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Quitete FT, Teixeira AVS, Peixoto TC, Martins BC, Atella GC, Resende ADC, Mucci DDB, Martins F, Daleprane JB. Long-term exposure to polychlorinated biphenyl 126 induces liver fibrosis and upregulates miR-155 and miR-34a in C57BL/6 mice. PLoS One 2024; 19:e0308334. [PMID: 39133714 PMCID: PMC11318903 DOI: 10.1371/journal.pone.0308334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 07/22/2024] [Indexed: 08/15/2024] Open
Abstract
Environmental pollutants, including polychlorinated biphenyls (PCBs), act as endocrine disruptors and impair various physiological processes. PCB 126 is associated with steatohepatitis, fibrosis, cirrhosis, and other hepatic injuries. These disorders can be regulated by microRNAs (miRNAs). Therefore, this study aimed to investigate the role of miRNAs in non-alcoholic fatty liver disease associated with exposure to PCB 126. Adult male C57BL/6 mice were exposed to PCB 126 (5 μmol/kg of body weight) for 10 weeks. The PCB group showed lipid accumulation in the liver in the presence of macro- and microvesicular steatosis and fibrosis with increased inflammatory and profibrotic gene expression, consistent with non-alcoholic steatohepatitis (NASH). PCB exposure also upregulated miR-155 and miR-34a, which induce the expression of proinflammatory cytokines and inflammation in the liver and reduce the expression of peroxisome proliferator-activated receptor α, which, in turn, impairs lipid oxidation and hepatic steatosis. Therefore, the present study showed that PCB 126 induced NASH via potential mechanisms involving miR-155 and miR-34a, which may contribute to the development of new diagnostic markers and therapeutic strategies.
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Affiliation(s)
- Fernanda Torres Quitete
- Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | | | - Thamara Cherem Peixoto
- Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Bruna Cadete Martins
- Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Geórgia Correa Atella
- Medical Biochemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Daniela de Barros Mucci
- Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Fabiane Martins
- Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro, Brazil
- Department of Morphology, Federal University of Rio Grande do Norte, Rio Grande do Norte, Brazil
| | - Julio Beltrame Daleprane
- Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro, Brazil
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Bartiromo M, Nardolillo M, Ferrara S, Russo G, Miraglia Del Giudice E, Di Sessa A. The challenging role of micro-RNAs in non-alcoholic fatty liver disease in children with obesity: is it time for a new era? Expert Rev Gastroenterol Hepatol 2023; 17:817-824. [PMID: 37497846 DOI: 10.1080/17474124.2023.2242245] [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: 11/19/2022] [Revised: 07/04/2023] [Accepted: 07/26/2023] [Indexed: 07/28/2023]
Abstract
INTRODUCTION As the pediatric obesity epidemic, nonalcoholic fatty liver disease (NAFLD) has become the most common chronic liver disease in childhood. Pediatric NAFLD pathophysiology is tangled and still unclear, but insulin resistance (IR), genetics, epigenetics, oxidative stress, and inflammation act as key players. Due to the increased cardiometabolic risk of these patients, several biomarkers have been proposed for early NAFLD identification, but their clinical utility is poor. Recently, hepatic dysregulation of microRNAs (miRNAs) has been linked to metabolic dysfunction, which in turn implied in NAFLD development. Evidence on the intriguing role of miRNAs in NAFLD pathogenesis has emerging especially in at-risk children such as those with obesity. However, pediatric evidence supporting their potential use as early noninvasive NAFLD tools is still limited but promising. AREAS COVERED We provided an overview on the emerging role of miRNAs in pediatric NAFLD by addressing some issues regarding their pathophysiological link with the metabolic milieu and their role as reliable NAFLD markers in children with obesity. EXPERT OPINION Strong evidence supports a potential role of miRNAs as early biomarkers of NAFLD in children with obesity. They might represent a valid diagnostic and targeted therapeutic tool due to its close pathogenic link with the metabolic milieu.
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Affiliation(s)
- Mario Bartiromo
- Department of Woman, Child, and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Michele Nardolillo
- Department of Woman, Child, and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Serena Ferrara
- Department of Woman, Child, and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giuseppina Russo
- Department of Woman, Child, and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Emanuele Miraglia Del Giudice
- Department of Woman, Child, and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Anna Di Sessa
- Department of Woman, Child, and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
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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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Ahrodia T, Kandiyal B, Das B. Microbiota and epigenetics: Health impact. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 198:93-117. [PMID: 37225326 DOI: 10.1016/bs.pmbts.2023.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Epigenetic changes associated with disease development and progressions are of increasing importance because of their potential diagnostic and therapeutic applications. Several epigenetic changes associated with chronic metabolic disorders have been studied in various diseases. Epigenetic changes are mostly modulated by environmental factors, including the human microbiota living in different parts of our bodies. The microbial structural components and the microbially derived metabolites directly interact with host cells, thereby maintaining homeostasis. Microbiome dysbiosis, on the other hand, is known to produce elevated levels of disease-linked metabolites, which may directly affect a host metabolic pathway or induce epigenetic changes that can lead to disease development. Despite their important role in host physiology and signal transduction, there has been little research into the mechanics and pathways associated with epigenetic modifications. This chapter focuses on the relationship between microbes and their epigenetic effects in diseased pathology, as well as on the regulation and metabolism of the dietary options available to the microbes. Furthermore, this chapter also provides a prospective link between these two important phenomena, termed "Microbiome and Epigenetics."
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Affiliation(s)
- Taruna Ahrodia
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India
| | - Bharti Kandiyal
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India
| | - Bhabatosh Das
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India.
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Wang J, Qin T, Sun J, Li S, Cao L, Lu X. Non-invasive methods to evaluate liver fibrosis in patients with non-alcoholic fatty liver disease. Front Physiol 2022; 13:1046497. [PMID: 36589424 PMCID: PMC9794751 DOI: 10.3389/fphys.2022.1046497] [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: 09/16/2022] [Accepted: 11/15/2022] [Indexed: 12/15/2022] Open
Abstract
Non-alcoholic Fatty Liver Disease (NAFLD) is a chronic liver disease that is strongly related to insulin resistance and metabolic syndrome, and it has become the most common liver disorder in developed countries. NAFLD embraces the full pathological process of three conditions: steatosis, non-alcoholic steatohepatitis, and finally, cirrhosis. As NAFLD progresses, symptoms will become increasingly severe as fibrosis develops. Therefore, evaluating the fibrosis stage is crucial for patients with NAFLD. A liver biopsy is currently considered the gold standard for staging fibrosis. However, due to the limitations of liver biopsy, non-invasive alternatives were extensively studied and validated in patients with NAFLD. The advantages of non-invasive methods include their high safety and convenience compared with other invasive approaches. This review introduces the non-invasive methods, summarizes their benefits and limitations, and assesses their diagnostic performance for NAFLD-induced fibrosis.
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Affiliation(s)
- Jincheng Wang
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tao Qin
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jinyu Sun
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shiwu Li
- Liver Disease Center, Qinhuangdao Third Hospital, Qinhuangdao, China
| | - Lihua Cao
- Liver Disease Center, Qinhuangdao Third Hospital, Qinhuangdao, China,*Correspondence: Xiaojie Lu, ; Lihua Cao,
| | - Xiaojie Lu
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China,*Correspondence: Xiaojie Lu, ; Lihua Cao,
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Zhang YH, Xie HL, Yang YW, Wen J, Liu RR, Zhao GP, Tan XD, Liu Z, Zheng Y, Zhang JB. miR-375 upregulates lipid metabolism and inhibits cell proliferation involved in chicken fatty liver formation and inheritance via targeting recombination signal binding protein for immunoglobulin kappa J region (RBPJ). Poult Sci 2022; 102:102218. [PMID: 36410068 PMCID: PMC9678763 DOI: 10.1016/j.psj.2022.102218] [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: 11/02/2021] [Revised: 08/17/2022] [Accepted: 09/29/2022] [Indexed: 11/19/2022] Open
Abstract
Poultry is susceptible to fatty liver which lead to decrease egg production and increase mortality. But the potential molecular mechanisms remain largely unclear. In the current study, in combination with transcriptome sequencing and miRNA sequencing data analysis from F1 generation of the normal liver and fatty liver tissues, the differentially expressed miR-375 and its target gene RBPJ were screened and verified. The expression levels of miR-375 and RBPJ gene in the liver between control and fatty liver groups of F0-F3 generation for Jingxing-Huang (JXH) chicken are different significantly (P < 0.05 or P < 0.01). And downregulated RBPJ expression can promote TG content and lipid droplets in primary hepatocytes cultured in vitro (P < 0.01). Cell proliferation-related genes, including PMP22, IGF-1, IGF-2, and IGFBP-5, increased or decreased significantly after overexpression or knock-down RBPJ (P < 0.05 or P < 0.01), respectively. This study uniquely revealed that miR-375 induced lipid synthesis and inhibited cell proliferation may partly due to regulation of RBPJ expression, thereby involving in fatty liver formation and inheritance in chicken. The results could be useful in identifying candidate genes and revealing the pathogenesis of fatty liver that may be used for disease-resistance selective breeding in chicken.
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Affiliation(s)
- Yong-Hong Zhang
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Heng-Li Xie
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Yu-Wei Yang
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Jie Wen
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Ran-Ran Liu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Gui-Ping Zhao
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Xiao-Dong Tan
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Zhen Liu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Yi Zheng
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Jia-Bao Zhang
- College of Animal Science, Jilin University, Changchun 130062, P. R. China,Corresponding author:
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NAFLD: Mechanisms, Treatments, and Biomarkers. Biomolecules 2022; 12:biom12060824. [PMID: 35740949 PMCID: PMC9221336 DOI: 10.3390/biom12060824] [Citation(s) in RCA: 123] [Impact Index Per Article: 61.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 02/07/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD), recently renamed metabolic-associated fatty liver disease (MAFLD), is one of the most common causes of liver diseases worldwide. NAFLD is growing in parallel with the obesity epidemic. No pharmacological treatment is available to treat NAFLD, specifically. The reason might be that NAFLD is a multi-factorial disease with an incomplete understanding of the mechanisms involved, an absence of accurate and inexpensive imaging tools, and lack of adequate non-invasive biomarkers. NAFLD consists of the accumulation of excess lipids in the liver, causing lipotoxicity that might progress to metabolic-associated steatohepatitis (NASH), liver fibrosis, and hepatocellular carcinoma. The mechanisms for the pathogenesis of NAFLD, current interventions in the management of the disease, and the role of sirtuins as potential targets for treatment are discussed here. In addition, the current diagnostic tools, and the role of non-coding RNAs as emerging diagnostic biomarkers are summarized. The availability of non-invasive biomarkers, and accurate and inexpensive non-invasive diagnosis tools are crucial in the detection of the early signs in the progression of NAFLD. This will expedite clinical trials and the validation of the emerging therapeutic treatments.
