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Mondal S, Rathor R, Singh SN, Suryakumar G. miRNA and leptin signaling in metabolic diseases and at extreme environments. Pharmacol Res Perspect 2024; 12:e1248. [PMID: 39017237 PMCID: PMC11253706 DOI: 10.1002/prp2.1248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 05/27/2024] [Accepted: 07/04/2024] [Indexed: 07/18/2024] Open
Abstract
The burden of growing concern about the dysregulation of metabolic processes arises due to complex interplay between environment and nutrition that has great impact on genetics and epigenetics of an individual. Thereby, any abnormality at the level of food intake regulating hormones may contribute to the development of metabolic diseases in any age group due to malnutrition, overweight, changing lifestyle, and exposure to extreme environments such as heat stress (HS), cold stress, or high altitude (HA). Hormones such as leptin, adiponectin, ghrelin, and cholecystokinin regulate appetite and satiety to maintain energy homeostasis. Leptin, an adipokine and a pleiotropic hormone, play major role in regulating the food intake, energy gain and energy expenditure. Using in silico approach, we have identified the major genes (LEP, LEPR, JAK2, STAT3, NPY, POMC, IRS1, SOCS3) that play crucial role in leptin signaling pathway. Further, eight miRNAs (hsa-miR-204-5p, hsa-miR-211-5p, hsa-miR-30, hsa-miR-3163, hsa-miR-33a-3p, hsa-miR-548, hsa-miR-561-3p, hsa-miR-7856-5p) from TargetScan 8.0 database were screened out that commonly target these genes. The role of these miRNAs should be explored as they might play vital role in regulating the appetite, energy metabolism, metabolic diseases (obesity, type 2 diabetes, cardiovascular diseases, inflammation), and to combat extreme environments. The miRNAs regulating leptin signaling and appetite may be useful for developing novel therapeutics for metabolic diseases.
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Affiliation(s)
- Samrita Mondal
- Defence Institute of Physiology and Allied SciencesDelhiIndia
| | - Richa Rathor
- Defence Institute of Physiology and Allied SciencesDelhiIndia
| | - Som Nath Singh
- Defence Institute of Physiology and Allied SciencesDelhiIndia
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2
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Tan J, Yang B, Qiu L, He R, Wu Z, Ye M, Zan L, Yang W. Bta-miR-200a Regulates Milk Fat Biosynthesis by Targeting IRS2 to Inhibit the PI3K/Akt Signal Pathway in Bovine Mammary Epithelial Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:16449-16460. [PMID: 38996051 DOI: 10.1021/acs.jafc.4c02508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
Milk fat synthesis has garnered significant attention due to its influence on the quality of milk. Recently, an increasing amount of proofs have elucidated that microRNAs (miRNAs) are important post-transcriptional factor involved in regulating gene expression and play a significant role in milk fat synthesis. MiR-200a was differentially expressed in the mammary gland tissue of dairy cows during different lactation periods, which indicated that miR-200a was a candidate miRNA involved in regulating milk fat synthesis. In our research, we investigated the potential function of miR-200a in regulating milk fat biosynthesis in bovine mammary epithelial cells (BMECs). We discovered that miR-200a inhibited cellular triacylglycerol (TAG) synthesis and suppressed lipid droplet formation; at the same time, miR-200a overexpression suppressed the mRNA and protein expression of milk fat metabolism-related genes, such as fatty acid synthase (FASN), peroxisome proliferator-activated receptor gamma (PPARγ), sterol regulatory element-binding protein 1 (SREBP1), CCAAT enhancer binding protein alpha (CEBPα), etc. However, knocking down miR-200a displayed the opposite results. We uncovered that insulin receptor substrate 2 (IRS2) was a candidate target gene of miR-200a through the bioinformatics online program TargetScan. Subsequently, it was confirmed that miR-200a directly targeted the 3'-untranslated region (3'-UTR) of IRS2 via real-time fluorescence quantitative PCR (RT-qPCR), western blot analysis, and dual-luciferase reporter gene assay. Additionally, IRS2 knockdown in BMECs has similar effects to miR-200a overexpression. Our research set up the mechanism by which miR-200a interacted with IRS2 and discovered that miR-200a targeted IRS2 and modulated the activity of the PI3K/Akt signaling pathway, thereby taking part in regulating milk fat synthesis in BMECs. Our research results provided valuable information on the molecular mechanisms for enhancing milk quality from the view of miRNA-mRNA regulatory networks.
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Affiliation(s)
- Jianbing Tan
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Benshun Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Liang Qiu
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Ruiying He
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Zhangqing Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Miaomiao Ye
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Wucai Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
- Northwest A&F University Shenzhen Research Institute, Shenzhen 518000, China
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3
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Payet T, Gabinaud E, Landrier JF, Mounien L. Role of micro-RNAs associated with adipose-derived extracellular vesicles in metabolic disorders. Obes Rev 2024; 25:e13755. [PMID: 38622087 DOI: 10.1111/obr.13755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 02/04/2024] [Accepted: 03/19/2024] [Indexed: 04/17/2024]
Abstract
Micro-RNAs have emerged as important actors in the onset of metabolic disorders including obesity or type 2 diabetes. Particularly, several micro-RNAs are known to be key modulators of lipid metabolism, glucose homeostasis, or feeding behavior. Interestingly, the role of extracellular vesicles containing micro-RNAs, especially adipose-derived extracellular vesicles, are well-documented endocrine signals and disease biomarkers. However, the role of adipose-derived extracellular vesicles on the different tissues is different and highly related to the micro-RNA content. This review provides recent data about the potential involvement of adipose-derived extracellular vesicle-containing micro-RNAs in metabolic diseases.
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Affiliation(s)
- Thomas Payet
- Aix Marseille Université, C2VN, INRAE, INSERM, Marseille, France
| | - Elisa Gabinaud
- Aix Marseille Université, C2VN, INRAE, INSERM, Marseille, France
| | - Jean-François Landrier
- Aix Marseille Université, C2VN, INRAE, INSERM, Marseille, France
- PhenoMARS Aix-Marseille Technology Platform, CriBiom, Marseille, France
| | - Lourdes Mounien
- Aix Marseille Université, C2VN, INRAE, INSERM, Marseille, France
- PhenoMARS Aix-Marseille Technology Platform, CriBiom, Marseille, France
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4
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Zacharjasz J, Sztachera M, Smuszkiewicz M, Piwecka M. Micromanaging the neuroendocrine system - A review on miR-7 and the other physiologically relevant miRNAs in the hypothalamic-pituitary axis. FEBS Lett 2024; 598:1557-1575. [PMID: 38858179 DOI: 10.1002/1873-3468.14948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/16/2024] [Accepted: 05/20/2024] [Indexed: 06/12/2024]
Abstract
The hypothalamic-pituitary axis is central to the functioning of the neuroendocrine system and essential for regulating physiological and behavioral homeostasis and coordinating fundamental body functions. The expanding line of evidence shows the indispensable role of the microRNA pathway in regulating the gene expression profile in the developing and adult hypothalamus and pituitary gland. Experiments provoking a depletion of miRNA maturation in the context of the hypothalamic-pituitary axis brought into focus a prominent involvement of miRNAs in neuroendocrine functions. There are also a few individual miRNAs and miRNA families that have been studied in depth revealing their crucial role in mediating the regulation of fundamental processes such as temporal precision of puberty timing, hormone production, fertility and reproduction capacity, and energy balance. Among these miRNAs, miR-7 was shown to be hypothalamus-enriched and the top one highly expressed in the pituitary gland, where it has a profound impact on gene expression regulation. Here, we review miRNA profiles, knockout phenotypes, and miRNA interaction (targets) in the hypothalamic-pituitary axis that advance our understanding of the roles of miRNAs in mammalian neurosecretion and related physiology.
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Affiliation(s)
- Julian Zacharjasz
- Department of Non-coding RNAs, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznań, Poland
| | - Marta Sztachera
- Department of Non-coding RNAs, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznań, Poland
| | - Michał Smuszkiewicz
- Department of Non-coding RNAs, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznań, Poland
| | - Monika Piwecka
- Department of Non-coding RNAs, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznań, Poland
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5
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Recent Advances in the Knowledge of the Mechanisms of Leptin Physiology and Actions in Neurological and Metabolic Pathologies. Int J Mol Sci 2023; 24:ijms24021422. [PMID: 36674935 PMCID: PMC9860943 DOI: 10.3390/ijms24021422] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/05/2023] [Accepted: 01/07/2023] [Indexed: 01/13/2023] Open
Abstract
Excess body weight is frequently associated with low-grade inflammation. Evidence indicates a relationship between obesity and cancer, as well as with other diseases, such as diabetes and non-alcoholic fatty liver disease, in which inflammation and the actions of various adipokines play a role in the pathological mechanisms involved in these disorders. Leptin is mainly produced by adipose tissue in proportion to fat stores, but it is also synthesized in other organs, where leptin receptors are expressed. This hormone performs numerous actions in the brain, mainly related to the control of energy homeostasis. It is also involved in neurogenesis and neuroprotection, and central leptin resistance is related to some neurological disorders, e.g., Parkinson's and Alzheimer's diseases. In peripheral tissues, leptin is implicated in the regulation of metabolism, as well as of bone density and muscle mass. All these actions can be affected by changes in leptin levels and the mechanisms associated with resistance to this hormone. This review will present recent advances in the molecular mechanisms of leptin action and their underlying roles in pathological situations, which may be of interest for revealing new approaches for the treatment of diseases where the actions of this adipokine might be compromised.
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Pandur E, Szabó I, Hormay E, Pap R, Almási A, Sipos K, Farkas V, Karádi Z. Alterations of the expression levels of glucose, inflammation, and iron metabolism related miRNAs and their target genes in the hypothalamus of STZ-induced rat diabetes model. Diabetol Metab Syndr 2022; 14:147. [PMID: 36210435 PMCID: PMC9549668 DOI: 10.1186/s13098-022-00919-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/29/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The hypothalamus of the central nervous system is implicated in the development of diabetes due to its glucose-sensing function. Dysregulation of the hypothalamic glucose-sensing neurons leads to abnormal glucose metabolism. It has been described that fractalkine (FKN) is involved in the development of hypothalamic inflammation, which may be one of the underlying causes of a diabetic condition. Moreover, iron may play a role in the pathogenesis of diabetes via the regulation of hepcidin, the iron regulatory hormone synthesis. MicroRNAs (miRNAs) are short non-coding molecules working as key regulators of gene expression, usually by inhibiting translation. Hypothalamic miRNAs are supposed to have a role in the control of energy balance by acting as regulators of hypothalamic glucose metabolism via influencing translation. METHODS Using a miRNA array, we analysed the expression of diabetes, inflammation, and iron metabolism related miRNAs in the hypothalamus of a streptozotocin-induced rat type 1 diabetes model. Determination of the effect of miRNAs altered by STZ treatment on the target genes was carried out at protein level. RESULTS We found 18 miRNAs with altered expression levels in the hypothalamus of the STZ-treated animals, which act as the regulators of mRNAs involved in glucose metabolism, pro-inflammatory cytokine synthesis, and iron homeostasis suggesting a link between these processes in diabetes. The alterations in the expression level of these miRNAs could modify hypothalamic glucose sensing, tolerance, uptake, and phosphorylation by affecting the stability of hexokinase-2, insulin receptor, leptin receptor, glucokinase, GLUT4, insulin-like growth factor receptor 1, and phosphoenolpyruvate carboxykinase mRNA molecules. Additional miRNAs were found to be altered resulting in the elevation of FKN protein. The miRNA, mRNA, and protein analyses of the diabetic hypothalamus revealed that the iron import, export, and iron storage were all influenced by miRNAs suggesting the disturbance of hypothalamic iron homeostasis. CONCLUSION It can be supposed that glucose metabolism, inflammation, and iron homeostasis of the hypothalamus are linked via the altered expression of common miRNAs as well as the increased expression of FKN, which contribute to the imbalance of energy homeostasis, the synthesis of pro-inflammatory cytokines, and the iron accumulation of the hypothalamus. The results raise the possibility that FKN could be a potential target of new therapies targeting both inflammation and iron disturbances in diabetic conditions.
