1
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Yao S, Prates K, Freydenzon A, Assante G, McRae AF, Morris MJ, Youngson NA. Liver-specific deletion of de novo DNA methyltransferases protects against glucose intolerance in high-fat diet-fed male mice. FASEB J 2024; 38:e23690. [PMID: 38795327 DOI: 10.1096/fj.202301546rr] [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: 08/03/2023] [Revised: 04/25/2024] [Accepted: 05/10/2024] [Indexed: 05/27/2024]
Abstract
Alterations to gene transcription and DNA methylation are a feature of many liver diseases including fatty liver disease and liver cancer. However, it is unclear whether the DNA methylation changes are a cause or a consequence of the transcriptional changes. It is even possible that the methylation changes are not required for the transcriptional changes. If DNA methylation is just a minor player in, or a consequence of liver transcriptional change, then future studies in this area should focus on other systems such as histone tail modifications. To interrogate the importance of de novo DNA methylation, we generated mice that are homozygous mutants for both Dnmt3a and Dnmt3b in post-natal liver. These mice are viable and fertile with normal sized livers. Males, but not females, showed increased adipose depots, yet paradoxically, improved glucose tolerance on both control diet and high-fat diets (HFD). Comparison of the transcriptome and methylome with RNA sequencing and whole-genome bisulfite sequencing in adult hepatocytes revealed that widespread loss of methylation in CpG-rich regions in the mutant did not induce loss of homeostatic transcriptional regulation. Similarly, extensive transcriptional changes induced by HFD did not require de novo DNA methylation. The improved metabolic phenotype of the Dnmt3a/3b mutant mice may be mediated through the dysregulation of a subset of glucose and fat metabolism genes which increase both glucose uptake and lipid export by the liver. However, further work is needed to confirm this.
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Affiliation(s)
- S Yao
- Department of Pharmacology, School of Biomedical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
| | - K Prates
- Department of Pharmacology, School of Biomedical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
- Department of Biotechnology, Genetics, and Cellular Biology, State University of Maringá, Maringá, Brazil
| | - A Freydenzon
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - G Assante
- Roger Williams Institute of Hepatology, Foundation for Liver Research, London, UK
- Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - A F McRae
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - M J Morris
- Department of Pharmacology, School of Biomedical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
| | - N A Youngson
- Department of Pharmacology, School of Biomedical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
- Roger Williams Institute of Hepatology, Foundation for Liver Research, London, UK
- Faculty of Life Sciences and Medicine, King's College London, London, UK
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2
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Sivri D, Gezmen-Karadağ M. Effects of Phytochemicals on Type 2 Diabetes via MicroRNAs. Curr Nutr Rep 2024:10.1007/s13668-024-00549-5. [PMID: 38805166 DOI: 10.1007/s13668-024-00549-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2024] [Indexed: 05/29/2024]
Abstract
PURPOSE OF REVIEW Type 2 diabetes, characterized by inadequate insulin secretion and resistance, is increasingly prevalent. To effectively manage type 2 diabetes, identifying new therapeutic targets is crucial. MicroRNAs, short noncoding RNA molecules, play a pivotal role in regulating β-cell function, insulin production, and resistance, and show promise as biomarkers for predicting type 2 diabetes onset. Phytochemicals, known for their antioxidant activities, may influence microRNA expression, potentially improving insulin sensitivity and mitigating associated complications. This review aims to explore the significance of microRNA in type 2 diabetes, their potential as biomarkers, and how certain phytochemicals may modulate microRNA expressions to reduce or prevent diabetes and its complications. RECENT FINDINGS Current research suggests that microRNAs show promise as novel therapeutic biomarkers for diagnosing type 2 diabetes and monitoring diabetic complications. Additionally, phytochemicals may regulate microRNAs to control type 2 diabetes, presenting a potential therapeutic strategy. The multifactorial effects of phytochemicals on type 2 diabetes and its complications through microRNAs warrant further research to elucidate their mechanisms. Comprehensive clinical trials are needed to assess the safety and efficacy of phytochemicals and their combinations. Given their ability to modulate microRNAs expression, incorporating phytochemical-rich foods into the diet may be beneficial.
