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Lv X, Gao J, Yang J, Zou Y, Chen J, Sun Y, Song J, Liu Y, Wang L, Xia L, Yu S, Wei Z, Chen L, Hou X. Clinical and functional characterization of a novel KCNJ11 (c.101G > A, p.R34H) mutation associated with maturity-onset diabetes mellitus of the young type 13. Endocrine 2024:10.1007/s12020-024-03873-6. [PMID: 38761346 DOI: 10.1007/s12020-024-03873-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 05/09/2024] [Indexed: 05/20/2024]
Abstract
PURPOSE This study aimed to describe the clinical features, diagnostic and therapeutic course of a patient with MODY13 caused by KCNJ11 (c.101G > A, p.R34H) and how it contributes to the pathogenesis of MODY13, and to explore new therapeutic targets. METHODS Whole-exome sequencing was used to screen prediagnosed individuals and family members with clinically suspected KCNJ11 mutations. Real-time fluorescence quantitative PCR, western blotting, thallium flux of potassium channels, glucose-stimulated insulin secretion (GSIS), and immunofluorescence assays were used to analyze the regulation of insulin secretion by the KCNJ11 mutant in MIN6 cells. Daily blood glucose levels were continuously monitored for 14 days in the proband using the ambulatory blood glucose meter (SIBIONICS). RESULTS Mutation screening of the entire exon of the gene identified a heterozygous KCNJ11 (c.101G > A, p.R34H) mutation in the proband and his mother. Cell-based GSIS assays after transfection of MIN6 using wild-type and mutant plasmids revealed that this mutation impaired insulin secretory function. Furthermore, we found that this impaired secretory function is associated with reduced functional activity of the mutant KCNJ11 protein and reduced expression of the insulin secretion-associated exocytosis proteins STXBP1 and SNAP25. CONCLUSION For the first time, we revealed the pathogenic mechanism of KCNJ11 (c.101G > A, p.R34H) associated with MODY13. This mutant can cause alterations in KATP channel activity, reduce sensitivity to glucose stimulation, and impair pancreatic β-cell secretory function by downregulating insulin secretion-associated exocytosis proteins. Therefore, oral sulfonylurea drugs can lower blood glucose levels through pro-insulinotropic effects and are more favorable for patients with this mutation.
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Affiliation(s)
- Xiaoyu Lv
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Jing Gao
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Jingwen Yang
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Ying Zou
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Jun Chen
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Yujing Sun
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Jia Song
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Yiran Liu
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Liming Wang
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Longqing Xia
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Shijia Yu
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Zichun Wei
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Li Chen
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, 250012, Shandong, China
| | - Xinguo Hou
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China.
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, China.
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, China.
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, 250012, Shandong, China.
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Cunha E Rocha K, Ying W, Olefsky JM. Exosome-Mediated Impact on Systemic Metabolism. Annu Rev Physiol 2024; 86:225-253. [PMID: 38345906 DOI: 10.1146/annurev-physiol-042222-024535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Exosomes are small extracellular vesicles that carry lipids, proteins, and microRNAs (miRNAs). They are released by all cell types and can be found not only in circulation but in many biological fluids. Exosomes are essential for interorgan communication because they can transfer their contents from donor to recipient cells, modulating cellular functions. The miRNA content of exosomes is responsible for most of their biological effects, and changes in exosomal miRNA levels can contribute to the progression or regression of metabolic diseases. As exosomal miRNAs are selectively sorted and packaged into exosomes, they can be useful as biomarkers for diagnosing diseases. The field of exosomes and metabolism is expanding rapidly, and researchers are consistently making new discoveries in this area. As a result, exosomes have great potential for a next-generation drug delivery platform for metabolic diseases.
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Affiliation(s)
- Karina Cunha E Rocha
- Department of Medicine, Division of Endocrinology and Metabolism, University of California, San Diego, La Jolla, California, USA;
| | - Wei Ying
- Department of Medicine, Division of Endocrinology and Metabolism, University of California, San Diego, La Jolla, California, USA;
| | - Jerrold M Olefsky
- Department of Medicine, Division of Endocrinology and Metabolism, University of California, San Diego, La Jolla, California, USA;
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Bao Y, Wu L, Liu Y, Fan C, Zhang J, Yang J. Role of CircCHD2 in the pathogenesis of gestational diabetes mellitus by regulating autophagy via miR-33b-3p/ULK1 axis. Placenta 2024; 145:27-37. [PMID: 38039841 DOI: 10.1016/j.placenta.2023.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/03/2023]
Abstract
Gestational diabetes mellitus (GDM) is a common pregnancy complication with a high incidence in women; however, its pathophysiology remains unknown. Our previous study suggested that the circCHD2/miR-33b-3p/ULK1 axis may be involved in GDM pathogenesis. However, the mechanism through which circCHD2 regulates GDM development requires further investigation. We found that high-glucose (HG, 25 mmol/L) significantly induced the expression of circCHD2, increased autophagy and apoptosis, and decreased cell viability in human placental trophoblast HTR-8/SVneo cells. In contrast, the downregulation of circCHD2 significantly attenuated the effects of HG on HTR-8/SVneo cells. MiR-33b-3p downregulated in the placenta of GDM patients was reduced by HG and detected as a target of circCHD2 using bioinformatics analysis, a dual-luciferase reporter assay, and qRT-PCR assay. Further studies showed that the inhibition of miR-33b-3p significantly blocked the effects of circCHD2 downregulation on cell viability, apoptosis, and autophagy in HG-treated HTR-8/SVneo cells. ULK1 is a target of miR-33b-3p, based on bioinformatics analysis, a dual-luciferase reporter assay, qRT-PCR assay, and Western blot analysis. Compared to miR-33b-3p, ULK1 is upregulated in the placenta of GDM patients. ULK1 overexpression notably blocked the effects of miR-33b-3p mimics on cell viability, apoptosis, and autophagy in HG-treated HTR-8/SVneo cells. These findings suggested that circCHD2 acts as an autophagy promoter via the miR-33b-3p/ULK1 axis to induce apoptosis in HTR-8/SVneo cells, suggesting that circCHD2 is a potential diagnostic and therapeutic target for GDM.
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Affiliation(s)
- Yindi Bao
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Lianzhi Wu
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yi Liu
- Department of Obstetrics and Gynecology, Xiaogan Central Hospital Affiliated of Wuhan University of Science and Technology, Xiaogan, 432003, China
| | - Cuifang Fan
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jun Zhang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
| | - Jing Yang
- Reproductive Medical Center/Hubei Medical Clinical Research Center for Assisted Reproductive Technology and Embryonic Development, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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González-Domínguez Á, Belmonte T, González-Domínguez R. Childhood obesity, metabolic syndrome, and oxidative stress: microRNAs go on stage. Rev Endocr Metab Disord 2023; 24:1147-1164. [PMID: 37672200 PMCID: PMC10698091 DOI: 10.1007/s11154-023-09834-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/25/2023] [Indexed: 09/07/2023]
Abstract
The incidence of childhood obesity and metabolic syndrome has grown notably in the last years, becoming major public health burdens in developed countries. Nowadays, oxidative stress is well-recognized to be closely associated with the onset and progression of several obesity-related complications within the framework of a complex crosstalk involving other intertwined pathogenic events, such as inflammation, insulin disturbances, and dyslipidemia. Thus, understanding the molecular basis behind these oxidative dysregulations could provide new approaches for the diagnosis, prevention, and treatment of childhood obesity and associated disorders. In this respect, the transcriptomic characterization of miRNAs bares great potential because of their involvement in post-transcriptional modulation of genetic expression. Herein, we provide a comprehensive literature revision gathering state-of-the-art research into the association between childhood obesity, metabolic syndrome, and miRNAs. We put special emphasis on the potential role of miRNAs in modulating obesity-related pathogenic events, with particular focus on oxidative stress.
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Affiliation(s)
- Álvaro González-Domínguez
- Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Universidad de Cádiz, Cádiz, 11009, Spain.
| | - Thalía Belmonte
- Translational Research in Respiratory Medicine, University Hospital Arnau de Vilanova and Santa Maria, IRBLleida, Lleida, Spain
- CIBER of Respiratory Diseases (CIBERES), Institute of Health Carlos III, Madrid, Spain
| | - Raúl González-Domínguez
- Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Universidad de Cádiz, Cádiz, 11009, Spain
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Dandare A, Khan MJ, Naeem A, Liaquat A. Clinical relevance of circulating non-coding RNAs in metabolic diseases: Emphasis on obesity, diabetes, cardiovascular diseases and metabolic syndrome. Genes Dis 2023; 10:2393-2413. [PMID: 37554181 PMCID: PMC10404886 DOI: 10.1016/j.gendis.2022.05.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 05/11/2022] [Indexed: 11/22/2022] Open
Abstract
Non-coding RNAs (ncRNAs) participate in the regulation of several cellular processes including transcription, RNA processing and genome rearrangement. The aberrant expression of ncRNAs is associated with several pathological conditions. In this review, we focused on recent information to elucidate the role of various regulatory ncRNAs i.e., micro RNAs (miRNAs), circular RNAs (circRNAs) and long-chain non-coding RNAs (lncRNAs), in metabolic diseases, e.g., obesity, diabetes mellitus (DM), cardiovascular diseases (CVD) and metabolic syndrome (MetS). The mechanisms by which ncRNAs participated in disease pathophysiology were also highlighted. miRNAs regulate the expression of genes at transcriptional and translational levels. circRNAs modulate the regulation of gene expression via miRNA sponging activity, interacting with RNA binding protein and polymerase II transcription regulation. lncRNAs regulate the expression of genes by acting as a protein decoy, miRNA sponging, miRNA host gene, binding to miRNA response elements (MRE) and the recruitment of transcriptional element or chromatin modifiers. We examined the role of ncRNAs in the disease pathogenesis and their potential role as molecular markers for diagnosis, prognosis and therapeutic targets. We showed the involvement of ncRNAs in the onset of obesity and its progression to MetS and CVD. miRNA-192, miRNA-122, and miRNA-221 were dysregulated in all these metabolic diseases. Other ncRNAs, implicated in at least three diseases include miRNA-15a, miRNA-26, miRNA-27a, miRNA-320, and miRNA-375. Dysregulation of ncRNAs increased the risk of development of DM and MetS and its progression to CVD in obese individuals. Hence, these molecules are potential targets to arrest or delay the progression of metabolic diseases.
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Affiliation(s)
- Abdullahi Dandare
- Department of Biosciences, COMSATS University Islamabad, Islamabad 45550, Pakistan
- Department of Biochemistry, Usmanu Danfodiyo University, Sokoto 840104, Nigeria
| | - Muhammad Jawad Khan
- Department of Biosciences, COMSATS University Islamabad, Islamabad 45550, Pakistan
| | - Aisha Naeem
- Ministry of Public Health, POB42, Doha, Qatar
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Afrose Liaquat
- Shifa College of Medicine, Shifa Tameer-E-Millat University, Islamabad 45550, Pakistan
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Han S, Luo Y, Liu B, Guo T, Qin D, Luo F. Dietary flavonoids prevent diabetes through epigenetic regulation: advance and challenge. Crit Rev Food Sci Nutr 2023; 63:11925-11941. [PMID: 35816298 DOI: 10.1080/10408398.2022.2097637] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The pathophysiology of diabetes has been studied extensively in various countries, but effective prevention and treatment methods are still insufficient. In recent years, epigenetics has received increasing attention from researchers in exploring the etiology and treatment of diabetes. DNA methylation, histone modifications, and non-coding RNAs play critical roles in the occurrence, maintenance, and progression of diabetes and its complications. Therefore, preventing or reversing the epigenetic alterations that occur during the development of diabetes may reduce the individual and societal burden of the disease. Dietary flavonoids serve as natural epigenetic modulators for the discovery of biomarkers for diabetes prevention and the development of alternative therapies. However, there is limited knowledge about the potential beneficial effects of flavonoids on the epigenetics of diabetes. In this review, the multidimensional epigenetic effects of different flavonoid subtypes in diabetes were summarized. Furthermore, it was discussed that parental flavonoid diets might reduce diabetes incidence in offspring, which represent a promising opportunity to prevent diabetes in the future. Future work will depend on exploring anti-diabetic effects of different flavonoids with different epigenetic regulation mechanisms and clinical trials.Highlights• "Epigenetic therapy" could reduce the burden of diabetic patients• "Epigenetic diet" ameliorates diabetes• Targeting epigenetic regulations by dietary flavonoids in the diabetes prevention• Dietary flavonoids prevent diabetes via transgenerational epigenetic inheritance.