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Affiliation(s)
- Edina Pandur
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary.
| | - István Szabó
- Institute of Physiology, Medical School, University of Pécs, Szigeti út 12., 7624, Pécs, Hungary
| | - Edina Hormay
- Institute of Physiology, Medical School, University of Pécs, Szigeti út 12., 7624, Pécs, Hungary
| | - Ramóna Pap
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary
| | - Attila Almási
- Institute of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary
| | - Katalin Sipos
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary
| | - Viktória Farkas
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary
| | - Zoltán Karádi
- Institute of Physiology, Medical School, University of Pécs, Szigeti út 12., 7624, Pécs, Hungary
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7
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LaPierre MP, Lawler K, Godbersen S, Farooqi IS, Stoffel M. MicroRNA-7 regulates melanocortin circuits involved in mammalian energy homeostasis. Nat Commun 2022; 13:5733. [PMID: 36175420 PMCID: PMC9522793 DOI: 10.1038/s41467-022-33367-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 09/14/2022] [Indexed: 11/09/2022] Open
Abstract
MicroRNAs (miRNAs) modulate physiological responses by repressing the expression of gene networks. We found that global deletion of microRNA-7 (miR-7), the most enriched miRNA in the hypothalamus, causes obesity in mice. Targeted deletion of miR-7 in Single-minded homolog 1 (Sim1) neurons, a critical component of the hypothalamic melanocortin pathway, causes hyperphagia, obesity and increased linear growth, mirroring Sim1 and Melanocortin-4 receptor (MC4R) haplo-insufficiency in mice and humans. We identified Snca (α-Synuclein) and Igsf8 (Immunoglobulin Superfamily Member 8) as miR-7 target genes that act in Sim1 neurons to regulate body weight and endocrine axes. In humans, MIR-7-1 is located in the last intron of HNRNPK, whose promoter drives the expression of both genes. Genetic variants at the HNRNPK locus that reduce its expression are associated with increased height and truncal fat mass. These findings demonstrate that miR-7 suppresses gene networks involved in the hypothalamic melanocortin pathway to regulate mammalian energy homeostasis.
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Affiliation(s)
- Mary P LaPierre
- Institute of Molecular Health Sciences, ETH Zürich, 8093, Zürich, Switzerland
| | - Katherine Lawler
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
| | - Svenja Godbersen
- Institute of Molecular Health Sciences, ETH Zürich, 8093, Zürich, Switzerland
| | - I Sadaf Farooqi
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
| | - Markus Stoffel
- Institute of Molecular Health Sciences, ETH Zürich, 8093, Zürich, Switzerland. .,Medical Faculty, University of Zürich, 8091, Zürich, Switzerland.
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8
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Mak KWY, Mustafa AF, Belsham DD. Neuroendocrine microRNAs linked to energy homeostasis: future therapeutic potential. Pharmacol Rep 2022; 74:774-789. [PMID: 36083576 DOI: 10.1007/s43440-022-00409-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 01/10/2023]
Abstract
The brain orchestrates whole-body metabolism through an intricate system involving interneuronal crosstalk and communication. Specifically, a key player in this complex circuitry is the hypothalamus that controls feeding behaviour, energy expenditure, body weight and metabolism, whereby hypothalamic neurons sense and respond to circulating hormones, nutrients, and chemicals. Dysregulation of these neurons contributes to the development of metabolic disorders, such as obesity and type 2 diabetes. The involvement of hypothalamic microRNAs, post-transcriptional regulators of gene expression, in the central regulation of energy homeostasis has become increasingly apparent, although not completely delineated. This review summarizes current evidence demonstrating the regulation of feeding-related neuropeptides by brain-derived microRNAs as well as the regulation of specific miRNAs by nutrients and other peripheral signals. Moreover, the involvement of microRNAs in the central nervous system control of insulin, leptin, and estrogen signal transduction is examined. Finally, the therapeutic and diagnostic potential of microRNAs for metabolic disorders will be discussed and the regulation of brain-derived microRNAs by nutrients and other peripheral signals is considered. Demonstrating a critical role of microRNAs in hypothalamic regulation of energy homeostasis is an innovative route to uncover novel biomarkers and therapeutic candidates for metabolic disorders.
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Affiliation(s)
- Kimberly W Y Mak
- Department of Physiology, University of Toronto, Medical Sciences Building 3247A, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
| | - Aws F Mustafa
- Department of Physiology, University of Toronto, Medical Sciences Building 3247A, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
| | - Denise D Belsham
- Department of Physiology, University of Toronto, Medical Sciences Building 3247A, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada.
- Department of Obstetrics and Gynaecology, University of Toronto, Toronto, ON, Canada.
- Department of Medicine, University of Toronto, Toronto, ON, Canada.
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9
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Earle A, Bessonny M, Benito J, Huang K, Parker H, Tyler E, Crawford B, Khan N, Armstrong B, Stamatikos A, Garimella S, Clay-Gilmour A. Urinary Exosomal MicroRNAs as Biomarkers for Obesity-Associated Chronic Kidney Disease. J Clin Med 2022; 11:jcm11185271. [PMID: 36142918 PMCID: PMC9502686 DOI: 10.3390/jcm11185271] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/24/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
The early detection of chronic kidney disease (CKD) is key to reducing the burden of disease and rising costs of care. This need has spurred interest in finding new biomarkers for CKD. Ideal bi-omarkers for CKD should be: easy to measure; stable; reliably detected, even when interfering substances are present; site-specific based on the type of injury (tubules vs. glomeruli); and its changes in concentration should correlate with disease risk or outcome. Currently, no single can-didate biomarker fulfills these criteria effectively, and the mechanisms underlying kidney fibrosis are not fully understood; however, there is growing evidence in support of microRNA-mediated pro-cesses. Specifically, urinary exosomal microRNAs may serve as biomarkers for kidney fibrosis. In-creasing incidences of obesity and the recognition of obesity-associated CKD have increased interest in the interplay of obesity and CKD. In this review, we provide: (1) an overview of the current scope of CKD biomarkers within obese individuals to elucidate the genetic pathways unique to obesi-ty-related CKD; (2) a review of microRNA expression in obese individuals with kidney fibrosis in the presence of comorbidities, such as diabetes mellitus and hypertension; (3) a review of thera-peutic processes, such as diet and exercise, that may influence miR-expression in obesity-associated CKD; (4) a review of the technical aspects of urinary exosome isolation; and (5) future areas of research.
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Affiliation(s)
- Angel Earle
- Department of Epidemiology & Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Madison Bessonny
- Department of Epidemiology & Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Josh Benito
- Prisma Health, Pediatric Nephrology, Greenville, SC 29615, USA
| | - Kun Huang
- Department of Food, Nutrition, and Packaging Sciences, College of Agriculture, Forestry & Life Sciences, Clemson University, Clemson, SC 29634, USA
| | - Hannah Parker
- Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Emily Tyler
- Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Brittany Crawford
- Department of Epidemiology & Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Nabeeha Khan
- Department of Epidemiology & Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Bridget Armstrong
- Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Alexis Stamatikos
- Department of Food, Nutrition, and Packaging Sciences, College of Agriculture, Forestry & Life Sciences, Clemson University, Clemson, SC 29634, USA
| | - Sudha Garimella
- Prisma Health, Pediatric Nephrology, Greenville, SC 29615, USA
| | - Alyssa Clay-Gilmour
- Department of Epidemiology & Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Correspondence:
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10
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Ashmawy AI, El-Abhar HS, Abdallah DM, Ali MA. Chloroquine modulates the sulforaphane anti-obesity mechanisms in a high-fat diet model: Role of JAK-2/ STAT-3/ SOCS-3 pathway. Eur J Pharmacol 2022; 927:175066. [PMID: 35643302 DOI: 10.1016/j.ejphar.2022.175066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 12/13/2022]
Abstract
The phytochemical sulforaphane (SFN) has been studied for its potential anti-obesity effect, but neither its molecular targets nor its interaction with the antimalarial drug chloroquine (CQ) has been fully delineated. Therefore, high-fat diet (HFD) obese rats were randomly allocated into one of five groups and were left untreated or gavaged orally with SFN (0.5 or 1 mg/kg), CQ (5 mg/kg), or their combination (0.5/5 mg/kg) for six successive weeks to assess their potential interaction and the enrolled mechanisms. SFN effectively reduced the HFD-induced weight gain, blood glucose, and serum leptin levels, and improved lipid profile. On the molecular level, SFN inhibited the lipogenesis-related enzymes, namely sterol regulatory element-binding protein (SREBP)-1c, fatty acid synthase (FAS), and acetyl-CoA carboxylase (ACC) in both liver and visceral white adipose tissue (vWAT) of HFD obese rats. SFN also turned off the inflammatory pathway conserved Janus kinase/signaling transducers and activators of transcription/suppressor of cytokine signaling (JAK-2/STAT-3/SOCS-3) in these tissues, as well as the inflammatory markers nuclear factor-kappa (NF-κ) B and interleukin (IL)-22 in serum. In contrast, SFN downregulated the gene expression of microRNA (miR-200a), while significantly increasing the autophagic parameters; viz., beclin-1, autophagy-related protein (ATG)-7, and microtubule-associated protein 2 light chain 3 (LC3-II) in both liver and vWAT. On most of the parameters mentioned above, treatment with CQ solely produced a satisfactory effect and intensified the low dose of SFN in the combination regimen. These findings demonstrated the beneficial effects of using CQ as an add-on anti-obesity medicine to SFN.
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Affiliation(s)
- Ahmed I Ashmawy
- Department of Pharmacology & Therapeutics, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, Egypt
| | - Hanan S El-Abhar
- Department of Pharmacology, Toxicology & Biochemistry, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Dalaal M Abdallah
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Mennatallah A Ali
- Department of Pharmacology & Therapeutics, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, Egypt
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11
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Chalmers JA, Dalvi PS, Loganathan N, McIlwraith EK, Wellhauser L, Nazarians-Armavil A, Eversley JA, Mohan H, Stahel P, Dash S, Wheeler MB, Belsham DD. Hypothalamic miR-1983 Targets Insulin Receptor β and the Insulin-mediated miR-1983 Increase Is Blocked by Metformin. Endocrinology 2022; 163:6433013. [PMID: 34919671 PMCID: PMC8682955 DOI: 10.1210/endocr/bqab241] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Indexed: 01/13/2023]
Abstract
MicroRNAs (miRNAs) expressed in the hypothalamus are capable of regulating energy balance and peripheral metabolism by inhibiting translation of target messenger RNAs (mRNAs). Hypothalamic insulin resistance is known to precede that in the periphery, thus a critical unanswered question is whether central insulin resistance creates a specific hypothalamic miRNA signature that can be identified and targeted. Here we show that miR-1983, a unique miRNA, is upregulated in vitro in 2 insulin-resistant immortalized hypothalamic neuronal neuropeptide Y-expressing models, and in vivo in hyperinsulinemic mice, with a concomitant decrease of insulin receptor β subunit protein, a target of miR-1983. Importantly, we demonstrate that miR-1983 is detectable in human blood serum and that its levels significantly correlate with blood insulin and the homeostatic model assessment of insulin resistance. Levels of miR-1983 are normalized with metformin exposure in mouse hypothalamic neuronal cell culture. Our findings provide evidence for miR-1983 as a unique biomarker of cellular insulin resistance, and a potential therapeutic target for prevention of human metabolic disease.
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Affiliation(s)
- Jennifer A Chalmers
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Prasad S Dalvi
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Current Affiliation: Prasad S. Dalvi is now at Morosky College of Health Professions and Sciences, Gannon University, Erie, Pennsylvania 16541, USA
| | - Neruja Loganathan
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Emma K McIlwraith
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Leigh Wellhauser
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | | | - Judith A Eversley
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Haneesha Mohan
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Priska Stahel
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Satya Dash
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Toronto General Hospital, University Health Network, Toronto, Ontario M5G 2C4, Canada
| | - Michael B Wheeler
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Toronto General Hospital, University Health Network, Toronto, Ontario M5G 2C4, Canada
| | - Denise D Belsham
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Department of Obstetrics and Gynecology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Correspondence: Denise D. Belsham, PhD, Department of Physiology, University of Toronto, Medical Sciences Bldg 3247A, 1 Kings College Cir, Toronto, ON, M5S 1A8, Canada.
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12
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Murgia N, Ma Y, Najam SS, Liu Y, Przybys J, Guo C, Konopka W, Vinnikov IA. In Vivo Reductionist Approach Identifies miR-15a Protecting Mice From Obesity. Front Endocrinol (Lausanne) 2022; 13:867929. [PMID: 35873003 PMCID: PMC9302447 DOI: 10.3389/fendo.2022.867929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
Obesity is a growing medical and social problem worldwide. The control of energy homeostasis in the brain is achieved by various regions including the arcuate hypothalamic nucleus (ARH). The latter comprises a number of neuronal populations including the first order metabolic neurons, appetite-stimulating agouti-related peptide (AgRP) neurons and appetite-suppressing proopiomelanocortin (POMC) neurons. Using an in vivo reductionist approach and POMCCre-dependent CRISPR-Cas9, we demonstrate that miR-15a-5p protects from obesity. Moreover, we have identified Bace1, a gene previously linked to energy metabolism imbalance, as a direct target of miR-15a-5p. This work warrants further investigations of non-coding RNA-mediated regulation of energy homeostasis and might contribute to the development of novel therapeutic approaches to treat metabolic diseases.