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8
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Ma C, Wang C, Zhang Y, Zhou H, Li Y. Potential Natural Compounds for the Prevention and Treatment of Nonalcoholic Fatty Liver Disease: A Review on Molecular Mechanisms. Curr Mol Pharmacol 2021; 15:846-861. [PMID: 34923950 DOI: 10.2174/1874467215666211217120448] [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: 07/14/2021] [Revised: 09/27/2021] [Accepted: 10/08/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Nonalcoholic fatty liver disease (NAFLD) is a kind of metabolic stress-induced liver injury closely related to insulin resistance and genetic susceptibility, and there is no specific drug for its clinical treatment currently. In recent years, a large amount of literature has reported that many natural compounds extracted from traditional Chinese medicine (TCM) can improve NAFLD through various mechanisms. According to the latest reports, some emerging natural compounds have shown great potential to improve NAFLD but are seldom used clinically due to the lacking special research. PURPOSE This paper aims to summarize the molecular mechanisms of the potential natural compounds on improving NAFLD, thus providing a direction and basis for further research on the pathogenesis of NAFLD and the development of effective drugs for the prevention and treatment of NAFLD. METHODS By searching various online databases, such as Web of Science, SciFinder, PubMed, and CNKI, NAFLD and these natural compounds were used as the keywords for detailed literature retrieval. RESULTS The pathogenesis of NAFLD and the molecular mechanisms of the potential natural compounds on improving NAFLD have been reviewed. CONCLUSION Many natural compounds from traditional Chinese medicine have a good prospect in the treatment of NAFLD, which can serve as a direction for the development of anti-NAFLD drugs in the future.
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Affiliation(s)
- Cheng Ma
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Cheng Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yafang Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Honglin Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yunxia Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
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9
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López-Sánchez GN, Dóminguez-Pérez M, Uribe M, Chávez-Tapia NC, Nuño-Lámbarri N. Non-alcoholic fatty liver disease and microRNAs expression, how it affects the development and progression of the disease. Ann Hepatol 2021; 21:100212. [PMID: 32533953 DOI: 10.1016/j.aohep.2020.04.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 02/07/2023]
Abstract
The obesity pandemic that affects the global population generates one of the most unfavorable microenvironmental conditions in the hepatocyte, which triggers the metabolic hepatopathy known as non-alcoholic fatty liver; its annual rates increase in its prevalence and does not seem to improve in the future. The international consortia, LITMUS by the European Union and NIMBLE by the United States of America, have started a race for the development of hepatic steatosis and steatohepatitis reliable biomarkers to have an adequate diagnosis. MicroRNAs have been proposed as diagnostic and prognostic biomarkers involved in adaptation to changes in the liver microenvironment, which could improve clinical intervention strategies in patients with hepatic steatosis.
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Affiliation(s)
- Guillermo Nahúm López-Sánchez
- Traslational Research Unit, Medica Sur Clinic & Foundation, Puente de Piedra 150, Toriello Guerra, Tlalpan, Z.C. 14050 Mexico City, Mexico
| | - Mayra Dóminguez-Pérez
- Genomics of Cardiovascular Diseases Laboratory, National Institute of Genomic Medicine, Periferico Sur 4809, Arenal Tepepan, Tlalpan, Z.C. 14610 Mexico City, Mexico
| | - Misael Uribe
- Obesity and Digestive Diseases Unit, Medica Sur Clinic & Foundation, Puente de Piedra 150, Toriello Guerra, Tlalpan, Z.C. 14050 Mexico City, Mexico
| | - Norberto Carlos Chávez-Tapia
- Traslational Research Unit, Medica Sur Clinic & Foundation, Puente de Piedra 150, Toriello Guerra, Tlalpan, Z.C. 14050 Mexico City, Mexico; Obesity and Digestive Diseases Unit, Medica Sur Clinic & Foundation, Puente de Piedra 150, Toriello Guerra, Tlalpan, Z.C. 14050 Mexico City, Mexico
| | - Natalia Nuño-Lámbarri
- Traslational Research Unit, Medica Sur Clinic & Foundation, Puente de Piedra 150, Toriello Guerra, Tlalpan, Z.C. 14050 Mexico City, Mexico.
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Dongiovanni P, Meroni M, Longo M, Fargion S, Fracanzani AL. Genetics, Immunity and Nutrition Boost the Switching from NASH to HCC. Biomedicines 2021; 9:1524. [PMID: 34829753 PMCID: PMC8614742 DOI: 10.3390/biomedicines9111524] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 12/12/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the leading contributor to the global burden of chronic liver diseases. The phenotypic umbrella of NAFLD spans from simple and reversible steatosis to nonalcoholic steatohepatitis (NASH), which may worsen into cirrhosis and hepatocellular carcinoma (HCC). Notwithstanding, HCC may develop also in the absence of advanced fibrosis, causing a delayed time in diagnosis as a consequence of the lack of HCC screening in these patients. The precise event cascade that may precipitate NASH into HCC is intricate and it entails diverse triggers, encompassing exaggerated immune response, endoplasmic reticulum (ER) and oxidative stress, organelle derangement and DNA aberrancies. All these events may be accelerated by both genetic and environmental factors. On one side, common and rare inherited variations that affect hepatic lipid remodeling, immune microenvironment and cell survival may boost the switching from steatohepatitis to liver cancer, on the other, diet-induced dysbiosis as well as nutritional and behavioral habits may furtherly precipitate tumor onset. Therefore, dietary and lifestyle interventions aimed to restore patients' health contribute to counteract NASH progression towards HCC. Even more, the combination of therapeutic strategies with dietary advice may maximize benefits, with the pursuit to improve liver function and prolong survival.
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Affiliation(s)
- Paola Dongiovanni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, 20122 Milan, Italy; (M.M.); (M.L.); (S.F.); (A.L.F.)
| | - Marica Meroni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, 20122 Milan, Italy; (M.M.); (M.L.); (S.F.); (A.L.F.)
| | - Miriam Longo
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, 20122 Milan, Italy; (M.M.); (M.L.); (S.F.); (A.L.F.)
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy
| | - Silvia Fargion
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, 20122 Milan, Italy; (M.M.); (M.L.); (S.F.); (A.L.F.)
| | - Anna Ludovica Fracanzani
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, 20122 Milan, Italy; (M.M.); (M.L.); (S.F.); (A.L.F.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
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11
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Nayor M, Shah SH, Murthy V, Shah RV. Molecular Aspects of Lifestyle and Environmental Effects in Patients With Diabetes: JACC Focus Seminar. J Am Coll Cardiol 2021; 78:481-495. [PMID: 34325838 DOI: 10.1016/j.jacc.2021.02.070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/07/2021] [Accepted: 02/01/2021] [Indexed: 01/04/2023]
Abstract
Diabetes is characterized as an integrated condition of dysregulated metabolism across multiple tissues, with well-established consequences on the cardiovascular system. Recent advances in precision phenotyping in biofluids and tissues in large human observational and interventional studies have afforded a unique opportunity to translate seminal findings in models and cellular systems to patients at risk for diabetes and its complications. Specifically, techniques to assay metabolites, proteins, and transcripts, alongside more recent assessment of the gut microbiome, underscore the complexity of diabetes in patients, suggesting avenues for precision phenotyping of risk, response to intervention, and potentially novel therapies. In addition, the influence of external factors and inputs (eg, activity, diet, medical therapies) on each domain of molecular characterization has gained prominence toward better understanding their role in prevention. Here, the authors provide a broad overview of the role of several of these molecular domains in human translational investigation in diabetes.
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Affiliation(s)
- Matthew Nayor
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. https://twitter.com/MattNayor
| | - Svati H Shah
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA; Division of Cardiology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA. https://twitter.com/SvatiShah
| | - Venkatesh Murthy
- Division of Cardiovascular Medicine, Department of Medicine, University of Michigan, Ann Arbor, Michigan, USA; Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan, USA. https://twitter.com/venkmurthy
| | - Ravi V Shah
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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12
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Hegazy MA, Abd ALgwad I, Abuel Fadl S, Sayed Hassan M, Ahmed Rashed L, Hussein MA. Serum Micro-RNA-122 Level as a Simple Noninvasive Marker of MAFLD Severity. Diabetes Metab Syndr Obes 2021; 14:2247-2254. [PMID: 34040409 PMCID: PMC8142686 DOI: 10.2147/dmso.s291595] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/19/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Metabolic-associated fatty liver disease (MAFLD) is a common disease worldwide. Micro-RNA-122 is known to be the most abundant micro-RNA expressed in the liver. OBJECTIVE To evaluate the association of micro-RNA-122 and the degree of steatosis and fibrosis in obese patients with MAFLD. METHODS The study included 120 obese Egyptian patients with MAFLD, which were diagnosed and classified according to ultra-sonographic liver findings. All patients enrolled in the study were subjected to thorough clinical examination and laboratory investigations (serum micro-RNA-122 levels by PCR, lipid profile, liver biochemistry, and functions). Fibro-scan was used to assess the level of fibrosis. RESULTS There was a significant increase in levels of micro-RNA-122 in obese patients with MAFLD compared to controls (p<0.001). Micro-RNA-122 level was lower in patients with mild liver steatosis than patients with moderate or severe steatosis (p<0.001). It was lower in patients with a mild degree of fibrosis than those with mild or moderate fibrosis (p<0.001). Micro-RNA-122 was significantly positively correlated with low-density cholesterol and triglycerides level, and liver enzymes, and negatively correlated to high-density cholesterol (p<0.001). CONCLUSION Serum micro-RNA-122 could be a useful predictor of assessing MAFLD severity regarding level of steatosis or fibrosis.