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Affiliation(s)
- Shuai Han
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, National Research Center of Rice Deep Processing and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Yi Luo
- Department of Clinic Medicine, Xiangya School of Medicine, Central South University, Changsha, China
| | - Bo Liu
- Central South Food Science Institute of Grain and Oil Co., Ltd., Hunan Grain Group Co., Ltd, Changsha, China
| | - Tianyi Guo
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, National Research Center of Rice Deep Processing and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Dandan Qin
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, National Research Center of Rice Deep Processing and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Feijun Luo
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, National Research Center of Rice Deep Processing and Byproducts, Central South University of Forestry and Technology, Changsha, China
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Teaney NA, Cyr NE. FoxO1 as a tissue-specific therapeutic target for type 2 diabetes. Front Endocrinol (Lausanne) 2023; 14:1286838. [PMID: 37941908 PMCID: PMC10629996 DOI: 10.3389/fendo.2023.1286838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/06/2023] [Indexed: 11/10/2023] Open
Abstract
Forkhead box O (FoxO) proteins are transcription factors that mediate many aspects of physiology and thus have been targeted as therapeutics for several diseases including metabolic disorders such as type 2 diabetes mellitus (T2D). The role of FoxO1 in metabolism has been well studied, but recently FoxO1's potential for diabetes prevention and therapy has been debated. For example, studies have shown that increased FoxO1 activity in certain tissue types contributes to T2D pathology, symptoms, and comorbidities, yet in other tissue types elevated FoxO1 has been reported to alleviate symptoms associated with diabetes. Furthermore, studies have reported opposite effects of active FoxO1 in the same tissue type. For example, in the liver, FoxO1 contributes to T2D by increasing hepatic glucose production. However, FoxO1 has been shown to either increase or decrease hepatic lipogenesis as well as adipogenesis in white adipose tissue. In skeletal muscle, FoxO1 reduces glucose uptake and oxidation, promotes lipid uptake and oxidation, and increases muscle atrophy. While many studies show that FoxO1 lowers pancreatic insulin production and secretion, others show the opposite, especially in response to oxidative stress and inflammation. Elevated FoxO1 in the hypothalamus increases the risk of developing T2D. However, increased FoxO1 may mitigate Alzheimer's disease, a neurodegenerative disease strongly associated with T2D. Conversely, accumulating evidence implicates increased FoxO1 with Parkinson's disease pathogenesis. Here we review FoxO1's actions in T2D conditions in metabolic tissues that abundantly express FoxO1 and highlight some of the current studies targeting FoxO1 for T2D treatment.
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Affiliation(s)
- Nicole A. Teaney
- Stonehill College, Neuroscience Program, Easton, MA, United States
| | - Nicole E. Cyr
- Stonehill College, Neuroscience Program, Easton, MA, United States
- Stonehill College, Department of Biology, Easton, MA, United States
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Leyderman M, Wilmore JR, Shope T, Cooney RN, Urao N. Impact of intestinal microenvironments in obesity and bariatric surgery on shaping macrophages. IMMUNOMETABOLISM (COBHAM, SURREY) 2023; 5:e00033. [PMID: 38037591 PMCID: PMC10683977 DOI: 10.1097/in9.0000000000000033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 10/26/2023] [Indexed: 12/02/2023]
Abstract
Obesity is associated with alterations in tissue composition, systemic cellular metabolism, and low-grade chronic inflammation. Macrophages are heterogenous innate immune cells ubiquitously localized throughout the body and are key components of tissue homeostasis, inflammation, wound healing, and various disease states. Macrophages are highly plastic and can switch their phenotypic polarization and change function in response to their local environments. Here, we discuss how obesity alters the intestinal microenvironment and potential key factors that can influence intestinal macrophages as well as macrophages in other organs, including adipose tissue and hematopoietic organs. As bariatric surgery can induce metabolic adaptation systemically, we discuss the potential mechanisms through which bariatric surgery reshapes macrophages in obesity.
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Affiliation(s)
- Michael Leyderman
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Joel R. Wilmore
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, NY, USA
- Sepsis Interdisciplinary Research Center, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Timothy Shope
- Department of Surgery, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Robert N. Cooney
- Sepsis Interdisciplinary Research Center, State University of New York Upstate Medical University, Syracuse, NY, USA
- Department of Surgery, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Norifumi Urao
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY, USA
- Sepsis Interdisciplinary Research Center, State University of New York Upstate Medical University, Syracuse, NY, USA
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Bourebaba L, Serwotka-Suszczak A, Bourebaba N, Zyzak M, Marycz K. The PTP1B Inhibitor Trodusquemine (MSI-1436) Improves Glucose Uptake in Equine Metabolic Syndrome Affected Liver through Anti-Inflammatory and Antifibrotic Activity. Int J Inflam 2023; 2023:3803056. [PMID: 37808009 PMCID: PMC10560121 DOI: 10.1155/2023/3803056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 08/12/2023] [Accepted: 09/08/2023] [Indexed: 10/10/2023] Open
Abstract
Background Hyperactivation of protein tyrosine phosphatase (PTP1B) has been associated with several metabolic malfunctions ranging from insulin resistance, metaflammation, lipotoxicity, and hyperglycaemia. Liver metabolism failure has been proposed as a core element in underlying endocrine disorders through persistent inflammation and highly fibrotic phenotype. Methods In this study, the outcomes of PTP1B inhibition using trodusquemine (MSI-1436) on key equine metabolic syndrome (EMS)-related alterations including inflammation, fibrosis, and glucose uptake have been analyzed in liver explants collected from EMS-affected horses using various analytical techniques, namely, flow cytometry, RT-qPCR, and Western blot. Results PTP1B inhibition using trodusquemine resulted in decreased proinflammatory cytokines (IL-1β, TNF-α, and IL-6) release from liver and PBMC affected by EMS and regulated expression of major proinflammatory microRNAs such as miR-802 and miR-211. Moreover, MSI-1436 enhanced the anti-inflammatory profile of livers by elevating the expression of IL-10 and IL-4 and activating CD4+CD25+Foxp3+ regulatory T cells in treated PBMC. Similarly, the inhibitor attenuated fibrogenic pathways in the liver by downregulating TGF-β/NOX1/4 axis and associated MMP-2/9 overactivation. Interestingly, PTP1B inhibition ameliorated the expression of TIMP-1 and Smad7, both important antifibrotic mediators. Furthermore, application of MSI-1436 was found to augment the abundance of glycosylated Glut-2, which subsequently expanded the glucose absorption in the EMS liver, probably due to an enhanced Glut-2 stability and half-life onto the plasma cell membranes. Conclusion Taken together, the presented data suggest that the PTP1B inhibition strategy and the use of its specific inhibitor MSI-1436 represents a promising option for the improvement of liver tissue integrity and homeostasis in the course of EMS and adds more insights for ongoing clinical trials for human MetS management.
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Affiliation(s)
- Lynda Bourebaba
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, Wrocław 50-375, Poland
| | - Anna Serwotka-Suszczak
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, Wrocław 50-375, Poland
| | - Nabila Bourebaba
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, Wrocław 50-375, Poland
| | - Magdalena Zyzak
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, Wrocław 50-375, Poland
| | - Krzysztof Marycz
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, Wrocław 50-375, Poland
- Department of Veterinary Medicine and Epidemiology, Veterinary Institute for Regenerative Cures, School of Veterinary Medicine, University of California, Davis, CA 95516, USA
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Sun H, Kemper JK. MicroRNA regulation of AMPK in nonalcoholic fatty liver disease. Exp Mol Med 2023; 55:1974-1981. [PMID: 37653034 PMCID: PMC10545736 DOI: 10.1038/s12276-023-01072-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/10/2023] [Accepted: 06/13/2023] [Indexed: 09/02/2023] Open
Abstract
Obesity-associated nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease and is the leading cause of liver failure and death. The function of AMP-activated protein kinase (AMPK), a master energy sensor, is aberrantly reduced in NAFLD, but the underlying mechanisms are not fully understood. Increasing evidence indicates that aberrantly expressed microRNAs (miRs) are associated with impaired AMPK function in obesity and NAFLD. In this review, we discuss the emerging evidence that miRs have a role in reducing AMPK activity in NAFLD and nonalcoholic steatohepatitis (NASH), a severe form of NAFLD. We also discuss the underlying mechanisms of the aberrant expression of miRs that can negatively impact AMPK, as well as the therapeutic potential of targeting the miR-AMPK pathway for NAFLD/NASH.
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Affiliation(s)
- Hao Sun
- Department of Molecular and Integrative Physiology, School of Molecular and Cellular Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jongsook Kim Kemper
- Department of Molecular and Integrative Physiology, School of Molecular and Cellular Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
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Cai Y, Liu P, Xu Y, Xia Y, Peng X, Zhao H, Chen Q. Biomarkers of obesity-mediated insulin resistance: focus on microRNAs. Diabetol Metab Syndr 2023; 15:167. [PMID: 37537674 PMCID: PMC10401761 DOI: 10.1186/s13098-023-01137-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/09/2023] [Indexed: 08/05/2023] Open
Abstract
Obesity and metabolic syndromes are becoming increasingly prevalent worldwide. Insulin resistance (IR) is a common complication of obesity. However, IR occurrence varies across individuals with obesity and may involve epigenetic factors. To rationalize the allocation of healthcare resources, biomarkers for the early risk stratification of individuals with obesity should be identified. MicroRNAs (miRNAs) are closely associated with metabolic diseases and involved in epigenetic regulation. In this review, we have summarized the changes in miRNA expression in the peripheral circulation and tissues of patients and animals with obesity-associated IR over the last 5 years and identified several candidate biomarkers that predict obesity-related IR. There are areas for improvement in existing studies. First, more than the predictive validity of a single biomarker is required, and a biomarker panel needs to be formed. Second, miRNAs are often studied in isolation and do not form a network of signaling pathways. We believe that early biomarkers can help clinicians accurately predict individuals prone to obesity-related IR at an early stage. Epigenetic regulation may be one of the underlying causes of different clinical outcomes in individuals with obesity. Future studies should focus on objectively reflecting the differences in miRNA profile expression in individuals with obesity-related IR, which may help identify more reliable biomarkers. Understanding the metabolic pathways of these miRNAs can help design new metabolic risk prevention and management strategies, and support the development of drugs to treat obesity and metabolic disorders.
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Affiliation(s)
- Yichen Cai
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Pan Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yumei Xu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuguo Xia
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China
| | - Xiaowan Peng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Haiyan Zhao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qiu Chen
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China.
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12
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Zhu C, Wen X, You H, Lu L, Du L, Qian C. Improved Insulin Secretion Response and Beta-cell Function Correlated with Increased Prolactin Levels After Laparoscopic Sleeve Gastrectomy in Morbidly Obese Patients with Acanthosis Nigricans. Obes Surg 2023; 33:2405-2419. [PMID: 37338797 DOI: 10.1007/s11695-023-06686-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/04/2023] [Accepted: 06/08/2023] [Indexed: 06/21/2023]
Abstract
OBJECTIVE To explore insulin secretion patterns, β-cell function, and serum prolactin (PRL) concentrations in Chinese morbidly obese patients with Acanthosis nigricans (AN) and their alterations after laparoscopic sleeve gastrectomy (LSG). METHODS A total of 138 morbidly obese subjects undergoing LSG were categorized as simple obesity without AN (OB group, n = 55) and obesity with AN (AN group, n = 83). Oral glucose tolerance test (OGTT), PRL, and related metabolic indices were performed pre- and 12 months post-LSG. Insulin secretion patterns were derived from insulin secretion peak time during OGTT: type I (peak at 30 or 60 min) and type II (peak at 120 or 180 min). RESULTS Preoperatively, AN group showed significantly higher proportions of type II insulin secretion pattern, fasting insulin (FINS), and homeostatic model assessment of insulin resistance (HOMA-IR) whereas lower oral glucose insulin sensitivity (OGIS), insulinogenic index (IGI), and disposition index (DI) than OB group, which were improved significantly at 12 months postoperatively in both groups, more pronounced in AN group. Intriguingly, serum PRL declined substantially in AN group than OB group at baseline whereas elevated only in the AN group post-LSG. After adjusting for confounding factors, elevated PRL correlated significantly with increased IGI and DI, and decreased HOMA-IR in both genders, as well as increased OGIS in females, which was detected only in the AN group CONCLUSION: Morbidly obese patients with AN presented delayed insulin secretion response, impaired insulin secretion, and β-cell dysfunction, which were significantly improved by LSG and might benefit from elevated PRL.
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Affiliation(s)
- Cuiling Zhu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Xin Wen
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Hui You
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Liesheng Lu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Lei Du
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Chunhua Qian
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 301 Middle Yanchang Road, Shanghai, 200072, China.
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13
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Dżaman K, Czerwaty K, Reichert TE, Szczepański MJ, Ludwig N. Expression and Regulatory Mechanisms of MicroRNA in Cholesteatoma: A Systematic Review. Int J Mol Sci 2023; 24:12277. [PMID: 37569652 PMCID: PMC10418341 DOI: 10.3390/ijms241512277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 07/29/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023] Open
Abstract
Cholesteatoma is a temporal bone disease characterized by dysfunctions of keratinocytes. MicroRNAs (miRNAs) are evolutionary conserved noncoding RNAs that regulate mRNA expression. They can be packaged into exosomes and transported to target cells that can be used in the future therapy of cholesteatoma. This study aimed to collect knowledge on the role of miRNAs and exosomal miRNAs in cholesteatoma and was conducted according to the PRISMA guidelines for systematic reviews. Four databases were screened: Pubmed/MEDLINE, Web of Science, Scopus, and the Cochrane Library. The last search was run on the 6th of June 2023. We included full-text original studies written in English, which examined miRNAs in cholesteatoma. The risk of bias was assessed using the Office of Health Assessment and Translation (OHAT) Risk of Bias Rating Tool, modified for the needs of this review. We identified 118 records and included 18 articles. Analyses revealed the downregulation of exosomal miR-17 as well as miR-10a-5p, miR-125b, miR-142-5p, miR34a, miR-203a, and miR-152-5p and the overexpression of exosomal miR-106b-5p as well as miR-1297, miR-26a-5p, miR-199a, miR-508-3p, miR-21-3p, miR-584-5p, and miR-16-1-3p in cholesteatoma. The role of differentially expressed miRNAs in cholesteatoma, including cell proliferation, apoptosis, the cell cycle, differentiation, bone resorption, and the remodeling process, was confirmed, making them a potential therapeutic target in this disease.