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Affiliation(s)
- Nicola Murgia
- Laboratory of Molecular Neurobiology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yuan Ma
- Laboratory of Molecular Neurobiology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Syeda Sadia Najam
- Laboratory of Molecular Neurobiology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yu Liu
- Laboratory of Molecular Neurobiology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Joanna Przybys
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Chenkai Guo
- Laboratory of Molecular Neurobiology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Witold Konopka
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
- Laboratory of Neuroplasticity and Metabolism, Department of Life Sciences and Biotechnology, Łukasiewicz PORT Polish Center for Technology Development, Wrocław, Poland
| | - Ilya A. Vinnikov
- Laboratory of Molecular Neurobiology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Ilya A. Vinnikov,
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13
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Naudhani M, Thakur K, Ni ZJ, Zhang JG, Wei ZJ. Formononetin reshapes the gut microbiota, prevents progression of obesity and improves host metabolism. Food Funct 2021; 12:12303-12324. [PMID: 34821251 DOI: 10.1039/d1fo02942h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Formononetin (FMNT) is an isoflavone that has been studied for its anti-hyperglycemic and anti-diabetic effects. However, the effect of FMNT on gut dysbiosis and metabolic complications associated with western-style diet consumption has not been reported yet. This study aimed to investigate how FMNT can reshape the gut microbiota at a specific dosage and ameliorate the symptoms of obesity-related metabolic disorders in both genders. Results indicate that FMNT at 60 mg per kg bodyweight dosage can effectively control body weight, hyperglycemia, and insulin resistance, leptin levels and improve HDL to LDL ratio. FMNT treatment suppressed Porphyromonadaceae (Uncultured Alistipes) and augmented maximum genera from families Lachnospiraceae and Clostridiacea, but at species level, formononetin increased Clostridium aldenense, Clostridiaceae unclassified, Eubacterium plexicaum; acetate and butyrate-producing bacteria. Moreover, formononetin regulated the expression of specific liver miRNA involved in obesity and down-regulated mRNA expression levels of pro-inflammatory cytokines IL-6, IL-22 and TNF-α. Additionally, FMNT maintained intestinal membrane integrity by regulating the expression of Muc-2 and occludin. Our findings indicate that FMNT could be a potential prebiotic that can effectively regulate the gut microbiota, improve host metabolism and systemic inflammation, and prevent deleterious effects of a western-style diet by elevating acetate lactate and lactate butyrate producers.
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Affiliation(s)
- Mahrukh Naudhani
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China. .,Department of Microbiology, Balochistan University of Information Technology Engineering and management sciences, Quetta 87300, Pakistan
| | - Kiran Thakur
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China. .,Collaborative Innovation Center for Food Production and Safety, School of Biological Science and Engineering, North Minzu University, Yinchuan 750021, People's Republic of China.
| | - Zhi-Jing Ni
- Collaborative Innovation Center for Food Production and Safety, School of Biological Science and Engineering, North Minzu University, Yinchuan 750021, People's Republic of China.
| | - Jian-Guo Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China. .,Collaborative Innovation Center for Food Production and Safety, School of Biological Science and Engineering, North Minzu University, Yinchuan 750021, People's Republic of China.
| | - Zhao-Jun Wei
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China. .,Collaborative Innovation Center for Food Production and Safety, School of Biological Science and Engineering, North Minzu University, Yinchuan 750021, People's Republic of China.
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14
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Liang C, Han M, Zhou Z, Liu Y, He X, Jiang Y, Ouyang Y, Hong Q, Chu M. Hypothalamic Transcriptome Analysis Reveals the Crucial MicroRNAs and mRNAs Affecting Litter Size in Goats. Front Vet Sci 2021; 8:747100. [PMID: 34790713 PMCID: PMC8591166 DOI: 10.3389/fvets.2021.747100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 10/08/2021] [Indexed: 12/28/2022] Open
Abstract
The hypothalamus was the coordination center of the endocrine system, which played an important role in goat reproduction. However, the molecular mechanism of hypothalamus regulating litter size in goats was still poorly understood. This study aims to investigate the key functional genes associated with prolificacy by hypothalamus transcriptome analysis of goats. In this research, an integrated analysis of microRNAs (miRNAs)-mRNA was conducted using the hypothalamic tissue of Yunshang black goats in the follicular stage. A total of 72,220 transcripts were detected in RNA-seq. Besides, 1,836 differentially expressed genes (DEGs) were identified between high fecundity goats at the follicular phase (FP-HY) and low fecundity goats at the follicular phase (FP-LY). DEGs were significantly enriched in 71 Gene Ontology (GO) terms and 8 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. The transcriptome data suggested that DEGs such as BMPR1B, FGFR1, IGF1 and CREB1 are directly or indirectly involved in many processes like hypothalamic gonadal hormone secretion. The miRNA-seq identified 1,837 miRNAs, of which 28 differentially expressed miRNAs (DEMs). These DEMs may affect the nerve cells survival of goat hypothalamic regulating the function of target genes and further affect the hormone secretion activities related to reproduction. They were enriched in prolactin signaling pathway, Jak-STAT signaling pathway and GnRH signaling pathway, as well as various metabolic pathways. Integrated analysis of DEMs and DEGs showed that 87 DEGs were potential target genes of 28 DEMs. After constructing a miRNA-mRNA pathway network, we identified several mRNA-miRNAs pairs by functional enrichment analysis, which was involved in hypothalamic nerve apoptosis. For example, NTRK3 was co-regulated by Novel-1187 and Novel-566, as well as another target PPP1R13L regulated by Novel-566. These results indicated that these key genes and miRNAs may play an important role in the development of goat hypothalamus and represent candidate targets for further research. This study provides a basis for further explanation of the basic molecular mechanism of hypothalamus, but also provides a new idea for a comprehensive understanding of prolificacy characteristics in Yunshang black goats.
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Affiliation(s)
- Chen Liang
- College of Animal Science, Shanxi Agricultural University, Taigu, China
| | - Miaoceng Han
- College of Animal Science, Shanxi Agricultural University, Taigu, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Zuyang Zhou
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Yufang Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Xiaoyun He
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Yanting Jiang
- Yunnan Animal Science and Veterinary Institute, Kunming, China
| | - Yina Ouyang
- Yunnan Animal Science and Veterinary Institute, Kunming, China
| | - Qionghua Hong
- Yunnan Animal Science and Veterinary Institute, Kunming, China
| | - Mingxing Chu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
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15
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Lieu CV, Loganathan N, Belsham DD. Mechanisms Driving Palmitate-Mediated Neuronal Dysregulation in the Hypothalamus. Cells 2021; 10:3120. [PMID: 34831343 PMCID: PMC8617942 DOI: 10.3390/cells10113120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 12/17/2022] Open
Abstract
The hypothalamus maintains whole-body homeostasis by integrating information from circulating hormones, nutrients and signaling molecules. Distinct neuronal subpopulations that express and secrete unique neuropeptides execute the individual functions of the hypothalamus, including, but not limited to, the regulation of energy homeostasis, reproduction and circadian rhythms. Alterations at the hypothalamic level can lead to a myriad of diseases, such as type 2 diabetes mellitus, obesity, and infertility. The excessive consumption of saturated fatty acids can induce neuroinflammation, endoplasmic reticulum stress, and resistance to peripheral signals, ultimately leading to hyperphagia, obesity, impaired reproductive function and disturbed circadian rhythms. This review focuses on the how the changes in the underlying molecular mechanisms caused by palmitate exposure, the most commonly consumed saturated fatty acid, and the potential involvement of microRNAs, a class of non-coding RNA molecules that regulate gene expression post-transcriptionally, can result in detrimental alterations in protein expression and content. Studying the involvement of microRNAs in hypothalamic function holds immense potential, as these molecular markers are quickly proving to be valuable tools in the diagnosis and treatment of metabolic disease.
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Affiliation(s)
- Calvin V. Lieu
- Department of Physiology, University of Toronto, Medical Sciences Building 3247A, 1 King’s College Circle, Toronto, ON M5S 1A8, Canada; (C.V.L.); (N.L.)
| | - Neruja Loganathan
- Department of Physiology, University of Toronto, Medical Sciences Building 3247A, 1 King’s College Circle, Toronto, ON M5S 1A8, Canada; (C.V.L.); (N.L.)
| | - Denise D. Belsham
- Department of Physiology, University of Toronto, Medical Sciences Building 3247A, 1 King’s College Circle, Toronto, ON M5S 1A8, Canada; (C.V.L.); (N.L.)
- Departments of Obstetrics/Gynecology and Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
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16
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Perdoncin M, Konrad A, Wyner JR, Lohana S, Pillai SS, Pereira DG, Lakhani HV, Sodhi K. A Review of miRNAs as Biomarkers and Effect of Dietary Modulation in Obesity Associated Cognitive Decline and Neurodegenerative Disorders. Front Mol Neurosci 2021; 14:756499. [PMID: 34690698 PMCID: PMC8529023 DOI: 10.3389/fnmol.2021.756499] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/10/2021] [Indexed: 12/12/2022] Open
Abstract
There has been a progressive increase in the prevalence of obesity and its comorbidities such as type 2 diabetes and cardiovascular diseases worldwide. Recent studies have suggested that the crosstalk between adipose tissue and central nervous system (CNS), through cellular mediators and signaling pathways, may causally link obesity with cognitive decline and give rise to neurodegenerative disorders. Several mechanisms have been proposed in obesity, including inflammation, oxidative stress, insulin resistance, altered lipid and cholesterol homeostasis, which may result in neuroinflammation, altered brain insulin signaling, amyloid-beta (Aβ) deposition and neuronal cell death. Since obesity is associated with functional and morphological alterations in the adipose tissues, the resulting peripheral immune response augments the development and progression of cognitive decline and increases susceptibility of neurodegenerative disorders, such as Alzheimer's Disease (AD) and Parkinson's Disease (PD). Studies have also elucidated an important role of high fat diet in the exacerbation of these clinical conditions. However, the underlying factors that propel and sustain this obesity associated cognitive decline and neurodegeneration, remains highly elusive. Moreover, the mechanisms linking these phenomena are not well-understood. The cumulative line of evidence have demonstrated an important role of microRNAs (miRNAs), a class of small non-coding RNAs that regulate gene expression and transcriptional changes, as biomarkers of pathophysiological conditions. Despite the lack of utility in current clinical practices, miRNAs have been shown to be highly specific and sensitive to the clinical condition being studied. Based on these observations, this review aims to assess the role of several miRNAs and aim to elucidate underlying mechanisms that link obesity with cognitive decline and neurodegenerative disorders. Furthermore, this review will also provide evidence for the effect of dietary modulation which can potentially ameliorate cognitive decline and neurodegenerative diseases associated with obesity.
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Affiliation(s)
| | | | | | | | | | | | | | - Komal Sodhi
- Department of Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
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17
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Effects of exercise and diet intervention on appetite-regulating hormones associated with miRNAs in obese children. Eat Weight Disord 2021; 26:457-465. [PMID: 32072570 DOI: 10.1007/s40519-020-00869-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 02/05/2020] [Indexed: 02/07/2023] Open
Abstract
AIMS This study investigated the effects of exercise and diet intervention on appetite-regulating hormones and subjective appetite changes in obese children and examined expressions of specific key microRNAs (miRNA, miR). METHODS 16 obese children were included in a training program consisting of exercise and diet intervention for 6 weeks. Before and after the intervention, fasting blood was collected to determine appetite-regulating hormones (leptin, ghrelin, and orexin) and miRNA (miR-103a-3p and miR-200a-3p) levels; eating behavior of the children was reported using the Children Eating Behavior Questionnaire (CEBQ). RESULTS The level of orexin was significantly decreased (P < 0.05), while ghrelin was significantly enhanced (P < 0.05) after 6 weeks. The scores of food responsiveness (FR) and enjoyment of food (EF) of the CEBQ were significantly decreased (P < 0.05) after intervention. The changes of leptin and that of SR were significantly correlated (r = - 0.455, P < 0.05), and the correlation between the alterations of orexin and that of EF was moderate with significance (r = 0.625, P < 0.05). miR-103a-3p expression was not statistically changed, while miR-200a-3p was significantly inhibited after 6-week intervention (P < 0.05). The correlation between relative changes of miR-103a-3p and that of leptin and orexin were both with significant difference (r = 0.413, P < 0.05; r = 0.409, P < 0.05), whereas the alterations of miR-200a-3p were not correlative with hormones or appetite sensation. CONCLUSION Exercise combined with diet intervention for 6 weeks was effective in regulating appetite sensations and hormones in obese children, and miR-103a-3p and miR-200a-3p might provide a foundation for target biomarkers of appetite trait in modulating the energy balance control by exercise and dietary intervention. LEVEL OF EVIDENCE Level III, case-control analytic study. TRIAL REGISTRATION The trial was registered in ClinicalTrials.gov (NCT03762629).