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Affiliation(s)
- Mona A Hegazy
- Internal Medicine Department, Kasr Al-Aini Hospitals, Cairo University, Cairo, Egypt
| | - Ibrahim Abd ALgwad
- Internal Medicine Department, Kasr Al-Aini Hospitals, Cairo University, Cairo, Egypt
| | - Soheir Abuel Fadl
- Internal Medicine Department, Kasr Al-Aini Hospitals, Cairo University, Cairo, Egypt
| | - Mohamed Sayed Hassan
- Internal Medicine Department, Kasr Al-Aini Hospitals, Cairo University, Cairo, Egypt
| | - Laila Ahmed Rashed
- Biochemistry Department, Kasr Al-Aini Hospitals, Cairo University, Cairo, Egypt
| | - Maha A Hussein
- Internal Medicine Department, Kasr Al-Aini Hospitals, Cairo University, Cairo, Egypt
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Abstract
Non-Alcoholic Fatty Liver Disease (NAFLD) is caused by the accumulation of fat in over 5% of hepatocytes in the absence of alcohol consumption. NAFLD is considered the hepatic manifestation of metabolic syndrome (MS). Recently, an expert consensus suggested as more appropriate the term MAFLD (metabolic-associated fatty liver disease). Insulin resistance (IR) plays a key role in the development of NAFLD, as it causes an increase in hepatic lipogenesis and an inhibition of adipose tissue lipolysis. Beyond the imbalance of adipokine levels, the increase in the mass of visceral adipose tissue also determines an increase in free fatty acid (FFA) levels. In turn, an excess of FFA is able to determine IR through the inhibition of the post-receptor insulin signal. Adipocytes secrete chemokines, which are able to enroll macrophages inside the adipose tissue, responsible, in turn, for the increased levels of TNF-α. The latter, as well as resistin and other pro-inflammatory cytokines such as IL-6, enhances insulin resistance and correlates with endothelial dysfunction and an increased cardiovascular (CV) risk. In this review, the role of diet, intestinal microbiota, genetic and epigenetic factors, low-degree chronic systemic inflammation, mitochondrial dysfunction, and endoplasmic reticulum stress on NAFLD have been addressed. Finally, the clinical impact of NAFLD on cardiovascular and renal outcomes, and its direct link with type 2 diabetes have been discussed.
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Botello-Manilla AE, Chávez-Tapia NC, Uribe M, Nuño-Lámbarri N. Genetics and epigenetics purpose in nonalcoholic fatty liver disease. Expert Rev Gastroenterol Hepatol 2020; 14:733-748. [PMID: 32552211 DOI: 10.1080/17474124.2020.1780915] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION nonalcoholic fatty liver disease (NAFLD) comprises a broad spectrum of diseases, which can progress from benign steatosis to nonalcoholic steatohepatitis, liver cirrhosis and hepatocellular carcinoma. NAFLD is the most common chronic liver disease in developed countries, affecting approximately 25% of the general population. Insulin resistance, adipose tissue dysfunction, mitochondrial and endoplasmic reticulum stress, chronic inflammation, genetic and epigenetic factors are NAFLD triggers that control the disease susceptibility and progression. AREAS COVERED In recent years a large number of investigations have been carried out to elucidate genetic and epigenetic factors in the disease pathogenesis, as well as the search for diagnostic markers and therapeutic targets. This paper objective is to report the most studied genetic and epigenetic variants around NAFLD. EXPERT OPINION NAFLD lead to various comorbidities, which have a considerable impact on the patient wellness and life quality, as well as on the costs they generate for the country's health services. It is essential to continue with molecular research, since it could be used as a clinical tool for prognosis and disease severity. Specifically, in the field of hepatology, plasma miRNAs could provide a novel tool in liver diseases diagnosis and monitoring, representing an alternative to invasive diagnostic procedures.
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Affiliation(s)
| | - Norberto Carlos Chávez-Tapia
- Traslational Research Unit, Médica Sur Clinic & Foundation , Mexico City, Mexico.,Obesity and Digestive Diseases Unit, Médica Sur Clinic & Foundation , Mexico City, Mexico
| | - Misael Uribe
- Obesity and Digestive Diseases Unit, Médica Sur Clinic & Foundation , Mexico City, Mexico
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15
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Kalaki-Jouybari F, Shanaki M, Delfan M, Gorgani-Firouzjae S, Khakdan S. High-intensity interval training (HIIT) alleviated NAFLD feature via miR-122 induction in liver of high-fat high-fructose diet induced diabetic rats. Arch Physiol Biochem 2020; 126:242-249. [PMID: 30318957 DOI: 10.1080/13813455.2018.1510968] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background: Exercise intervention is strongly recommended to manage metabolic diseases. In this study, we investigate, whether HIIT and CET can induce hepatic miR-122 expression, NAFLD rats with diabetes.Methods: 40 Wistar rats divided into 2 groups, non-diabetic (NDC) and diabetic .Type 2 diabetes was induced by high-fat high-fructose diet (HFHFD). Then diabetic rats were subdivided into three groups: diabetic control (HFHFD + DC), CET (HFHFD + CET), and HIIT (HFHFD + HIIT). After eight weeks of exercise on a rodent treadmill, we measured miR-122 and its target genes expression in the liver of rats.Results: HIIT decreased the expression of FAS, ACC, SREBP-1c compared with HFHFD + DC (p = .004, p = .032, p = .043, respectively), and could partially increase miR-122 expression as compared with HFHFD + DC (26.8%, p = .68).Conclusions: Exercise training could be a non-pharmacological intervention for improvement of NAFLD of diabetic rats by induction of miR-122. HIIT had a greater effect on NAFLD amelioration than CET.
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Affiliation(s)
- Fatemeh Kalaki-Jouybari
- Department of Medical Laboratory Sciences, School of Allied Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehrnoosh Shanaki
- Department of Medical Laboratory Sciences, School of Allied Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Delfan
- Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Alzahra University, Tehran, Iran
| | - Sattar Gorgani-Firouzjae
- Department of Medical Laboratory Sciences, School of Allied Health Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Soheyla Khakdan
- Department of Medical Laboratory Sciences, School of Allied Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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16
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The role of genetic and epigenetic factors in non alcoholic fatty liver disease (NAFLD) pathogenesis. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100647] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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17
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Meroni M, Longo M, Rustichelli A, Dongiovanni P. Nutrition and Genetics in NAFLD: The Perfect Binomium. Int J Mol Sci 2020; 21:ijms21082986. [PMID: 32340286 PMCID: PMC7215858 DOI: 10.3390/ijms21082986] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/19/2020] [Accepted: 04/21/2020] [Indexed: 02/06/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) represents a global healthcare burden since it is epidemiologically related to obesity, type 2 diabetes (T2D) and Metabolic Syndrome (MetS). It embraces a wide spectrum of hepatic injuries, which include simple steatosis, nonalcoholic steatohepatitis (NASH), fibrosis, cirrhosis and hepatocellular carcinoma (HCC). The susceptibility to develop NAFLD is highly variable and it is influenced by several cues including environmental (i.e., dietary habits and physical activity) and inherited (i.e., genetic/epigenetic) risk factors. Nonetheless, even intestinal microbiota and its by-products play a crucial role in NAFLD pathophysiology. The interaction of dietary exposure with the genome is referred to as 'nutritional genomics,' which encompasses both 'nutrigenetics' and 'nutriepigenomics.' It is focused on revealing the biological mechanisms that entail both the acute and persistent genome-nutrient interactions that influence health and it may represent a promising field of study to improve both clinical and health nutrition practices. Thus, the premise of this review is to discuss the relevance of personalized nutritional advices as a novel therapeutic approach in NAFLD tailored management.
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Affiliation(s)
- Marica Meroni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, via F Sforza 35, 20122 Milan, Italy; (M.M.); (M.L.); (A.R.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milano, Italy
| | - Miriam Longo
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, via F Sforza 35, 20122 Milan, Italy; (M.M.); (M.L.); (A.R.)
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milano, Italy
| | - Alice Rustichelli
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, via F Sforza 35, 20122 Milan, Italy; (M.M.); (M.L.); (A.R.)
| | - Paola Dongiovanni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, via F Sforza 35, 20122 Milan, Italy; (M.M.); (M.L.); (A.R.)
- Correspondence: ; Tel.: +39-02-5503-3467; Fax: +39-02-5503-4229
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Wang G, Zou H, Lai C, Huang X, Yao Y, Xiang G. Repression of MicroRNA-124-3p Alleviates High-Fat Diet-Induced Hepatosteatosis by Targeting Pref-1. Front Endocrinol (Lausanne) 2020; 11:589994. [PMID: 33324345 PMCID: PMC7726416 DOI: 10.3389/fendo.2020.589994] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/28/2020] [Indexed: 12/25/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the common disease in the liver, which is associated with metabolic syndrome and hepatocellular carcinoma. Accumulated evidence establishes that small non-coding microRNAs (miRNAs) contribute to the initiation and progression of NAFLD. However, the molecular repertoire of miRNA in NAFLD is still largely unknown. Here, using an integrative approach spanning bioinformatic analysis and functional approaches, we demonstrate that miR-124-3p participates in the development of NAFLD by directly targeting preadipocyte factor-1 (Pref-1). In response to high-fat diet (HFD), expression of miR-124-3p was increased in the liver. Inhibition of miR-124-3p expression led to a dramatic reduction of triglyceride contents in hepatocytes, in parallel with decreased inflammatory factors. Mechanistically, miR-124-3p directly controls the transcription of Pref-1, a secretory factor that has been proved to resist metabolic syndrome. Our work identifies a novel molecular axis in hepatosteatosis, and highlights miR-124-3p/Pref-1 as potential targets for clinical interventions of NAFLD.
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Affiliation(s)
| | | | | | | | - Yutong Yao
- *Correspondence: Yutong Yao, ; Guangming Xiang,
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19
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mir-101-3p Downregulation Promotes Fibrogenesis by Facilitating Hepatic Stellate Cell Transdifferentiation During Insulin Resistance. Nutrients 2019; 11:nu11112597. [PMID: 31671785 PMCID: PMC6893471 DOI: 10.3390/nu11112597] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 12/15/2022] Open
Abstract
Insulin resistance (IR) and microRNAs (miRNAs), which regulate cell-to-cell communication between hepatocytes and hepatic stellate cells (HSCs), may intertwine in nonalcoholic fatty liver disease (NAFLD) pathogenesis. The aim of this study was to evaluate whether epigenetics and environmental factors interact to promote progressive NAFLD during IR. We examined the miRNA signature in insulin receptor haploinsufficient (InsR+/−) and wild-type (wt) HSCs by RNAseq (n = 4 per group). Then, we evaluated their impact in an IR-NASH (nonalcoholic steatohepatitis) model (InsR+/− mice fed standard or methionine choline deficient (MCD) diet, n = 10 per group) and in vitro. InsR+/− HSCs displayed 36 differentially expressed miRNAs (p < 0.05 vs. wt), whose expression was then analyzed in the liver of InsR+/− mice fed an MCD diet. We found that miR-101-3p negatively associated with both InsR+/− genotype and MCD (p < 0.05) and the histological spectrum of liver damage (p < 0.01). miR-101-3p was reduced in InsR+/− hepatocytes and HSCs and even more in InsR+/− cells exposed to insulin (0.33 µM) and fatty acids (0.25 mM), resembling the IR-NASH model. Conversely, insulin induced miR-101-3p expression in wt cells but not in InsR+/− ones (p < 0.05). In conclusion, IR combined with diet-induced liver injury favors miR-101-3p downregulation, which may promote progressive NAFLD through HSC and hepatocyte transdifferentiation and proliferation.