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Affiliation(s)
- Dilek Sivri
- Department of Nutrition and Dietetic, Faculty of Health Science, Anadolu University, Eskişehir, Turkey.
| | - Makbule Gezmen-Karadağ
- Department of Nutrition and Dietetic, Faculty of Health Science, Gazi University, Ankara, Turkey
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3
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Afsharmanesh MR, Mohammadi Z, Mansourian AR, Jafari SM. A Review of micro RNAs changes in T2DM in animals and humans. J Diabetes 2023; 15:649-664. [PMID: 37329278 PMCID: PMC10415875 DOI: 10.1111/1753-0407.13431] [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] [Received: 08/05/2022] [Revised: 04/22/2023] [Accepted: 05/24/2023] [Indexed: 06/19/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) and its associated complications have become a crucial public health concern in the world. According to the literature, chronic inflammation and the progression of T2DM have a close relationship. Accumulated evidence suggests that inflammation enhances the insulin secretion lost by islets of Langerhans and the resistance of target tissues to insulin action, which are two critical features in T2DM development. Based on recently highlighted research that plasma concentration of inflammatory mediators such as tumor necrosis factor α and interleukin-6 are elevated in insulin-resistant and T2DM, and it raises novel question marks about the processes causing inflammation in both situations. Over the past few decades, microRNAs (miRNAs), a class of short, noncoding RNA molecules, have been discovered to be involved in the regulation of inflammation, insulin resistance, and T2DM pathology. These noncoding RNAs are specifically comprised of RNA-induced silencing complexes and regulate the expression of specific protein-coding genes through various mechanisms. There is extending evidence that describes the expression profile of a special class of miRNA molecules altered during T2DM development. These modifications can be observed as potential biomarkers for the diagnosis of T2DM and related diseases. In this review study, after reviewing the possible mechanisms involved in T2DM pathophysiology, we update recent information on the miRNA roles in T2DM, inflammation, and insulin resistance.
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Affiliation(s)
- Mohammad Reza Afsharmanesh
- Metabolic Disorders Research CenterGolestan University of Medical SciencesGorganIran
- Department of Biochemistry and Biophysics, School of MedicineGolestan University of Medical SciencesGorganIran
| | - Zeinab Mohammadi
- Metabolic Disorders Research CenterGolestan University of Medical SciencesGorganIran
- Department of Biochemistry and Biophysics, School of MedicineGolestan University of Medical SciencesGorganIran
| | - Azad Reza Mansourian
- Metabolic Disorders Research CenterGolestan University of Medical SciencesGorganIran
- Department of Biochemistry and Biophysics, School of MedicineGolestan University of Medical SciencesGorganIran
| | - Seyyed Mehdi Jafari
- Metabolic Disorders Research CenterGolestan University of Medical SciencesGorganIran
- Department of Biochemistry and Biophysics, School of MedicineGolestan University of Medical SciencesGorganIran
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4
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MiR-34a-5p promotes hepatic gluconeogenesis by suppressing SIRT1 expression. Exp Cell Res 2022; 420:113336. [PMID: 36058294 DOI: 10.1016/j.yexcr.2022.113336] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 08/27/2022] [Accepted: 08/27/2022] [Indexed: 11/24/2022]
Abstract
Elevated hepatic gluconeogenesis is a major contributor of fasting hyperglycemia in diabetes. MicroRNAs (miRNAs) are tightly linked to glucose metabolism, but their role in hepatic gluconeogenesis remains largely unkown. In this current study, miR-34a-5p expression was significantly increased in liver tissues of db/db mice. Overexpression of miR-34a-5p promoted hepatic glucose production in mouse primary hepatocytes with increased expressions of gluconeogenic genes while miR-34a-5p inhibition displayed a contrary action. MiR-34a-5p overexpression in mouse primary hepatocytes repressed SIRT1 expression. SIRT1 inhibition by EX527 blocked phosphoenolpyruvate carboxykinase (PEPCK) protein degradation and enhanced hepatic gluconeogenesis. Treatment of A485 (a CBP/p300 inhibitor) decreased miR-34a-5p and PEPCK expressions in the livers of db/db mice, but elevated SIRT1 protein expression. In mouse primary hepatocytes, A485 exhibited a similar result. Overexpression of miR-34a-5p attenuated A485-inhibited gluconeogenic gene expressions and A485-induced SIRT1 protein expression. Finally, after miR-34a-5p was inhibited in the livers of db/db mice, hepatic glucose production and gluconeogenic gene expressions were markedly lowered. Our findings highlight a critical role of miR-34a-5p in the regulation of hepatic gluconeogenesis and miR-34a-5p may be a potential target in the treatment of type 2 diabetes.