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Affiliation(s)
- Karolina Dżaman
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
| | - Katarzyna Czerwaty
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
| | - Torsten E. Reichert
- Department of Oral and Maxillofacial Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (T.E.R.); (N.L.)
| | - Mirosław J. Szczepański
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
- Department of Biochemistry, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Nils Ludwig
- Department of Oral and Maxillofacial Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (T.E.R.); (N.L.)
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14
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Deng X, Niu L, Xiao J, Guo Q, Liang J, Tang J, Liu X, Xiao C. Involvement of intestinal flora and miRNA into the mechanism of coarse grains improving type 2 diabetes: an overview. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:4257-4267. [PMID: 36224106 DOI: 10.1002/jsfa.12270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 10/09/2022] [Accepted: 10/12/2022] [Indexed: 06/06/2023]
Abstract
The prevalence of type 2 diabetes has been growing at an increasing rate worldwide. Dietary therapy is probably the easiest and least expensive method to prevent and treat diabetes. Previous studies have reported that coarse grains have anti-diabetic effects. Although considerable efforts have been made on the anti-diabetic function of different grains, the mechanisms of coarse grains on type 2 diabetes have not been systematically compared and summarized so far. Intestinal flora, reported as the main 'organ' of action underlying coarse grains, is an important factor in the alleviation of type 2 diabetes by coarse grains. Furthermore, microRNA (miRNA), as a new disease marker and 'dark nutrient', plays a likely influential role in cross-border communication among coarse grains, intestinal flora, and hosts. Given this context, this article reviews several possible mechanisms for the role of coarse grains on diabetes, incorporating resistance to inflammation and oxidative stress, repair of insulin signaling and β-cell dysfunction, and highlights the regulation of intestinal flora disorders and miRNAs expression, along with some novel insights. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xu Deng
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Li Niu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Jing Xiao
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Qianqian Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Jiayi Liang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Jiayu Tang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Chunxia Xiao
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
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15
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Goncalves BDS, Meadows A, Pereira DG, Puri R, Pillai SS. Insight into the Inter-Organ Crosstalk and Prognostic Role of Liver-Derived MicroRNAs in Metabolic Disease Progression. Biomedicines 2023; 11:1597. [PMID: 37371692 DOI: 10.3390/biomedicines11061597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/19/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
Dysfunctional hepatic metabolism has been linked to numerous diseases, including non-alcoholic fatty liver disease, the most common chronic liver disorder worldwide, which can progress to hepatic fibrosis, and is closely associated with insulin resistance and cardiovascular diseases. In addition, the liver secretes a wide array of metabolites, biomolecules, and microRNAs (miRNAs) and many of these secreted factors exert significant effects on metabolic processes both in the liver and in peripheral tissues. In this review, we summarize the involvement of liver-derived miRNAs in biological processes with an emphasis on delineating the communication between the liver and other tissues associated with metabolic disease progression. Furthermore, the review identifies the primary molecular targets by which miRNAs act. These consolidated findings from numerous studies provide insight into the underlying mechanism of various metabolic disease progression and suggest the possibility of using circulatory miRNAs as prognostic predictors and therapeutic targets for improving clinical intervention strategies.
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Affiliation(s)
- Bruno de Souza Goncalves
- Department of Surgery and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25701, USA
| | - Avery Meadows
- Department of Surgery and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25701, USA
| | - Duane G Pereira
- Department of Surgery and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25701, USA
| | - Raghav Puri
- Department of Surgery and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25701, USA
| | - Sneha S Pillai
- Department of Surgery and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25701, USA
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16
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Wu SY, Wu HT, Wang YC, Chang CJ, Shan YS, Wu SR, Chiu YC, Hsu CL, Juan HF, Lan KY, Chu CW, Lee YR, Lan SH, Liu HS. Secretory autophagy promotes RAB37-mediated insulin secretion under glucose stimulation both in vitro and in vivo. Autophagy 2023; 19:1239-1257. [PMID: 36109708 PMCID: PMC10012902 DOI: 10.1080/15548627.2022.2123098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
High blood glucose is one of the risk factors for metabolic disease and INS (insulin) is the key regulatory hormone for glucose homeostasis. Hypoinsulinemia accompanied with hyperglycemia was diagnosed in mice with pancreatic β-cells exhibiting autophagy deficiency; however, the underlying mechanism remains elusive. The role of secretory autophagy in the regulation of metabolic syndrome is gaining more attention. Our data demonstrated that increased macroautophagic/autophagic activity leads to induction of insulin secretion in β-cells both in vivo and in vitro under high-glucose conditions. Moreover, proteomic analysis of purified autophagosomes from β-cells identified a group of vesicular transport proteins participating in insulin secretion, implying that secretory autophagy regulates insulin exocytosis. RAB37, a small GTPase, regulates vesicle biogenesis, trafficking, and cargo release. We demonstrated that the active form of RAB37 increased MAP1LC3/LC3 lipidation (LC3-II) and is essential for the promotion of insulin secretion by autophagy, but these phenomena were not observed in rab37 knockout (rab37-/-) cells and mice. Unbalanced insulin and glucose concentration in the blood was improved by manipulating autophagic activity using a novel autophagy inducer niclosamide (an antihelminthic drug) in a high-fat diet (HFD)-obesity mouse model. In summary, we reveal that secretory autophagy promotes RAB37-mediated insulin secretion to maintain the homeostasis of insulin and glucose both in vitro and in vivo.
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Affiliation(s)
- Shan-Ying Wu
- Department of Microbiology and Immunology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hung-Tsung Wu
- Department of Internal Medicine, School of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Ching Wang
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Jen Chang
- Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yan-Shen Shan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shang-Rung Wu
- Institute of Oral Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yen-Chi Chiu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Lang Hsu
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan
| | - Hsueh-Fen Juan
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan
| | - Kai-Ying Lan
- Department of Microbiology and Immunology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chi-Wen Chu
- Department of Life Sciences and Institute of Genome Sciences, National Yang Ming Chiao Tung University
| | - Ying-Ray Lee
- Department of Microbiology and Immunology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Sheng-Hui Lan
- Department of Life Sciences and Institute of Genome Sciences, National Yang Ming Chiao Tung University.,Cancer Progression Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hsiao-Sheng Liu
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Center for Cancer Research, Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,M.Sc. Program in Tropical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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17
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Taylor HJ, Hung YH, Narisu N, Erdos MR, Kanke M, Yan T, Grenko CM, Swift AJ, Bonnycastle LL, Sethupathy P, Collins FS, Taylor DL. Human pancreatic islet microRNAs implicated in diabetes and related traits by large-scale genetic analysis. Proc Natl Acad Sci U S A 2023; 120:e2206797120. [PMID: 36757889 PMCID: PMC9963967 DOI: 10.1073/pnas.2206797120] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 01/11/2023] [Indexed: 02/10/2023] Open
Abstract
Genetic studies have identified ≥240 loci associated with the risk of type 2 diabetes (T2D), yet most of these loci lie in non-coding regions, masking the underlying molecular mechanisms. Recent studies investigating mRNA expression in human pancreatic islets have yielded important insights into the molecular drivers of normal islet function and T2D pathophysiology. However, similar studies investigating microRNA (miRNA) expression remain limited. Here, we present data from 63 individuals, the largest sequencing-based analysis of miRNA expression in human islets to date. We characterized the genetic regulation of miRNA expression by decomposing the expression of highly heritable miRNAs into cis- and trans-acting genetic components and mapping cis-acting loci associated with miRNA expression [miRNA-expression quantitative trait loci (eQTLs)]. We found i) 84 heritable miRNAs, primarily regulated by trans-acting genetic effects, and ii) 5 miRNA-eQTLs. We also used several different strategies to identify T2D-associated miRNAs. First, we colocalized miRNA-eQTLs with genetic loci associated with T2D and multiple glycemic traits, identifying one miRNA, miR-1908, that shares genetic signals for blood glucose and glycated hemoglobin (HbA1c). Next, we intersected miRNA seed regions and predicted target sites with credible set SNPs associated with T2D and glycemic traits and found 32 miRNAs that may have altered binding and function due to disrupted seed regions. Finally, we performed differential expression analysis and identified 14 miRNAs associated with T2D status-including miR-187-3p, miR-21-5p, miR-668, and miR-199b-5p-and 4 miRNAs associated with a polygenic score for HbA1c levels-miR-216a, miR-25, miR-30a-3p, and miR-30a-5p.
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Affiliation(s)
- Henry J. Taylor
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
- British Heart Foundation Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, CambridgeCB2 0BB, UK
- Heart and Lung Research Institute, University of Cambridge, CambridgeCB2 0BB, UK
| | - Yu-Han Hung
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY14853
| | - Narisu Narisu
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
| | - Michael R. Erdos
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
| | - Matthew Kanke
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY14853
| | - Tingfen Yan
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
| | - Caleb M. Grenko
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
| | - Amy J. Swift
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
| | - Lori L. Bonnycastle
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
| | - Praveen Sethupathy
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY14853
| | - Francis S. Collins
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
| | - D. Leland Taylor
- Center for Precision Health Research, National Human Genome Research Institute, NIH, Bethesda, MD20892
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18
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Liu Y, Yang Y, Xu C, Liu J, Chen J, Li G, Huang B, Pan Y, Zhang Y, Wei Q, Pandol SJ, Zhang F, Li L, Jin L. Circular RNA circGlis3 protects against islet β-cell dysfunction and apoptosis in obesity. Nat Commun 2023; 14:351. [PMID: 36681689 PMCID: PMC9867769 DOI: 10.1038/s41467-023-35998-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 01/12/2023] [Indexed: 01/22/2023] Open
Abstract
Pancreatic β-cell compensation is a major mechanism in delaying T2DM progression. Here we report the abnormal high expression of circGlis3 in islets of male mice with obesity and serum of people with obesity. Increasing circGlis3 is regulated by Quaking (QKI)-mediated splicing circularization. circGlis3 overexpression enhances insulin secretion and inhibits obesity-induced apoptosis in vitro and in vivo. Mechanistically, circGlis3 promotes insulin secretion by up-regulating NeuroD1 and Creb1 via sponging miR-124-3p and decreases apoptosis via interacting with the pro-apoptotic factor SCOTIN. The RNA binding protein FUS recruits circGlis3 and collectively assemble abnormal stable cytoplasmic stress granules (SG) in response to cellular stress. These findings highlight a physiological role for circRNAs in β-cell compensation and indicate that modulation of circGlis3 expression may represent a potential strategy to prevent β-cell dysfunction and apoptosis after obesity.
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Affiliation(s)
- Yue Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China
| | - Yue Yang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China
| | - Chenying Xu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China
| | - Jianxing Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China
| | - Jiale Chen
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China
| | - Guoqing Li
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, No. 87 Dingjiaqiao, Nanjing, Jiangsu, 210009, China
| | - Bin Huang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China
| | - Yi Pan
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China
| | - Yanfeng Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China
| | - Qiong Wei
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, No. 87 Dingjiaqiao, Nanjing, Jiangsu, 210009, China
| | - Stephen J Pandol
- Departments of Medicine and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Fangfang Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China.
| | - Ling Li
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, No. 87 Dingjiaqiao, Nanjing, Jiangsu, 210009, China.
| | - Liang Jin
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of life Science and Technology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, Jiangsu province, P. R. China.
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19
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Xu W, Li J, Ji C, Fang D, Yao L, Xu N, Yi W. Activation of POMC neurons to adiponectin participating in EA-mediated improvement of high-fat diet IR mice. Front Neurosci 2023; 17:1145079. [PMID: 37034166 PMCID: PMC10077892 DOI: 10.3389/fnins.2023.1145079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 02/27/2023] [Indexed: 04/11/2023] Open
Abstract
Background Insulin resistance (IR) is one of the common pathological manifestations of metabolic-related diseases, and the prevalence of relevant diseases is high. Acupuncture is beneficial to IR patients, but the central mechanism underlying this treatment remains unclear. This study provides mechanistic insights into how electroacupuncture (EA) improves IR through the response of Pro-opiomelanocortin (POMC) neurons to adiponectin (Adipo). Methods Glucose tolerance tests (GTT), Insulin tolerance tests (ITT) and fasting blood glucose (FBG) were detected by glucometer. Serum insulin, Adipo and skeletal muscle adiponectin receptor 1 (AdipoR1) protein levels were examined by ELISA. Homeostasis model assessment estimated insulin resistance (HOMA-IR) was calculated using the following formula: HOMA-IR = fasting insulin (FINS) (mU/L) × FBG (mmol/L)/22.5. The expression levels of AdipoR1 and Adipo mRNA in skeletal muscle were detected by real-time PCR quantification. The co-marking of c-Fos/AdipoR1 and POMC neurons were investigated using immunofluorescence. Spontaneous excitatory postsynaptic currents (sEPSCs) of POMC neurons and the response of POMC neurons to Adipo were detected via electrophysiology. Results EA significantly ameliorated HFD-induced impairment of GTT, ITT, FBG, and HOMA-IR which was correlated with recovery of the expression level of AdipoR1 and Adipo in skeletal muscle. The improved response of POMC neurons to Adipo in the hypothalamus may be a key factor in correcting abnormal glucose tolerance and improving IR. Conclusion This study demonstrates that EA can ameliorate HFD-induced impaired glucose tolerance through improved response of POMC neurons to Adipo in the hypothalamus, providing insight into the central mechanism of improving IR through EA.