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20
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Liu F, Chen Q, Chen F, Wang J, Gong R, He B. The lncRNA ENST00000608794 acts as a competing endogenous RNA to regulate PDK4 expression by sponging miR-15b-5p in dexamethasone induced steatosis. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1449-1457. [PMID: 31330194 DOI: 10.1016/j.bbalip.2019.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 06/30/2019] [Accepted: 07/09/2019] [Indexed: 12/31/2022]
Abstract
The contribution of ncRNAs, especially long non-coding RNAs (lncRNAs) to drug induced steatosis remains largely unknown. The aim of this study was to investigate the role of lncRNA ENST00000608794 in dexamethasone induced steatosis. We found that ENST00000608794 is expressed at higher levels in dexamethasone treated HepG2 cell, and ENST00000608794 can bind and be regulated by miR-15b-5p. Ectopic expression of ENST00000608794 enhanced steatosis and the protein expression of PDK4 which is a critical gene in lipid metabolism and also is a target of miR-15b-5p. However, the differentiated PDK4 expression between control and ectopic expression of ENST00000608794 was absence in the presence of miR-15b-5p inhibitor. Moreover, in dexamethasone treated HepG2 cell lines, ENST00000608794 increased whether with miR-15b-5p inhibitor treatment or not, while increase of PDK4 expression by dexamethasone was greatly compromised in the presence of miR-15b-5p mimic. Meanwhile, dexamethasone induced steatosis could be ameliorated by silencing ENST00000608794 or expressing miR-15b-5p. Taken together, the results suggested that ENST00000608794 plays an important role in dexamethasone induced steatosis, which was partly mediated by derepressing of PDK4 through competitively binding to miR-15b-5p.
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Affiliation(s)
- Fengqiong Liu
- Fujian Provincial Key Laboratory of Environment Factors and Cancer, School of Public Health, Fujian Medical University, Fujian, China
| | - Qing Chen
- Fujian Provincial Key Laboratory of Environment Factors and Cancer, School of Public Health, Fujian Medical University, Fujian, China
| | - Fa Chen
- Fujian Provincial Key Laboratory of Environment Factors and Cancer, School of Public Health, Fujian Medical University, Fujian, China
| | - Jing Wang
- Laboratory Center, The Major Subject of Environment and Health of Fujian Key Universities, School of Public Health, Fujian Medical University, Fujian, China
| | - Ruijie Gong
- Fujian Provincial Key Laboratory of Environment Factors and Cancer, School of Public Health, Fujian Medical University, Fujian, China
| | - Baochang He
- Fujian Provincial Key Laboratory of Environment Factors and Cancer, School of Public Health, Fujian Medical University, Fujian, China.
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miR-122 promotes hepatic lipogenesis via inhibiting the LKB1/AMPK pathway by targeting Sirt1 in non-alcoholic fatty liver disease. Mol Med 2019; 25:26. [PMID: 31195981 PMCID: PMC6567918 DOI: 10.1186/s10020-019-0085-2] [Citation(s) in RCA: 139] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 04/17/2019] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is a common hepatic disease with an increasing prevalence but an unclear aetiology. This study aimed to investigate the functional implications of microRNA-122 (miR-122) in the pathogenesis of NAFLD and the possible molecular mechanisms. METHODS Both in vitro and in vivo models of NAFLD were generated by treating HepG2 and Huh-7 cells with free fatty acids (FFA) and by feeding mice a high-fat diet (HFD), respectively. HE and Oil Red O staining were used to examine liver tissue morphology and lipid deposition, respectively. Immunohistochemical (IHC) staining was used to examine Sirt1 expression in liver tissues. qRT-PCR and Western blotting were employed to measure the expression of miR-122, Sirt1, and proteins involved in lipogenesis and the AMPK pathway. Enzyme-linked immunosorbent assay (ELISA) was used to quantify triglyceride (TG) levels in HepG2 and Huh-7 cells and in liver tissues. The interaction between miR-122 and the Sirt1 gene was further examined by a dual luciferase reporter assay and RNA-immunoprecipitation (RIP). RESULTS NAFLD hepatic tissues and FFA-treated HepG2 and Huh-7 cells presented excess lipid production and TG secretion, accompanied by miR-122 upregulation, Sirt1 downregulation, and potentiated lipogenesis-related genes. miR-122 suppressed Sirt1 expression via binding to its 3'-untranslated region (UTR). Knockdown of miR-122 effectively mitigated excessive lipid production and suppressed the expression of lipogenic genes in FFA-treated HepG2 and Huh-7 cells via upregulating Sirt1. Furthermore, miR-122 knockdown activated the LKB1/AMPK signalling pathway. CONCLUSION The inhibition of miR-122 protects hepatocytes from lipid metabolic disorders such as NAFLD and suppresses lipogenesis via elevating Sirt1 and activating the AMPK pathway. These data support miR-122 as a promising biomarker and drug target for NAFLD.
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Long noncoding RNA Mirt2 upregulates USP10 expression to suppress hepatic steatosis by sponging miR-34a-5p. Gene 2019; 700:139-148. [DOI: 10.1016/j.gene.2019.02.096] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 02/11/2019] [Accepted: 02/23/2019] [Indexed: 12/18/2022]
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Kook HY, Jin SH, Park PR, Lee SJ, Shin HJ, Kim TJ. Serum miR-214 as a novel biomarker for ankylosing spondylitis. Int J Rheum Dis 2019; 22:1196-1201. [PMID: 30729703 DOI: 10.1111/1756-185x.13475] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 12/24/2018] [Accepted: 12/26/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Serum microRNA (miR) in ankylosing spondylitis (AS) patients has been rarely identified. The objective of this study was to find AS-specific miR in sera of patients with AS. METHODS Total RNAs were isolated from whole sera of patients with AS, patients with rheumatoid arthritis (RA), and healthy controls (HC) using miRNeasy Serum/Plasma Kit. The presence of miR was assayed using Agilent 2100 Bioanalyzer Small RNA assay. Each RNA sample was used for miR microarray. To verify microarray results, candidate circulating miRs were validated by quantitative polymerase chain reaction (qPCR) using samples from patients with AS (n = 65), patients with RA (n = 25), and HCs (n = 39). Cycle threshold values were converted to copy numbers by drawing a standard curve using a synthetic chemical standard. All clinical values were also evaluated at the time of miR isolation. RESULTS A total of 887 miRs were screened for three groups. Lower expression of miR-214 in AS than in HC and RA was observed after normalization of raw data. Finally, lower expression of serum miR-214 was confirmed in AS after validation by qPCR. Correlation analysis showed that the level of miR-214 of AS was significantly associated with Ankylosing Spondylitis Disease Activity Score-C-reactive protein (r = 0.299, P = 0.02). However, other disease-specific variables showed no statistical significance: gender (P = 0.286), peripheral arthritis (P = 0.634), enthesitis (P = 0.464), dacylitis (P = 0.750), psoriasis (P = 0.552), inflammatory bowel disease (P = 0.369), human leukocyte antigen-B27 positivity (P = 0.473), use of non-steroidal anti-inflammatory drugs (P = 0.448), and use of tumor necrosis factor-blocker in the last 3 months (P = 0.505). CONCLUSION miR-214 may serve as a noninvasive biomarker for diagnosis of AS. In addition, expression level of miR-214 was associated with disease activity.
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Affiliation(s)
- Hyun Yi Kook
- Department of Rheumatology, Research Institute of Medical Sciences, Chonnam National University Medical School and Hospital & College of Nursing of Chonnam National University, Gwangju, Korea
| | - So-Hee Jin
- Department of Rheumatology, Research Institute of Medical Sciences, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Pu-Reum Park
- Department of Rheumatology, Research Institute of Medical Sciences, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Seung-Jin Lee
- Department of Radiology, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Hong-Joon Shin
- Department of Pulmonology, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Tae-Jong Kim
- Department of Rheumatology, Research Institute of Medical Sciences, Chonnam National University Medical School and Hospital, Gwangju, Korea
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Interplay between early-life malnutrition, epigenetic modulation of the immune function and liver diseases. Nutr Res Rev 2019; 32:128-145. [PMID: 30707092 DOI: 10.1017/s0954422418000239] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Early-life nutrition plays a critical role in fetal growth and development. Food intake absence and excess are the two main types of energy malnutrition that predispose to the appearance of diseases in adulthood, according to the hypothesis of 'developmental origins of health and disease'. Epidemiological data have shown an association between early-life malnutrition and the metabolic syndrome in later life. Evidence has also demonstrated that nutrition during this period of life can affect the development of the immune system through epigenetic mechanisms. Thus, epigenetics has an essential role in the complex interplay between environmental factors and genetics. Altogether, this leads to the inflammatory response that is commonly seen in non-alcoholic fatty liver disease (NAFLD), the hepatic manifestation of the metabolic syndrome. In conjunction, DNA methylation, covalent modification of histones and the expression of non-coding RNA are the epigenetic phenomena that affect inflammatory processes in the context of NAFLD. Here, we highlight current understanding of the mechanisms underlying developmental programming of NAFLD linked to epigenetic modulation of the immune system and environmental factors, such as malnutrition.
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25
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Dongiovanni P, Meroni M, Longo M, Fargion S, Fracanzani AL. miRNA Signature in NAFLD: A Turning Point for a Non-Invasive Diagnosis. Int J Mol Sci 2018; 19:E3966. [PMID: 30544653 PMCID: PMC6320931 DOI: 10.3390/ijms19123966] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/03/2018] [Accepted: 12/06/2018] [Indexed: 12/12/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) defines a wide pathological spectrum ranging from simple steatosis to nonalcoholic steatohepatitis (NASH) which may predispose to liver cirrhosis and hepatocellular carcinoma. It represents the leading cause of hepatic damage worldwide. Diagnosis of NASH still requires liver biopsy but due to the high prevalence of NAFLD, this procedure, which is invasive, is not practicable for mass screening. Thus, it is crucial to non-invasively identify NAFLD patients at higher risk of progression to NASH and fibrosis. It has been demonstrated that hepatic fat content and progressive liver damage have a strong heritable component. Therefore, genetic variants associated with NAFLD have been proposed as non-invasive markers to be used in clinical practice. However, genetic variability is not completely explained by these common variants and it is possible that many of the phenotypic differences result from gene-environment interactions. Indeed, NAFLD development and progression is also modulated by epigenetic factors, in particular microRNAs (miRNAs), which control at post-transcriptional level many complementary target mRNAs and whose dysregulation has been shown to have high prognostic and predictive value in NAFLD. The premise of the current review is to discuss the role of miRNAs as pathogenic factors, risk predictors and therapeutic targets in NAFLD.
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Affiliation(s)
- Paola Dongiovanni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano 20122, Italy.
| | - Marica Meroni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano 20122, Italy.
| | - Miriam Longo
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano 20122, Italy.
| | - Silvia Fargion
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano 20122, Italy.
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano 20122, Italy.
| | - Anna Ludovica Fracanzani
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano 20122, Italy.