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5
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Liu H, Guan H, Tan X, Jiang Y, Li F, Sun-Waterhouse D, Li D. Enhanced alleviation of insulin resistance via the IRS-1/Akt/FOXO1 pathway by combining quercetin and EGCG and involving miR-27a-3p and miR-96-5p. Free Radic Biol Med 2022; 181:105-117. [PMID: 35124182 DOI: 10.1016/j.freeradbiomed.2022.02.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/29/2022] [Accepted: 02/02/2022] [Indexed: 12/22/2022]
Abstract
Quercetin and EGCG exhibit anti-diabetic and anti-obesity activities, however, their interactive effects in anti-diabetic/anti-obesity actions and underlying mechanisms remain unclear. This study aimed to fill these knowledge gaps. Quercetin, EGCG or their combination attenuated insulin resistance and decreased hepatic gluconeogenesis in high-fat-high-fructose diet (HFFD)-fed C57BL/6 mice and in palmitic acid (PA)-treated HepG2 cells. In mice, supplementation with quercetin (0.05%w/w), EGCG (0.05%w/w) and their combination (quercetin 0.05%+EGCG 0.05%w/w) reduced weight gain and fasting blood glucose and improved serum biochemical parameters. Compare with quercetin/EGCG alone, the quercetin-EGCG combination reduced gluconeogenesis to a greater extent via IRS-1/Akt/FOXO1-mediated down-regulation of downstream PEPCK and G-6-pase. In HepG2 cells, the quercetin (5 μM)-EGCG (5 μM) co-treatment exerted greater suppression on PA-induced changes in glucose and glycogen contents and hexokinase and G-6-pase activities than quercetin/EGCG alone (each 10 μM). The quercetin-EGCG co-treatment reduced glucose production through targeting FOXO1 and inhibiting the transcription of gluconeogenic enzymes. MiR-27a-3p and miR-96-5p regulated directly FOXO1 expression and function, and co-inhibition of miR-27a-3p and miR-96-5p weakened greatly the protective effect of quercetin-EGCG combination. This is the first report on the contributions of miR-27a-3p and miR-96-5p to the synergistic and protective effect of the quercetin-EGCG co-treatment against PA-induced insulin resistance through inhibiting FOXO1 expression.
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Affiliation(s)
- Hui Liu
- College of Food Science and Engineering, Shandong Agricultural University, Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, Taian, 271018, PR China
| | - Hui Guan
- College of Food Science and Engineering, Shandong Agricultural University, Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, Taian, 271018, PR China
| | - Xintong Tan
- College of Food Science and Engineering, Shandong Agricultural University, Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, Taian, 271018, PR China
| | - Yang Jiang
- College of Food Science and Engineering, Shandong Agricultural University, Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, Taian, 271018, PR China.
| | - Feng Li
- College of Food Science and Engineering, Shandong Agricultural University, Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, Taian, 271018, PR China
| | - Dongxiao Sun-Waterhouse
- College of Food Science and Engineering, Shandong Agricultural University, Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, Taian, 271018, PR China; School of Chemical Sciences, The University of Auckland, New Zealand
| | - Dapeng Li
- College of Food Science and Engineering, Shandong Agricultural University, Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, Taian, 271018, PR China.
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6
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MicroRNA-185 modulates CYP7A1 mediated cholesterol-bile acid metabolism through post-transcriptional and post-translational regulation of FoxO1. Atherosclerosis 2022; 348:56-67. [DOI: 10.1016/j.atherosclerosis.2022.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/22/2022] [Accepted: 03/03/2022] [Indexed: 12/22/2022]
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7
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Zhao T, Wang J, He A, Wang S, Chen Y, Lu J, Lv J, Li S, Wang J, Qian M, Li H, Shen X. Mebhydrolin ameliorates glucose homeostasis in type 2 diabetic mice by functioning as a selective FXR antagonist. Metabolism 2021; 119:154771. [PMID: 33831422 DOI: 10.1016/j.metabol.2021.154771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 03/01/2021] [Accepted: 03/28/2021] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Type 2 diabetes mellitus (T2DM) is a chronic disease with hallmarks of hyperglycemia and hyperlipidemia. Long-term hyperglycemia damages the functions of multiple tissues and organs leading to a series of complications and disability or even death. Nuclear receptor farnesoid X receptor (FXR) antagonism has been recently discovered to exhibit beneficial effect on glucose metabolism in T2DM mice, although the underlying mechanisms remain unclear. Here, we performed the study on the discovery of new FXR antagonist and investigated the mechanism underlying the amelioration of FXR antagonism on glucose homeostasis in T2DM mice by using the determined FXR antagonist as a probe. METHODS FXR antagonist Mebhydrolin was discovered by screening against the lab in-house FDA approved drug library through surface plasmon resonance (SPR), microscale thermophoresis (MST), AlphaScreen, mammalian one-hybrid and transactivation assays. Activity of Mebhydrolin in improving glucose homeostasis was evaluated in db/db and HFD/STZ-induced T2DM mice, and the mechanisms governing the regulation of Mebhydrolin were investigated by assays of immunostaining, Western blot, ELISA, RT-PCR against liver tissues of both T2DM mice and the T2DM mice with liver-specific FXR knockdown injected via adeno-associated-virus AAV-FXR-RNAi and mouse primary hepatocytes. Finally, molecular docking and molecular dynamics (MD) technology-based study was performed to investigate the structural basis for the antagonistic regulation of Mebhydrolin against FXR at an atomic level. FINDINGS Mebhydrolin ameliorated blood glucose homeostasis in T2DM mice by both suppressing hepatic gluconeogenesis via FXR/miR-22-3p/PI3K/AKT/FoxO1 pathway and promoting glycogen synthesis through FXR/miR-22-3p/PI3K/AKT/GSK3β pathway. Structurally, residues L291, M332 and Y373 of FXR were required for Mebhydrolin binding to FXR-LBD, and Mebhydrolin induced H2 and H6 shifting of FXR potently affecting the regulation of the downstream target genes. CONCLUSIONS Our work has revealed a novel mode for the regulation of FXR against glucose metabolism in T2DM mice and highlighted the potential of Mebhydrolin in the treatment of T2DM.
