluate its clinical significance. METHODS The levels of serum miR-7 were firstly examined and compared in 76 T2DM patients, 76 T2DMC patients and 74 age-gender matched controls using RT-qPCR. Subsequently, the physiologic state of serum miR-7 was characterized by determining its concentrations in isolated exosomes and corresponding exosome-free samples from the same three cohorts' samples. Moreover, statistical analyzes were performed to evaluate the associations of serum miR-7 with T2DM and T2DMC. RESULTS Serum miR-7 was significantly elevated in the T2DM patients [(401.0±34.37) fmol/L, P<0.001] and in the T2DMC patients [(501.4±81.69) fmol/L, P<0.001] when compared with the controls [(175.7±16.59) fmol/L]. Circulating miR-7 was mainly existed as exosome-free form rather than in membrane-bound exosomes. The concentrations of exosome-free miR-7 were markedly higher in the T2DM group [(107.2±9.63) fmol/L, P<0.001] and in the T2DMC group [(122.1±10.80) fmol/L, P<0.001] compared to the control group [(54.18±2.37) fmol/L]. Logistic regression and ROC curve analyses revealed the serum miR-7 was significantly associated with T2DM and microvascular complications (P<0.05). CONCLUSION Increased serum miR-7 might have the potential as a promising marker for T2DM and its microvascular complications.
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Affiliation(s)
- Shujun Wan
- Department of Clinical Laboratory, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University School of Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Nanjing University, Nanjing 210023, China
| | - Jun Wang
- Department of Cardiology, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Jing Wang
- Department of Clinical Laboratory, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Jia Wu
- Department of Clinical Laboratory, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Jiaxi Song
- Department of Clinical Laboratory, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Chen-Yu Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University School of Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Nanjing University, Nanjing 210023, China
| | - Chunni Zhang
- Department of Clinical Laboratory, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University School of Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Nanjing University, Nanjing 210023, China
| | - Cheng Wang
- Department of Clinical Laboratory, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University School of Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Nanjing University, Nanjing 210023, China.
| | - Jun-Jun Wang
- Department of Clinical Laboratory, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University School of Life Sciences, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Nanjing University, Nanjing 210023, China.
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Culturing and transcriptome profiling of progenitor-like colonies derived from adult mouse pancreas. Stem Cell Res Ther 2017; 8:172. [PMID: 28747214 PMCID: PMC5530554 DOI: 10.1186/s13287-017-0626-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 06/16/2017] [Accepted: 07/03/2017] [Indexed: 12/18/2022] Open
Abstract
Background Transplantation of insulin-producing cells is considered an important diabetes therapy. Many research studies have shown that insulin-producing cells can be derived from the in-vitro cultured pancreatic colonies with self-renewal ability and multilineage potential. Even though these progenitor-like colonies have been prepared from adult pancreas cells, the efficient culture method is hardly established and regulation of the colonies is rarely known. We confirmed previously that single cells acquired from adult mouse pancreas could form cyst-like colonies in a 3D semi-solid system containing Matrigel and methylcellulose. These colonies could be passaged continuously without losing progenitor-like capacity. In the previous culturing system, however, conditioned medium from murine embryonic-stem-cell-derived pancreatic-like cells was used. This unregulated ingredient may reduce repeatability and affect following study. Thus, a new culturing system with certain components needs to be developed. Methods Single cell suspension was acquired from adult mouse pancreas and cultured in a Matrigel-based 3D system with epidermal growth factor, Nicotinamide, B27, and Noggin to form ring colonies. Serial-passage assay was performed to evaluate self-renewal ability. Real-time polymerase chain reaction and immunostaining were used to detect the expression of progenitor-related genes. A 2D differentiation method was used to testify the multilineage potency of the colonies. High-throughput sequencing (HTS) of the colonies was performed to profile the differentially expressed genes. Results We developed a 3D culturing system deprived of conditioned medium to propagate those colonies with high proliferative efficiency. HTS of the transcriptome of mRNAs, microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) showed differentially expressed genes compared to the whole pancreas (as control). In mRNAs, several surface marker genes were identified in the colonies. Moreover in noncoding RNAs, miR-21a, miR-31 and miR-155 were upregulated and miR-217, miR-802 and miR-375 were downregulated in colonies along with a number of other miRNAs and lncRNAs. Conclusions Our results offer an efficient culture system for pancreatic progenitor-like colonies and HTS of the colonies serves as a target resource for following study of in-vitro cultured pancreatic progenitors. These findings should also contribute to our understanding of the transcriptional regulation of these progenitor-like colonies and the mechanisms behind their functions. Electronic supplementary material The online version of this article (doi:10.1186/s13287-017-0626-y) contains supplementary material, which is available to authorized users.