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Affiliation(s)
- Wanling Xu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Junfeng Li
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chang Ji
- The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Danwei Fang
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lulu Yao
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Nenggui Xu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wei Yi
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
- *Correspondence: Wei Yi,
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20
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Abdollahi M, Kato M, Lanting L, Tunduguru R, Wang M, Wang Y, Fueger PT, Wang Q, Huang W, Natarajan R. miR-379 mediates insulin resistance and obesity through impaired angiogenesis and adipogenesis regulated by ER stress. MOLECULAR THERAPY. NUCLEIC ACIDS 2022; 30:115-130. [PMID: 36250205 PMCID: PMC9535382 DOI: 10.1016/j.omtn.2022.09.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 09/15/2022] [Indexed: 01/29/2023]
Abstract
We investigated the role of microRNA (miR-379) in the pathogenesis of obesity, adipose tissue dysfunction, and insulin resistance (IR). We used miR-379 knockout (miR-379KO) mice to test whether loss of miR-379 affects high-fat diet (HFD)-induced obesity and IR via dysregulation of key miR-379 targets in adipose tissue. Increases in body weight, hyperinsulinemia, and IR in wild-type (WT)-HFD mice were significantly attenuated in miR-379KO-HFD mice with some sex differences. Relative to control chow-fed mice, in WT-HFD mice, expression of miR-379 and C/EBP homologous protein (Chop) (pro-endoplasmic reticulum [ER] stress) and inflammation in perigonadal white adipose tissue (gWAT) were increased, whereas adipogenic genes and miR-379 target genes (Vegfb and Edem3) were decreased. These changes, as well as key parameters of brown adipose tissue dysfunction (including mitochondrial defects), were significantly attenuated in miR-379KO-HFD mice. WAT from obese human subjects with and without type 2 diabetes showed increased miR-379 and decreased miR-379 target genes. In cultured 3T3L1 pre-adipocytes, miR-379 inhibitors increased miR-379 targets and adipogenic genes. These data suggest that miR-379 plays an important role in HFD-induced obesity through increased adipose inflammation, mitochondrial dysfunction, and ER stress as well as impaired adipogenesis and angiogenesis. miR-379 inhibitors may be developed as novel therapies for obesity and associated complications.
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Affiliation(s)
- Maryam Abdollahi
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Corresponding author Maryam Abdollahi, Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA.
| | - Mitsuo Kato
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Linda Lanting
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Ragadeepthi Tunduguru
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Mei Wang
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Yangmeng Wang
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Patrick T. Fueger
- Department of Molecular and Cellular Endocrinology, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Comprehensive Metabolic Phenotyping Core, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Qiong Wang
- Department of Molecular and Cellular Endocrinology, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Wendong Huang
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Rama Natarajan
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Corresponding author Rama Natarajan, Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA.
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21
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Dhaher NF, Shaat N, Nilsson A, Bennet L. Insulin secretion and action with increasing age - A comparison between Middle Eastern immigrants and native Swedes. Heliyon 2022; 8:e10913. [PMID: 36247141 PMCID: PMC9563179 DOI: 10.1016/j.heliyon.2022.e10913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/28/2022] [Accepted: 09/28/2022] [Indexed: 11/06/2022] Open
Abstract
Aims Little is known how insulin secretion and action change over time in populations of different ethnicities. We studied changes in insulin secretion and action with increasing age in Iraqi-born immigrants and native Swedes, and investigated if the changes were modified by region of origin. Methods Residents of Malmö, 30–75 years of age born in Iraq or Sweden, were invited to participate in this population-based, cross-sectional study. Health examination, medical history, lifestyle, sociodemographic data, and fasting blood samples were assessed. Oral glucose tolerance tests were performed and insulin secretion (disposition index, DIo) and insulin sensitivity index (ISI) calculated using the Matsuda indices. Results In total 1881 people participated; 1193 Iraqi- and 688 Swedish born. DIo decreased with increasing age in the total study population (β for the effect of age on ln DIo: -0.018, 95% CI -0.023 to -0.013, P < 0.001), adjusted for origin, lifestyle and anthropometric measures. DIo was generally lower in Iraqis vs. Swedes (median: 12,712.9 vs. 14,659.2, P = 0.004), but the difference disappeared when adjusted for BMI. Further, ISI declined with increasing age in both Iraqis and Swedes. ISI was generally lower among Iraqis compared to Swedes, (median: 76.9 vs. 102.3, p < .001). The difference could not be fully explained by age, sex, lifestyle, and anthropometric measures. No significant interactions were observed. Conclusions The levels of DIo and ISI were lower among Iraqis compared to Swedes and declined with increasing age, irrespective of origin.
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Affiliation(s)
- Nadine Fadhel Dhaher
- Department of Medicine, Trelleborg's Hospital, Trelleborg, Sweden,Genomics, Diabetes and Endocrinology, Department of Clinical Sciences, Lund University, Malmö, Sweden,Department of Endocrinology, Skåne University Hospital, Malmö, Sweden,Corresponding author.
| | - Nael Shaat
- Genomics, Diabetes and Endocrinology, Department of Clinical Sciences, Lund University, Malmö, Sweden,Department of Endocrinology, Skåne University Hospital, Malmö, Sweden
| | - Anton Nilsson
- Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Louise Bennet
- Department of Clinical Sciences in Malmö, Lund University, Malmö, Sweden,Clinical Research and Trial Centre, Lund University Hospital, Lund, Sweden
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22
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Fang X, Miao R, Wei J, Wu H, Tian J. Advances in multi-omics study of biomarkers of glycolipid metabolism disorder. Comput Struct Biotechnol J 2022; 20:5935-5951. [PMID: 36382190 PMCID: PMC9646750 DOI: 10.1016/j.csbj.2022.10.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 10/16/2022] [Accepted: 10/20/2022] [Indexed: 11/30/2022] Open
Abstract
Glycolipid metabolism disorder are major threats to human health and life. Genetic, environmental, psychological, cellular, and molecular factors contribute to their pathogenesis. Several studies demonstrated that neuroendocrine axis dysfunction, insulin resistance, oxidative stress, chronic inflammatory response, and gut microbiota dysbiosis are core pathological links associated with it. However, the underlying molecular mechanisms and therapeutic targets of glycolipid metabolism disorder remain to be elucidated. Progress in high-throughput technologies has helped clarify the pathophysiology of glycolipid metabolism disorder. In the present review, we explored the ways and means by which genomics, transcriptomics, proteomics, metabolomics, and gut microbiomics could help identify novel candidate biomarkers for the clinical management of glycolipid metabolism disorder. We also discuss the limitations and recommended future research directions of multi-omics studies on these diseases.
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23
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Lee YG, Woo H, Choi C, Ryoo GH, Chung YJ, Lee JH, Jung SJ, Chae SW, Bae EJ, Park BH. Supplementation with Vitis vinifera Jingzaojing Leaf and Shoot Extract Improves Exercise Endurance in Mice. Nutrients 2022; 14:nu14194033. [PMID: 36235689 PMCID: PMC9573418 DOI: 10.3390/nu14194033] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022] Open
Abstract
Switching myofibers from the fast-glycolytic type to the slow-oxidative type is associated with an alleviation of the symptoms associated with various cardiometabolic diseases. This study investigates the effect of Vitis vinifera Jingzaojing leaf and shoot extract (JLSE), which is rich in phenolic compounds, on the regulation of skeletal muscle fiber-type switching, as well as the associated underlying mechanism. Male C57BL/6N mice were supplemented orally with vehicle or JLSE (300 mg/kg) and subjected to treadmill exercise training. After four weeks, mice in the JLSE-supplemented group showed significantly improved exercise endurance and mitochondrial oxidative capacity. JLSE supplementation increased the expression of sirtuin 6 and decreased Sox6 expression, thereby elevating the number of mitochondria and encouraging fast-to-slow myofiber switching. The results of our experiments suggest that JLSE supplementation reprograms myofiber composition to favor the slow oxidative type, ultimately enhancing exercise endurance.
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Affiliation(s)
- Yong Gyun Lee
- School of Pharmacy, Jeonbuk National University, Jeonju 54896, Jeonbuk, Korea
| | - Hayoung Woo
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Chul Choi
- Department of Neurosurgery, Jeonbuk National University Medical School, Jeonju 54896, Jeonbuk, Korea
| | - Ga-Hee Ryoo
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Jeonbuk, Korea
| | - Yun-Jo Chung
- Biomedical Research Institute, Jeonbuk National University, Jeonju 54907, Jeonbuk, Korea
| | - Ju-Hyung Lee
- Department of Preventive Medicine, Jeonbuk National University Medical School, Jeonju 54896, Jeonbuk, Korea
| | - Su-Jin Jung
- Clinical Trial Center for Functional Foods, Jeonbuk National University Hospital, Jeonju 54907, Jeonbuk, Korea
| | - Soo-Wan Chae
- Clinical Trial Center for Functional Foods, Jeonbuk National University Hospital, Jeonju 54907, Jeonbuk, Korea
| | - Eun Ju Bae
- School of Pharmacy, Jeonbuk National University, Jeonju 54896, Jeonbuk, Korea
- Correspondence: (E.J.B.); (B.-H.P.)
| | - Byung-Hyun Park
- Department of Biochemistry and Research Institute for Endocrine Sciences, Jeonbuk National University Medical School, Jeonju 54896, Jeonbuk, Korea
- Correspondence: (E.J.B.); (B.-H.P.)
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24
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Sun H, Seok S, Jung H, Kemper B, Kemper JK. Obesity-induced miR-802 directly targets AMPK and promotes nonalcoholic steatohepatitis in mice. Mol Metab 2022; 66:101603. [PMID: 36126896 PMCID: PMC9515436 DOI: 10.1016/j.molmet.2022.101603] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 09/13/2022] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE Obesity-associated nonalcoholic fatty liver disease (NAFLD) is a leading cause of liver failure and death. However, the pathogenesis of NAFLD and its severe form, nonalcoholic steatohepatitis (NASH), is poorly understood. The energy sensor, AMP-activated protein kinase (AMPK), has decreased activity in obesity and NAFLD, but the mechanisms are unclear. Here, we examined whether obesity-induced miR-802 has a role in promoting NASH by targeting AMPK. We also investigated whether miR-802 and AMPK have roles in modulating beneficial therapeutic effects mediated by obeticholic acid (OCA), a promising clinical agent for NASH. METHODS Immunoblotting, luciferase assays, and RNA-protein interaction studies were performed to test whether miR-802 directly targets AMPK. The roles of miR-802 and AMPK in NASH were examined in mice fed a NASH-promoting diet. RESULTS Hepatic miR-802 and AMPK levels were inversely correlated in both NAFLD patients and obese mice. MicroRNA in silico analysis, together with biochemical studies in hepatic cells, suggested that miR-802 inhibits hepatic expression of AMPK by binding to the 3' untranslated regions of both human AMPKα1 and mouse Ampkβ1. In diet-induced NASH mice, OCA treatment reduced hepatic miR-802 levels and improved AMPK activity, ameliorating steatosis, inflammation, and apoptosis, but these OCA-mediated beneficial effects on NASH pathologies, particularly reducing apoptosis, were reversed by overexpression of miR-802 or downregulation of AMPK. CONCLUSIONS These results indicate that miR-802 inhibits AMPK by directly targeting Ampkβ1, promoting NAFLD/NASH in mice. The miR-802-AMPK axis that modulates OCA-mediated beneficial effects on NASH may represent a new therapeutic target.
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Affiliation(s)
| | | | | | | | - Jongsook Kim Kemper
- Corresponding author. Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, 407 S. Goodwin Avenue, Urbana, IL, 61801, USA
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25
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Chen MY, Meng XF, Han YP, Yan JL, Xiao C, Qian LB. Profile of crosstalk between glucose and lipid metabolic disturbance and diabetic cardiomyopathy: Inflammation and oxidative stress. Front Endocrinol (Lausanne) 2022; 13:983713. [PMID: 36187088 PMCID: PMC9521548 DOI: 10.3389/fendo.2022.983713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/16/2022] [Indexed: 11/13/2022] Open
Abstract
In recent years, the risk, such as hypertension, obesity and diabetes mellitus, of cardiovascular diseases has been increasing explosively with the development of living conditions and the expansion of social psychological pressure. The disturbance of glucose and lipid metabolism contributes to both collapse of myocardial structure and cardiac dysfunction, which ultimately leads to diabetic cardiomyopathy. The pathogenesis of diabetic cardiomyopathy is multifactorial, including inflammatory cascade activation, oxidative/nitrative stress, and the following impaired Ca2+ handling induced by insulin resistance/hyperinsulinemia, hyperglycemia, hyperlipidemia in diabetes. Some key alterations of cellular signaling network, such as translocation of CD36 to sarcolemma, activation of NLRP3 inflammasome, up-regulation of AGE/RAGE system, and disequilibrium of micro-RNA, mediate diabetic oxidative stress/inflammation related myocardial remodeling and ventricular dysfunction in the context of glucose and lipid metabolic disturbance. Here, we summarized the detailed oxidative stress/inflammation network by which the abnormality of glucose and lipid metabolism facilitates diabetic cardiomyopathy.