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MESH Headings
- Animals
- Blood Glucose/drug effects
- Blood Glucose/metabolism
- Carbolines/chemistry
- Carbolines/pharmacokinetics
- Carbolines/therapeutic use
- Cells, Cultured
- Diabetes Mellitus, Experimental/chemically induced
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Type 2/chemically induced
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/metabolism
- Gluconeogenesis/drug effects
- Gluconeogenesis/genetics
- Glucose/metabolism
- HEK293 Cells
- Homeostasis/drug effects
- Humans
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Molecular Docking Simulation
- Protein Interaction Domains and Motifs
- Receptors, Cytoplasmic and Nuclear/antagonists & inhibitors
- Receptors, Cytoplasmic and Nuclear/chemistry
- Receptors, Cytoplasmic and Nuclear/genetics
- Receptors, Cytoplasmic and Nuclear/metabolism
- Streptozocin
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Affiliation(s)
- Tong Zhao
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jie Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Anxu He
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Shan Wang
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yidi Chen
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jian Lu
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jianlu Lv
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Shiliang Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jiaying Wang
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Minyi Qian
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China.
| | - Honglin Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Xu Shen
- School of Medicine& Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China.
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8
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Amini MR, Djafari F, Sheikhhossein F, Yarizadeh H, Naghshi S, Shahavandi M, Payandeh N, Akbarzade Z, Djafarian K, Shab-Bidar S. Association of Nutrient Patterns and Their Relation with Obesity in Iranian Adults: a Population Based Study. Clin Nutr Res 2021; 10:59-71. [PMID: 33564653 PMCID: PMC7850815 DOI: 10.7762/cnr.2021.10.1.59] [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: 08/15/2020] [Revised: 10/01/2020] [Accepted: 10/07/2020] [Indexed: 12/02/2022] Open
Abstract
In the present research, we have evaluated the association between patterns of nutrient intake and obesity. The present cross-sectional study recruited 850 adults aged between 20–59 years old. Dietary intakes were assessed with three 24-hour recalls. As well, data on anthropometric measures were collected. General obesity was specified as body mass index ≥ 30 kg/m2. Factor analysis was conducted, and followed by a varimax rotation, was performed to extract major nutrient patterns. Our analysis identified three major nutrient patterns: The first nutrient pattern was characterized by the high consumption of saturated fatty acids (SFAs), protein, vitamins B1, B2, B6, B5, B3, B12, Zinc, and iron. The second nutrient pattern was rich in total fat, polyunsaturated fatty acids, monounsaturated fatty acids, SFAs, oleic acid, linolenic acid, zinc, vitamin E, α-tocopherol, and β-carotene. The third one was greatly loaded with protein, carbohydrate, potassium, magnesium, phosphorus, calcium, vitamin C, and folate. Women in the third quintile of the first pattern were less likely to be generally obese in the fully adjusted model (odds ratio, 0.44; 95% confidence interval, 0.25–0.75). None of the other nutrient patterns had a significant association with obesity, even after adjusting for confounders. Adherence to a nutrient pattern rich in water-soluble vitamins was significantly associated with a greater chance of general obesity among women. Further studies in other populations, along with future prospective studies, are required to confirm these findings.