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Sims EK, Lakhter AJ, Anderson-Baucum E, Kono T, Tong X, Evans-Molina C. MicroRNA 21 targets BCL2 mRNA to increase apoptosis in rat and human beta cells. Diabetologia 2017; 60:1057-1065. [PMID: 28280903 PMCID: PMC5425307 DOI: 10.1007/s00125-017-4237-z] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/03/2017] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS The role of beta cell microRNA (miR)-21 in the pathophysiology of type 1 diabetes has been controversial. Here, we sought to define the context of beta cell miR-21 upregulation in type 1 diabetes and the phenotype of beta cell miR-21 overexpression through target identification. METHODS Islets were isolated from NOD mice and mice treated with multiple low doses of streptozotocin, as a mouse model of diabetes. INS-1 832/13 beta cells and human islets were treated with IL-1β, IFN-γ and TNF-α to mimic the milieu of early type 1 diabetes. Cells and islets were transfected with miR-21 mimics or inhibitors. Luciferase assays and polyribosomal profiling (PRP) were performed to define miR-21-target interactions. RESULTS Beta cell miR-21 was increased in in vivo models of type 1 diabetes and cytokine-treated cells/islets. miR-21 overexpression decreased cell count and viability, and increased cleaved caspase 3 levels, suggesting increased cell death. In silico prediction tools identified the antiapoptotic mRNA BCL2 as a conserved miR-21 target. Consistent with this, miR-21 overexpression decreased BCL2 transcript and B cell lymphoma 2 (BCL2) protein production, while miR-21 inhibition increased BCL2 protein levels and reduced cleaved caspase 3 levels after cytokine treatment. miR-21-mediated cell death was abrogated in 828/33 cells, which constitutively overexpress Bcl2. Luciferase assays suggested a direct interaction between miR-21 and the BCL2 3' untranslated region. With miR-21 overexpression, PRP revealed a shift of the Bcl2 message towards monosome-associated fractions, indicating inhibition of Bcl2 translation. Finally, overexpression in dispersed human islets confirmed a reduction in BCL2 transcripts and increased cleaved caspase 3 production. CONCLUSIONS/INTERPRETATION In contrast to the pro-survival role reported in other systems, our results demonstrate that miR-21 increases beta cell death via BCL2 transcript degradation and inhibition of BCL2 translation.
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Affiliation(s)
- Emily K Sims
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, 635 Barnhill Drive, MS2031, Indianapolis, IN, 46202, USA.
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA.
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA.
| | - Alexander J Lakhter
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, 635 Barnhill Drive, MS2031, Indianapolis, IN, 46202, USA
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Emily Anderson-Baucum
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, 635 Barnhill Drive, MS2031, Indianapolis, IN, 46202, USA
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Tatsuyoshi Kono
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, 635 Barnhill Drive, MS2031, Indianapolis, IN, 46202, USA
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Xin Tong
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, 635 Barnhill Drive, MS2031, Indianapolis, IN, 46202, USA
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Carmella Evans-Molina
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, 635 Barnhill Drive, MS2031, Indianapolis, IN, 46202, USA
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
- Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA
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78
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Barutta F, Bruno G, Matullo G, Chaturvedi N, Grimaldi S, Schalkwijk C, Stehouwer CD, Fuller JH, Gruden G. MicroRNA-126 and micro-/macrovascular complications of type 1 diabetes in the EURODIAB Prospective Complications Study. Acta Diabetol 2017; 54:133-139. [PMID: 27696070 DOI: 10.1007/s00592-016-0915-4] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 08/22/2016] [Indexed: 12/12/2022]
Abstract
AIMS Increasing evidence suggests a potential role of circulating miRNAs as clinical biomarkers, and loss of miRNA-126 has been proposed as a predictor of type 2 diabetes onset. However, a systematic analysis of circulating miRNAs in type 1 diabetic patients with micro-/macrovascular complications has not yet been performed. METHODS A cross-sectional nested case-control study from the EURODIAB Prospective Complications Study of 455 type 1 diabetic patients was performed. Case subjects (n = 312) were defined as those with one or more complications of diabetes; control subjects (n = 143) were those with no evidence of any complication. A differential miRNA expression profiling was performed in pooled serum samples from cases and controls. Furthermore, miR-126 levels were quantified by qPCR in all individual samples and associations with diabetic complications investigated. RESULTS Twenty-five miRNAs differed in pooled samples from cases and controls. miR-126 levels were significantly lower in case than in control subjects, even after adjustment for age and sex. In logistic regression analyses, miR-126 was negatively associated with all complications (OR = 0.85, 95 % CI 0.75-0.96) as well as with each micro-/macrovascular complication examined separately. This was likely dependent of diabetes as associations were no longer significant after adjustment for both hyperglycemia and diabetes duration. However, a significant 25 % risk reduction, independent of age, sex, A1C, and diabetes duration, was still observed for proliferative retinopathy (OR = 0.75, 95 % CI 0.59-0.95). CONCLUSIONS In this large cohort of type 1 diabetic subjects, we found that miR-126 levels are associated with vascular complications of diabetes, particularly with proliferative retinopathy.