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Affiliation(s)
| | | | | | | | - Chi Xiao
- School of Basic Medical Sciences & Forensic Medicine, Hangzhou Medical College, Hangzhou, China
| | - Ling-Bo Qian
- School of Basic Medical Sciences & Forensic Medicine, Hangzhou Medical College, Hangzhou, China
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26
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Lv L, Wang X, Shen J, Cao Y, Zhang Q. MiR-574-3p inhibits glucose toxicity-induced pancreatic β-cell dysfunction by suppressing PRMT1. Diabetol Metab Syndr 2022; 14:99. [PMID: 35841066 PMCID: PMC9284709 DOI: 10.1186/s13098-022-00869-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 06/29/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Pancreatic β-cell dysfunction is commonly observed in patients with type 2 diabetes mellitus. Protein arginine methyltransferase 1 (PRMT1) plays an important role in pancreatic β-cell dysfunction. However, the detailed mechanisms remain largely unknown. METHODS RT-qPCR, western blotting, and immunofluorescence assays were used to evaluate PRMT1 and miR-574-3p levels. Cell Counting Kit-8, Advanced Dlycation End products (AGEs), Reactive Oxygen Species (ROS), and glucose-stimulated insulin secretion were assayed, and flow cytometry and RT-qPCR were performed to detect the role of PRMT1 and miR-574-3p in MIN6 cells. Luciferase reporter assays were performed to determine the interactions between PRMT1 and miR-574-3p. RESULTS High-glucose treatment resulted in the high expression of PRMT1. PRMT1 silencing could alleviate the reduced proliferation, insulin secretion, and GLUT1 level, in addition to suppressing the induced apoptosis, and AGEs and ROS levels, under high glucose conditions. MiR-574-3p was established as an upstream regulator of PRMT1 using luciferase reporter assays. More importantly, miR-574-3p reversed the effect of PRMT1 silencing in MIN6 cells. CONCLUSIONS miR-574-3p suppresses glucose toxicity-induced pancreatic β-cell dysfunction by targeting PRMT1.
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Affiliation(s)
- Lixia Lv
- Department of Endocrinology and Metabolism, Chengdu First People's Hospital, HI-TECH Zone, 18 Wanxiang North Road, Chengdu, 610041, Sichuan, China.
| | - Xiumin Wang
- Department of Proctology, Chengdu First People's Hospital, Chengdu, 610041, Sichuan, China
| | - Jinhua Shen
- Department of Endocrinology and Metabolism, Chengdu First People's Hospital, HI-TECH Zone, 18 Wanxiang North Road, Chengdu, 610041, Sichuan, China
| | - Ying Cao
- Department of Endocrinology and Metabolism, Chengdu First People's Hospital, HI-TECH Zone, 18 Wanxiang North Road, Chengdu, 610041, Sichuan, China
| | - Qin Zhang
- Department of Endocrinology and Metabolism, Chengdu First People's Hospital, HI-TECH Zone, 18 Wanxiang North Road, Chengdu, 610041, Sichuan, China.
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27
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Heris HV, Zahraei Z. miRNAs: Regulators of immune system in diabetes. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2022; 790:108442. [PMID: 36089265 DOI: 10.1016/j.mrrev.2022.108442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 08/30/2022] [Accepted: 09/06/2022] [Indexed: 01/01/2023]
Abstract
Diabetes, one of the most common multifactorial metabolic disorders, is a jeopardizing cause of human health worldwide. MicroRNAs (miRNAs) are a group of small non-coding RNAs that have been contributed to the regulation of gene expression through post-transcriptional mechanisms. The potential role of miRNAs has been studied in the most of biological processes and mechanisms underlying the progression of variety diseases including diabetes. In this review, we focus on the role of miRNAs in regulating pivotal molecular and cellular mechanisms associated with immune system that progress diabetic disorders.
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Affiliation(s)
- Helaleh Vaezi Heris
- Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran
| | - Zohreh Zahraei
- Department of Cell and Molecular Biology, Faculty of Chemistry, University of Kashan, Iran.
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28
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Carro Vázquez D, Emini L, Rauner M, Hofbauer C, Grillari J, Diendorfer AB, Eastell R, Hofbauer LC, Hackl M. Effect of Anti-Osteoporotic Treatments on Circulating and Bone MicroRNA Patterns in Osteopenic ZDF Rats. Int J Mol Sci 2022; 23:6534. [PMID: 35742976 PMCID: PMC9224326 DOI: 10.3390/ijms23126534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 02/05/2023] Open
Abstract
Bone fragility is an adverse outcome of type 2 diabetes mellitus (T2DM). The underlying molecular mechanisms have, however, remained largely unknown. MicroRNAs (miRNAs) are short non-coding RNAs that control gene expression in health and disease states. The aim of this study was to investigate the genome-wide regulation of miRNAs in T2DM bone disease by analyzing serum and bone tissue samples from a well-established rat model of T2DM, the Zucker Diabetic Fatty (ZDF) model. We performed small RNA-sequencing analysis to detect dysregulated miRNAs in the serum and ulna bone of the ZDF model under placebo and also under anti-sclerostin, PTH, and insulin treatments. The dysregulated circulating miRNAs were investigated for their cell-type enrichment to identify putative donor cells and were used to construct gene target networks. Our results show that unique sets of miRNAs are dysregulated in the serum (n = 12, FDR < 0.2) and bone tissue (n = 34, FDR < 0.2) of ZDF rats. Insulin treatment was found to induce a strong dysregulation of circulating miRNAs which are mainly involved in metabolism, thereby restoring seven circulating miRNAs in the ZDF model to normal levels. The effects of anti-sclerostin treatment on serum miRNA levels were weaker, but affected miRNAs were shown to be enriched in bone tissue. PTH treatment did not produce any effect on circulating or bone miRNAs in the ZDF rats. Altogether, this study provides the first comprehensive insights into the dysregulation of bone and serum miRNAs in the context of T2DM and the effect of insulin, PTH, and anti-sclerostin treatments on circulating miRNAs.
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Affiliation(s)
- David Carro Vázquez
- TAmiRNA GmbH, Department of Research, Leberstrasse 20, 1110 Vienna, Austria; (D.C.V.); (A.B.D.)
| | - Lejla Emini
- Center for Healthy Aging and Department of Medicine III, Technische Universität Dresden, 01069 Dresden, Germany; (L.E.); (M.R.); (C.H.); (L.C.H.)
| | - Martina Rauner
- Center for Healthy Aging and Department of Medicine III, Technische Universität Dresden, 01069 Dresden, Germany; (L.E.); (M.R.); (C.H.); (L.C.H.)
| | - Christine Hofbauer
- Center for Healthy Aging and Department of Medicine III, Technische Universität Dresden, 01069 Dresden, Germany; (L.E.); (M.R.); (C.H.); (L.C.H.)
| | - Johannes Grillari
- Ludwig Boltzmann Institute for Traumatology in Cooperation with AUVA, Ludwig Boltzmann Society, 1200 Vienna, Austria;
- Institute of Molecular Biotechnology, University of Natural Resources and Life Sciences, 1180 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Andreas B. Diendorfer
- TAmiRNA GmbH, Department of Research, Leberstrasse 20, 1110 Vienna, Austria; (D.C.V.); (A.B.D.)
| | - Richard Eastell
- Academic Unit of Bone Metabolism and Mellanby Centre for Bone Research, University of Sheffield, Sheffield S10 2RX, UK;
| | - Lorenz C. Hofbauer
- Center for Healthy Aging and Department of Medicine III, Technische Universität Dresden, 01069 Dresden, Germany; (L.E.); (M.R.); (C.H.); (L.C.H.)
| | - Matthias Hackl
- TAmiRNA GmbH, Department of Research, Leberstrasse 20, 1110 Vienna, Austria; (D.C.V.); (A.B.D.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
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29
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Du W, Liu G, Shi N, Tang D, Ferdek PE, Jakubowska MA, Liu S, Zhu X, Zhang J, Yao L, Sang X, Zou S, Liu T, Mukherjee R, Criddle DN, Zheng X, Xia Q, Berggren PO, Huang W, Sutton R, Tian Y, Huang W, Fu X. A microRNA checkpoint for Ca 2+ signaling and overload in acute pancreatitis. Mol Ther 2022; 30:1754-1774. [PMID: 35077860 PMCID: PMC9077382 DOI: 10.1016/j.ymthe.2022.01.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 12/16/2021] [Accepted: 01/20/2022] [Indexed: 02/05/2023] Open
Abstract
Acute pancreatitis (AP) is a common digestive disease without specific treatment, and its pathogenesis features multiple deleterious amplification loops dependent on translation, triggered by cytosolic Ca2+ ([Ca2+]i) overload; however, the underlying mechanisms in Ca2+ overload of AP remains incompletely understood. Here we show that microRNA-26a (miR-26a) inhibits pancreatic acinar cell (PAC) store-operated Ca2+ entry (SOCE) channel expression, Ca2+ overload, and AP. We find that major SOCE channels are post-transcriptionally induced in PACs during AP, whereas miR-26a expression is reduced in experimental and human AP and correlated with AP severity. Mechanistically, miR-26a simultaneously targets Trpc3 and Trpc6 SOCE channels and attenuates physiological oscillations and pathological elevations of [Ca2+]i in PACs. MiR-26a deficiency increases SOCE channel expression and [Ca2+]i overload, and significantly exacerbates AP. Conversely, global or PAC-specific overexpression of miR-26a in mice ameliorates pancreatic edema, neutrophil infiltration, acinar necrosis, and systemic inflammation, accompanied with remarkable improvements on pathological determinants related with [Ca2+]i overload. Moreover, pancreatic or systemic administration of an miR-26a mimic to mice significantly alleviates experimental AP. These findings reveal a previously unknown mechanism underlying AP pathogenesis, establish a critical role for miR-26a in Ca2+ signaling in the exocrine pancreas, and identify a potential target for the treatment of AP.
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Affiliation(s)
- Wenya Du
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China
| | - Geng Liu
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China
| | - Na Shi
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China; Institutes for Systems Genetics & Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Dongmei Tang
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China
| | - Pawel E Ferdek
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | - Monika A Jakubowska
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | - Shiyu Liu
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Xinyue Zhu
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China
| | - Jiayu Zhang
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China
| | - Linbo Yao
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Xiongbo Sang
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China
| | - Sailan Zou
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China
| | - Tingting Liu
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Rajarshi Mukherjee
- Liverpool Pancreatitis Research Group, Liverpool University Hospitals NHS Foundation Trust and Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Ashton Street, Liverpool L69 3GE, UK
| | - David N Criddle
- Department of Molecular Physiology and Cell Signaling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GE, UK
| | - Xiaofeng Zheng
- Center for Diabetes and Metabolism Research, Division of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Qing Xia
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Per-Olof Berggren
- Center for Diabetes and Metabolism Research, Division of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China; The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Wendong Huang
- Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Robert Sutton
- Liverpool Pancreatitis Research Group, Liverpool University Hospitals NHS Foundation Trust and Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Ashton Street, Liverpool L69 3GE, UK.
| | - Yan Tian
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China.
| | - Wei Huang
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China; Institutes for Systems Genetics & Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China; West China Biobanks, Department of Clinical Research Management, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.
| | - Xianghui Fu
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, 610041 Sichuan, China.
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30
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Opazo-Ríos L, Tejera-Muñoz A, Soto Catalan M, Marchant V, Lavoz C, Mas Fontao S, Moreno JA, Fierro Fernandez M, Ramos R, Suarez-Alvarez B, López-Larrea C, Ruiz-Ortega M, Egido J, Rodrigues-Díez RR. Kidney microRNA Expression Pattern in Type 2 Diabetic Nephropathy in BTBR Ob/Ob Mice. Front Pharmacol 2022; 13:778776. [PMID: 35370692 PMCID: PMC8966705 DOI: 10.3389/fphar.2022.778776] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 02/10/2022] [Indexed: 12/11/2022] Open
Abstract
Diabetic nephropathy (DN) is the main leading cause of chronic kidney disease worldwide. Although remarkable therapeutic advances have been made during the last few years, there still exists a high residual risk of disease progression to end-stage renal failure. To further understand the pathogenesis of tissue injury in this disease, by means of the Next-Generation Sequencing, we have studied the microRNA (miRNA) differential expression pattern in kidneys of Black and Tan Brachyury (BTBR) ob/ob (leptin deficiency mutation) mouse. This experimental model of type 2 diabetes and obesity recapitulates the key histopathological features described in advanced human DN and therefore can provide potential useful translational information. The miRNA-seq analysis, performed in the renal cortex of 22-week-old BTBR ob/ob mice, pointed out a set of 99 miRNAs significantly increased compared to non-diabetic, non-obese control mice of the same age, whereas no miRNAs were significantly decreased. Among them, miR-802, miR-34a, miR-132, miR-101a, and mir-379 were the most upregulated ones in diabetic kidneys. The in silico prediction of potential targets for the 99 miRNAs highlighted inflammatory and immune processes, as the most relevant pathways, emphasizing the importance of inflammation in the pathogenesis of kidney damage associated to diabetes. Other identified top canonical pathways were adipogenesis (related with ectopic fatty accumulation), necroptosis (an inflammatory and regulated form of cell death), and epithelial-to-mesenchymal transition, the latter supporting the importance of tubular cell phenotype changes in the pathogenesis of DN. These findings could facilitate a better understanding of this complex disease and potentially open new avenues for the design of novel therapeutic approaches to DN.