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18
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Mukhopadhyay D, Mussa BM. Identification of Novel Hypothalamic MicroRNAs as Promising Therapeutics for SARS-CoV-2 by Regulating ACE2 and TMPRSS2 Expression: An In Silico Analysis. Brain Sci 2020; 10:E666. [PMID: 32992681 PMCID: PMC7601472 DOI: 10.3390/brainsci10100666] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/17/2020] [Accepted: 09/22/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Neuroinvasion of severe acute respiratory syndrome coronavirus (SARS-CoV) is well documented and, given the similarities between this virus and SARS-CoV-2, it seems that the neurological impairment that is associated with coronavirus disease 2019 (COVID-19) is due to SARS-CoV-2 neuroinvasion. Hypothalamic circuits are exposed to the entry of the virus via the olfactory bulb and interact centrally with crucial respiratory nuclei. Hypothalamic microRNAs are considered as potential biomarkers and modulators for various diseases and future therapeutic targets. The present study aims to investigate the microRNAs that regulate the expression of hypothalamic angiotensin-converting enzyme 2 (ACE2) and transmembrane serine protease 2 (TMPRSS2), essential elements for SARS-CoV-2 cell entry. METHODS To determine potential hypothalamic miRNAs that can directly bind to ACE2 and TMPRSS2, multiple target bioinformatics prediction algorithms were used, including miRBase, Target scan, and miRWalk2.029. RESULTS Our in silico analysis has revealed that, although there are over 5000 hypothalamic miRNAs, around 31 miRNAs and 29 miRNAs have shown binding sites and strong binding capacity against ACE2 and TMPRSS2, respectively. CONCLUSION These novel potential hypothalamic miRNAs can be used to identify new therapeutic targets to treat neurological symptoms in COVID-19 patients via regulation of ACE2 and TMPRSS2 expression.
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Affiliation(s)
- Debasmita Mukhopadhyay
- Biomedical & Chemical Engineering Department, American University of Sharjah, Sharjah 26666, UAE;
| | - Bashair M. Mussa
- Basic Medical Science Department, College of Medicine, University of Sharjah, Sharjah 27272, UAE
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19
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Wei J, Hao Q, Chen C, Li J, Han X, Lei Z, Wang T, Wang Y, You X, Chen X, Li H, Ding Y, Huang W, Hu Y, Lin S, Shen H, Lin Y. Epigenetic repression of miR-17 contributed to di(2-ethylhexyl) phthalate-triggered insulin resistance by targeting Keap1-Nrf2/miR-200a axis in skeletal muscle. Theranostics 2020; 10:9230-9248. [PMID: 32802189 PMCID: PMC7415800 DOI: 10.7150/thno.45253] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 07/13/2020] [Indexed: 12/15/2022] Open
Abstract
Rationale: Skeletal muscle insulin resistance is detectable before type 2 diabetes is diagnosed. Exposure to di(2-ethylhexyl) phthalate (DEHP), a typical environmental endocrine-disrupting chemical, is a novel risk factor for insulin resistance and type 2 diabetes. This study aimed to explore insulin signaling regulatory pathway in skeletal muscle of the DEHP-induced insulin-resistant mice and to investigate potential therapeutic strategies for treating insulin resistance. Methods: C57BL/6J male mice were exposed to 2 mg/kg/day DEHP for 15 weeks. Whole-body glucose homeostasis, oxidative stress and deregulated miRNA-mediated molecular transduction in skeletal muscle were examined. microRNA (miRNA) interventions based on lentiviruses and adeno-associated viruses 9 (AAV9) were performed. Results: Dnmt3a-dependent promoter methylation and lncRNA Malat1-related sponge functions cooperatively downregulated miR-17 in DEHP-exposed skeletal muscle cells. DEHP suppressed miR-17 to disrupt the Keap1-Nrf2 redox system and to activate oxidative stress-responsive Txnip in skeletal muscle. Oxidative stress upregulated miR-200a, which directly targets the 3'UTR of Insr and Irs1, leading to hindered insulin signaling and impaired insulin-dependent glucose uptake in skeletal muscle, ultimately promoting the development of insulin resistance. AAV9-induced overexpression of miR-17 and lentivirus-mediated silencing of miR-200a in skeletal muscle ameliorated whole-body insulin resistance in DEHP-exposed mice. Conclusions: The miR-17/Keap1-Nrf2/miR-200a axis contributed to DEHP-induced insulin resistance. miR-17 is a positive regulator, whereas miR-200a is a negative regulator of insulin signaling in skeletal muscle, and both miRNAs have the potential to become therapeutic targets for preventing and treating insulin resistance or type 2 diabetes.
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Affiliation(s)
- Jie Wei
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Qiongyu Hao
- Division of Cancer Research and Training, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, David Geffen UCLA School of Medicine, and UCLA Jonsson Comprehensive Cancer Center, 1748 E. 118th Street, Los Angeles, CA, 90059, USA
| | - Chengkun Chen
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Juan Li
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Xikui Han
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Zhao Lei
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Tao Wang
- The First Affiliated Hospital of Xiamen University, Xiamen, 361003, China
| | - Yinan Wang
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Xiang You
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Xiaoxuan Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Huasheng Li
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Yuxin Ding
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Weihao Huang
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Yangyang Hu
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Shuirong Lin
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Heqing Shen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Yi Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China
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20
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Zhang Z, Tang J, Di R, Liu Q, Wang X, Gan S, Zhang X, Zhang J, Chu M, Hu W. Integrated Hypothalamic Transcriptome Profiling Reveals the Reproductive Roles of mRNAs and miRNAs in Sheep. Front Genet 2020; 10:1296. [PMID: 32010181 PMCID: PMC6974689 DOI: 10.3389/fgene.2019.01296] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 11/25/2019] [Indexed: 12/30/2022] Open
Abstract
Early studies have provided a wealth of information on the functions of microRNAs (miRNAs). However, less is known regarding their functions in the hypothalamus involved in sheep reproduction. To explore the potential roles of hypothalamic messenger RNAs (mRNAs) and miRNAs in sheep without FecB mutation, in total, 172 and 235 differentially expressed genes (DEGs) and 42 and 79 differentially expressed miRNAs (DE miRNAs) were identified in polytocous sheep in the follicular phase versus monotocous sheep in the follicular phase (PF vs. MF) and polytocous sheep in the luteal phase versus monotocous sheep in the luteal phase (PL vs. ML), respectively, using RNA sequencing. We also identified several key mRNAs (e.g., POMC, GNRH1, PRL, GH, TRH, and TTR) and mRNA–miRNAs pairs (e.g., TRH co-regulated by oar-miR-379-5p, oar-miR-30b, oar-miR-152, oar-miR-495-3p, oar-miR-143, oar-miR-106b, oar-miR-218a, oar-miR-148a, and PRL regulated by oar-miR-432) through functional enrichment analysis, and the identified mRNAs and miRNAs may function, conceivably, by influencing gonadotropin-releasing hormone (GnRH) activities and nerve cell survival associated with reproductive hormone release via direct and indirect ways. This study represents an integral analysis between mRNAs and miRNAs in sheep hypothalamus and provides a valuable resource for elucidating sheep prolificacy.
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Affiliation(s)
- Zhuangbiao Zhang
- Key Laboratory of Animal Genetics and Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jishun Tang
- Key Laboratory of Animal Genetics and Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China.,Institute of Animal Husbandry and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Ran Di
- Key Laboratory of Animal Genetics and Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qiuyue Liu
- Key Laboratory of Animal Genetics and Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiangyu Wang
- Key Laboratory of Animal Genetics and Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shangquan Gan
- State Key Laboratory of Sheep Genetic Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
| | | | - Jinlong Zhang
- Tianjin Institute of Animal Sciences, Tianjin, China
| | - Mingxing Chu
- Key Laboratory of Animal Genetics and Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wenping Hu
- Key Laboratory of Animal Genetics and Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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21
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Chen Y, Zhao Y, Jin W, Li Y, Zhang Y, Ma X, Sun G, Han R, Tian Y, Li H, Kang X, Li G. MicroRNAs and their regulatory networks in Chinese Gushi chicken abdominal adipose tissue during postnatal late development. BMC Genomics 2019; 20:778. [PMID: 31653195 PMCID: PMC6815035 DOI: 10.1186/s12864-019-6094-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 09/10/2019] [Indexed: 12/13/2022] Open
Abstract
Background Abdominal fat is the major adipose tissue in chickens. The growth status of abdominal fat during postnatal late development ultimately affects meat yield and quality in chickens. MicroRNAs (miRNAs) are endogenous small noncoding RNAs that regulate gene expression at the post-transcriptional level. Studies have shown that miRNAs play an important role in the biological processes involved in adipose tissue development. However, few studies have investigated miRNA expression profiles and their interaction networks associated with the postnatal late development of abdominal adipose tissue in chickens. Results We constructed four small RNA libraries from abdominal adipose tissue obtained from Chinese domestic Gushi chickens at 6, 14, 22, and 30 weeks. A total of 507 known miRNAs and 53 novel miRNAs were identified based on the four small RNA libraries. Fifty-one significant differentially expressed (SDE) miRNAs were identified from six combinations by comparative analysis, and the expression patterns of these SDE miRNAs were divided into six subclusters by cluster analysis. Gene ontology enrichment analysis showed that the SDE miRNAs were primarily involved in the regulation of fat cell differentiation, regulation of lipid metabolism, regulation of fatty acid metabolism, and unsaturated fatty acid metabolism in the lipid metabolism- or deposition-related biological process categories. In addition, we constructed differentially expressed miRNA–mRNA interaction networks related to abdominal adipose development. The results showed that miRNA families, such as mir-30, mir-34, mir-199, mir-8, and mir-146, may have key roles in lipid metabolism, adipocyte proliferation and differentiation, and cell junctions during abdominal adipose tissue development in chickens. Conclusions This study determined the dynamic miRNA transcriptome and characterized the miRNA–mRNA interaction networks in Gushi chicken abdominal adipose tissue for the first time. The results expanded the number of known miRNAs in abdominal adipose tissue and provide novel insights and a valuable resource to elucidate post-transcriptional regulation mechanisms during postnatal late development of abdominal adipose tissue in chicken.
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Affiliation(s)
- Yi Chen
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Yinli Zhao
- College of Biological Engineering, Henan University of Technology, Zheng zhou, Henan Province, 450001, People's Republic of China
| | - Wenjiao Jin
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Yuanfang Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Yanhua Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Xuejie Ma
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Guirong Sun
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Ruili Han
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Yadong Tian
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Hong Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Xiangtao Kang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China
| | - Guoxi Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zheng zhou, Henan Province, 450002, People's Republic of China.
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Chen Z, Chu S, Wang X, Sun Y, Xu T, Mao Y, Loor JJ, Yang Z. MiR-16a Regulates Milk Fat Metabolism by Targeting Large Tumor Suppressor Kinase 1 ( LATS1) in Bovine Mammary Epithelial Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:11167-11178. [PMID: 31542928 DOI: 10.1021/acs.jafc.9b04883] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Milk contains a number of beneficial fatty acids including short and medium chain and unsaturated conjugated and nonconjugated fatty acids. In this study, microRNA sequencing of mammary tissue collected in early-, peak-, mid-, and late-lactation periods was performed to determine the miRNA expression profiles. miR-16a was one of the differentially expressed miRNA and was selected for in-depth functional studies pertaining to fatty acid metabolism. The mimic of miR-16a impaired fat metabolism [triacylglycerol (TAG) and cholesterol] while knock-down of miR-16a promoted fat metabolism in vitro in bovine mammary epithelial cells (BMECs). In addition, the in vitro work with BMECs also revealed that miR-16a had a negative effect on the cellular concentration of cis 9-C18:1, total C18:1, C20:1, and C22:1 and long-chain polyunsaturated fatty acids. Therefore, these data suggesting a negative effect on fatty acid metabolism extend the discovery of the key role of miR-16a in mediating adipocyte differentiation. Through a combination of bioinformatics analysis, target gene 3' UTR luciferase reporter assays, and western blotting, we identified large tumor suppressor kinase 1 (LATS1) as a target of miR-16a. Transfection of siRNA-LATS1 into BMECs led to increases in TAG, cholesterol, and cellular fatty acid concentrations, suggesting a positive role of LATS1 in mammary cell fatty acid metabolism. In summary, data suggest that miR-16a regulates biological processes associated with intracellular TAG, cholesterol, and unsaturated fatty acid synthesis through LATS1. These data provide a theoretical and experimental framework for further clarifying the regulation of lipid metabolism in mammary cells of dairy cows.