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Affiliation(s)
- Federica Barutta
- Diabetic Nephropathy Laboratory, Department of Medical Sciences, University of Turin, C/so Dogliotti 14, 10126, Turin, Italy.
| | - Graziella Bruno
- Diabetic Nephropathy Laboratory, Department of Medical Sciences, University of Turin, C/so Dogliotti 14, 10126, Turin, Italy
| | - Giuseppe Matullo
- Diabetic Nephropathy Laboratory, Department of Medical Sciences, University of Turin, C/so Dogliotti 14, 10126, Turin, Italy
- Human Genetics Foundation (HuGeF), Turin, Italy
| | - Nish Chaturvedi
- Institute of Cardiovascular Science, University College London, London, UK
| | - Serena Grimaldi
- Diabetic Nephropathy Laboratory, Department of Medical Sciences, University of Turin, C/so Dogliotti 14, 10126, Turin, Italy
| | - Casper Schalkwijk
- Department of Internal Medicine and Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Coen D Stehouwer
- Department of Internal Medicine and Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - John H Fuller
- Department of Epidemiology and Public-Health, Royal Free and University College London, Medical School, London, UK
| | - Gabriella Gruden
- Diabetic Nephropathy Laboratory, Department of Medical Sciences, University of Turin, C/so Dogliotti 14, 10126, Turin, Italy
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79
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Martinez-Sanchez A, Rutter GA, Latreille M. MiRNAs in β-Cell Development, Identity, and Disease. Front Genet 2017; 7:226. [PMID: 28123396 PMCID: PMC5225124 DOI: 10.3389/fgene.2016.00226] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 12/21/2016] [Indexed: 12/22/2022] Open
Abstract
Pancreatic β-cells regulate glucose metabolism by secreting insulin, which in turn stimulates the utilization or storage of the sugar by peripheral tissues. Insulin insufficiency and a prolonged period of insulin resistance are usually the core components of type 2 diabetes (T2D). Although, decreased insulin levels in T2D have long been attributed to a decrease in β-cell function and/or mass, this model has recently been refined with the recognition that a loss of β-cell “identity” and dedifferentiation also contribute to the decline in insulin production. MicroRNAs (miRNAs) are key regulatory molecules that display tissue-specific expression patterns and maintain the differentiated state of somatic cells. During the past few years, great strides have been made in understanding how miRNA circuits impact β-cell identity. Here, we review current knowledge on the role of miRNAs in regulating the acquisition of the β-cell fate during development and in maintaining mature β-cell identity and function during stress situations such as obesity, pregnancy, aging, or diabetes. We also discuss how miRNA function could be harnessed to improve our ability to generate β-cells for replacement therapy for T2D.