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano 20122, Italy.
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Su L, Liu M. Correlation analysis on the expression levels of microRNA-23a and microRNA-23b and the incidence and prognosis of ovarian cancer. Oncol Lett 2018; 16:262-266. [PMID: 29928410 PMCID: PMC6006491 DOI: 10.3892/ol.2018.8669] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 12/10/2017] [Indexed: 12/18/2022] Open
Abstract
The present study aimed to investigate the expression levels of microRNA (miR)-23a and miR-23b in the tumor tissues of patients with ovarian cancer. The study also explored the correlation of miR-23a and miR-23b expression levels in the tumor tissues with the clinic-pathological parameters and prognosis of the patients. Specimens of frozen tumor tissues and normal tissues adjacent to the tumor were collected from 50 patients with ovarian cancer. Reverse transcription-quantitative polymerase chain reaction was adopted to detect the expression levels of miR-23a and miR-23b in tumor tissues. Furthermore, normal tissues adjacent to the tumor were utilized as the control for the experiments and Pearson method was used to analyze the correlation between miR-23a and miR-23b expression levels in tumor tissues. The correlation of miR-23a and miR-23 expression in tumor tissues and the prognosis of the patients with ovarian cancer was analyzed in combination with clinical data. The expression of miR-23a in the tissues of ovarian cancer was significantly higher in comparison with normal adjacent tissues. However, the expression of miR-23b in the tissues of ovarian cancer was significantly lower when compared with adjacent normal tissues. Notably, the expression of miR-23a was negatively correlated with that of miR-23b in tumor tissues of ovarian cancer. The high expression of miR-23a and the low expression of miR-23b in tumor tissues of the patients was correlated with the degree of tumor differentiation, metastasis of lymph nodes and clinical staging. The five-year overall survival rate of the patients was 36% (18/50). Univariate survival analysis indicated that miR-23a and miR-23b were the factors influencing the overall survival rate of ovarian cancer. The present findings suggest that high expression of miR-23a and the low expression of miR-23b are closely correlated with the occurrence and development of ovarian cancer. The abnormal expression of the miR-23a and miR-23b could be utilized as potential prognostic molecular markers of ovarian cancer.
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Affiliation(s)
- Li Su
- Department of Obstetrics and Gynecology, Longnan Hospital, Heilongjiang 163001, P.R. China
| | - Mingmei Liu
- Department of Obstetrics and Gynecology, Oilfields General Hospital in Daqing, Daqing, Heilongjiang 163001, P.R. China
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Liu F, Gong R, Lv X, Li H. The expression profiling and ontology analysis of non-coding RNAs in dexamethasone induced steatosis in hepatoma cell. Gene 2018; 650:19-26. [PMID: 29409992 DOI: 10.1016/j.gene.2018.01.089] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 01/09/2018] [Accepted: 01/26/2018] [Indexed: 12/17/2022]
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28
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Lonardo A, Nascimbeni F, Maurantonio M, Marrazzo A, Rinaldi L, Adinolfi LE. Nonalcoholic fatty liver disease: Evolving paradigms. World J Gastroenterol 2017; 23:6571-6592. [PMID: 29085206 PMCID: PMC5643282 DOI: 10.3748/wjg.v23.i36.6571] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/21/2017] [Accepted: 09/05/2017] [Indexed: 02/06/2023] Open
Abstract
In the last years new evidence has accumulated on nonalcoholic fatty liver disease (NAFLD) challenging the paradigms that had been holding the scene over the previous 30 years. NAFLD has such an epidemic prevalence as to make it impossible to screen general population looking for NAFLD cases. Conversely, focusing on those cohorts of individuals exposed to the highest risk of NAFLD could be a more rational approach. NAFLD, which can be diagnosed with either non-invasive strategies or through liver biopsy, is a pathogenically complex and clinically heterogeneous disease. The existence of metabolic as opposed to genetic-associated disease, notably including ”lean NAFLD” has recently been recognized. Moreover, NAFLD is a systemic condition, featuring metabolic, cardiovascular and (hepatic/extra-hepatic) cancer risk. Among the clinico-laboratory features of NAFLD we discuss hyperuricemia, insulin resistance, atherosclerosis, gallstones, psoriasis and selected endocrine derangements. NAFLD is a precursor of type 2 diabetes (T2D) and metabolic syndrome and progressive liver disease develops in T2D patients in whom the course of disease is worsened by NAFLD. Finally, lifestyle changes and drug treatment options to be implemented in the individual patient are also critically discussed. In conclusion, this review emphasizes the new concepts on clinical and pathogenic heterogeneity of NAFLD, a systemic disorder with a multifactorial pathogenesis and protean clinical manifestations. It is highly prevalent in certain cohorts of individuals who are thus potentially amenable to selective screening strategies, intensive follow-up schedules for early identification of liver-related and extrahepatic complications and in whom earlier and more aggressive treatment schedules should be carried out whenever possible.
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Affiliation(s)
- Amedeo Lonardo
- Azienda Ospedaliero-Universitaria di Modena, Ospedale Civile di Baggiovara, 41126 Modena, Italy
| | - Fabio Nascimbeni
- Azienda Ospedaliero-Universitaria di Modena, Ospedale Civile di Baggiovara, 41126 Modena, Italy
- University of Modena and Reggio Emilia, 41126 Modena, Italy
| | - Mauro Maurantonio
- Azienda Ospedaliero-Universitaria di Modena, Ospedale Civile di Baggiovara, 41126 Modena, Italy
| | - Alessandra Marrazzo
- Azienda Ospedaliero-Universitaria di Modena, Ospedale Civile di Baggiovara, 41126 Modena, Italy
- University of Modena and Reggio Emilia, 41126 Modena, Italy
| | - Luca Rinaldi
- Department of Medical, Surgical, Neurological, Geriatric, and Metabolic Sciences, University of Campania “Luigi Vanvitelli”, 80100 Naples, Italy
| | - Luigi Elio Adinolfi
- Department of Medical, Surgical, Neurological, Geriatric, and Metabolic Sciences, University of Campania “Luigi Vanvitelli”, 80100 Naples, Italy
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Correlation of the expression of miR-146a in peripheral blood mononuclear cells of patients with ankylosing spondylitis and inflammatory factors. Exp Ther Med 2017; 14:5027-5031. [PMID: 29201209 PMCID: PMC5704307 DOI: 10.3892/etm.2017.5155] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/14/2017] [Indexed: 01/01/2023] Open
Abstract
We investigated the expression of miR-146a in peripheral blood mononuclear cell (PBMC) of patients with ankylosing spondylitis (AS) and its correlation with inflammatory factors to explore the clinical significance. In total 45 patients with AS were selected at the Weifang People's Hospital from June, 2014 to January, 2016. At the same time, 30 healthy volunteers were also selected to serve as control group. Expression level of miR-146a in PBMC cells of patients in each group was detected by quantitative real-time-polymerase chain reaction (qRT-PCR). Levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and IL-6 in serum and the supernatant of culture medium of PBMC derived from each group were detected by enzyme-linked immunosorbent assay (ELISA). Correlations between expression level of miR-146a and serum inflammatory factors, and clinical indicators were analyzed. Clinical indicators included bath ankylosing spondylitis disease activity index (BASDAI), C-reactive protein (CRP), erythrocyte sedimentation rate (ESR) and duration of morning stiffness. Expression level of miR-146a in PBMC of AS patients was significantly higher than that of healthy control (P<0.01); levels of TNF-α, IL-1β and IL-6 in serum and the supernatant of culture medium of PBMC derived from AS patients were significant compared to those of control group (P<0.01); expression of miR-146a in PBMC of patients with AS was positively correlated with the levels of TNF-α, IL-1β and IL-6 in serum (r=0.632, P<0.01; r=0.574, P<0.01; r=0.483, P<0.01). In addition, expression level of miR-146a in PBMC of patients with AS was positively correlated with BASDAI, ESR, CRP and duration of morning stiffness (r=0.551, P<0.01; r=0.738, P<0.01; r=0.685, P<0.01; r=0.497, P<0.01). Expression level of miR-146a in PBMC of AS patients was significantly increased and the expression level was positively correlated with the levels of TNF-α, IL-1β and IL-6 in serum (P<0.05). In addition, expression level of miR-146a in PBMC of AS patients was also positively correlated with BASDAI, ESR, CRP and duration of morning stiffness. Those results suggest that miR-146a may be involved in the pathogenesis of AS, and the expression level of miR-146a in PBMC cells may be helpful for diagnosis of AS and judgment of disease activity.
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Arenaza L, Medrano M, Amasene M, Rodríguez-Vigil B, Díez I, Graña M, Tobalina I, Maiz E, Arteche E, Larrarte E, Huybrechts I, Davis CL, Ruiz JR, Ortega FB, Margareto J, Labayen I. Prevention of diabetes in overweight/obese children through a family based intervention program including supervised exercise (PREDIKID project): study protocol for a randomized controlled trial. Trials 2017; 18:372. [PMID: 28793919 PMCID: PMC5551009 DOI: 10.1186/s13063-017-2117-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 07/26/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The global pandemic of obesity has led to an increased risk for prediabetes and type-2 diabetes (T2D). The aims of the current project are: (1) to evaluate the effect of a 22-week family based intervention program, including supervised exercise, on insulin resistance syndrome (IRS) risk in children with a high risk of developing T2D and (2) to identify the profile of microRNA in circulating exosomes and in peripheral blood mononuclear cells in children with a high risk of developing T2D and its response to a multidisciplinary intervention program including exercise. METHODS A total of 84 children, aged 8-12 years, with a high risk of T2D will be included and randomly assigned to control (N = 42) or intervention (N = 42) groups. The control group will receive a family based lifestyle education and psycho-educational program (2 days/month), while the intervention group will attend the same lifestyle education and psycho-educational program plus the exercise program (3 days/week, 90 min per session including warm-up, moderate to vigorous aerobic activities, and strength exercises). The following measurements will be evaluated at baseline prior to randomization and after the intervention: fasting insulin, glucose and hemoglobin A1c; body composition (dual-energy X-ray absorptiometry); ectopic fat (magnetic resonance imaging); microRNA expression in circulating exosomes and in peripheral blood mononuclear cells (MiSeq; Illumina); cardiorespiratory fitness (cardiopulmonary exercise testing); dietary habits and physical activity (accelerometry). DISCUSSION Prevention and identification of children with a high risk of developing T2D could help to improve their cardiovascular health and to reduce the comorbidities associated with obesity. TRIAL REGISTRATION ClinicalTrials.gov, ID: NCT03027726 . Registered on 16 January 2017.
