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Tekcan E, Kara N, Aydın HM, Abur Ü, Abbaszadeh M. Evaluation of the promoter methylation status of hypoxia factor 3A and interleukin-6 genes and expression levels of mir-130b and mir-146b in childhood obesity. Rev Assoc Med Bras (1992) 2022; 68:1276-1281. [PMID: 36228259 PMCID: PMC9575007 DOI: 10.1590/1806-9282.20220375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 06/24/2022] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE Obesity, which causes many serious diseases, is increasing exponentially in childhood across the world. Epigenetic changes, as well as genetics, play an important role in the process of adipogenesis. Therefore, we aimed to examine the expression levels of obesity-related MicroRNA-130b and MicroRNA-146b and the methylation status of hypoxia factor 3A and interleukin-6 genes associated with obesity in children. METHODS This study was performed with 98 individuals (49 obese children and 49 controls) whose DNA was isolated from peripheral blood. Gene promoter methylations were analyzed by methylation-specific Polymerase chain reaction. In addition, expression levels of MicroRNAs were determined by quantitative real-time Polymerase chain reaction in 30 children (15 obese children and 15 controls). RESULTS Methylation status of interleukin-6 gene was 93.9% in obese children (n=46/49) and 100% (n=49/49) in control group (p>0.05). There was no methylation for hypoxia factor 3A gene (p>0.05). As a result of the study, there was no statistically significant difference in terms of methylation status for hypoxia factor 3A and interleukin-6 genes in the obese group compared to the control group. However, we found that expression levels of MicroRNA-130b (p<0.01) and MicroRNA-146b (p<0.001) were higher in the obese group. CONCLUSIONS Results support that MicroRNA-130b and MicroRNA-146b are potential biomarkers for the prevention and early diagnosis of obesity. This is the first study on childhood obesity in the Middle Black Sea region of Turkey. We believe that the results obtained by expanding the studies in our country and neighboring countries will be more decisive.
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Affiliation(s)
- Esra Tekcan
- Ondokuz Mayis University, Faculty of Medicine, Department of Medical Biology – Samsun, Turkey.,Corresponding author:
| | - Nurten Kara
- Ondokuz Mayis University, Faculty of Medicine, Department of Medical Biology – Samsun, Turkey
| | - Hasan Murat Aydın
- Ondokuz Mayis University, Faculty of Medicine, Department of Pediatric Endocrinology – Samsun, Turkey
| | - Ümmet Abur
- Ondokuz Mayis University, Faculty of Medicine, Department of Medical Genetics – Samsun, Turkey
| | - Mohsen Abbaszadeh
- Ondokuz Mayis University, Faculty of Medicine, Department of Medical Genetics – Samsun, Turkey
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Guo Y, Zou J, Xu X, Zhou H, Sun X, Wu L, Zhang S, Zhong X, Xiong Z, Lin Y, Huang Y, Du Z, Liao X, Zhuang X. Short-chain fatty acids combined with intronic DNA methylation of HIF3A: Potential predictors for diabetic cardiomyopathy. Clin Nutr 2021; 40:3708-3717. [PMID: 34130016 DOI: 10.1016/j.clnu.2021.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 03/29/2021] [Accepted: 04/03/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Hyperglycemia can induce the heart to enter an oxygen-restricted environment, which results in diabetic cardiomyopathy (DCM). Microbiota-derived short-chain fatty acids (SCFAs) affect O2 consumption and play crucial roles in modulating metabolic and cardiovascular health. The epigenetic regulation of the hypoxia-inducible factor 3A (HIF3A) gene is implicated in oxidative metabolism in the pathogenesis of diabetes. Identifying the associations between plasma SCFA levels and intronic DNA methylation of HIF3A may reveal useful predictors or provide insights into the disease processes of DCM. METHODS In this cross-sectional study, we analyzed plasma SCFA levels, HIF3A expression, and CpG methylation of HIF3A intron 1 in peripheral blood from patients with type 2 diabetes presenting with (n = 92) and without (n = 105) cardiomyopathy. RESULTS Plasma butyric acid levels and HIF3A mRNA expression in peripheral blood were decreased in DCM patients, whereas 3 CpGs in HIF3A intron 1 (CpG 6, CpG 7 and CpG 11) were highly methylated in DCM patients. Interestingly, butyric acid levels positively correlated with HIF3A levels, while a negative association was identified between butyric acid levels and the methylation rates of HIF3A intron 1 at CpG 6. Butyric acid levels also correlated with several clinical/echocardiographic factors in DCM patients. Additionally, the combination of plasma butyric acid levels and HIF3A intron 1 methylation at CpG 6 discriminated DCM patients from type2 diabetes mellitus (T2DM) patients. CONCLUSIONS The novel associations between plasma butyric acid levels and HIF3A intron 1 methylation at CpG 6 may highlight an underlying mechanism by which the "microbial-myocardial" axis and host-microbe interactions may participate in the pathogenesis of DCM.