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Affiliation(s)
- Aida Martinez-Sanchez
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Imperial College London London, UK
| | - Guy A Rutter
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Imperial College London London, UK
| | - Mathieu Latreille
- Cellular Identity and Metabolism Group, MRC London Institute of Medical SciencesLondon, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College LondonLondon, UK
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80
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Sharma S, Mathew AB, Chugh J. miRNAs: Nanomachines That Micromanage the Pathophysiology of Diabetes Mellitus. Adv Clin Chem 2017; 82:199-264. [PMID: 28939211 DOI: 10.1016/bs.acc.2017.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Diabetes mellitus (DM) refers to a combination of heterogeneous complex metabolic disorders that are associated with episodes of hyperglycemia and glucose intolerance occurring as a result of defects in insulin secretion, action, or both. The prevalence of DM is increasing at an alarming rate, and there exists a need to develop better therapeutics and prognostic markers for earlier detection and diagnosis. In this review, after giving a brief introduction of diabetes mellitus and microRNA (miRNA) biogenesis pathway, we first describe various in vitro and animal model systems that have been developed to study diabetes. Further, we elaborate on the significant roles played by miRNAs as regulators of gene expression in the context of development of diabetes and its secondary complications. The different approaches to quantify miRNAs and their potential to be used as therapeutic targets for alleviation of diabetes have also been discussed.
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81
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Hashimoto N, Tanaka T. Role of miRNAs in the pathogenesis and susceptibility of diabetes mellitus. J Hum Genet 2016; 62:141-150. [PMID: 27928162 DOI: 10.1038/jhg.2016.150] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 10/23/2016] [Accepted: 11/04/2016] [Indexed: 12/16/2022]
Abstract
MicroRNAs (miRNAs) are noncoding RNAs of ~22 nucleotides that regulate gene expression post-transcriptionally by binding to the 3' untranslated region of messenger RNA (mRNAs), resulting in inhibition of translation or mRNA degradation. miRNAs have a key role in fine-tuning cellular functions such as proliferation, differentiation and apoptosis, and they are involved in carcinogenesis, glucose homeostasis, inflammation and other biological processes. In this review, we focus on the role of miRNAs in the pathophysiology of the metabolic disease and diabetes mellitus, the hallmark of which is hyperglycemia caused by defective insulin secretion and/or action. A growing number of studies have revealed the association between miRNAs and the processes of insulin production and secretion in pancreatic β cells. In addition, aberrant expression of miRNAs in skeletal muscle, adipose tissue and liver has also been reported. Intriguingly, the tumor suppressor p53 has been implicated in the pathogenesis of diabetes in association with a number of miRNAs, suggesting that a p53/miRNA pathway might be a therapeutic target. Moreover, data from genome-wide association studies have revealed that several miRNA target sequences overlap type 2 diabetes susceptibility loci. Finally, the recent discovery of circulating miRNAs associated with diabetes onset/progression suggests the potential use of miRNAs as biomarkers.
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Affiliation(s)
- Naoko Hashimoto
- Department of Clinical Cell Biology and Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Division of Diabetes, Endocrinology and Metabolism, Chiba University Hospital, Chiba, Japan.,AMED-CREST, AMED, Japan Agency for Medical Research and Development, Tokyo, Japan
| | - Tomoaki Tanaka
- Division of Diabetes, Endocrinology and Metabolism, Chiba University Hospital, Chiba, Japan.,AMED-CREST, AMED, Japan Agency for Medical Research and Development, Tokyo, Japan.,Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, Chiba, Japan
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82
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Isaacs SR, Wang J, Kim KW, Yin C, Zhou L, Mi QS, Craig ME. MicroRNAs in Type 1 Diabetes: Complex Interregulation of the Immune System, β Cell Function and Viral Infections. Curr Diab Rep 2016; 16:133. [PMID: 27844276 DOI: 10.1007/s11892-016-0819-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Since the discovery of the first mammalian microRNA (miRNA) more than two decades ago, a plethora of miRNAs has been identified in humans, now amounting to more than 2500. Essential for post-transcriptional regulation of gene networks integral for developmental pathways and immune response, it is not surprising that dysregulation of miRNAs is often associated with the aetiology of complex diseases including cancer, diabetes and autoimmune disorders. Despite massive expansion of small RNA studies and extensive investigation in diverse disease contexts, the role of miRNAs in type 1 diabetes has only recently been explored. Key studies using human islets have recently implicated virus-induced miRNA dysregulation as a pivotal mechanism of β cell destruction, while the interplay between miRNAs, the immune system and β cell survival has been illustrated in studies using animal and cellular models of disease. The role of specific miRNAs as major players in immune system homeostasis highlights their exciting potential as therapeutics and prognostic biomarkers of type 1 diabetes.