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Affiliation(s)
- Lide Arenaza
- Nutrition, Exercise and Health Research group, Elikadura, Ariketa Fisikoa eta Osasuna, ELIKOS group, Department of Nutrition and Food Science, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain
| | - María Medrano
- Nutrition, Exercise and Health Research group, Elikadura, Ariketa Fisikoa eta Osasuna, ELIKOS group, Department of Nutrition and Food Science, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain
| | - María Amasene
- Nutrition, Exercise and Health Research group, Elikadura, Ariketa Fisikoa eta Osasuna, ELIKOS group, Department of Nutrition and Food Science, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain
| | - Beatriz Rodríguez-Vigil
- Department of Magnetic Resonance Imaging, Osatek, University Hospital of Alava (HUA), Vitoria-Gasteiz, Spain
| | - Ignacio Díez
- Paediatric Endocrinology Unit, University Hospital of Araba (HUA), Vitoria-Gasteiz, Spain
| | - Manuel Graña
- Computational Intelligence Group, University of the Basque Country, UPV/EHU, Donostia, Spain
| | - Ignacio Tobalina
- Department of Nuclear Medicine, University Hospital of Araba (HUA), Vitoria-Gasteiz, Spain
| | - Edurne Maiz
- Department of Personality, Assessment and Psychological Treatment, University of the Basque Country, UPV/EHU, San Sebastián-Donostia, Spain
| | - Edurne Arteche
- Department of Radiology, University Hospital of Araba (HUA), Vitoria-Gasteiz, Spain
| | - Eider Larrarte
- Technological Services Division, Health and quality of life, TECNALIA, Miñano, Spain
| | - Inge Huybrechts
- Nutrition and Metabolism Section, International Agency for Research on Cancer, World Health Organization, Lyon, France
| | - Catherine L. Davis
- Georgia Prevention Institute, Medical College of Georgia, Augusta University, Augusta, GA USA
| | - Jonatan R. Ruiz
- PROmoting FITness and Health through physical activity research group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Grenada, Spain
| | - Francisco B. Ortega
- PROmoting FITness and Health through physical activity research group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Grenada, Spain
| | - Javier Margareto
- Technological Services Division, Health and quality of life, TECNALIA, Miñano, Spain
| | - Idoia Labayen
- Department of Health Sciences, Public University of Navarra, Pamplona, Spain
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Shimpi PC, More VR, Paranjpe M, Donepudi AC, Goodrich JM, Dolinoy DC, Rubin B, Slitt AL. Hepatic Lipid Accumulation and Nrf2 Expression following Perinatal and Peripubertal Exposure to Bisphenol A in a Mouse Model of Nonalcoholic Liver Disease. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:087005. [PMID: 28796629 PMCID: PMC5783659 DOI: 10.1289/ehp664] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 01/28/2017] [Accepted: 01/31/2017] [Indexed: 05/03/2023]
Abstract
BACKGROUND Exposure to chemicals during critical windows of development may re-program liver for increased risk of nonalcoholic fatty liver disease (NAFLD). Bisphenol A (BPA), a plastics component, has been described to impart adverse effects during gestational and lactational exposure. Our work has pointed to nuclear factor E2-related factor 2 (Nrf2) being a modulator of hepatic lipid accumulation in models of NAFLD. OBJECTIVES To determine if chemical exposure can prime liver for steatosis via modulation of NRF2 and epigenetic mechanisms. METHODS Utilizing BPA as a model exposure, pregnant CD-1 mice were administered 25μg/kg/day BPA via osmotic minipumps from gestational day 8 through postnatal day (PND)16. The offspring were weaned on PND21 and exposed to same dose of BPA via their drinking water through PND35. Tissues were collected from pups at week 5 (W5), and their littermates at week 39 (W39). RESULTS BPA increased hepatic lipid content concomitant with increased Nrf2 and pro-lipogenic enzyme expression at W5 and W39 in female offspring. BPA exposure increased Nrf2 binding to a putative antioxidant response element consensus sequence in the sterol regulatory-element binding protein-1c (Srebp-1c) promoter. Known Nrf2 activators increased SREBP-1C promoter reporter activity in HepG2 cells. Methylated DNA immunoprecipitation-PCR and pyrosequencing revealed that developmental BPA exposure induced hypomethylation of the Nrf2 and Srebp-1c promoters in livers of W5 mice, which was more prominent in W39 mice than in others. CONCLUSION Exposure to a xenobiotic during early development induced persistent fat accumulation via hypomethylation of lipogenic genes. Moreover, increased Nrf2 recruitment to the Srebp-1c promoter in livers of BPA-exposed mice was observed. Overall, the underlying mechanisms described a broader impact beyond BPA exposure and can be applied to understand other models of NAFLD. https://doi.org/10.1289/EHP664.
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Affiliation(s)
- Prajakta C Shimpi
- Biomedical and Pharmaceutical Sciences, University of Rhode Island , Kingston, Rhode Island, USA
| | - Vijay R More
- Biomedical and Pharmaceutical Sciences, University of Rhode Island , Kingston, Rhode Island, USA
| | - Maneesha Paranjpe
- Sackler School of Graduate Biomedical Sciences, Tufts University , Boston, Massachusetts, USA
| | - Ajay C Donepudi
- Biomedical and Pharmaceutical Sciences, University of Rhode Island , Kingston, Rhode Island, USA
| | - Jaclyn M Goodrich
- Department of Environmental Health Sciences, University of Michigan School of Public Health , Ann Arbor, Michigan, USA
| | - Dana C Dolinoy
- Department of Environmental Health Sciences, University of Michigan School of Public Health , Ann Arbor, Michigan, USA
| | - Beverly Rubin
- Sackler School of Graduate Biomedical Sciences, Tufts University , Boston, Massachusetts, USA
| | - Angela L Slitt
- Biomedical and Pharmaceutical Sciences, University of Rhode Island , Kingston, Rhode Island, USA
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Xie D, Yuan P, Wang D, Jin H, Chen H. Expression and prognostic significance of miR-375 and miR-221 in liver cancer. Oncol Lett 2017; 14:2305-2309. [PMID: 28781668 PMCID: PMC5530117 DOI: 10.3892/ol.2017.6423] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/25/2017] [Indexed: 12/12/2022] Open
Abstract
The purpose of this study was to investigate the expression of miR-375 and miR-221 in liver cancer, and examine the correlations with pathological parameters and prognosis. We collected tumors and tumor-adjacent normal tissue from 70 patients with liver cancer admitted to the Department of General Surgery of Zhejiang Hospital. The expression of miR-375 by RT-qPCR was significantly lower in liver cancer tissues than that in the tumor-adjacent normal tissues, and the low expression was correlated with the lymphatic metastasis and TNM stage. By contrast, the expression of miR-221 was significantly higher in liver cancer than that in the tumor-adjacent tissues, and the high expression was correlated with the lymphatic metastasis and TNM stage. The overall 5-year survival rate of patients was 12.9% (9/70). Single-factor survival analysis revealed that miR-375 and miR-221 were the factors affecting the overall survival rate of liver cancer (P<0.05) and multivariate survival analysis by Cox proportional hazards model showed that miR-375 and miR-221 were the independent factors affecting the survival time of patients with liver cancer. Low expression of miR-375 and high expression of miR-221 are closely correlated with the occurrence and development of liver cancer, especially lymphatic metastasis and TNM stage. Thus, miR-375 and miR-221 can serve as reference biomarkers for guiding the treatment of liver cancer and for estimating prognosis.
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Affiliation(s)
- Dafei Xie
- Department of General Surgery, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
| | - Peiwen Yuan
- Intensive Care Unit, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
| | - Dong Wang
- Department of General Surgery, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
| | - Hua Jin
- Department of General Surgery, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
| | - Hui Chen
- Department of General Surgery, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
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Fish Oil Feeding Modulates the Expression of Hepatic MicroRNAs in a Western-Style Diet-Induced Nonalcoholic Fatty Liver Disease Rat Model. BIOMED RESEARCH INTERNATIONAL 2017; 2017:2503847. [PMID: 28691019 PMCID: PMC5485288 DOI: 10.1155/2017/2503847] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 05/02/2017] [Accepted: 05/14/2017] [Indexed: 12/14/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is one of the most prevalent chronic liver diseases worldwide. Recent studies have indicated that fish oil supplementation has benefits against NAFLD. Our previous transcriptomic study has validated the effect of fish oil supplementation on altering hepatic gene expression in a NAFLD rat model. In the current study, we examined the effects of fish oil on the expression of hepatic microRNAs. Male Sprague–Dawley rats were fed with a lab chow (CON), high-fat high-cholesterol diet (WD), or WD supplemented with fish oil (FOH), respectively. Small RNAs were extracted from livers for RNA-sequencing. A total of 79 miRNAs were identified as differentially expressed miRNAs (DEMs) between FOH and WD groups, exemplified by rno-miR-29c-3p, rno-miR-30d-5p, rno-miR-33-5p, rno-miR-34a, and rno-miR-328a-3p. Functional annotation of DEMs predicted target genes suggested that the altered hepatic miRNAs contributed to fish oil modification of hepatic lipid metabolism and signaling transduction. Integrative analysis of DEMs and differentially expressed genes suggested that the expression difference of Pcsk9, Insig2, Per3, and Socs1/3 between FOH and WD groups may be due to miRNA modification. Our study reveals that fish oil supplementation alters hepatic expression of miRNAs, which may contribute to fish oil amelioration of NAFLD in rats.
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Lee J, Kim Y, Friso S, Choi SW. Epigenetics in non-alcoholic fatty liver disease. Mol Aspects Med 2016; 54:78-88. [PMID: 27889327 DOI: 10.1016/j.mam.2016.11.008] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 11/18/2016] [Accepted: 11/22/2016] [Indexed: 12/16/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD), a common hepatic disorder ranging from simple steatosis through steatohepatitis to fibrosis and cirrhosis, is an emerging health concern. NAFLD is a pathologic condition characterized by the buildup of extra fat in liver cells that is not caused by alcohol consumption. Excess hepatic fat accumulation results from increased delivery of triglycerides (TG) to the liver or conversion of surplus carbohydrates to TG. Importantly, a subgroup of NAFLD results in hepatocellular injury and inflammation, which is referred to as non-alcoholic steatohepatitis (NASH), and may progress to irreversible cirrhosis and hepatocellular carcinoma (HCC). NAFLD shares, in part, the common pathogenesis of metabolic syndrome including obesity, hyperlipidemia, insulin resistance, mitochondrial damage, oxidative stress response, and the release of inflammatory cytokines. Epigenetics, an inheritable phenomenon that affects gene expression without altering the DNA sequence, provides a new perspective on the pathogenesis of NAFLD. Reversible epigenetic changes take place at the transcriptional level and provide a phenotypic connection between the host and environment. An accumulating body of evidence suggests the importance of epigenetic roles in NAFLD, which in turn can be identified as potential therapeutic targets and non-invasive biomarkers of NAFLD. It is anticipated that the epigenetic modifiers in NAFLD may provide novel molecular indicators that can determine not only the initial risk but also the disease progression and prognosis. In the present review, we update the roles of epigenetics as pathologic mechanisms, therapeutic targets and biomarkers in NAFLD.