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Affiliation(s)
- Lucas Opazo-Ríos
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Universidad Autónoma de Madrid, Madrid, Spain.,Facultad de Ciencias de la Salud, Universidad de Las Américas, Concepción, Chile
| | - Antonio Tejera-Muñoz
- Molecular and Cellular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz-Universidad Autónoma Madrid, Madrid, Spain
| | - Manuel Soto Catalan
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Universidad Autónoma de Madrid, Madrid, Spain
| | - Vanessa Marchant
- Molecular and Cellular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz-Universidad Autónoma Madrid, Madrid, Spain
| | - Carolina Lavoz
- Laboratorio de Nefrología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - Sebastián Mas Fontao
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Universidad Autónoma de Madrid, Madrid, Spain
| | - Juan Antonio Moreno
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, Maimónides Biomedical Research Institute of Cordoba (IMIBIC), UGC Nephrology, Hospital Universitario Reina Sofía, Córdoba, Spain
| | - Marta Fierro Fernandez
- Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Viral Vectors Service, Madrid, Spain
| | - Ricardo Ramos
- Unidad de Genómica Fundación Parque Científico de Madrid, Universidad Autónoma de Madrid, Madrid, Spain
| | - Beatriz Suarez-Alvarez
- Translational Immunology Laboratory, Health Research Institute of Asturias (ISPA), Oviedo, Spain
| | - Carlos López-Larrea
- Translational Immunology Laboratory, Health Research Institute of Asturias (ISPA), Oviedo, Spain.,Department of Immunology, Hospital Universitario Central De Asturias, Oviedo, Spain
| | - Marta Ruiz-Ortega
- Molecular and Cellular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz-Universidad Autónoma Madrid, Madrid, Spain
| | - Jesús Egido
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Universidad Autónoma de Madrid, Madrid, Spain
| | - Raúl R Rodrigues-Díez
- Molecular and Cellular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz-Universidad Autónoma Madrid, Madrid, Spain.,Translational Immunology Laboratory, Health Research Institute of Asturias (ISPA), Oviedo, Spain
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31
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Eini M, Parsi S, Barati M, Bahramali G, Alizadeh Zarei M, Kiani J, Azarnezhad A, Hosseini A. Bioinformatic Investigation of Micro RNA-802 Target Genes, Protein Networks, and Its Potential Prognostic Value in Breast Cancer. Avicenna J Med Biotechnol 2022; 14:154-164. [PMID: 35633990 PMCID: PMC9077654 DOI: 10.18502/ajmb.v14i2.8882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 01/22/2022] [Indexed: 11/24/2022] Open
Abstract
Background An increasing number of studies have suggested that unveiling the molecular network of miRNAs may provide novel therapeutic targets or biomarkers. In this study, we investigated the probable molecular functions that are related to microRNA-802 (miR-802) and evaluated its prognostic value in breast cancer utilizing bioinformatics tools. Methods PPI network, pathway enrichment and transcription factor analysis were applied to obtain hub genes among overlapping genes of four miRNA target prediction databases. Prognosis value assessments and expression analysis of hub genes using bioinformatics tools, as well as their literature validation were performed. Results Our results showed a significant correlation of the miR-802 overexpression with poor patient survival rate (BC, p=2.7e-5). We determined 247 target genes significant for GO and KEGG terms. Analysis of TFs by TRUST showed that RUNX3, FOXO3, and E2F1 are possible TFs that regulate the miR-802 expression and target genes network. According to our analysis; 21 genes might have an important function in miR-802 molecular processes and regulatory networks. The result shows that among these 21 genes, 8 genes (CASC3, ITGA4, AGO3, TARDBP, MED13L, SF1, SNRPE and CRNKL1) are positively correlated with patient survival. Therefore these genes could be considered and experimentally evaluated as a prognostic biomarker for breast cancer. Conclusion The comprehensive bioinformatics study on miR-802 target genes provided insight into miR-802 mediated pathways and processes. Furthermore, representing candidate target genes by prognostic values indicates the potential clinical application of miR-802 in breast cancer.
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Affiliation(s)
- Maryam Eini
- Department of Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Sepideh Parsi
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School Worcester, MA, USA
| | - Mahmood Barati
- Department of Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | | | - Jafar Kiani
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Assad Azarnezhad
- Liver and Digestive Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Arshad Hosseini
- Department of Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
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32
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Brown MR, Matveyenko AV. It's What and When You Eat: An Overview of Transcriptional and Epigenetic Responses to Dietary Perturbations in Pancreatic Islets. Front Endocrinol (Lausanne) 2022; 13:842603. [PMID: 35355560 PMCID: PMC8960041 DOI: 10.3389/fendo.2022.842603] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/07/2022] [Indexed: 01/07/2023] Open
Abstract
Our ever-changing modern environment is a significant contributor to the increased prevalence of many chronic diseases, and particularly, type 2 diabetes mellitus (T2DM). Although the modern era has ushered in numerous changes to our daily living conditions, changes in "what" and "when" we eat appear to disproportionately fuel the rise of T2DM. The pancreatic islet is a key biological controller of an organism's glucose homeostasis and thus plays an outsized role to coordinate the response to environmental factors to preserve euglycemia through a delicate balance of endocrine outputs. Both successful and failed adaptation to dynamic environmental stimuli has been postulated to occur due to changes in the transcriptional and epigenetic regulation of pathways associated with islet secretory function and survival. Therefore, in this review we examined and evaluated the current evidence elucidating the key epigenetic mechanisms and transcriptional programs underlying the islet's coordinated response to the interaction between the timing and the composition of dietary nutrients common to modern lifestyles. With the explosion of next generation sequencing, along with the development of novel informatic and -omic approaches, future work will continue to unravel the environmental-epigenetic relationship in islet biology with the goal of identifying transcriptional and epigenetic targets associated with islet perturbations in T2DM.
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Affiliation(s)
- Matthew R. Brown
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine and Science, Rochester, MN, United States
| | - Aleksey V. Matveyenko
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine and Science, Rochester, MN, United States
- Division of Endocrinology, Metabolism, Diabetes, and Nutrition, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, United States
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33
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Hu Q, Mu J, Liu Y, Yang Y, Liu Y, Pan Y, Zhang Y, Li L, Liu D, Chen J, Zhang F, Jin L. Obesity-Induced miR-455 Upregulation Promotes Adaptive Pancreatic β-Cell Proliferation Through the CPEB1/CDKN1B Pathway. Diabetes 2022; 71:394-411. [PMID: 35029277 DOI: 10.2337/db21-0134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 12/13/2021] [Indexed: 11/13/2022]
Abstract
Pancreatic β-cells adapt to compensate for increased metabolic demand during obesity. Although the miRNA pathway has an essential role in β-cell expansion, whether it is involved in adaptive proliferation is largely unknown. First, we report that EGR2 binding to the miR-455 promoter induced miR-455 upregulation in the pancreatic islets of obesity mouse models. Then, in vitro gain- or loss-of-function studies showed that miR-455 overexpression facilitated β-cell proliferation. Knockdown of miR-455 in ob/ob mice via pancreatic intraductal infusion prevented compensatory β-cell expansion. Mechanistically, our results revealed that increased miR-455 expression inhibits the expression of its target cytoplasmic polyadenylation element binding protein 1 (CPEB1), an mRNA binding protein that plays an important role in regulating insulin resistance and cell proliferation. Decreased CPEB1 expression inhibits elongation of the poly(A) tail and the subsequent translation of Cdkn1b mRNA, reducing the CDKN1B expression level and finally promoting β-cell proliferation. Taken together, our results show that the miR-455/CPEB1/CDKN1B pathway contributes to adaptive proliferation of β-cells to meet metabolic demand during obesity.
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Affiliation(s)
- Qianxing Hu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Jinming Mu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yuhong Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yue Yang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yue Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yi Pan
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yanfeng Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Ling Li
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu Province, China
- Pancreatic Research Institute, Southeast University, Nanjing, Jiangsu Province, China
| | - Dechen Liu
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu Province, China
| | - Jianqiu Chen
- College of Engineering, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Fangfang Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Liang Jin
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu Province, China
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Rodríguez-Sanabria JS, Escutia-Gutiérrez R, Rosas-Campos R, Armendáriz-Borunda JS, Sandoval-Rodríguez A. An Update in Epigenetics in Metabolic-Associated Fatty Liver Disease. Front Med (Lausanne) 2022; 8:770504. [PMID: 35087844 PMCID: PMC8787199 DOI: 10.3389/fmed.2021.770504] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 12/02/2021] [Indexed: 12/17/2022] Open
Abstract
Metabolic-associated fatty liver disease (MAFLD) is characterized by hepatic steatosis accompanied by one of three features: overweight or obesity, T2DM, or lean or normal weight with evidence of metabolic dysregulation. It is distinguished by excessive fat accumulation in hepatocytes, and a decrease in the liver's ability to oxidize fats, the accumulation of ectopic fat, and the activation of proinflammatory pathways. Chronic damage will keep this pathophysiologic cycle active causing progression from hepatic steatosis to cirrhosis and eventually, hepatocarcinoma. Epigenetics affecting gene expression without altering DNA sequence allows us to study MAFLD pathophysiology from a different perspective, in which DNA methylation processes, histone modifications, and miRNAs expression have been closely associated with MAFLD progression. However, these considerations also faced us with the circumstance that modifying those epigenetics patterns might lead to MAFLD regression. Currently, epigenetics is an area of great interest because it could provide new insights in therapeutic targets and non-invasive biomarkers. This review comprises an update on the role of epigenetic patterns, as well as innovative therapeutic targets and biomarkers in MAFLD.
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Affiliation(s)
- J Samael Rodríguez-Sanabria
- Department of Molecular Biology and Genomics, Institute for Molecular Biology in Medicine and Gene Therapy, CUCS, University of Guadalajara, Guadalajara, Mexico
| | - Rebeca Escutia-Gutiérrez
- Department of Molecular Biology and Genomics, Institute for Molecular Biology in Medicine and Gene Therapy, CUCS, University of Guadalajara, Guadalajara, Mexico
| | - Rebeca Rosas-Campos
- Department of Molecular Biology and Genomics, Institute for Molecular Biology in Medicine and Gene Therapy, CUCS, University of Guadalajara, Guadalajara, Mexico
| | - Juan S Armendáriz-Borunda
- Department of Molecular Biology and Genomics, Institute for Molecular Biology in Medicine and Gene Therapy, CUCS, University of Guadalajara, Guadalajara, Mexico.,School of Medicine and Health Sciences, Tecnologico de Monterrey, Campus Guadalajara, Zapopan, Mexico
| | - Ana Sandoval-Rodríguez
- Department of Molecular Biology and Genomics, Institute for Molecular Biology in Medicine and Gene Therapy, CUCS, University of Guadalajara, Guadalajara, Mexico
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35
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Li C, Wang D, Jiang Z, Gao Y, Sun L, Li R, Chen M, Lin C, Liu D. Non-coding RNAs in diabetes mellitus and diabetic cardiovascular disease. Front Endocrinol (Lausanne) 2022; 13:961802. [PMID: 36147580 PMCID: PMC9487522 DOI: 10.3389/fendo.2022.961802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 08/10/2022] [Indexed: 11/13/2022] Open
Abstract
More than 10% of the world's population already suffers from varying degrees of diabetes mellitus (DM), but there is still no cure for the disease. Cardiovascular disease (CVD) is one of the most common and dangerous of the many health complications that can be brought on by DM, and has become the leading cause of death in people with diabetes. While research on DM and associated CVD is advancing, the specific mechanisms of their development are still unclear. Given the threat of DM and CVD to humans, the search for new predictive markers and therapeutic ideas is imminent. Non-coding RNAs (ncRNAs) have been a popular subject of research in recent years. Although they do not encode proteins, they play an important role in living organisms, and they can cause disease when their expression is abnormal. Numerous studies have observed aberrant ncRNAs in patients with DM complications, suggesting that they may play an important role in the development of DM and CVD and could potentially act as biomarkers for diagnosis. There is additional evidence that treatment with existing drugs for DM, such as metformin, alters ncRNA expression levels, suggesting that regulation of ncRNA expression may be a key mechanism in future DM treatment. In this review, we assess the role of ncRNAs in the development of DM and CVD, as well as the evidence for ncRNAs as potential therapeutic targets, and make use of bioinformatics to analyze differential ncRNAs with potential functions in DM.