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Affiliation(s)
- Sonia R Isaacs
- School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Sydney, NSW, 2052, Australia
- UNSW and POWH Virology Research Laboratory, Prince of Wales Hospital, Sydney, NSW, 2031, Australia
| | - Jie Wang
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, 48202, USA
- Department of Dermatology, Henry Ford Health System, Detroit, MI, 48202, USA
| | - Ki Wook Kim
- School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Sydney, NSW, 2052, Australia
- UNSW and POWH Virology Research Laboratory, Prince of Wales Hospital, Sydney, NSW, 2031, Australia
| | - Congcong Yin
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, 48202, USA
- Department of Dermatology, Henry Ford Health System, Detroit, MI, 48202, USA
| | - Li Zhou
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, 48202, USA
- Department of Dermatology, Henry Ford Health System, Detroit, MI, 48202, USA
- Department of Internal Medicine, Henry Ford Health System, Detroit, MI, 48202, USA
| | - Qing Sheng Mi
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, 48202, USA
- Department of Dermatology, Henry Ford Health System, Detroit, MI, 48202, USA
- Department of Internal Medicine, Henry Ford Health System, Detroit, MI, 48202, USA
| | - Maria E Craig
- School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Sydney, NSW, 2052, Australia.
- UNSW and POWH Virology Research Laboratory, Prince of Wales Hospital, Sydney, NSW, 2031, Australia.
- Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Sydney, NSW, 2145, Australia.
- Discipline of Child and Adolescent Health, University of Sydney, Sydney, NSW, 2006, Australia.
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83
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Qin Z, Wang PY, Su DF, Liu X. miRNA-124 in Immune System and Immune Disorders. Front Immunol 2016; 7:406. [PMID: 27757114 PMCID: PMC5047895 DOI: 10.3389/fimmu.2016.00406] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 09/21/2016] [Indexed: 12/21/2022] Open
Abstract
In recent years, miR-124 has emerged as a critical modulator of immunity and inflammation. Here, we summarize studies on the function and mechanism of miR-124 in the immune system and immunity-related diseases. They indicated that miR-124 exerts a crucial role in the development of immune system, regulation of immune responses, and inflammatory disorders. It is evident that miR-124 may serve as an informative diagnostic biomarker and therapeutic target in the future.
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Affiliation(s)
- Zhen Qin
- Department of Pharmacology, School of Pharmacy, Second Military Medical University , Shanghai , China
| | - Peng-Yuan Wang
- Department of Pharmacology, School of Pharmacy, Second Military Medical University , Shanghai , China
| | - Ding-Feng Su
- Department of Pharmacology, School of Pharmacy, Second Military Medical University , Shanghai , China
| | - Xia Liu
- Department of Pharmacology, School of Pharmacy, Second Military Medical University , Shanghai , China
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84
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Baeyens L, Hindi S, Sorenson RL, German MS. β-Cell adaptation in pregnancy. Diabetes Obes Metab 2016; 18 Suppl 1:63-70. [PMID: 27615133 PMCID: PMC5384851 DOI: 10.1111/dom.12716] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 06/09/2016] [Indexed: 12/15/2022]
Abstract
Pregnancy in placental mammals places unique demands on the insulin-producing β-cells in the pancreatic islets of Langerhans. The pancreas anticipates the increase in insulin resistance that occurs late in pregnancy by increasing β-cell numbers and function earlier in pregnancy. In rodents, this β-cell expansion depends on secreted placental lactogens that signal through the prolactin receptor. Then at the end of pregnancy, the β-cell population contracts back to its pre-pregnancy size. In the current review, we focus on how glucose metabolism changes during pregnancy, how β-cells anticipate these changes through their response to lactogens and what molecular mechanisms guide the adaptive compensation. In addition, we summarize current knowledge of β-cell adaptation during human pregnancy and what happens when adaptation fails and gestational diabetes ensues. A better understanding of human β-cell adaptation to pregnancy would benefit efforts to predict, prevent and treat gestational diabetes.
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Affiliation(s)
- L Baeyens
- Diabetes Center, University of California San Francisco, San Francisco
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California San Francisco, San Francisco
| | - S Hindi
- Diabetes Center, University of California San Francisco, San Francisco
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California San Francisco, San Francisco
- Department of Medicine, University of California San Francisco, San Francisco
| | - R L Sorenson
- Department of Genetics, Cell Biology and Development, University of Minnesota Medical School, Minneapolis
| | - M S German
- Diabetes Center, University of California San Francisco, San Francisco.
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California San Francisco, San Francisco.
- Department of Medicine, University of California San Francisco, San Francisco.