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Affiliation(s)
- Zhi Chen
- College of Animal Science and Technology , Yangzhou University , Yangzhou 225009 , PR China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education , Yangzhou University , Yangzhou 225009 , China
| | - Shuangfeng Chu
- College of Animal Science and Technology , Yangzhou University , Yangzhou 225009 , PR China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education , Yangzhou University , Yangzhou 225009 , China
| | - Xiaolong Wang
- College of Animal Science and Technology , Yangzhou University , Yangzhou 225009 , PR China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education , Yangzhou University , Yangzhou 225009 , China
| | - Yujia Sun
- College of Animal Science and Technology , Yangzhou University , Yangzhou 225009 , PR China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education , Yangzhou University , Yangzhou 225009 , China
| | - Tianle Xu
- College of Animal Science and Technology , Yangzhou University , Yangzhou 225009 , PR China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education , Yangzhou University , Yangzhou 225009 , China
| | - Yongjiang Mao
- College of Animal Science and Technology , Yangzhou University , Yangzhou 225009 , PR China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education , Yangzhou University , Yangzhou 225009 , China
| | - Juan J Loor
- Mammalian Nutrition Physiology Genomics, Department of Animal Sciences and Division of Nutritional Sciences , University of Illinois , Urbana , Illinois 61801 , United States
| | - Zhangping Yang
- College of Animal Science and Technology , Yangzhou University , Yangzhou 225009 , PR China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education , Yangzhou University , Yangzhou 225009 , China
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23
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Ghasemi A, Hashemy SI, Azimi-Nezhad M, Dehghani A, Saeidi J, Mohtashami M. The cross-talk between adipokines and miRNAs in health and obesity-mediated diseases. Clin Chim Acta 2019; 499:41-53. [PMID: 31476303 DOI: 10.1016/j.cca.2019.08.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 08/28/2019] [Accepted: 08/28/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Multiple studies have revealed a direct correlation between obesity and the development of multiple comorbidities, including metabolic diseases, cardiovascular disorders, chronic inflammatory disease, and cancers. However, the molecular mechanism underlying the link between obesity and the progression of these diseases is not completely understood. Adipokines are factors that are secreted by adipocytes and play a key role in whole body homeostasis. Collaboratively, miRNAs are suggested to have key functions in the development of obesity and obesity-related disorders. Based on recently emerging evidence, obesity leads to the dysregulation of both adipokines and obesity-related miRNAs. In the present study, we described the correlations between obesity and its related diseases that are mediated by the mutual regulatory effects of adipokines and miRNAs. METHODS We reviewed current knowledge of the modulatory effects of adipokines on miRNAs activity and their relevant functions in pathological conditions and vice versa. RESULTS Our research reveals the ability of adipokines and miRNAs to control the expression and activity of the other class of molecules, and their effects on obesity-related diseases. CONCLUSIONS This study may help researchers develop a roadmap for future investigations and provide opportunities to develop new therapeutic and diagnostic methods for treating obesity-related diseases.
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Affiliation(s)
- Ahmad Ghasemi
- Non-communicable Disease Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran.
| | - Seyed Isaac Hashemy
- Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Mohsen Azimi-Nezhad
- Non-communicable Disease Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran; UMR INSERM U 1122, IGE-PCV, Interactions Gène-Environment en Physiopathologie Cardiovascular Université de Lorraine, France
| | - Alireza Dehghani
- Institute of Biochemistry and Molecular Biology, University of Bonn, Bonn, Germany
| | - Jafar Saeidi
- Department of Physiology, School of Basic Science, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
| | - Mahnaz Mohtashami
- Department of Biology, School of Basic Science, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
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24
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Wróblewski A, Strycharz J, Świderska E, Drewniak K, Drzewoski J, Szemraj J, Kasznicki J, Śliwińska A. Molecular Insight into the Interaction between Epigenetics and Leptin in Metabolic Disorders. Nutrients 2019; 11:nu11081872. [PMID: 31408957 PMCID: PMC6723573 DOI: 10.3390/nu11081872] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/07/2019] [Accepted: 08/09/2019] [Indexed: 12/16/2022] Open
Abstract
Nowadays, it is well-known that the deregulation of epigenetic machinery is a common biological event leading to the development and progression of metabolic disorders. Moreover, the expression level and actions of leptin, a vast adipocytokine regulating energy metabolism, appear to be strongly associated with epigenetics. Therefore, the aim of this review was to summarize the current knowledge of the epigenetic regulation of leptin as well as the leptin-induced epigenetic modifications in metabolic disorders and associated phenomena. The collected data indicated that the deregulation of leptin expression and secretion that occurs during the course of metabolic diseases is underlain by a variation in the level of promoter methylation, the occurrence of histone modifications, along with miRNA interference. Furthermore, leptin was proven to epigenetically regulate several miRNAs and affect the activity of the histone deacetylases. These epigenetic modifications were observed in obesity, gestational diabetes, metabolic syndrome and concerned various molecular processes like glucose metabolism, insulin sensitivity, liver fibrosis, obesity-related carcinogenesis, adipogenesis or fetal/early postnatal programming. Moreover, the circulating miRNA profiles were associated with the plasma leptin level in metabolic syndrome, and miRNAs were found to be involved in hypothalamic leptin sensitivity. In summary, the evidence suggests that leptin is both a target and a mediator of epigenetic changes that develop in numerous tissues during metabolic disorders.
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Affiliation(s)
- Adam Wróblewski
- Department of Medical Biochemistry, Medical University of Lodz, 6/8 Mazowiecka Str., 92-215 Lodz, Poland.
| | - Justyna Strycharz
- Department of Medical Biochemistry, Medical University of Lodz, 6/8 Mazowiecka Str., 92-215 Lodz, Poland
| | - Ewa Świderska
- Department of Medical Biochemistry, Medical University of Lodz, 6/8 Mazowiecka Str., 92-215 Lodz, Poland
| | - Karolina Drewniak
- Student Scientific Society of the Civilization Diseases, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland
| | - Józef Drzewoski
- Central Teaching Hospital of the Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland
| | - Janusz Szemraj
- Department of Medical Biochemistry, Medical University of Lodz, 6/8 Mazowiecka Str., 92-215 Lodz, Poland
| | - Jacek Kasznicki
- Department of Internal Diseases, Diabetology and Clinical Pharmacology, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland
| | - Agnieszka Śliwińska
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland.
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25
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Landrier JF, Derghal A, Mounien L. MicroRNAs in Obesity and Related Metabolic Disorders. Cells 2019; 8:cells8080859. [PMID: 31404962 PMCID: PMC6721826 DOI: 10.3390/cells8080859] [Citation(s) in RCA: 132] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/01/2019] [Accepted: 08/07/2019] [Indexed: 12/14/2022] Open
Abstract
Metabolic disorders are characterized by the inability to properly use and/or store energy. The burdens of metabolic disease, such as obesity or diabetes, are believed to arise through a complex interplay between genetics and epigenetics predisposition, environment and nutrition. Therefore, understanding the molecular mechanisms for the onset of metabolic disease will provide new insights for prevention and treatment. There is growing concern about the dysregulation of micro-RNAs (miRNAs) in metabolic diseases. MiRNAs are short non-coding RNA molecules that post-transcriptionally repress the expression of genes by binding to untranslated regions and coding sequences of the target mRNAs. This review aims to provide recent data about the potential involvement of miRNAs in metabolic diseases, particularly obesity and type 2 diabetes.
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Affiliation(s)
| | - Adel Derghal
- Aix Marseille Univ, INSERM, INRA, C2VN, 13005 Marseille, France
| | - Lourdes Mounien
- Aix Marseille Univ, INSERM, INRA, C2VN, 13005 Marseille, France.
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26
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Obri A, Claret M. The role of epigenetics in hypothalamic energy balance control: implications for obesity. Cell Stress 2019; 3:208-220. [PMID: 31309172 PMCID: PMC6612891 DOI: 10.15698/cst2019.07.191] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Despite enormous social and scientific efforts, obesity rates continue to increase worldwide. While genetic factors contribute to obesity development, genetics alone cannot explain the current epidemic. Obesity is essentially the consequence of complex genetic-environmental interactions. Evidence suggests that contemporary lifestyles trigger epigenetic changes, which can dysregulate energy balance and thus contribute to obesity. The hypothalamus plays a pivotal role in the regulation of body weight, through a sophisticated network of neuronal systems. Alterations in the activity of these neuronal pathways have been implicated in the pathophysiology of obesity. Here, we review the current knowledge on the central control of energy balance with a focus on recent studies linking epigenetic mechanisms in the hypothalamus to the development of obesity and metabolic disorders.
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Affiliation(s)
- Arnaud Obri
- Neuronal Control of Metabolism Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Marc Claret
- Neuronal Control of Metabolism Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain.,Centro de Investigación Biomédica en Red (CIBER) de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 08036 Barcelona, Spain
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27
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Li W, Zhang D, Wang W, Wu Y, Mohammadnejad A, Lund J, Baumbach J, Christiansen L, Tan Q. DNA methylome profiling in identical twin pairs discordant for body mass index. Int J Obes (Lond) 2019; 43:2491-2499. [PMID: 31152155 DOI: 10.1038/s41366-019-0382-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 04/01/2019] [Accepted: 04/05/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Body mass index (BMI) serves as an important measurement of obesity and adiposity, which are highly correlated with cardiometabolic diseases. Although high heritability has been estimated, the identified genetic variants by genetic association studies only explain a small proportion of BMI variation. As an active effort for further exploring the molecular basis of BMI variation, large-scale epigenome-wide association studies have been conducted but with limited number of loci reported, perhaps due to poorly controlled confounding factors, including genetic factors. Being genetically identical, monozygotic twins discordant for BMI are ideal subjects for analyzing the epigenetic association between DNA methylation and BMI, providing perfect control on their genetic makeups largely responsible for BMI variation. SUBJECTS We performed an epigenome-wide association study on BMI using 30 identical twin pairs (15 male and 15 female pairs) with age ranging from 39 to 72 years and degree of BMI discordance ranging from 3-7.5 kg/m2. Methylation data from whole blood samples were collected using the reduced representation bisulfite sequencing technique. RESULTS After adjusting for blood cell composition and clinical variables, we identified 136 CpGs with p-value < 1e-4, 30 CpGs with p < 1e-05 but no CpGs reached genome-wide significance. Genomic region-based analysis found 11 differentially methylated regions harboring coding and non-coding genes some of which were validated by gene expression analysis on independent samples. CONCLUSIONS Our DNA methylation sequencing analysis on identical twins provides new references for the epigenetic regulation on BMI and obesity.
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Affiliation(s)
- Weilong Li
- Epidemiology and Biostatistics, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Dongfeng Zhang
- Division of Epidemiology and Health Statistics, Qingdao University Medical College, Qingdao, China
| | - Weijing Wang
- Division of Epidemiology and Health Statistics, Qingdao University Medical College, Qingdao, China
| | - Yili Wu
- Division of Epidemiology and Health Statistics, Qingdao University Medical College, Qingdao, China
| | - Afsaneh Mohammadnejad
- Epidemiology and Biostatistics, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Jesper Lund
- Epidemiology and Biostatistics, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Jan Baumbach
- Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, Munich, Germany.,Department of Mathematics and Computer Science, University of Southern Denmark, Odense, Denmark
| | - Lene Christiansen
- Epidemiology and Biostatistics, Department of Public Health, University of Southern Denmark, Odense, Denmark.,Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Qihua Tan
- Epidemiology and Biostatistics, Department of Public Health, University of Southern Denmark, Odense, Denmark. .,Unit of Human Genetics, Department of Clinical Research, University of Southern Denmark, Odense, Denmark.