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Affiliation(s)
- Mohammad Reza Amini
- Department of Clinical Nutrition, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 19839-63113, Iran
| | - Farhang Djafari
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
| | - Fatemeh Sheikhhossein
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
| | - Habib Yarizadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
| | - Sina Naghshi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
| | - Mahshid Shahavandi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
| | - Nastaran Payandeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
| | - Zahra Akbarzade
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
| | - Kurosh Djafarian
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
| | - Sakineh Shab-Bidar
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran 14167-53955, Iran
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9
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Maude H, Sanchez-Cabanillas C, Cebola I. Epigenetics of Hepatic Insulin Resistance. Front Endocrinol (Lausanne) 2021; 12:681356. [PMID: 34046015 PMCID: PMC8147868 DOI: 10.3389/fendo.2021.681356] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 04/20/2021] [Indexed: 01/14/2023] Open
Abstract
Insulin resistance (IR) is largely recognized as a unifying feature that underlies metabolic dysfunction. Both lifestyle and genetic factors contribute to IR. Work from recent years has demonstrated that the epigenome may constitute an interface where different signals may converge to promote IR gene expression programs. Here, we review the current knowledge of the role of epigenetics in hepatic IR, focusing on the roles of DNA methylation and histone post-translational modifications. We discuss the broad epigenetic changes observed in the insulin resistant liver and its associated pathophysiological states and leverage on the wealth of 'omics' studies performed to discuss efforts in pinpointing specific loci that are disrupted by these changes. We envision that future studies, with increased genomic resolution and larger cohorts, will further the identification of biomarkers of early onset hepatic IR and assist the development of targeted interventions. Furthermore, there is growing evidence to suggest that persistent epigenetic marks may be acquired over prolonged exposure to disease or deleterious exposures, highlighting the need for preventative medicine and long-term lifestyle adjustments to avoid irreversible or long-term alterations in gene expression.
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Affiliation(s)
| | | | - Inês Cebola
- *Correspondence: Hannah Maude, ; Inês Cebola,
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10
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Wu S, Deng H, He H, Xu R, Wang Y, Zhu X, Zhang J, Zeng Q, Zhao X. The circ_0004463/miR-380-3p/FOXO1 axis modulates mitochondrial respiration and bladder cancer cell apoptosis. Cell Cycle 2020; 19:3563-3580. [PMID: 33283616 DOI: 10.1080/15384101.2020.1852746] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Bladder cancer is one of the most commonly diagnosed and fatal malignancies of the urinary tract. Noncoding RNAs have been reported to be new biomarkers and effective treatment targets for bladder cancer. In the present study, we identified a novel bladder cancer-related circRNA-miRNA-mRNA network, the circ_0004463/miR-380-3p/FOXO1 axis. circ_0004463 is significantly downregulated, whereas miR-380-3p is upregulated in bladder carcinoma tissue samples and cells. circ_0004463 acts as a tumor suppressor by inhibiting bladder cancer cell proliferation. Genes that negatively correlated with miR-380-3p and genes that miR-380-3p might target are enriched in mitochondrial respiration chain-related pathways. miR-380-3p promotes the proliferation of bladder cancer cells and mitochondrial respiration by acting as an oncogenic miRNA. circ_0004463 competes with FOXO1 for miR-380-3p binding to counteract miR-380-3p-mediated repression of FOXO1. Circ_0004463 overexpression inhibits cancer cell proliferation and mitochondrial respiration in bladder cancer cell lines, while miR-380-3p overexpression dramatically reverses the roles of circ_0004463 overexpression. In conclusion, the circ_0004463/miR-380-3p/FOXO1 axis could regulate mitochondrial respiration and bladder cancer cell apoptosis via FOXO1 signaling.
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Affiliation(s)
- Shuiqing Wu
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
| | - Huanghao Deng
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
| | - Haiqing He
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
| | - Ran Xu
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
| | - Yinhuai Wang
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
| | - Xuan Zhu
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
| | - Jinhua Zhang
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
| | - Qi Zeng
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
| | - Xiaokun Zhao
- Department of Urology, The Second Xiangya Hospital, Central South University , Changsha, Hunan Province, People's Republic of China
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11
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E L, Jiang H, Lu Z. MicroRNA-144 attenuates cardiac ischemia/reperfusion injury by targeting FOXO1. Exp Ther Med 2019; 17:2152-2160. [PMID: 30783480 PMCID: PMC6364149 DOI: 10.3892/etm.2019.7161] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 02/22/2018] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular ischemic disease refers to a large class of conditions that are harmful to human health. A number of previous studies have demonstrated that microRNAs (miRs) have notable roles in regulating cardiac injury. miR-144 is influential in the differentiation, growth, and metastatic processes of cells; however, the impact of miR-144 in cardiac ischemia/reperfusion (I/R) injury has not been thoroughly elucidated to date. In the present study, reverse transcription quantitative polymerase chain reaction was used to evaluate RNA expression. In addition, TTC staining was performed to detect the infarct area of the ischemic myocardia and a terminal deoxynucleotidyl-transferase-mediated dUTP nick end labeling assay was utilized to detect the apoptosis of the myocardia. It was observed that miR-144 expression is downregulated in an I/R model in rats and that overexpression of miR-144 significantly reduced myocardial ischemic injury and apoptosis. Consistent with this result, similar findings were demonstrated in H9c2 cells subjected to hypoxia/reoxygenation. Bioinformatic analysis using MiRanda and TargetScan, and luciferase assays confirmed that forkhead box protein O1was the target of miR-144. These findings suggest that miR-144 may be exploited as a novel molecular marker or therapeutic target for myocardial I/R injury.