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85
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Safdar A, Saleem A, Tarnopolsky MA. The potential of endurance exercise-derived exosomes to treat metabolic diseases. Nat Rev Endocrinol 2016; 12:504-17. [PMID: 27230949 DOI: 10.1038/nrendo.2016.76] [Citation(s) in RCA: 271] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Endurance exercise-mediated multisystemic adaptations are known to mitigate metabolism-related disorders such as obesity and type 2 diabetes mellitus (T2DM). However, the underlying molecular mechanisms that promote crosstalk between organs and orchestrate the pro-metabolic effects of endurance exercise remain unclear. Exercise-induced release of peptides and nucleic acids from skeletal muscle and other organs (collectively termed 'exerkines') has been implicated in mediating these systemic adaptations. Given that the extracellular milieu is probably not a hospitable environment for labile exerkines, a lipid vehicle-based mode of delivery has originated over the course of evolution. Two types of extracellular vesicles, exosomes and microvesicles, have been shown to contain proteins and nucleic acids that participate in a variety of physiological and pathological processes. Exosomes, in particular, have been shown to facilitate the exchange of peptides, microRNA, mRNA and mitochondrial DNA between cells and tissues. Intriguingly, circulatory extracellular vesicle content increases in an intensity-dependant manner in response to endurance exercise. We propose that the systemic benefits of exercise are modulated by exosomes and/or microvesicles functioning in an autocrine, paracrine and/or endocrine manner. Furthermore, we posit that native or modified exosomes, and/or microvesicles enriched with exerkines will have therapeutic utility in the treatment of obesity and T2DM.
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Affiliation(s)
- Adeel Safdar
- Department of Pediatrics, McMaster University, 1200 Main Street West, Hamilton, Ontario L8N 3Z5, Canada
| | - Ayesha Saleem
- Department of Pediatrics, McMaster University, 1200 Main Street West, Hamilton, Ontario L8N 3Z5, Canada
| | - Mark A Tarnopolsky
- Department of Pediatrics, McMaster University, 1200 Main Street West, Hamilton, Ontario L8N 3Z5, Canada
- Department of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
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86
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Abstract
PURPOSE OF REVIEW The purpose of this review is to summarize recent advances in the development of nucleic acid-based biomarkers of type 1 diabetes (T1D). RECENT FINDINGS Recent rodent and human studies have identified new roles for stress pathways intrinsic to the β cell during the development of T1D. As such, methods to identify an authentic nucleic acid signature of β cell stress and/or death may improve our ability to predict T1D at earlier timepoints, allowing for optimal timing of immunomodulatory interventions. To this end, both targeted and unbiased approaches have begun to identify changes in microRNA expression patterns in T1D. Moreover, a number of groups have developed distinct assays that quantitatively detect circulating unmethylated insulin DNA, which is thought to primarily emanate from dying β cells. SUMMARY Here we highlight unique blood and urine microRNA signatures identified in T1D cohorts, compare differences between first, second, and third-generation assays that detect circulating unmethylated insulin DNA, and review recent technological advances that have the capacity to improve T1D biomarker development.
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Affiliation(s)
- Farooq Syed
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Carmella Evans-Molina
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- The Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- The Roudebush VA Medical Center, Indianapolis, IN 46202, USA
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87
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Xu G, Chen J, Jing G, Grayson TB, Shalev A. miR-204 Targets PERK and Regulates UPR Signaling and β-Cell Apoptosis. Mol Endocrinol 2016; 30:917-24. [PMID: 27384111 DOI: 10.1210/me.2016-1056] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Endoplasmic reticulum (ER) stress plays an important role in the pathogenesis of diabetes and the associated β-cell apoptosis. Although microRNAs (miRNAs) have been widely studied in various diseases including diabetes, the role of miRNAs in ER stress and β-cell apoptosis has only started to be elucidated. We recently showed that diabetes increases β-cell miR-204 and have now discovered that miR-204 directly targets the 3'untranslated region of protein kinase R-like ER kinase (PERK), 1 of the 3 ER transmembrane sensors and a key factor of the unfolded protein response (UPR). In addition, by using primary human islets, mouse islets, and INS-1 β-cells, we found that miR-204 decreased PERK expression as well as its downstream factors, activating transcription factor 4 and CCAAT enhancer-binding protein homologous protein, whereas it had no effect on the other 2 ER transmembrane sensors, activating transcription factor 6 and inositol-requiring enzyme-1α. Interestingly, we discovered that miR-204 also inhibited PERK signaling in the context of ER stress, and this exacerbated ER stress-induced β-cell apoptosis. This effect could be mimicked by PERK inhibitors supporting the notion that the miR-204-mediated inhibition of PERK and UPR signaling was conferring these detrimental effects on cell survival. Taken together, we have identified PERK as a novel target of miR-204 and show that miR-204 inhibits PERK signaling and increases ER stress-induced cell death, revealing for the first time a link between this miRNA and UPR.