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28
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Gao Y, Li J, Zhang Z, Zhang R, Pollock A, Sun T. MicroRNA miR-7 and miR-17-92 in the Arcuate Nucleus of Mouse Hypothalamus Regulate Sex-Specific Diet-Induced Obesity. Mol Neurobiol 2019; 56:7508-7521. [DOI: 10.1007/s12035-019-1618-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 04/23/2019] [Indexed: 12/19/2022]
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29
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Wang Y, Wang S, Wang S, Li G, Jiang R, Li Z, Han R, Kang X, Sun G. Target gene identification and functional characterization of miR-1704 in chicken. Anim Biotechnol 2019; 31:229-236. [PMID: 31039664 DOI: 10.1080/10495398.2019.1585365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
MiRNAs are small non-coding RNAs that negatively regulate gene expression at the post-transcriptional level. SNPs in miRNA genes may lead to phenotypic variation by altering miRNA expression and their targets. In this study, miR-1704 expression profiles in nine tissues at 1 d, 6 weeks and 16 weeks old Gushi chickens were detected. MiR-1704 was widely expressed in the detection of tissues. The expression in 1 d and 6 weeks old was low abundance, while its expression at 16 weeks was very high. An rs14668705 (C > G) SNP was detected within the pre-miR-1704 in an F2 resource population of Gushi chicken crossed with Anka broiler. Bioinformatic analysis indicated that the C > G mutation could introduce a base-pair mismatch and cause the change of free energy. Experiments further revealed that the rs14668705 in precursor miR-1704 could significantly affect mature miR-1704 biogenesis and was significantly associated with body weight at the age of 0, 6, 8, 10, and 12 weeks, shank circumference at 4, 8, and 12 weeks, carcass weight, and semi-evisceration weight (p < 0.05). Insulin receptor 2 (IRS2) gene, one of the potential targets of miR-1704 was identified and further confirmed. These data suggested that miR-1704 targeted IRS2 and have an effect on body weight in chicken.
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Affiliation(s)
- Yongcai Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
| | - Shunhong Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
| | - Shanghe Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
| | - Guoxi Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
| | - RuiRui Jiang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
| | - Zhuanjian Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
| | - Ruili Han
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
| | - Xiangtao Kang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
| | - Guirong Sun
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, PR China
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30
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Pomar CA, Castro H, Picó C, Serra F, Palou A, Sánchez J. Cafeteria Diet Consumption during Lactation in Rats, Rather than Obesity Per Se, alters miR-222, miR-200a, and miR-26a Levels in Milk. Mol Nutr Food Res 2019; 63:e1800928. [DOI: 10.1002/mnfr.201800928] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 01/09/2019] [Indexed: 01/21/2023]
Affiliation(s)
- Catalina A. Pomar
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics and Obesity); University of the Balearic Islands; Palma de Mallorca Spain
- CIBER Fisiopatología de la Obesidad y Nutrición; Madrid Spain C.P. 28029
| | - Heriberto Castro
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics and Obesity); University of the Balearic Islands; Palma de Mallorca Spain
- Universidad Autónoma de Nuevo León; Facultad de Salud Pública y Nutrición; Nuevo León México C.P. 64460
| | - Catalina Picó
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics and Obesity); University of the Balearic Islands; Palma de Mallorca Spain
- CIBER Fisiopatología de la Obesidad y Nutrición; Madrid Spain C.P. 28029
- Instituto de Investigación Sanitaria Illes Balears; Palma de Mallorca Spain C.P. 07120
| | - Francisca Serra
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics and Obesity); University of the Balearic Islands; Palma de Mallorca Spain
- CIBER Fisiopatología de la Obesidad y Nutrición; Madrid Spain C.P. 28029
- Instituto de Investigación Sanitaria Illes Balears; Palma de Mallorca Spain C.P. 07120
| | - Andreu Palou
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics and Obesity); University of the Balearic Islands; Palma de Mallorca Spain
- CIBER Fisiopatología de la Obesidad y Nutrición; Madrid Spain C.P. 28029
- Instituto de Investigación Sanitaria Illes Balears; Palma de Mallorca Spain C.P. 07120
| | - Juana Sánchez
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics and Obesity); University of the Balearic Islands; Palma de Mallorca Spain
- CIBER Fisiopatología de la Obesidad y Nutrición; Madrid Spain C.P. 28029
- Instituto de Investigación Sanitaria Illes Balears; Palma de Mallorca Spain C.P. 07120
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31
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Xu X, Chen X, Huang Z, Chen D, Yu B, Chen H, Zheng P, Luo Y, Yu J. An effect of dietary phloretin supplementation on feed intake in mice. Food Funct 2019; 10:5752-5758. [DOI: 10.1039/c9fo00815b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dietary phloretin supplementation promotes feed intake in mice.
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Affiliation(s)
- Xiaojiao Xu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education
- Institute of Animal Nutrition
- Sichuan Agricultural University
- Chengdu
- P. R. China
| | - Xiaoling Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education
- Institute of Animal Nutrition
- Sichuan Agricultural University
- Chengdu
- P. R. China
| | - Zhiqing Huang
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education
- Institute of Animal Nutrition
- Sichuan Agricultural University
- Chengdu
- P. R. China
| | - Daiwen Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education
- Institute of Animal Nutrition
- Sichuan Agricultural University
- Chengdu
- P. R. China
| | - Bing Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education
- Institute of Animal Nutrition
- Sichuan Agricultural University
- Chengdu
- P. R. China
| | - Hong Chen
- College of Food Science
- Sichuan Agricultural University
- Yaan
- P. R. China
| | - Ping Zheng
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education
- Institute of Animal Nutrition
- Sichuan Agricultural University
- Chengdu
- P. R. China
| | - Yuheng Luo
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education
- Institute of Animal Nutrition
- Sichuan Agricultural University
- Chengdu
- P. R. China
| | - Jie Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education
- Institute of Animal Nutrition
- Sichuan Agricultural University
- Chengdu
- P. R. China
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32
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Derghal A, Djelloul M, Azzarelli M, Degonon S, Tourniaire F, Landrier JF, Mounien L. MicroRNAs are involved in the hypothalamic leptin sensitivity. Epigenetics 2018; 13:1127-1140. [PMID: 30395773 DOI: 10.1080/15592294.2018.1543507] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
The central nervous system monitors modifications in metabolic parameters or hormone levels (leptin) and elicits adaptive responses such as food intake and glucose homeostasis regulation. Particularly, within the hypothalamus, pro-opiomelanocortin (POMC) neurons are crucial regulators of energy balance. Consistent with a pivotal role of the melanocortin system in the control of energy homeostasis, disruption of the Pomc gene causes hyperphagia and obesity. Pomc gene expression is tightly controlled by different mechanisms. Interestingly, recent studies pointed to a key role for micro ribonucleic acid (miRNAs) in the regulation of gene expression. However, the role of miRNAs in the leptin sensitivity in hypothalamic melanocortin system has never been assessed. We developed a transgenic mouse model (PDKO) with a partial deletion of the miRNA processing enzyme DICER specifically in POMC neurons. PDKO mice exhibited a normal body weight but a decrease of food intake. Interestingly, PDKO mice had decreased metabolic rate by reduction of VO2 consumption and CO2 production which could explain that PDKO mice have normal weight while eating less. Interestingly, we observed an increase of leptin sensitivity in the POMC neurons of PDKO mice which could explain the decrease of food intake in this model. We also observed an increase in the expression of genes involved in the function of brown adipose tissue that is in polysynaptic contact with the POMC neurons. In summary, these results support the hypothesis that Dicer-derived miRNAs may be involved in the effect of leptin on POMC neurons activity.
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Affiliation(s)
- Adel Derghal
- a Aix Marseille Univ, INSERM, INRA, C2VN , Marseille , France
| | - Mehdi Djelloul
- b Department of Cell and Molecular Biology , Karolinska Institute , Stockholm , Sweden
| | | | | | - Franck Tourniaire
- a Aix Marseille Univ, INSERM, INRA, C2VN , Marseille , France.,c Faculté de Médecine de la Timone , CriBioM, Criblage Biologique Marseille , Marseille , France
| | - Jean-François Landrier
- a Aix Marseille Univ, INSERM, INRA, C2VN , Marseille , France.,c Faculté de Médecine de la Timone , CriBioM, Criblage Biologique Marseille , Marseille , France
| | - Lourdes Mounien
- a Aix Marseille Univ, INSERM, INRA, C2VN , Marseille , France
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Najam SS, Zglinicki B, Vinnikov IA, Konopka W. MicroRNAs in the hypothalamic control of energy homeostasis. Cell Tissue Res 2018; 375:173-177. [DOI: 10.1007/s00441-018-2876-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/19/2018] [Indexed: 11/28/2022]
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Zhang Y, Wu X, Liang C, Bao P, Ding X, Chu M, Jia C, Guo X, Yan P. MicroRNA-200a regulates adipocyte differentiation in the domestic yak Bos grunniens. Gene 2018; 650:41-48. [DOI: 10.1016/j.gene.2018.01.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 01/08/2018] [Accepted: 01/16/2018] [Indexed: 10/18/2022]
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Benoit C, Doubi-Kadmiri S, Benigni X, Crepin D, Riffault L, Poizat G, Vacher CM, Taouis M, Baroin-Tourancheau A, Amar L. miRNA Long-Term Response to Early Metabolic Environmental Challenge in Hypothalamic Arcuate Nucleus. Front Mol Neurosci 2018; 11:90. [PMID: 29643765 PMCID: PMC5882837 DOI: 10.3389/fnmol.2018.00090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 03/08/2018] [Indexed: 11/13/2022] Open
Abstract
Epidemiological reports and studies using rodent models indicate that early exposure to nutrient and/or hormonal challenges can reprogram metabolism at adulthood. Hypothalamic arcuate nucleus (ARC) integrates peripheral and central signals to adequately regulate energy homeostasis. microRNAs (miRNAs) participate in the control of gene expression of large regulatory networks including many signaling pathways involved in epigenetics regulations. Here, we have characterized and compared the miRNA population of ARC of adult male rats continuously exposed to a balanced metabolic environment to the one of adult male rats exposed to an unbalanced high-fat/high-carbohydrate/moderate-protein metabolic environment during the perinatal period and/or at adulthood that consequently displayed hyperinsulinemia and/or hyperleptinemia. We identified more than 400 miRNA species in ARC of adult male rats. By comparing the miRNA content of six biological replicates in each of the four perinatal/adult environments/rat groups, we identified the 10 miRNAs specified by clusters miR-96/182/183, miR-141/200c, and miR-200a/200b/429 as miRNAs of systematic and uncommonly high variation of expression. This uncommon variation of expression may underlie high individual differences in aging disease susceptibilities. By comparing the miRNA content of the adult ARC between the rat groups, we showed that the miRNA population was not affected by the unbalanced adult environment while, in contrast, the expression of 11 miRNAs was repeatedly impacted by the perinatal unbalanced environment. Our data revealed a miRNA response of adult ARC to early metabolic environmental challenge.
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Affiliation(s)
- Charlotte Benoit
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Soraya Doubi-Kadmiri
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Xavier Benigni
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Delphine Crepin
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Laure Riffault
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Ghislaine Poizat
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Claire-Marie Vacher
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Mohammed Taouis
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Anne Baroin-Tourancheau
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Laurence Amar
- Centre National de la Recherche Scientifique UMR 9197/Institut de Neurosciences, Université Paris-Sud, Université Paris-Saclay, Orsay, France
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Yang H, Liu X, Hu G, Xie Y, Lin S, Zhao Z, Chen J. Identification and analysis of microRNAs-mRNAs pairs associated with nutritional status in seasonal sheep. Biochem Biophys Res Commun 2018; 499:321-327. [PMID: 29588175 DOI: 10.1016/j.bbrc.2018.03.155] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/17/2022]
Abstract
Given the important role of nutritional status for reproductive performance, we aimed to explore the potential microRNA (miRNA)-mRNA pairs and their regulatory roles associated with nutritional status in seasonal reproducing sheep. Individual ewes were treated with and without 0.3 kg/day concentrates, and the body condition score, estrus rate, and related miRNAs and target genes were compared. A total of 261 differentially expressed miRNAs were identified, including 148 hypothalamus-expressed miRNAs and 113 ovary-expressed miRNAs, and 349 target genes were predicted to be associated with nutritional status and seasonal reproduction in sheep. Ultimately, the miR-200b-GNAQ pair was screened and validated as differentially expressed, and a dual luciferase reporter assay showed that miR-200b could bind to the 3'-untranslated region of GNAQ to mediate the hypothalamic-pituitary-ovarian axis. Thus, miR-200b and its target gene GNAQ likely represent an important negative feedback loop, providing a link between nutritional status and seasonal reproduction in sheep toward enhancing reproductive performance and productivity.
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Affiliation(s)
- Heng Yang
- College of Animal Science and Technology, Shihezi University, Shihezi 832003, China
| | - Xianxia Liu
- College of Animal Science and Technology, Shihezi University, Shihezi 832003, China
| | - Guangdong Hu
- College of Animal Science and Technology, Shihezi University, Shihezi 832003, China
| | - Yifan Xie
- College of Animal Science and Technology, Shihezi University, Shihezi 832003, China
| | - Shan Lin
- College of Animal Science and Technology, Shihezi University, Shihezi 832003, China
| | - Zongsheng Zhao
- College of Animal Science and Technology, Shihezi University, Shihezi 832003, China.
| | - Jingbo Chen
- College of Animal Science and Technology, Shihezi University, Shihezi 832003, China; Xinjiang Academy of Animal Sciences, Urumqi 830011, China.