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Affiliation(s)
- Chengshun Li
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, China
| | - Dongxu Wang
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, China
| | - Ziping Jiang
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, China
| | - Yongjian Gao
- Department of Gastrointestinal Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Liqun Sun
- Department of Pediatrics, First Hospital of Jilin University, Changchun, China
| | - Rong Li
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, China
| | - Minqi Chen
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, China
| | - Chao Lin
- School of Grain Science and Technology, Jilin Business and Technology College, Changchun, China
| | - Dianfeng Liu
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, China
- *Correspondence: Dianfeng Liu,
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Li S, Zhao F, Tang Q, Xi C, He J, Wang Y, Zhu MX, Cao Z. Sarco/endoplasmic reticulum Ca 2+ -ATPase 2b mediates oxidation-induced endoplasmic reticulum stress to regulate neuropathic pain. Br J Pharmacol 2021; 179:2016-2036. [PMID: 34811737 DOI: 10.1111/bph.15744] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/24/2021] [Accepted: 11/05/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Neuropathic pain is a widespread health problem with limited curative treatment. Decreased sarco/endoplasmic reticulum Ca2+ -ATPase (SERCA) expression has been reported in dorsal root ganglion (DRG) of animals suffering from neuropathic pain. We aimed to establish the relationship between SERCA expression and the pain responses and to elucidate the underlying molecular mechanism. EXPERIMENTAL APPROACH Neuropathic pain was modeled using rat chronic constriction injury (CCI). Ca2+ imaging and current clamp patch-clamp were used to determine cytosolic Ca2+ levels and action potential firing, respectively. Western blots, immunofluorescence staining and RT-PCR were used to quantitatively assess protein and mRNA expression, respectively. H&E staining and coupled enzyme assay were used to evaluate the nerve injury and SERCA2b activity, respectively. KEY RESULTS SERCA2b is the predominant SERCA isoform in rat DRG and its expression is decreased after CCI at mRNA, protein and activity levels. Whereas inhibiting SERCA with thapsigargin causes neuronal hyperexcitation, nerve injury, ER stress, satellite glial cell activation and mechanical allodynia, activating SERCA by CDN1163 or overexpressing SERCA2b in DRG after CCI produces long-term relief of mechanical and thermal allodynia with accompanied morphological and functional restoration through alleviation of ER stress. Furthermore, the downregulation of DRG SERCA2b in CCI rats is caused by increased production of reactive oxygen species (ROS) through Sp1-dependent transcriptional inhibition. CONCLUSION AND IMPLICATIONS Our findings reveal a novel pathway centering around SERCA2b as the key molecule underlying the mechanism of development and maintenance of neuropathic pain, and SERCA2b activators have the potential for therapeutic treatment of neuropathic pain.
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Affiliation(s)
- Shaoheng Li
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Fang Zhao
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Qinglian Tang
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Chuchu Xi
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Jing He
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Yujing Wang
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Michael X Zhu
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Zhengyu Cao
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
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Pan C, Li M, Wang J, Chu X, Xiong J, Yang X, Tang Y, Ma D, Yuan C, Zhu J, Chang Y, Zhang J, Wang C. miR-4431 targets TRIP10/PRKD1 and impairs glucose metabolism. J Diabetes Investig 2021; 13:617-627. [PMID: 34800086 PMCID: PMC9017615 DOI: 10.1111/jdi.13714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/08/2021] [Accepted: 11/15/2021] [Indexed: 12/15/2022] Open
Abstract
Aim/Introduction Obesity is considered an important risk factor for many metabolic disorders, especially type 2 diabetes mellitus, and microRNAs (miRNAs) play a vital role in the development of type 2 diabetes mellitus. Therefore, we conducted this study to investigate the role of miR‐4431 in the obesity‐associated pathobiology of type 2 diabetes mellitus. Materials and methods Subjects were divided into normal control (n = 36), obese (n = 36), and type 2 diabetes mellitus (n = 12) groups, and serum miR‐4431 levels were analyzed. Adenovirus‐vectored miR‐4431 mimic or sponge was intraperitoneally injected into the normal diet group and the high‐fat diet group (HFD) mice to investigate glucose tolerance, insulin sensitivity, and lipid levels. The downstream target genes of miR‐4431 were predicted using bioinformatics, and they were verified in vitro. Results Serum miR‐4431 levels were significantly high in obese and type 2 diabetes mellitus individuals, and positively correlated with the body mass index and fasting plasma glucose levels. In HFD mice, miR‐4431 levels in the serum, white adipose tissue, and liver were significantly increased. Moreover, miR‐4431 impaired glucose tolerance, insulin sensitivity, and lipid metabolism in mice. Bioinformatic prediction suggested that TRIP10 and PRKD1 could be the downstream target genes of miR‐4431. The HFD mice showed a remarkable reduction in the mRNA levels of TRIP10 and PRKD1 in the liver, which were countered by blocking miR‐4431. In HepG2 and L02 cells, miR‐4431 could downregulate TRIP10 and PRKD1 while blocking glucose uptake. The luciferase reporter assay showed that miR‐4431 could bind TRIP10 and PRKD1 3′‐UTR. Conclusion miR‐4431 targets TRIP10/PRKD1 and impairs glucose metabolism.
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Affiliation(s)
- Chongge Pan
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Menghuan Li
- Shihezi University School of Medicine, Shihezi, China
| | - Jingzhou Wang
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Xiaolong Chu
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Jianyu Xiong
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Xin Yang
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Yihan Tang
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Dingling Ma
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Chenggang Yuan
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Jiaojiao Zhu
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Yongsheng Chang
- Shihezi University School of Medicine, Shihezi, China.,Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, China
| | - Jun Zhang
- Department of Biochemistry and Molecular Biology, Shihezi University School of Medicine, Shihezi, China
| | - Cuizhe Wang
- Ministry of Education Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi, China
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Sałówka A, Martinez-Sanchez A. Molecular Mechanisms of Nutrient-Mediated Regulation of MicroRNAs in Pancreatic β-cells. Front Endocrinol (Lausanne) 2021; 12:704824. [PMID: 34803905 PMCID: PMC8600252 DOI: 10.3389/fendo.2021.704824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/02/2021] [Indexed: 12/12/2022] Open
Abstract
Pancreatic β-cells within the islets of Langerhans respond to rising blood glucose levels by secreting insulin that stimulates glucose uptake by peripheral tissues to maintain whole body energy homeostasis. To different extents, failure of β-cell function and/or β-cell loss contribute to the development of Type 1 and Type 2 diabetes. Chronically elevated glycaemia and high circulating free fatty acids, as often seen in obese diabetics, accelerate β-cell failure and the development of the disease. MiRNAs are essential for endocrine development and for mature pancreatic β-cell function and are dysregulated in diabetes. In this review, we summarize the different molecular mechanisms that control miRNA expression and function, including transcription, stability, posttranscriptional modifications, and interaction with RNA binding proteins and other non-coding RNAs. We also discuss which of these mechanisms are responsible for the nutrient-mediated regulation of the activity of β-cell miRNAs and identify some of the more important knowledge gaps in the field.
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Affiliation(s)
| | - Aida Martinez-Sanchez
- Section of Cell Biology and Functional Genomics, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, United Kingdom
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Li X, Wan T, Li Y. Role of FoxO1 in regulating autophagy in type 2 diabetes mellitus (Review). Exp Ther Med 2021; 22:707. [PMID: 34007316 PMCID: PMC8120662 DOI: 10.3892/etm.2021.10139] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/09/2021] [Indexed: 12/11/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a major chronic disease that is characterized by pancreatic β-cell dysfunction and insulin resistance. Autophagy is a highly conserved intracellular recycling pathway and is involved in regulating intracellular homeostasis. Transcription factor Forkhead box O1 (FoxO1) also regulates fundamental cellular processes, including cell differentiation, metabolism and apoptosis, and proliferation to cellular stress. Increasing evidence suggest that autophagy and FoxO1 are involved in the pathogenesis of T2DM, including β-cell viability, apoptosis, insulin secretion and peripheral insulin resistance. Recent studies have demonstrated that FoxO1 improves insulin resistance by regulating target tissue autophagy. The present review summarizes current literature on the role of autophagy and FoxO1 in T2DM. The participation of FoxO1 in the development and occurrence of T2DM via autophagy is also discussed.
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Affiliation(s)
- Xiudan Li
- Department of Endocrinology, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Tingting Wan
- Department of Endocrinology, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Yanbo Li
- Department of Endocrinology, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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Zhang F, Yang Y, Chen X, Liu Y, Hu Q, Huang B, Liu Y, Pan Y, Zhang Y, Liu D, Liang R, Li G, Wei Q, Li L, Jin L. The long non-coding RNA βFaar regulates islet β-cell function and survival during obesity in mice. Nat Commun 2021; 12:3997. [PMID: 34183666 PMCID: PMC8238983 DOI: 10.1038/s41467-021-24302-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 06/07/2021] [Indexed: 02/08/2023] Open
Abstract
Despite obesity being a predisposing factor for pancreatic β-cell dysfunction and loss, the mechanisms underlying its negative effect on insulin-secreting cells remain poorly understood. In this study, we identify an islet-enriched long non-coding RNA (lncRNA), which we name β-cell function and apoptosis regulator (βFaar). βFaar is dramatically downregulated in the islets of the obese mice, and a low level of βFaar is necessary for the development of obesity-associated β-cell dysfunction and apoptosis. Mechanistically, βFaar promote the synthesis and secretion of insulin by upregulating islet-specific genes Ins2, NeuroD1, and Creb1 through sponging miR-138-5p. In addition, using quantitative mass spectrometry, we identify TRAF3IP2 and SMURF1 as interacting proteins that are specifically associated with βFaar. We demonstrate that SMURF1 ubiquitin ligase activity is essential for TRAF3IP2 ubiquitination and activation of NF-κB-mediate β-cell apoptosis. Our experiments provide direct evidence that dysregulated βFaar contributes to the development of obesity-induced β-cell injury and apoptosis. Beta-cell function is often impaired in obesity through incompletely understood mechanisms. Here the authors show that the long noncoding RNA βFaar is reduced by diet-induced obesity in mice, which leads to impaired beta-cell function via miR-138-5p and survival via TRAF3 Interacting Protein 2.
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Affiliation(s)
- Fangfang Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yue Yang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Xi Chen
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yue Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Qianxing Hu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Bin Huang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yuhong Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yi Pan
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Yanfeng Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Dechen Liu
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu Province, China
| | - Rui Liang
- Organ Transplant Center, Tianjin First Central Hospital, Nankai University, Tianjin, China
| | - Guoqing Li
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu Province, China.,Pancreatic Research Institute, Southeast University, Nanjing, China
| | - Qiong Wei
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu Province, China. .,Pancreatic Research Institute, Southeast University, Nanjing, China.
| | - Ling Li
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu Province, China. .,Pancreatic Research Institute, Southeast University, Nanjing, China.
| | - Liang Jin
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China.
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Yang S, Qu Y, Chen J, Chen S, Sun L, Zhou Y, Fan Y. Bee Pollen Polysaccharide From Rosa rugosa Thunb. (Rosaceae) Promotes Pancreatic β-Cell Proliferation and Insulin Secretion. Front Pharmacol 2021; 12:688073. [PMID: 34262457 PMCID: PMC8273306 DOI: 10.3389/fphar.2021.688073] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/18/2021] [Indexed: 11/20/2022] Open
Abstract
Insufficient pancreatic β-cell or insulin-producing β-cell are implicated in all types of diabetes mellitus. Our previous studies showed bee pollen polysaccharide RBPP-P improves insulin resistance in type 2 diabetic mice by inhibiting liver fat deposition. However, its potential of regulating β-cell function and integrity is not fully known. Herein, we observed that β-cell proliferation (n = 10), insulin synthesis (n = 5, p = 0.01684) and insulin incretion (n = 5, p = 0.02115) were intensely activated in MIN6 cells when treatment with RBPP-P. In alloxan-induced diabetic mice, oral administration of RBPP-P (n = 10) effectively decreased the blood glucose (p = 0.0326), drink intake (p < 0.001) and urine (p < 0.001). It directly stimulated phosphorylation of p38 (p = 0.00439), ERK (p = 0.02951) and AKT (p = 0.0072) to maintain the islet function and mass. Thus, our data suggest that RBPP-P is a natural compound to regulate β-cell proliferation and function, indicating it might have therapeutic potential against type 1 diabetes.
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Affiliation(s)
| | | | | | | | | | | | - Yuying Fan
- Engineering Research Center of Glycoconjugates Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun, China
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Obesity-induced changes in human islet G protein-coupled receptor expression: Implications for metabolic regulation. Pharmacol Ther 2021; 228:107928. [PMID: 34174278 DOI: 10.1016/j.pharmthera.2021.107928] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/10/2021] [Accepted: 05/18/2021] [Indexed: 12/22/2022]
Abstract
G protein-coupled receptors (GPCRs) are a large family of cell surface receptors that are the targets for many different classes of pharmacotherapy. The islets of Langerhans are central to appropriate glucose homeostasis through their secretion of insulin, and islet function can be modified by ligands acting at the large number of GPCRs that islets express. The human islet GPCRome is not a static entity, but one that is altered under pathophysiological conditions and, in this review, we have compared expression of GPCR mRNAs in human islets obtained from normal weight range donors, and those with a weight range classified as obese. We have also considered the likely outcomes on islet function that the altered GPCR expression status confers and the possible impact that adipokines, secreted from expanded fat depots, could have at those GPCRs showing altered expression in obesity.
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miR-802 regulates Paneth cell function and enterocyte differentiation in the mouse small intestine. Nat Commun 2021; 12:3339. [PMID: 34099655 PMCID: PMC8184787 DOI: 10.1038/s41467-021-23298-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/20/2021] [Indexed: 02/05/2023] Open
Abstract
The intestinal epithelium is a complex structure that integrates digestive, immunological, neuroendocrine, and regenerative functions. Epithelial homeostasis is maintained by a coordinated cross-talk of different epithelial cell types. Loss of integrity of the intestinal epithelium plays a key role in inflammatory diseases and gastrointestinal infection. Here we show that the intestine-enriched miR-802 is a central regulator of intestinal epithelial cell proliferation, Paneth cell function, and enterocyte differentiation. Genetic ablation of mir-802 in the small intestine of mice leads to decreased glucose uptake, impaired enterocyte differentiation, increased Paneth cell function and intestinal epithelial proliferation. These effects are mediated in part through derepression of the miR-802 target Tmed9, a modulator of Wnt and lysozyme/defensin secretion in Paneth cells, and the downstream Wnt signaling components Fzd5 and Tcf4. Mutant Tmed9 mice harboring mutations in miR-802 binding sites partially recapitulate the augmented Paneth cell function of mice lacking miR-802. Our study demonstrates a broad miR-802 network that is important for the integration of signaling pathways of different cell types controlling epithelial homeostasis in the small intestine.