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Affiliation(s)
- Guanlan Xu
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Alabama at Birmingham, Birmingham, Alabama 35294-2182
| | - Junqin Chen
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Alabama at Birmingham, Birmingham, Alabama 35294-2182
| | - Gu Jing
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Alabama at Birmingham, Birmingham, Alabama 35294-2182
| | - Truman B Grayson
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Alabama at Birmingham, Birmingham, Alabama 35294-2182
| | - Anath Shalev
- Comprehensive Diabetes Center and Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Alabama at Birmingham, Birmingham, Alabama 35294-2182
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88
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Vestergaard AL, Blankestijn M, Stahl JL, Pallesen EMH, Bang-Berthelsen CH, Pociot F, Novotny GW, Lundh M, Mandrup-Poulsen T. A Systematic Comparison of Purification and Normalization Protocols for Quantitative MicroRNA Expressional Profiling in Insulin-Producing Cells. Int J Mol Sci 2016; 17:ijms17060896. [PMID: 27338345 PMCID: PMC4926430 DOI: 10.3390/ijms17060896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 05/12/2016] [Accepted: 05/30/2016] [Indexed: 12/12/2022] Open
Abstract
As microRNAs (miRs) are gaining increasing attention as key regulators of cellular processes, expressional quantification is widely applied. However, in the processing of relatively quantified data, the importance of testing the stability of several reference mRNAs and/or miRs and choosing among these for normalization is often overlooked, potentially leading to biased results. Here, we have optimized the purification of miR-enriched total RNA from pancreatic insulin-producing INS-1 cells. Additionally, we optimized and analyzed miR expression by a qPCR-based microarray and by specific qPCR and tested the stability of candidate reference mRNAs and miRs. Hence, this study gives a widely applicable example on how to easily and systematically test and decide how to normalize miR quantification. We suggest that caution in the interpretation of miR quantification studies that do not comprise stability analysis should be exerted.
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Affiliation(s)
- Anna Lindeløv Vestergaard
- Laboratory for Immuno-Endocrinology, Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
| | - Maaike Blankestijn
- Laboratory for Immuno-Endocrinology, Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
| | - Jonathan Lucien Stahl
- Laboratory for Immuno-Endocrinology, Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
| | - Emil Marek Heymans Pallesen
- Laboratory for Immuno-Endocrinology, Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
| | - Claus Heiner Bang-Berthelsen
- Center for Non-coding RNA in Technology and Health, Department of Pediatrics, Herlev and Gentofte Hospital, 2730 Herlev, Denmark.
| | - Flemming Pociot
- Center for Non-coding RNA in Technology and Health, Department of Pediatrics, Herlev and Gentofte Hospital, 2730 Herlev, Denmark.
- Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
| | - Guy Wayne Novotny
- Laboratory for Immuno-Endocrinology, Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
| | - Morten Lundh
- Laboratory for Immuno-Endocrinology, Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
| | - Thomas Mandrup-Poulsen
- Laboratory for Immuno-Endocrinology, Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
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89
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Epigenetic changes in diabetes. Neurosci Lett 2016; 625:64-9. [PMID: 27130819 DOI: 10.1016/j.neulet.2016.04.046] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 04/20/2016] [Accepted: 04/21/2016] [Indexed: 12/13/2022]
Abstract
The incidence of diabetes is increasing worldwide. Diabetes is quickly becoming one of the leading causes of death. Diabetes is a genetic disease; however, the environment plays critical roles in its development and progression. Epigenetic changes often translate environmental stimuli to changes in gene expression. Changes in epigenetic marks and differential regulation of epigenetic modulators have been observed in different models of diabetes and its associated complications. In this minireview, we will focus DNA methylation, Histone acetylation and methylation and their roles in the pathogenesis of diabetes.
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Richardson SJ, Horwitz MS. miR, miR in the Cell, Does the Virus Control Them All? Diabetes 2016; 65:823-5. [PMID: 27208018 DOI: 10.2337/dbi15-0039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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