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Adipocyte miR-200b/a/429 ablation in mice leads to high-fat-diet-induced obesity. Oncotarget 2018; 7:67796-67807. [PMID: 27655719 PMCID: PMC5356520 DOI: 10.18632/oncotarget.12080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 09/12/2016] [Indexed: 11/25/2022] Open
Abstract
Growing evidence demonstrates the important role of microRNAs (miRs) in regulating adipogenesis, obesity and insulin resistance. The miR-200b/a/429 cluster has been functionally characterized in mammalian reproduction; however, the potential role of the miR-200 family in adipocytes is poorly understood. The aim of our study was to investigate the physiological function of miR-200b/a/429 in the regulation of whole-body metabolism in terms of the activities and targets of this cluster in adipocytes. We generated adipocyte-specific miR-200b/a/429 knockout (ASKO) mice using a Cre-loxP system in which Cre expression was driven by the aP2 promoter. The ASKO and wild type (WT) littermate were fed a chow diet (CD) or high-fat-diet (HFD), and changes in body composition, metabolic parameters, energy homeostasis, glucose tolerance and insulin sensitivity were analyzed. The miR-200b/a/429 putative target genes were predicted and validated via luciferase reporter assays. We found that the HFD-fed ASKO mice gradually gained more body weight than the WT mice due to the increased adiposity. Decreased glucose tolerance and insulin sensitivity were also observed in the HFD-fed ASKO mice. Notably, the down-regulation of lipolysis-related genes and the decreased response to CL-316,243 stimulation in the HFD-fed ASKO mice suggested that these animals exhibited impaired lipolysis. In addition, the HFD-fed ASKO mice displayed impaired energy expenditure, indicating that the miR-200b/a/429 cluster is essential for developing adaptive responses to stressors such as HFD. For the first time, our studies demonstrated the essential role of miR-200b/a/429 in adipocytes in the regulation of HFD-induced whole-body metabolic changes.
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Schroeder M, Drori Y, Ben-Efraim YJ, Chen A. Hypothalamic miR-219 regulates individual metabolic differences in response to diet-induced weight cycling. Mol Metab 2018; 9:176-186. [PMID: 29398616 PMCID: PMC5870106 DOI: 10.1016/j.molmet.2018.01.015] [Citation(s) in RCA: 8] [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: 08/28/2017] [Revised: 01/10/2018] [Accepted: 01/18/2018] [Indexed: 12/23/2022] Open
Abstract
Consumption of a low calorie diet is the most common approach to lose weight. While generally effective at first, it is frequently followed by a relapse where the pre-diet weight is regained, and often exceeded. This pattern of repeated weight loss/regain is referred to as weight cycling and the resulting metabolic response varies greatly between individuals. Objective We attempted to address the issue of individual differences in the response to weight cycling in male mice. Methods We first exposed adult wild type mice to repeated cycles of high/low fat food. Next, using a lentiviral approach, we knocked-down or over-expressed miR-219 in the ventromedial hypothalamus (VMH) of an additional mouse cohort and performed a full metabolic assessment. Results Exposure of wild type males to weight cycling resulted in the division of the cohort into subsets of resistant versus metabolic-syndrome-prone (MS) animals, which differed in their metabolic profile and hypothalamic miR-219 levels. Lentiviral knock-down of miR-219 in the VMH led to exacerbation of metabolic syndrome. In contrast, over-expression of miR-219 resulted in moderation of the metabolic syndrome phenotype. Conclusions Our results suggest a role for miR-219 in the mediation of the metabolic phenotype resulting from repeated weight cycling. Repeated cycles of high fat diet induce different responses in adult males. Low miR-219 in ventromedial hypothalamus are linked to metabolic-syndrome proneness. Lentiviral knockdown of miR-219 induces metabolic-syndrome-prone phenotype. Lentiviral overexpression of miR-219 provides moderate protection from metabolic-syndrome.
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Affiliation(s)
- Mariana Schroeder
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, 76100, Israel; Department of Stress Neurobiology and Neurogenetics, Max-Planck Institute of Psychiatry, Munich, 80804, Germany.
| | - Yonat Drori
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, 76100, Israel; Department of Stress Neurobiology and Neurogenetics, Max-Planck Institute of Psychiatry, Munich, 80804, Germany
| | - Yair J Ben-Efraim
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, 76100, Israel; Department of Stress Neurobiology and Neurogenetics, Max-Planck Institute of Psychiatry, Munich, 80804, Germany
| | - Alon Chen
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, 76100, Israel; Department of Stress Neurobiology and Neurogenetics, Max-Planck Institute of Psychiatry, Munich, 80804, Germany.
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Mapping diet-induced alternative polyadenylation of hypothalamic transcripts in the obese rat. Physiol Behav 2018; 188:173-180. [PMID: 29391168 DOI: 10.1016/j.physbeh.2018.01.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 01/25/2018] [Accepted: 01/27/2018] [Indexed: 12/17/2022]
Abstract
RNA biogenesis has emerged as a powerful biological event that regulates energy homeostasis. In this context insertion of alternative polyadenylation sites (APSs) dictate the fate of newly synthesized RNA molecules and direct alternative splicing of nascent transcripts. Thus APSs serve a mechanistic function by regulating transcriptome expression and function. In this study we employed a novel RNA-Seq Next Generation Sequencing (NGS) approach that utilized the power of Whole Transcriptome Termini Site Sequencing (WTTS-Seq) to simultaneously measure APS events on multiple RNA biotypes. We used this technique to measure APS events in the hypothalamus of adult male Long Evans rats exposed to a palatable high fat diet (HFD) or chow. Rats maintained on HFD displayed typical hyperphagic feeding and ensuing body weight gain over the one-month manipulation period. Our WTTS-Seq analysis mapped approximately 89,000 unique hypothalamic APSs induced by HFD relative to chow fed controls. HFD exposure produced APSs on multiple RNA biotypes in the hypothalamus. The majority of detected APSs occur on mRNA transcripts that encode functional proteins. Notably we find APSs on micro (miRNA) and long non-coding RNAs (lncRNA), newly recognized transcription factors that regulate body weight in rodents. In addition we detect APSs on protein encoding mRNAs that control neuron projection development and synapse organization and glutamate signaling, key events hypothesized to maintain excess food intake. Importantly, quantitative real time PCR indicated that APS insertion led to increased hypothalamic expression of multiple RNA biotypes. Collectively these data highlight APS events as a novel genetic mechanism that directs hypothalamic RNA biogenesis stimulated by diet-induced obesity.
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Xue Y, Lv J, Xu P, Gu L, Cao J, Xu L, Xue K, Li Q. Identification of microRNAs and genes associated with hyperandrogenism in the follicular fluid of women with polycystic ovary syndrome. J Cell Biochem 2018; 119:3913-3921. [PMID: 29193229 DOI: 10.1002/jcb.26531] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 10/03/2017] [Indexed: 12/19/2022]
Abstract
Polycystic ovary syndrome (PCOS) is a common reproductive endocrine disease, which is characterized by hyperandrogenism (HA), chronic anovulation, polycystic ovaries, insulin resistance, and obesity. At present, the mechanism by which PCOS/HA occurs has not been fully elucidated, thus, the mechanisms behind and interventions for HA in PCOS are current hot topics in research. MiRNAs have recently been shown to serve as diagnostic or prognostic biomarkers in patients with cancer. Thus, we are currently focused on studying the altered expression of miRNAs in follicular fluid and their correlation with HA in PCOS. Illumina deep sequencing technology was used to explore different miRNAs in the follicular fluid of women with PCOS/HA and in the follicular fluid of women in a control group. Target prediction databases were then used to analyse the target genes of different expressed miRNAs, and GO analysis and the KEGG pathway database were used to identify the functions and the main biochemical and signalling pathways of differentially expressed target genes. The expression levels of 263 miRNAs were significantly different (>2-fold up-regulated or <0.5-fold down-regulated, P < 0.05) between the two groups of women. For example, the expression levels of miRNA (200a-3p, 10b-3p, 200b-3p, 29c-3p, 99a-3p, and 125a-5p) were significantly increased, while there was a decreased expression of miR-105-3p in PCOS patients with respect to the control. Literature has shown that the above seven miRNAs were associated with HA in PCOS. Furthermore, 31 770 genes were predicted to be targets of the 263 differentially expressed microRNAs. GO analysis and the KEGG pathway database showed involvement of these target genes in HA in PCOS. These results suggest the presence of differentially expressed miRNAs in the follicular fluid of women with PCOS/HA versus women in the control group. The potential role of these microRNAs was elucidated using bioinformatics tools and was found to be involved in the regulation of different pathways, biological functions, and cellular components underlying PCOS. The results of this research may reveal new mechanisms of PCOS/HA and suggest potential treatment targets.
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Affiliation(s)
- Yunping Xue
- The Fourth Clinical Medical College of Nanjing Medical University, Nanjing, China
| | - Juan Lv
- Department of Oncology, Nanjing Maternal and Child Health Hospital, affiliated to Nanjing Medical University, Nanjing, China
| | - Pengfei Xu
- Nanjing Maternal and Child Health Institute, Nanjing Maternal and Child Health Hospital, Obstetrics and Gynecology Hospital affiliated to Nanjing Medical University, Nanjing, China
| | - Lin Gu
- Department of Gynecological Endocrinology, Nanjing Maternal and Child Health Hospital, Obstetrics and Gynecology Hospital affiliated to Nanjing Medical University, Nanjing, China
| | - Jian Cao
- Department of Oncology, Nanjing Maternal and Child Health Hospital, affiliated to Nanjing Medical University, Nanjing, China
| | - Lingling Xu
- Department of Gynecological Endocrinology, Nanjing Maternal and Child Health Hospital, Obstetrics and Gynecology Hospital affiliated to Nanjing Medical University, Nanjing, China
| | - Kai Xue
- Nanjing Maternal and Child Health Institute, Nanjing Maternal and Child Health Hospital, Obstetrics and Gynecology Hospital affiliated to Nanjing Medical University, Nanjing, China
| | - Qian Li
- Nanjing Maternal and Child Health Institute, Nanjing Maternal and Child Health Hospital, Obstetrics and Gynecology Hospital affiliated to Nanjing Medical University, Nanjing, China
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Zhang J, Ma W, He Y, Dawar FU, Xiong S, Mei J. Potential Contributions of miR-200a/-200b and Their Target Gene-Leptin to the Sexual Size Dimorphism in Yellow Catfish. Front Physiol 2017; 8:970. [PMID: 29249979 PMCID: PMC5714929 DOI: 10.3389/fphys.2017.00970] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 11/14/2017] [Indexed: 12/17/2022] Open
Abstract
Sexual size dimorphism is the consequence of differential expression of sex-biased genes related to feeding and growth. Leptin is known to regulate energy balance by regulating food intake. In order to investigate the molecular mechanism of sexual size dimorphism in yellow catfish (Pelteobagrus fulvidraco), the expression of leptin (lep) and its functional receptor (lepr) were detected during larval development. Both lep and lepr have lower expression in males than in females during 1–4 weeks post hatching. 17a-Methyltestosterone (MT) treatment resulted in decreased expression of lep and lepr in both male and female larval fish. Interestingly, the mRNA levels of lep and lepr in juvenile male were significantly decreased compared with juvenile female during short-term fasting periods. Lep was predicted to be a potential target of miR-200a and miR-200b that had an opposite expression pattern to lep in male and female larvas. The results of luciferase reporter assay suggested that lep is a target of miR-200a/-200b. Subsequently, male hormone and fasting treatment have opposite effects on the expression of miR-200a/-200b and lep between males and females. In summary, our results suggest that sexual size dimorphism in fish species is probably caused by the sexually dimorphic expression of leptin, which could be negatively regulated by miR-200a/-200b.