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Affiliation(s)
- Lusha E
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei General Hospital, Wuchang, Wuhan, Hubei 430060, P.R. China.,Cardiology Department, Inner Mongolia People's Hospital, Hohhot, Inner Mongolia 001017, P.R. China
| | - Hong Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei General Hospital, Wuchang, Wuhan, Hubei 430060, P.R. China
| | - Zhibing Lu
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei General Hospital, Wuchang, Wuhan, Hubei 430060, P.R. China
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Luna RCP, Dos Santos Nunes MK, Monteiro MGCA, da Silva CSO, do Nascimento RAF, Lima RPA, Pimenta FCF, de Oliveira NFP, Persuhn DC, de Almeida ATC, da Silva Diniz A, Pissetti CW, Vianna RPT, de Lima Ferreira FEL, Rodrigues Gonçalves MDC, de Carvalho Costa MJ. α-Tocopherol influences glycaemic control and miR-9-3 DNA methylation in overweight and obese women under an energy-restricted diet: a randomized, double-blind, exploratory, controlled clinical trial. Nutr Metab (Lond) 2018; 15:49. [PMID: 30008789 PMCID: PMC6042339 DOI: 10.1186/s12986-018-0286-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 07/03/2018] [Indexed: 12/14/2022] Open
Abstract
Background Excess weight is a strong risk factor for the development of dysglycaemia. It has been suggested that changes in the metabolism microRNAs, small non-coding RNAs that regulate gene expression, could precede late glycaemic changes. Vitamin E in turn may exert important functions in methylation and gene expression processes. This study aimed to determine the effect of α-tocopherol on glycaemic variables and miR-9-1 and miR-9-3 promoter DNA methylation in overweight women. Methods A randomized, double-blind, exploratory, placebo-controlled study was conducted in overweight and obese adult women (n = 44) who ingested synthetic vitamin E (all-rac-α-tocopherol), natural source vitamin E (RRR-rac-α-tocopherol) or placebo capsules and were followed up for a period of 8 weeks. Supplemented groups also received dietary guidance for an energy-restricted diet. An additional group that received no supplementation and did not follow an energy-restricted diet was also followed up. The intervention effect was evaluated by DNA methylation levels (quantitative real-time PCR assay) and anthropometric and biochemical variables (fasting plasma glucose, haemoglobin A1C, insulin, and vitamin E). Results Increased methylation levels of the miR-9-3 promoter region (P < 0.001) and reduced haemoglobin A1C (P < 0.05) were observed in the natural source vitamin E group after intervention. Increased fasting plasma glucose was observed in the synthetic vitamin E group, despite the significant reduction of anthropometric variables compared to the other groups. Conclusions α-Tocopherol from natural sources increased methylation levels of the miR-9-3 promoter region and reduced haemoglobin A1C in overweight women following an energy-restricted diet. These results provide novel information about the influence of vitamin E on DNA methylation. Trial registration ClinicalTrials.gov, NCT02922491. Registered 4 October, 2016. Electronic supplementary material The online version of this article (10.1186/s12986-018-0286-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rafaella Cristhine Pordeus Luna
- 1Postgraduate in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil.,10Postgraduate in Nutrition Sciences, Health Sciences Center, Health and Nutrition Studies Interdisciplinary Center (NIESN), Federal University of Paraíba (Universidade Federal da Paraíba), Castelo Branco, João Pessoa, Paraíba 58051-900 Brazil
| | - Mayara Karla Dos Santos Nunes
- 2Postgraduate Program in Cellular and Molecular Biology, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58059-900 Brazil
| | - Mussara Gomes Cavalcante Alves Monteiro
- 1Postgraduate in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
| | - Cássia Surama Oliveira da Silva
- 3Health and Nutrition Studies Interdisciplinary Center, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
| | - Rayner Anderson Ferreira do Nascimento