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Affiliation(s)
- Jooho Lee
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, CHA Bundang Medical Center, CHA University of Medicine and Science, Seongnam, 13496, South Korea
| | - Yuri Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, 03760, South Korea
| | - Simonetta Friso
- University of Verona School of Medicine, Verona, 37134, Italy
| | - Sang-Woon Choi
- Chaum Life Center, CHA University of Medicine and Science, Seoul, 06062, South Korea.
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miR33a/miR33b* and miR122 as Possible Contributors to Hepatic Lipid Metabolism in Obese Women with Nonalcoholic Fatty Liver Disease. Int J Mol Sci 2016; 17:ijms17101620. [PMID: 27669236 PMCID: PMC5085653 DOI: 10.3390/ijms17101620] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 09/13/2016] [Accepted: 09/13/2016] [Indexed: 02/06/2023] Open
Abstract
Specific miRNA expression profiles have been shown to be associated with nonalcoholic fatty liver disease (NAFLD). We examined the correlation between the circulating levels and hepatic expression of miR122 and miR33a/b*, the key lipid metabolism-related gene expression and the clinicopathological factors of obese women with NAFLD. We measured miR122 and miR33a/b* expression in liver samples from 62 morbidly obese (MO), 30 moderately obese (ModO), and eight normal-weight controls. MiR122 and miR33a/b* expression was analyzed by qRT-PCR. Additionally, miR122 and miR33b* circulating levels were analyzed in 122 women. Hepatic miR33b* expression was increased in MO compared to ModO and controls, whereas miR122 expression was decreased in the MO group compared to ModO. In obese cohorts, miR33b* expression was increased in nonalcoholic steatohepatitis (NASH). Regarding circulating levels, MO patients with NASH showed higher miR122 levels than MO with simple steatosis (SS). These circulating levels are good predictors of histological features associated with disease severity. MO is associated with altered hepatic miRNA expression. In obese women, higher miR33b* liver expression is associated with NASH. Moreover, multiple correlations between miRNAs and the expression of genes related to lipid metabolism were found, that would suggest a miRNA-host gene circuit. Finally, miR122 circulating levels could be included in a panel of different biomarkers to improve accuracy in the non-invasive diagnosis of NASH.
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Buzzetti E, Pinzani M, Tsochatzis EA. The multiple-hit pathogenesis of non-alcoholic fatty liver disease (NAFLD). Metabolism 2016; 65:1038-48. [PMID: 26823198 DOI: 10.1016/j.metabol.2015.12.012] [Citation(s) in RCA: 1836] [Impact Index Per Article: 229.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 11/14/2015] [Accepted: 12/17/2015] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is increasingly prevalent and represents a growing challenge in terms of prevention and treatment. Despite its high prevalence, only a small minority of affected patients develops inflammation and subsequently fibrosis and chronic liver disease, while most of them only exhibit simple steatosis. In this context, the full understanding of the mechanisms underlying the development of NAFLD and non-alcoholic steatohepatitis (NASH) is of extreme importance; despite advances in this field, knowledge on the pathogenesis of NAFLD is still incomplete. The 'two-hit' hypothesis is now obsolete, as it is inadequate to explain the several molecular and metabolic changes that take place in NAFLD. The "multiple hit" hypothesis considers multiple insults acting together on genetically predisposed subjects to induce NAFLD and provides a more accurate explanation of NAFLD pathogenesis. Such hits include insulin resistance, hormones secreted from the adipose tissue, nutritional factors, gut microbiota and genetic and epigenetic factors. In this article, we review the factors that form this hypothesis.
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Affiliation(s)
- Elena Buzzetti
- UCL Institute for Liver and Digestive Health and Sheila Sherlock Liver Unit, Royal Free Hospital and UCL, London, UK
| | - Massimo Pinzani
- UCL Institute for Liver and Digestive Health and Sheila Sherlock Liver Unit, Royal Free Hospital and UCL, London, UK
| | - Emmanuel A Tsochatzis
- UCL Institute for Liver and Digestive Health and Sheila Sherlock Liver Unit, Royal Free Hospital and UCL, London, UK.
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Bedossa P, Patel K. Biopsy and Noninvasive Methods to Assess Progression of Nonalcoholic Fatty Liver Disease. Gastroenterology 2016; 150:1811-1822.e4. [PMID: 27003601 DOI: 10.1053/j.gastro.2016.03.008] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 02/24/2016] [Accepted: 03/09/2016] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) comprises a spectrum of histopathologic features, ranging from isolated hepatic steatosis, to steatohepatitis with evidence of hepatocellular injury and fibrosis, to cirrhosis. The diagnosis and determination of NAFLD prognosis requires clinical and histopathologic assessments. Liver biopsy still is regarded as the reference for differentiating steatosis (NAFL) from nonalcoholic steatohepatitis, for staging hepatic fibrosis, and for identifying NAFLD in patients with other chronic liver disease. Standardized grading and staging histologic scoring systems, such as the NAFLD activity score and the steatosis, activity, and fibrosis score, can help guide clinical decisions and assess outcomes of clinical trials. Improved understanding of the pathophysiology of NAFLD and technologic advances have led to algorithms that can be used to assess serum biomarkers and imaging methods that are noninvasive alternatives to biopsy collection and analysis. We review the advantages and limitations of biopsy analysis and noninvasive tests as diagnostic and prognostic tools for patients with NAFLD. We also discuss techniques to improve dynamic histopathology assessment, and emerging blood and imaging biomarkers of fibrogenesis.
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Affiliation(s)
- Pierre Bedossa
- Department of Pathology, Physiology and Imaging, Hôpital Beaujon, Clichy, France
| | - Keyur Patel
- Division of Gastroenterology, University of Toronto Health Network, Toronto General Hospital, Toronto, Ontario, Canada.
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Xiao J, Lv D, Zhao Y, Chen X, Song M, Liu J, Bei Y, Wang F, Yang W, Yang C. miR-149 controls non-alcoholic fatty liver by targeting FGF-21. J Cell Mol Med 2016; 20:1603-8. [PMID: 27061435 PMCID: PMC4956949 DOI: 10.1111/jcmm.12848] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 02/24/2016] [Indexed: 12/14/2022] Open
Abstract
Non‐alcoholic fatty liver disease (NAFLD), a lipid metabolism disorder characterized by the accumulation of intrahepatic fat, has emerged as a global public health problem. However, its underlying molecular mechanism remains unclear. We previously have found that miR‐149 was elevated in NAFLD induced by high‐fat diet mice model, whereas decreased by a 16‐week running programme. Here, we reported that miR‐149 was increased in HepG2 cells treated with long‐chain fatty acid (FFA). In addition, miR‐149 was able to promote lipogenesis in HepG2 cells in the absence of FFA treatment. Moreover, inhibition of miR‐149 was capable of inhibiting lipogenesis in HepG2 cells in the presence of FFA treatment. Meanwhile, fibroblast growth factor‐21 (FGF‐21) was identified as a target gene of miR‐149, which was demonstrated by the fact that miR‐149 could negatively regulate the protein expression level of FGF‐21, and FGF‐21 was also responsible for the effect of miR‐149 inhibitor in decreasing lipogenesis in HepG2 cells in the presence of FFA treatment. These data implicate that miR‐149 might be a novel therapeutic target for NAFLD.
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Affiliation(s)
- Junjie Xiao
- Regeneration and Ageing Lab, Experimental Center of Life Sciences, School of Life Science, Shanghai University, Shanghai, China.,Innovative Drug Research Center of Shanghai University, Shanghai, China
| | - Dongchao Lv
- Regeneration and Ageing Lab, Experimental Center of Life Sciences, School of Life Science, Shanghai University, Shanghai, China.,Innovative Drug Research Center of Shanghai University, Shanghai, China
| | - Yingying Zhao
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoyu Chen
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Meiyi Song
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jingqi Liu
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yihua Bei
- Regeneration and Ageing Lab, Experimental Center of Life Sciences, School of Life Science, Shanghai University, Shanghai, China.,Innovative Drug Research Center of Shanghai University, Shanghai, China
| | - Fei Wang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wenzhuo Yang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Changqing Yang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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40
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Zhan YT, Su HY, An W. Glycosyltransferases and non-alcoholic fatty liver disease. World J Gastroenterol 2016; 22:2483-2493. [PMID: 26937136 PMCID: PMC4768194 DOI: 10.3748/wjg.v22.i8.2483] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 10/22/2015] [Accepted: 11/19/2015] [Indexed: 02/06/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common form of chronic liver disease and its incidence is increasing worldwide. However, the underlying mechanisms leading to the development of NAFLD are still not fully understood. Glycosyltransferases (GTs) are a diverse class of enzymes involved in catalyzing the transfer of one or multiple sugar residues to a wide range of acceptor molecules. GTs mediate a wide range of functions from structure and storage to signaling, and play a key role in many fundamental biological processes. Therefore, it is anticipated that GTs have a role in the pathogenesis of NAFLD. In this article, we present an overview of the basic information on NAFLD, particularly GTs and glycosylation modification of certain molecules and their association with NAFLD pathogenesis. In addition, the effects and mechanisms of some GTs in the development of NAFLD are summarized.
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41
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Chandra V, Kim JJ, Mittal B, Rai R. MicroRNA aberrations: An emerging field for gallbladder cancer management. World J Gastroenterol 2016; 22:1787-1799. [PMID: 26855538 PMCID: PMC4724610 DOI: 10.3748/wjg.v22.i5.1787] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 11/12/2015] [Accepted: 12/21/2015] [Indexed: 02/06/2023] Open
Abstract
Gallbladder cancer (GBC) is infrequent but most lethal biliary tract malignancy characterized by an advanced stage diagnosis and poor survival rates attributed to absence of specific symptoms and effective treatment options. These necessitate development of early prognostic/predictive markers and novel therapeutic interventions. MicroRNAs (miRNAs) are small, non-coding RNA molecules that play a key role in tumor biology by functioning like tumor suppressor- or onco- genes and their aberrant expression are associated with the pathogenesis of several neoplasms with overwhelming clinical implications. Since miRNA signature is tissue specific, here, we focused on current data concerning the miRNAs abberations in GBC pathogenesis. In GBC, miRNAs with tumor suppressor activity (miR-135-5p, miR-335, miR-34a, miR-26a, miR-146b-5p, Mir-218-5p, miR-1, miR-145, mir-130a) were found downregulated, while those with oncogenic property (miR-20a, miR-182, mir-155) were upregulated. The expression profile of miRNAs was significantly associated with GBC prognosis and prediction, and forced over-expression/ inhibition of these miRNAs was shown to affect tumor growth and development. Further, differential expression of miRNAs in the blood samples of GBC patients suggest miRNAs as promising noninvasive biomarker. Thus, miRNAs represent potential candidate for GBC management, though many hurdles need to be overcome before miRNAs therapy can be clinically applied to GBC prevention and treatment.