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Affiliation(s)
- Jin Zhang
- Key Laboratory of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Wenge Ma
- Key Laboratory of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Yan He
- Key Laboratory of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Farman U Dawar
- Key Laboratory of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China.,Department of Zoology, Kohat University of Science and Technology, Kohat, Pakistan
| | - Shuting Xiong
- Key Laboratory of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Jie Mei
- Key Laboratory of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
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MicroRNAs and adipocytokines: Promising biomarkers for pharmacological targets in diabetes mellitus and its complications. Biomed Pharmacother 2017; 93:1326-1336. [DOI: 10.1016/j.biopha.2017.07.059] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/08/2017] [Accepted: 07/11/2017] [Indexed: 02/06/2023] Open
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Zhang P, Xu L, Guan H, Liu L, Liu J, Huang Z, Cao X, Liao Z, Xiao H, Li Y. Beraprost sodium, a prostacyclin analogue, reduces fructose-induced hepatocellular steatosis in mice and in vitro via the microRNA-200a and SIRT1 signaling pathway. Metabolism 2017; 73:9-21. [PMID: 28732575 DOI: 10.1016/j.metabol.2017.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 04/24/2017] [Accepted: 05/06/2017] [Indexed: 12/30/2022]
Abstract
PURPOSE To determine whether beraprost sodium, a prostacyclin analogue, could reduce hepatic lipid accumulation induced by fructose in mice and cultured human hepatocytes, and to investigate the expression of microRNAs and the sirtuin 1 (SIRT1) pathway. METHODS Male C57BL/6JNju mice were divided into three groups and fed one of the following diets: a normal diet, a high fructose diet, or a high fructose diet with beraprost sodium treatment. In addition, human-derived HepG2 cells were cultured and treated with fructose (25mmol/L) with or without beraprost sodium (10μmol/L) for 24h, and transfected with small interfering RNA (siRNA) against SIRT1, miR-200a mimic, or miR-200a inhibitor for 48h. The miRNA microarray analysis was performed on the HepG2 cells, and the expression profiles of miRNAs were analyzed using Gene Cluster 3.0 and verified using qPCR. RESULTS Beraprost sodium treatment attenuated hepatic steatosis, induced the transcription of genes involved in lipid metabolism in C57BL/6 mice (P<0.05), and increased the expression of hepatic SIRT1 and peroxisome proliferator activated receptor α (PPARα) in the cells treated with fructose. These effects were blocked in HepG2 cells after transfection with siRNA against SIRT1. MiR-200a was highly expressed during fructose treatment and was down regulated by beraprost sodium (P<0.05). A luciferase assay showed that miR-200a regulated SIRT1 by binding to the 3' UTR. Overexpression of miR-200a inhibited expression of hepatic SIRT1. CONCLUSIONS Our study demonstrated that SIRT1 pathway mediated the effects of beraprost sodium on attenuation of hepatic lipid disorders induced by fructose and revealed the primary role of miR-200a in the regulation of hepatic SIRT1 by beraprost sodium. Our findings suggested that SIRT1 might be a therapeutic target of fructose-related metabolism disorders.
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Affiliation(s)
- Pengyuan Zhang
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Lijuan Xu
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Hongyu Guan
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Liehua Liu
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Juan Liu
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Zhimin Huang
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Xiaopei Cao
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Zhihong Liao
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Haipeng Xiao
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China
| | - Yanbing Li
- The First Affiliated Hospital, Sun Yat-sen University, Department of Endocrinology, Guangzhou, 510080, China.
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Gene-Diet Interactions in Type 2 Diabetes: The Chicken and Egg Debate. Int J Mol Sci 2017; 18:ijms18061188. [PMID: 28574454 PMCID: PMC5486011 DOI: 10.3390/ijms18061188] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/23/2017] [Accepted: 05/26/2017] [Indexed: 02/07/2023] Open
Abstract
Consistent evidence from both experimental and human studies indicates that Type 2 diabetes mellitus (T2DM) is a complex disease resulting from the interaction of genetic, epigenetic, environmental, and lifestyle factors. Nutrients and dietary patterns are important environmental factors to consider in the prevention, development and treatment of this disease. Nutritional genomics focuses on the interaction between bioactive food components and the genome and includes studies of nutrigenetics, nutrigenomics and epigenetic modifications caused by nutrients. There is evidence supporting the existence of nutrient-gene and T2DM interactions coming from animal studies and family-based intervention studies. Moreover, many case-control, cohort, cross-sectional cohort studies and clinical trials have identified relationships between individual genetic load, diet and T2DM. Some of these studies were on a large scale. In addition, studies with animal models and human observational studies, in different countries over periods of time, support a causative relationship between adverse nutritional conditions during in utero development, persistent epigenetic changes and T2DM. This review provides comprehensive information on the current state of nutrient-gene interactions and their role in T2DM pathogenesis, the relationship between individual genetic load and diet, and the importance of epigenetic factors in influencing gene expression and defining the individual risk of T2DM.
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Masotti A, Baldassarre A, Fabrizi M, Olivero G, Loreti MC, Giammaria P, Veronelli P, Graziani MP, Manco M. Oral glucose tolerance test unravels circulating miRNAs associated with insulin resistance in obese preschoolers. Pediatr Obes 2017; 12:229-238. [PMID: 27059430 DOI: 10.1111/ijpo.12133] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 02/22/2016] [Accepted: 02/26/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND Circulating microRNAs (miRNAs) may act as biomarkers of metabolic disturbances. OBJECTIVE The aim of this study was to identify serum miRNAs signature of early insulin resistance in obese preschoolers. METHODS Twelve obese children, aged 2-6 years, six insulin resistant (IR) and six controls were selected being age-matched, sex-matched and body mass index-matched. Profiling of 179 circulating miRNAs, known to be widely expressed in the bloodstream, was investigated by quantitative polymerase chain reaction at fasting and 120 min following a standard oral glucose tolerance test (OGTT). RESULTS Twenty-one miRNAs were differentially regulated in IR obese preschoolers. miR-200c-3p, miR-190a and miR-95 were differently regulated both at fasting and 120 min after the OGTT. In controls, the fold changes of some miRNAs were correlated with Δglucose0-120 (miR-660, miR-26b-5p and miR-22-3p: p = 0.005 for all) and Δinsulin0-120 (miR-660 and miR-22-3p: p = 0.02 for both and miR-423-5p: p = 0.042). In IR patients, miR-1 fold changes were correlated with Δglucose0-120( r = -0.786; p = 0.036) and Δinsulin0-120( r = -0.821; p = 0.023). CONCLUSIONS Our study identifies circulating miR-200c-3p, miR-190a and miR-95 as biomarkers of insulin resistance in obese preschoolers, being differentially regulated in IR patients both in fasting condition and after the OGTT. Expression of some circulating miRNAs seems reflecting glucose and insulin excursion following the OGTT differently in controls and IR obese preschoolers.
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Affiliation(s)
- A Masotti
- Gene expression - Microarrays Laboratory, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - A Baldassarre
- Gene expression - Microarrays Laboratory, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - M Fabrizi
- Research Unit for Multifactorial Disease, Scientific Directorate, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - G Olivero
- Federazione Italiana Medici Pediatri, FIMP, Rome, Italy
| | - M C Loreti
- Federazione Italiana Medici Pediatri, FIMP, Rome, Italy
| | - P Giammaria
- Federazione Italiana Medici Pediatri, FIMP, Rome, Italy
| | - P Veronelli
- Federazione Italiana Medici Pediatri, FIMP, Rome, Italy
| | - M P Graziani
- Federazione Italiana Medici Pediatri, FIMP, Rome, Italy
| | - M Manco
- Research Unit for Multifactorial Disease, Scientific Directorate, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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Zhang Y, Sun X, Icli B, Feinberg MW. Emerging Roles for MicroRNAs in Diabetic Microvascular Disease: Novel Targets for Therapy. Endocr Rev 2017. [DOI: 10.1210/er.2016-1122.2017.1.test] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Derghal A, Djelloul M, Trouslard J, Mounien L. The Role of MicroRNA in the Modulation of the Melanocortinergic System. Front Neurosci 2017; 11:181. [PMID: 28424580 PMCID: PMC5380727 DOI: 10.3389/fnins.2017.00181] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 03/20/2017] [Indexed: 11/13/2022] Open
Abstract
The central control of energy balance involves a highly regulated neuronal network within the hypothalamus and the dorsal vagal complex. In these structures, pro-opiomelanocortin (POMC) neurons are known to reduce meal size and to increase energy expenditure. In addition, leptin, a peripheral signal that relays information regarding body fat content, modulates the activity of melanocortin pathway neurons including POMC-, Agouti-related peptide (AgRP)/Neuropeptide Y (NPY)-, melanocortin receptors (MC3R and MC4R)-expressing neurons. MicroRNAs (miRNAs) are short non-coding RNAs of 22–26 nucleotides that post-transcriptionally interfere with target gene expression by binding to their mRNAs. Evidence has demonstrated that miRNAs play important roles in the central regulation of energy balance. In this context, different studies identified miRNAs including miR-200 family, miR-103, or miR-488 that could target the genes of melanocortin pathway. More precisely, these different miRNAs can modulate energy homeostasis by affecting leptin transduction pathway in the POMC, or AgRP/NPY neurons. This article reviews the role of identified miRNAs in the modulation of melanocortin pathway in the context of energy homeostasis.
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Affiliation(s)
- Adel Derghal
- Physiologie et Physiopathologie du Système Nerveux Somatomoteur et Neurovégétatif (PPSN), Aix Marseille UniversityMarseille, France
| | - Mehdi Djelloul
- Physiologie et Physiopathologie du Système Nerveux Somatomoteur et Neurovégétatif (PPSN), Aix Marseille UniversityMarseille, France.,Department of Cell and Molecular Biology, Karolinska InstituteStockholm, Sweden
| | - Jérôme Trouslard
- Physiologie et Physiopathologie du Système Nerveux Somatomoteur et Neurovégétatif (PPSN), Aix Marseille UniversityMarseille, France
| | - Lourdes Mounien
- Physiologie et Physiopathologie du Système Nerveux Somatomoteur et Neurovégétatif (PPSN), Aix Marseille UniversityMarseille, France
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Zhang Y, Sun X, Icli B, Feinberg MW. Emerging Roles for MicroRNAs in Diabetic Microvascular Disease: Novel Targets for Therapy. Endocr Rev 2017; 38:145-168. [PMID: 28323921 PMCID: PMC5460677 DOI: 10.1210/er.2016-1122] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/13/2017] [Indexed: 12/11/2022]
Abstract
Chronic, low-grade systemic inflammation and impaired microvascular function are critical hallmarks in the development of insulin resistance. Accordingly, insulin resistance is a major risk factor for type 2 diabetes and cardiovascular disease. Accumulating studies demonstrate that restoration of impaired function of the diabetic macro- and microvasculature may ameliorate a range of cardiovascular disease states and diabetes-associated complications. In this review, we focus on the emerging role of microRNAs (miRNAs), noncoding RNAs that fine-tune target gene expression and signaling pathways, in insulin-responsive tissues and cell types important for maintaining optimal vascular homeostasis and preventing the sequelae of diabetes-induced end organ injury. We highlight current pathophysiological paradigms of miRNAs and their targets involved in regulating the diabetic microvasculature in a range of diabetes-associated complications such as retinopathy, nephropathy, wound healing, and myocardial injury. We provide an update of the potential use of circulating miRNAs diagnostically in type I or type II diabetes. Finally, we discuss emerging delivery platforms for manipulating miRNA expression or function as the next frontier in therapeutic intervention to improve diabetes-associated microvascular dysfunction and its attendant clinical consequences.
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Affiliation(s)
- Yu Zhang
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
- Department of Pharmacology and Pharmacy, University of Hong Kong, Pokfulam, Hong Kong SAR, China, and
| | - Xinghui Sun
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588
| | - Basak Icli
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Mark W. Feinberg
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
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Intersections of post-transcriptional gene regulatory mechanisms with intermediary metabolism. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2017; 1860:349-362. [PMID: 28088440 DOI: 10.1016/j.bbagrm.2017.01.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/09/2017] [Accepted: 01/09/2017] [Indexed: 12/16/2022]
Abstract
Intermediary metabolism studies have typically concentrated on four major regulatory mechanisms-substrate availability, allosteric enzyme regulation, post-translational enzyme modification, and regulated enzyme synthesis. Although transcriptional control has been a big focus, it is becoming increasingly evident that many post-transcriptional events are deeply embedded within the core regulatory circuits of enzyme synthesis/breakdown that maintain metabolic homeostasis. The prominent post-transcriptional mechanisms affecting intermediary metabolism include alternative pre-mRNA processing, mRNA stability and translation control, and the more recently discovered regulation by noncoding RNAs. In this review, we discuss the latest advances in our understanding of these diverse mechanisms at the cell-, tissue- and organismal-level. We also highlight the dynamics, complexity and non-linear nature of their regulatory roles in metabolic decision making, and deliberate some of the outstanding questions and challenges in this rapidly expanding field.
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Eisenberg I, Nahmias N, Novoselsky Persky M, Greenfield C, Goldman-Wohl D, Hurwitz A, Haimov-Kochman R, Yagel S, Imbar T. Elevated circulating micro-ribonucleic acid (miRNA)-200b and miRNA-429 levels in anovulatory women. Fertil Steril 2017; 107:269-275. [DOI: 10.1016/j.fertnstert.2016.10.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/20/2016] [Accepted: 10/04/2016] [Indexed: 12/30/2022]
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