- 2Postgraduate Program in Cellular and Molecular Biology, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58059-900 Brazil
| | - Raquel Patrícia Ataíde Lima
- 1Postgraduate in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
| | - Flávia Cristina Fernandes Pimenta
- 4Department of Internal Medicine, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
| | - Naila Francis Paulo de Oliveira
- 5Departament of Molecular Biology, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, 58059-900 Paraíba Brasil
| | - Darlene Camati Persuhn
- 1Postgraduate in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil.,2Postgraduate Program in Cellular and Molecular Biology, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58059-900 Brazil.,5Departament of Molecular Biology, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, 58059-900 Paraíba Brasil
| | - Aléssio Tony Cavalcanti de Almeida
- 6Department of Economics, Postgraduate Program in Applied Economics and Economics of the Public Sector, Center for Applied Social Sciences, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58059-900 Brazil
| | - Alcides da Silva Diniz
- 7Department of Nutrition, Graduate Program in Nutrition, Health Sciences Center, Federal University of Pernambuco, Recife, Pernambuco 50670901 Brazil
| | - Cristina Wide Pissetti
- 8Department of Obstetrics and Gynecology, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
| | - Rodrigo Pinheiro Toledo Vianna
- 9Department of Nutrition, Graduate Program in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
| | - Flavia Emília Leite de Lima Ferreira
- 9Department of Nutrition, Graduate Program in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
| | - Maria da Conceição Rodrigues Gonçalves
- 1Postgraduate in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil.,9Department of Nutrition, Graduate Program in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
| | - Maria José de Carvalho Costa
- 1Postgraduate in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil.,9Department of Nutrition, Graduate Program in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba (Universidade Federal da Paraíba), João Pessoa, Paraíba 58051-900 Brazil
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Yan C, Li J, Feng S, Li Y, Tan L. Long noncoding RNA Gomafu upregulates Foxo1 expression to promote hepatic insulin resistance by sponging miR-139-5p. Cell Death Dis 2018; 9:289. [PMID: 29459686 PMCID: PMC5833404 DOI: 10.1038/s41419-018-0321-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 01/01/2018] [Accepted: 01/15/2018] [Indexed: 01/14/2023]
Abstract
Long non-coding RNA Gomafu is involved in diabetes-related diseases. However, its role in insulin resistance (IR) remains unclear. Our objective is to explore the role of Gomafu in hepatic IR and glucose intolerance. Gomafu expression was determined in livers of ob/ob mice and high-fat diet (HFD) mice. The binding activity of NF-κB on the Gomafu promoter was measured by chromatin immunoprecipitation and quantitative real-time PCR assays. Increased Gomafu expression was observed in the livers of obese mice. Besides, the binding of NF-κB on the Gomafu promoter was also observed in hepatocytes from ob/ob mice. Further study showed that knockdown of NF-κB p65 alleviated the increase in hepatic Gomafu expression in vivo and in vitro. Knockdown of hepatic Gomafu inhibited hepatic glucose production (HGP) and improved insulin sensitivity in obese mice, whereas, overexpression of hepatic Gomafu resulted in an increase in random and fasting blood glucose levels in lean mice. In addition, we demonstrated that Gomafu functioned as miR-139 sponge and led to the de-repression of its target gene Foxo1, which played an important role in gluconeogenesis and HGP in hepatocytes. Finally, silenced Foxo1 expression abolished the effect of Gomafu overexpression on gluconeogenesis and glucose production in hepatocytes. Taken together, our data suggested that the increase in Gomafu expression contributed to hepatic IR in obese mice.
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Affiliation(s)
- Caifeng Yan
- Department of Endocrinology, Clinical Medical College of Yangzhou University, Yangzhou, China.