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42
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Xiao J, Bei Y, Liu J, Dimitrova-Shumkovska J, Kuang D, Zhou Q, Li J, Yang Y, Xiang Y, Wang F, Yang C, Yang W. miR-212 downregulation contributes to the protective effect of exercise against non-alcoholic fatty liver via targeting FGF-21. J Cell Mol Med 2015; 20:204-16. [PMID: 26648452 PMCID: PMC4727558 DOI: 10.1111/jcmm.12733] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 10/03/2015] [Indexed: 12/17/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is associated with obesity and lifestyle, while exercise is beneficial for NAFLD. Dysregulated microRNAs (miRs) control the pathogenesis of NAFLD. However, whether exercise could prevent NAFLD via targeting microRNA is unknown. In this study, normal or high-fat diet (HF) mice were either subjected to a 16-week running program or kept sedentary. Exercise attenuated liver steatosis in HF mice. MicroRNA array and qRT-PCR demonstrated that miR-212 was overexpressed in HF liver, while reduced by exercise. Next, we investigated the role of miR-212 in lipogenesis using HepG2 cells with/without long-chain fatty acid treatment (± FFA). FFA increased miR-212 in HepG2 cells. Moreover, miR-212 promoted lipogenesis in HepG2 cells (± FFA). Fibroblast growth factor (FGF)-21, a key regulator for lipid metabolism, was negatively regulated by miR-212 at protein level in HepG2 cells. Meanwhile, FFA downregulated FGF-21 both at mRNA and protein levels in HepG2 cells. Also, FGF-21 protein level was reduced in HF liver, while reversed by exercise in vivo. Furthermore, siRNA-FGF-21 abolished the lipogenesis-reducing effect of miR-212 inhibitor in HepG2 cells (± FFA), validating FGF-21 as a target gene of miR-212. These data link the benefit of exercise and miR-212 downregulation in preventing NAFLD via targeting FGF-21.
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Affiliation(s)
- Junjie Xiao
- Regeneration and Ageing Lab, Experimental Center of Life Sciences, School of Life Science, Shanghai University, Shanghai, China.,Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, China
| | - Yihua Bei
- Regeneration and Ageing Lab, Experimental Center of Life Sciences, School of Life Science, Shanghai University, Shanghai, China.,Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, China
| | - Jingqi Liu
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jasmina Dimitrova-Shumkovska
- Regeneration and Ageing Lab, Experimental Center of Life Sciences, School of Life Science, Shanghai University, Shanghai, China.,Department of Experimental Biochemistry and Physiology, Faculty of Natural Sciences and Mathematics, University Ss Cyril and Methodius, Skopje, Republic of Macedonia
| | - Dapeng Kuang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qiulian Zhou
- Regeneration and Ageing Lab, Experimental Center of Life Sciences, School of Life Science, Shanghai University, Shanghai, China.,Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, China
| | - Jin Li
- Regeneration and Ageing Lab, Experimental Center of Life Sciences, School of Life Science, Shanghai University, Shanghai, China.,Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, China
| | - Yanning Yang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yang Xiang
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Biochemistry, Nanjing University, Nanjing, China
| | - Fei Wang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Changqing Yang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wenzhuo Yang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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43
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Baffy G. MicroRNAs in Nonalcoholic Fatty Liver Disease. J Clin Med 2015; 4:1977-88. [PMID: 26690233 PMCID: PMC4693153 DOI: 10.3390/jcm4121953] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 11/20/2015] [Accepted: 11/27/2015] [Indexed: 02/07/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) has become the most common liver disorder. Strongly linked to obesity and diabetes, NAFLD has the characteristics of complex diseases with substantial heterogeneity. Accordingly, our ability to predict the risk of advanced NAFLD and provide efficient treatment may improve by a better understanding of the relationship between genotype and phenotype. MicroRNAs (miRNAs) play a major role in the fine-tuning of gene expression and they have recently emerged as novel biomarkers and therapeutic tools in the management of NAFLD. These short non-coding RNA sequences act by partial repression or degradation of targeted mRNAs. Deregulation of miRNAs has been associated with different stages of NAFLD, while their biological role in the pathogenesis remains to be fully understood. Systems biology analyses based on predicted target genes have associated hepatic miRNAs with molecular pathways involved in NAFLD progression such as cholesterol and lipid metabolism, insulin signaling, oxidative stress, inflammation, and pathways of cell survival and proliferation. Moreover, circulating miRNAs have been identified as promising noninvasive biomarkers of NAFLD and linked to disease severity. This rapidly growing field is likely to result in major advances in the pathomechanism, prognostication, and treatment of NAFLD.
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Affiliation(s)
- György Baffy
- Department of Medicine, VA Boston Healthcare System and Brigham and Women's Hospital, Harvard Medical School, 150 S. Huntington Ave., Room 6A-46, Boston, MA 02130, USA.
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44
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Wang Y, Liu Z, Zou W, Hong H, Fang H, Tong W. Molecular regulation of miRNAs and potential biomarkers in the progression of hepatic steatosis to NASH. Biomark Med 2015; 9:1189-200. [DOI: 10.2217/bmm.15.70] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Increasing evidence suggests that microRNAs regulate diverse biological functions in the liver and play a very important function in metabolic-related disorders such as nonalcoholic fatty liver disease via regulating their target genes expression. In this review, we summarized the most recent progress in identification of miRNAs involving in the progression of liver steatosis and discussed the possible mechanisms by which miRNAs contribute to the diverse pathogenic liver injuries. We provide insights into the functional network of miRNAs by connecting miRNAs, their targets and biological pathways associated to hepatic steatosis and fibrosis, with important implications for our understanding of phenotypic-based disease pathogenesis. We also discuss the possible roles and challenges of miRNAs as biomarkers for drug-induced liver injury.
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Affiliation(s)
- Yuping Wang
- Division of Bioinformatics & Biostatistics, National Center for Toxicological Research, US FDA, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Zhichao Liu
- Division of Bioinformatics & Biostatistics, National Center for Toxicological Research, US FDA, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Wen Zou
- Division of Bioinformatics & Biostatistics, National Center for Toxicological Research, US FDA, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Huixiao Hong
- Division of Bioinformatics & Biostatistics, National Center for Toxicological Research, US FDA, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Hong Fang
- Office of Scientific Coordination, National Center for Toxicological Research, US FDA, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Weida Tong
- Division of Bioinformatics & Biostatistics, National Center for Toxicological Research, US FDA, 3900 NCTR Road, Jefferson, AR 72079, USA
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45
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Bizzarri C, Pinto RM, Ciccone S, Brescia LP, Locatelli F, Cappa M. Early and progressive insulin resistance in young, non-obese cancer survivors treated with hematopoietic stem cell transplantation. Pediatr Blood Cancer 2015; 62:1650-5. [PMID: 26017459 DOI: 10.1002/pbc.25603] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 04/28/2015] [Indexed: 01/19/2023]
Abstract
BACKGROUND It is unclear whether there is a causative relationship between the development of metabolic syndrome (MS) and increased risk of early cardiovascular morbidity in patients receiving hematopoietic stem cell transplantation (HSCT) during childhood. Early identification of risk factors associated with insulin resistance, MS, and abnormal glucose tolerance during childhood or adolescence in these patients could represent a useful tool for preventing cardiovascular disorders. PROCEDURE In a single-center, prospective, descriptive, cross-sectional study, we studied 45 survivors of hematological malignancies (age: 13.9 ± 4.8 years) treated with HSCT before the age of 18 years and 90 matched healthy controls. We collected clinical, imaging, and laboratory data including oral glucose tolerance test (OGTT). RESULTS 7/45 patients (15.6%) showed abnormal glucose tolerance at OGTT, 1/45 (2.2%) was obese, and none fulfilled the criteria for MS. A waist/height ratio >0.5 was associated with patients with abnormal glucose tolerance (85.7% of cases), compared to patients with normal glucose tolerance (42.1%) and controls (23.3%). In patients with abnormal glucose tolerance, use of total body irradiation (TBI) as conditioning regimen was more common, and time elapsed from HSCT was longer. CONCLUSIONS Patients treated with HSCT may develop insulin resistance early after transplantation. They do not show overt obesity, but have redistribution of fat tissue with central fat accumulation. The main factors associated with increased metabolic risk are TBI and time from HSCT. Evaluation of MS and glucose tolerance should be part of hormonal follow-up, which should be routinely proposed to these patients.
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Affiliation(s)
- Carla Bizzarri
- Unit of Endocrinology and Diabetes, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Rita M Pinto
- Department of Pediatric Hematology and Oncology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Sara Ciccone
- Unit of Endocrinology and Diabetes, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Letizia P Brescia
- Department of Pediatric Hematology and Oncology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Franco Locatelli
- Department of Pediatric Hematology and Oncology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.,Department of Pediatric Science, University of Pavia, Italy
| | - Marco Cappa
- Unit of Endocrinology and Diabetes, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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46
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Sun C, Fan JG, Qiao L. Potential epigenetic mechanism in non-alcoholic Fatty liver disease. Int J Mol Sci 2015; 16:5161-79. [PMID: 25751727 PMCID: PMC4394469 DOI: 10.3390/ijms16035161] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Revised: 02/14/2015] [Accepted: 02/25/2015] [Indexed: 12/13/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is characterized by excessive fat accumulation in the liver. It ranges from simple steatosis to its more aggressive form, non-alcoholic steatohepatitis (NASH), which may develop into hepatic fibrosis, cirrhosis, or hepatocellular carcinoma (HCC) if it persists for a long time. However, the exact pathogenesis of NAFLD and the related metabolic disorders remain unclear. Epigenetic changes are stable alterations that take place at the transcriptional level without altering the underlying DNA sequence. DNA methylation, histone modifications and microRNA are among the most common forms of epigenetic modification. Epigenetic alterations are involved in the regulation of hepatic lipid metabolism, insulin resistance, mitochondrial damage, oxidative stress response, and the release of inflammatory cytokines, all of which have been implicated in the development and progression of NAFLD. This review summarizes the current advances in the potential epigenetic mechanism of NAFLD. Elucidation of epigenetic factors may facilitate the identification of early diagnositic biomarkers and development of therapeutic strategies for NAFLD.
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Affiliation(s)
- Chao Sun
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China.
| | - Jian-Gao Fan
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China.
| | - Liang Qiao
- Storr Liver Centre, Westmead Millennium Institute for Medical Research, University of Sydney, the Westmead Clinical School, Westmead Hospital, Westmead, NSW 2145, Australia.
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