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MicroRNA-mediated regulation of glucose and lipid metabolism. Nat Rev Mol Cell Biol 2021; 22:425-438. [PMID: 33772227 PMCID: PMC8853826 DOI: 10.1038/s41580-021-00354-w] [Citation(s) in RCA: 146] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2021] [Indexed: 02/01/2023]
Abstract
In animals, systemic control of metabolism is conducted by metabolic tissues and relies on the regulated circulation of a plethora of molecules, such as hormones and lipoprotein complexes. MicroRNAs (miRNAs) are a family of post-transcriptional gene repressors that are present throughout the animal kingdom and have been widely associated with the regulation of gene expression in various contexts, including virtually all aspects of systemic control of metabolism. Here we focus on glucose and lipid metabolism and review current knowledge of the role of miRNAs in their systemic regulation. We survey miRNA-mediated regulation of healthy metabolism as well as the contribution of miRNAs to metabolic dysfunction in disease, particularly diabetes, obesity and liver disease. Although most miRNAs act on the tissue they are produced in, it is now well established that miRNAs can also circulate in bodily fluids, including their intercellular transport by extracellular vesicles, and we discuss the role of such extracellular miRNAs in systemic metabolic control and as potential biomarkers of metabolic status and metabolic disease.
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Behl T, Kaur I, Sehgal A, Singh S, Zengin G, Negrut N, Nistor-Cseppento DC, Pavel FM, Corb Aron RA, Bungau S. Exploring the Genetic Conception of Obesity via the Dual Role of FoxO. Int J Mol Sci 2021. [DOI: https://doi.org/10.3390/ijms22063179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Obesity or overweight are not superficial problems, constituting a pressing issue. The obesity index has almost tripled since 1975, which is an alarming state. Most of the individuals are currently becoming overweight or have inappropriate body mass index (BMI) conditions. Obesity is characterized by increased fat accumulation and thus poses a higher health risk. There is increased size and volume of fat cells in the body, which usually accounts for obesity. Many investigations have been carried out in this area, such as behavioral improvements, dietary changes, chemical involvements, etc., but presently no such goals are established to manage these health concerns. Based on previous literature reports and our interpretation, the current review indicates the involvement of various transcriptional and transporter functions in modifying the above-mentioned health conditions. Various transcriptional factors such as Forkhead box O1 (FoxO1) impart a significant effect on the physiology and pathology of metabolic dysfunction such as obesity. FoxO1 plays a dual role whether in the progression or suppression of metabolic processes depending on its targets. Thus, in the current study, will be discussed the dual role of FoxO1 in metabolic conditions (such as obesity), also summarizing the role of various other transcriptional factors involved in obesity.
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46
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Behl T, Kaur I, Sehgal A, Singh S, Zengin G, Negrut N, Nistor-Cseppento DC, Pavel FM, Corb Aron RA, Bungau S. Exploring the Genetic Conception of Obesity via the Dual Role of FoxO. Int J Mol Sci 2021; 22:ijms22063179. [PMID: 33804729 PMCID: PMC8003860 DOI: 10.3390/ijms22063179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/10/2021] [Accepted: 03/18/2021] [Indexed: 12/12/2022] Open
Abstract
Obesity or overweight are not superficial problems, constituting a pressing issue. The obesity index has almost tripled since 1975, which is an alarming state. Most of the individuals are currently becoming overweight or have inappropriate body mass index (BMI) conditions. Obesity is characterized by increased fat accumulation and thus poses a higher health risk. There is increased size and volume of fat cells in the body, which usually accounts for obesity. Many investigations have been carried out in this area, such as behavioral improvements, dietary changes, chemical involvements, etc., but presently no such goals are established to manage these health concerns. Based on previous literature reports and our interpretation, the current review indicates the involvement of various transcriptional and transporter functions in modifying the above-mentioned health conditions. Various transcriptional factors such as Forkhead box O1 (FoxO1) impart a significant effect on the physiology and pathology of metabolic dysfunction such as obesity. FoxO1 plays a dual role whether in the progression or suppression of metabolic processes depending on its targets. Thus, in the current study, will be discussed the dual role of FoxO1 in metabolic conditions (such as obesity), also summarizing the role of various other transcriptional factors involved in obesity.
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Affiliation(s)
- Tapan Behl
- Department of Pharmacology, Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (I.K.); (A.S.); (S.S.)
- Correspondence: (T.B.); (S.B.); Tel.: +40-726-776-588 (S.B.)
| | - Ishnoor Kaur
- Department of Pharmacology, Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (I.K.); (A.S.); (S.S.)
| | - Aayush Sehgal
- Department of Pharmacology, Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (I.K.); (A.S.); (S.S.)
| | - Sukhbir Singh
- Department of Pharmacology, Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (I.K.); (A.S.); (S.S.)
| | - Gokhan Zengin
- Department of Biology, Faculty of Science, Selcuk University Campus, Konya 42130, Turkey;
| | - Nicoleta Negrut
- Department of Psycho-Neuroscience and Recovery, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (N.N.); (D.C.N.-C.)
| | - Delia Carmen Nistor-Cseppento
- Department of Psycho-Neuroscience and Recovery, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (N.N.); (D.C.N.-C.)
| | - Flavia Maria Pavel
- Department of Preclinical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (F.M.P.); (R.A.C.A.)
| | - Raluca Anca Corb Aron
- Department of Preclinical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (F.M.P.); (R.A.C.A.)
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania
- Correspondence: (T.B.); (S.B.); Tel.: +40-726-776-588 (S.B.)
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Seok S, Sun H, Kim YC, Kemper B, Kemper JK. Defective FXR-SHP Regulation in Obesity Aberrantly Increases miR-802 Expression, Promoting Insulin Resistance and Fatty Liver. Diabetes 2021; 70:733-744. [PMID: 33328206 PMCID: PMC7897352 DOI: 10.2337/db20-0856] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 12/08/2020] [Indexed: 12/13/2022]
Abstract
Aberrantly elevated expression in obesity of microRNAs (miRNAs), including the miRNA miR-802, contributes to obesity-associated metabolic complications, but the mechanisms underlying the elevated expression are unclear. Farnesoid X receptor (FXR), a key regulator of hepatic energy metabolism, has potential for treatment of obesity-related diseases. We examined whether a nuclear receptor cascade involving FXR and FXR-induced small heterodimer partner (SHP) regulates expression of miR-802 to maintain glucose and lipid homeostasis. Hepatic miR-802 levels are increased in FXR-knockout (KO) or SHP-KO mice and are decreased by activation of FXR in a SHP-dependent manner. Mechanistically, transactivation of miR-802 by aromatic hydrocarbon receptor (AHR) is inhibited by SHP. In obese mice, activation of FXR by obeticholic acid treatment reduced miR-802 levels and improved insulin resistance and hepatosteatosis, but these beneficial effects were largely abolished by overexpression of miR-802. In patients with nonalcoholic fatty liver disease (NAFLD) and in obese mice, occupancy of SHP is reduced and that of AHR is modestly increased at the miR-802 promoter, consistent with elevated hepatic miR-802 expression. These results demonstrate that normal inhibition of miR-802 by FXR-SHP is defective in obesity, resulting in increased miR-802 levels, insulin resistance, and fatty liver. This FXR-SHP-miR-802 pathway may present novel targets for treating type 2 diabetes and NAFLD.
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Affiliation(s)
- Sunmi Seok
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL
| | - Hao Sun
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL
| | - Young-Chae Kim
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL
| | - Byron Kemper
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL
| | - Jongsook Kim Kemper
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL
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Sun Y, Qu J, Wang J, Zhao R, Wang C, Chen L, Hou X. Clinical and Functional Characteristics of a Novel KLF11 Cys354Phe Variant Involved in Maturity-Onset Diabetes of the Young. J Diabetes Res 2021; 2021:7136869. [PMID: 33604390 PMCID: PMC7870296 DOI: 10.1155/2021/7136869] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 11/18/2020] [Accepted: 01/10/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Mutations in human KLF11 may lead to the development of maturity-onset diabetes of the young 7 (MODY7). This occurs due to impaired insulin synthesis in the pancreas. To date, the clinical and functional characteristics of the novel KLF11 mutation c.1061G > T have not yet been reported. METHODS Whole-exon sequencing was used to screen the proband and family members with clinical suspicion of the KLF11 variant. Luciferase reporter assays were used to investigate whether the KLF11 variant binds to the insulin promoter. Real-time PCR, western blotting, and glucose-stimulated insulin secretion (GSIS) analysis were used to analyze the KLF11 variant that regulates insulin expression and insulin secretion activity in beta cell lines. The Freestyle Libre H (Abbott Diabetes Care Ltd) was used to dynamically monitor the proband daily blood glucose levels. RESULTS Mutation screening for the whole exon genes identified a heterozygous KLF11 (c.1061G > T) variant in the proband, her mother, and her maternal grandfather. Cell-based luciferase reporter assays using wild-type and mutant transgenes revealed that the KLF11 (c.1061G > T) variant had impaired insulin promoter regulation activity. Moreover, this variant was found to impair insulin expression and insulin secretion in pancreatic beta cells. The proband had better blood glucose control without staple food intake (p < 0.05). CONCLUSIONS Herein, for the first time, we report a novel KLF11 (c.1061G > T) monogenic mutation associated with MODY7. This variant has impaired insulin promoter regulation activity and impairs insulin expression and secretion in pancreatic beta cells. Therefore, administering oral antidiabetic drugs along with dietary intervention may benefit the proband.
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Affiliation(s)
- Yujing Sun
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012 Shandong Province, China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012 Shandong Province, China
| | - Jingru Qu
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012 Shandong Province, China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012 Shandong Province, China
| | - Jing Wang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012 Shandong Province, China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012 Shandong Province, China
| | - Ruxing Zhao
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012 Shandong Province, China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012 Shandong Province, China
| | - Chuan Wang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012 Shandong Province, China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012 Shandong Province, China
| | - Li Chen
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012 Shandong Province, China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012 Shandong Province, China
| | - Xinguo Hou
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012 Shandong Province, China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012 Shandong Province, China
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Kim H, Kulkarni RN. Epigenetics in β-cell adaptation and type 2 diabetes. Curr Opin Pharmacol 2020; 55:125-131. [PMID: 33232934 DOI: 10.1016/j.coph.2020.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/29/2020] [Accepted: 10/09/2020] [Indexed: 02/06/2023]
Abstract
Healthy pancreatic β-cells adapt to systemic insulin resistance to maintain normal blood glucose levels, and a failure of this adaptation leads to type 2 diabetes in humans. While genome-wide association studies have uncovered genetic variants that are associated with type 2 diabetes, it is still insufficient to explain the high prevalence of this disease. Epigenetics is the study of gene expression changes that do not involve DNA sequence alterations such as DNA methylation, histone modification, and non-coding RNAs. Over the last decade, a large number of studies have reported on the role of epigenetics in β-cell biology. In this review, we summarize the epigenetic mechanisms in β-cell adaptation and type 2 diabetes, including alterations in three-dimensional chromatin structure and RNA modifications.
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Affiliation(s)
- Hyunki Kim
- Islet Cell and Regenerative Biology, Joslin Diabetes Center, Boston, MA, USA; Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Rohit N Kulkarni
- Islet Cell and Regenerative Biology, Joslin Diabetes Center, Boston, MA, USA; Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA.
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50
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Saleem M, Barturen‐Larrea P, Gomez JA. Emerging roles of Sox6 in the renal and cardiovascular system. Physiol Rep 2020; 8:e14604. [PMID: 33230925 PMCID: PMC7683808 DOI: 10.14814/phy2.14604] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 12/15/2022] Open
Abstract
The function of Sex-determining Region Y (SRY)-related high-mobility-group box (Sox) family of transcription factors in cell fate decisions during embryonic development are well-established. Accumulating evidence indicates that the Sox family of transcription factors are fundamental in adult tissue homeostasis, regeneration, and physiology. The SoxD subfamily of genes are expressed in various cell types of different organs during embryogenesis and adulthood and have been involved in cell-fate determination, cellular proliferation and survival, differentiation, and terminal maturation in a number of cell lineages. The dysregulation in the function of SoxD proteins (i.e. Sox5, Sox6, Sox13, and Sox23) have been implicated in different disease conditions such as chondrodysplasia, cancer, diabetes, hypertension, autoimmune diseases, osteoarthritis among others. In this minireview, we present recent developments related to the transcription factor Sox6, which is involved in a number of diseases such as diabetic nephropathy, adipogenesis, cardiomyopathy, inflammatory bowel disease, and cancer. Sox6 has been implicated in the regulation of renin expression and JG cell recruitment in mice during sodium depletion and dehydration. We provide a current perspective of Sox6 research developments in last five years, and the implications of Sox6 functions in cardiovascular physiology and disease conditions.
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Affiliation(s)
- Mohammad Saleem
- Department of Medicine / Clinical Pharmacology DivisionVanderbilt University Medical CenterNashvilleTNUSA
| | - Pierina Barturen‐Larrea
- Department of Medicine / Clinical Pharmacology DivisionVanderbilt University Medical CenterNashvilleTNUSA
| | - Jose A. Gomez
- Department of Medicine / Clinical Pharmacology DivisionVanderbilt University Medical CenterNashvilleTNUSA
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