| | - Jin Li
- Department of Enphrology, Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Shangyong Feng
- Department of Endocrinology, Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Ying Li
- Department of Endocrinology, Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Lu Tan
- Department of Endocrinology, Clinical Medical College of Yangzhou University, Yangzhou, China
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Gao L, Cheng D, Yang J, Wu R, Li W, Kong AN. Sulforaphane epigenetically demethylates the CpG sites of the miR-9-3 promoter and reactivates miR-9-3 expression in human lung cancer A549 cells. J Nutr Biochem 2018. [PMID: 29525530 DOI: 10.1016/j.jnutbio.2018.01.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Increasing evidence suggests that epigenetic aberrations contribute to the development and progression of cancers such as lung cancer. The promoter region of miR-9-3 was recently found to be hypermethylated in lung cancer, resulting in down-regulation of miR-9-3 and poor patient prognosis. Sulforaphane (SFN), a natural compound that is obtained from cruciferous vegetables, has potent anticancer activities. In this study, we aimed to investigate the effect of SFN on restoring the miR-9-3 level in lung cancer A549 cells through epigenetic regulation. DNA methylation of the miR-9-3 promoter was examined using bisulfite genomic sequencing and methylated DNA immunoprecipitation analysis. The expression levels of miR-9-3 and several epigenetic modifying enzymes were measured using quantitative real-time polymerase chain reaction and Western blotting, respectively. The transcriptional activity of the miR-9-3 promoter was evaluated by patch methylation, and histone modifications were analyzed using chromatin immunoprecipitation (ChIP) assays. We found that CpG methylation was reduced in the miR-9-3 promoter and that miR-9-3 expression was increased after 5 days of treatment with SFN. In vitro methylation analysis showed that the methylated recombinant construct exhibited lower luciferase reporter activity than the unmethylated counterpart. ChIP assays revealed that SFN treatment increased H3K4me1 enrichment at the miR-9-3 promoter. Furthermore, SFN treatment attenuated enzymatic DNMT activity and DNMT3a, HDAC1, HDAC3, HDAC6 and CDH1 protein expression. Taken together, these findings indicate that SFN may exert its chemopreventive effects partly through epigenetic demethylation and restoration of miR-9-3.
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Affiliation(s)
- Linbo Gao
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - David Cheng
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; Graduate Program in Pharmaceutical Sciences, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Jie Yang
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Renyi Wu
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Wenji Li
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Ah-Ng Kong
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
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15
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The regulation of FOXO1 and its role in disease progression. Life Sci 2017; 193:124-131. [PMID: 29158051 DOI: 10.1016/j.lfs.2017.11.030] [Citation(s) in RCA: 206] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/14/2017] [Accepted: 11/16/2017] [Indexed: 12/27/2022]
Abstract
Cell proliferation, apoptosis, autophagy, oxidative stress and metabolic dysregulation are the basis of many diseases. Forkhead box transcription factor O1 (FOXO1) changes in response to cellular stimulation and maintains tissue homeostasis during the above-mentioned physiological and pathological processes. Substantial evidences indicate that FOXO1's function depends on the modulation of downstream targets such as apoptosis- and autophagy-associated genes, anti-oxidative stress enzymes, cell cycle arrest genes, and metabolic and immune regulators. In addition, oxidative stress, high glucose and other stimulations induce the regulation of FOXO1 activity via PI3k-Akt, JNK, CBP, Sirtuins, ubiquitin E3 ligases, etc., which mediate multiple signalling pathways. Subsequent post-transcriptional modifications, including phosphorylation, ubiquitination, acetylation, deacetylation, arginine methylation and O-GlcNAcylation, activate or inhibit FOXO1. The regulation of FOXO1 and its role might provide a significant avenue for the prevention and treatment of diseases. However, the subtle mechanisms of the post-transcriptional modifications and the effect of FOXO1 remain elusive and even conflicting in the development of many diseases. The determination of these questions potentially has implications for further research regarding FOXO1 signalling and the identification of targeted drugs.
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MicroRNAs as regulators and mediators of forkhead box transcription factors function in human cancers. Oncotarget 2017; 8:12433-12450. [PMID: 27999212 PMCID: PMC5355356 DOI: 10.18632/oncotarget.14015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 12/07/2016] [Indexed: 02/07/2023] Open
Abstract
Evidence has shown that microRNAs are widely implicated as indispensable components of tumor suppressive and oncogenic pathways in human cancers. Thus, identification of microRNA targets and their relevant pathways will contribute to the development of microRNA-based therapeutics. The forkhead box transcription factors regulate numerous processes including cell cycle progression, metabolism, metastasis and angiogenesis, thereby facilitating tumor initiation and progression. A complex network of protein and non-coding RNAs mediates the expression and activity of forkhead box transcription factors. In this review, we summarize the current knowledge and concepts concerning the involvement of microRNAs and forkhead box transcription factors and describe the roles of microRNAs-forkhead box axis in various disease states including tumor initiation and progression. Additionally, we describe some of the technical challenges in the use of the microRNA-forkhead box signaling pathway in cancer treatment.
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Role of microRNAs on adipogenesis, chronic low-grade inflammation, and insulin resistance in obesity. Nutrition 2017; 35:28-35. [DOI: 10.1016/j.nut.2016.10.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/24/2016] [Accepted: 10/03/2016] [Indexed: 12/11/2022]
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