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Affiliation(s)
- Yue Guo
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China; NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, Guangdong, 510080, PR China
| | - Jing Zou
- Department of Neurology and Stroke Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, PR China; Clinical Neuroscience Institute of Jinan University, Guangzhou, 510630, PR China
| | - Xingfeng Xu
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China; NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, Guangdong, 510080, PR China
| | - Huimin Zhou
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China; NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, Guangdong, 510080, PR China
| | - Xiuting Sun
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China; NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, Guangdong, 510080, PR China
| | - Lingling Wu
- Department of Medicine, Mount Sinai Morningside and West Hospital, New York, NY, 10019, USA
| | - Shaozhao Zhang
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China; NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, Guangdong, 510080, PR China
| | - Xiangbin Zhong
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China
| | - Zhenyu Xiong
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China
| | - Yifen Lin
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China
| | - Yiquan Huang
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China
| | - Zhimin Du
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China; NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, Guangdong, 510080, PR China
| | - Xinxue Liao
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China; NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, Guangdong, 510080, PR China.
| | - Xiaodong Zhuang
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, PR China; NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou, Guangdong, 510080, PR China.
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Lima RS, Assis Silva Gomes J, Moreira PR. An overview about DNA methylation in childhood obesity: Characteristics of the studies and main findings. J Cell Biochem 2020; 121:3042-3057. [DOI: 10.1002/jcb.29544] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 10/10/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Rafael Silva Lima
- Laboratory of Cell‐Cell Interactions, Department of Morphology, Institute of Biological SciencesFederal University of Minas Gerais Minas Gerais Brazil
| | - Juliana Assis Silva Gomes
- Laboratory of Cell‐Cell Interactions, Department of Morphology, Institute of Biological SciencesFederal University of Minas Gerais Minas Gerais Brazil
| | - Paula Rocha Moreira
- Laboratory of Cell‐Cell Interactions, Department of Morphology, Institute of Biological SciencesFederal University of Minas Gerais Minas Gerais Brazil
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Mansell T, Ponsonby AL, Januar V, Novakovic B, Collier F, Burgner D, Vuillermin P, Ryan J, Saffery R. Early-life determinants of hypoxia-inducible factor 3A gene (HIF3A) methylation: a birth cohort study. Clin Epigenetics 2019; 11:96. [PMID: 31262346 PMCID: PMC6604333 DOI: 10.1186/s13148-019-0687-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 05/27/2019] [Indexed: 12/17/2022] Open
Abstract
Background Methylation of the hypoxia-inducible factor 3α gene (HIF3A) has been linked to pregnancy exposures, infant adiposity and later BMI. Genetic variation influences HIF3A methylation levels and may modify these relationships. However, data in very early life are limited, particularly in association with adverse pregnancy outcomes. We investigated the relationship between maternal and gestational factors, infant anthropometry, genetic variation and HIF3A DNA methylation in the Barwon Infant Study, a population-based birth cohort. Methylation of two previously studied regions of HIF3A were tested in the cord blood mononuclear cells of 938 infants. Results No compelling evidence was found of an association between birth weight, adiposity or maternal gestational diabetes with methylation at the most widely studied HIF3A region. Male sex (− 4.3%, p < 0.001) and pre-eclampsia (− 5.4%, p = 0.02) negatively associated with methylation at a second region of HIF3A; while positive associations were identified for gestational diabetes (4.8%, p = 0.01) and gestational age (1.2% increase per week, p < 0.001). HIF3A genetic variation also associated strongly with methylation at this region (p < 0.001). Conclusions Pre- and perinatal factors impact HIF3A methylation, including pre-eclampsia. This provides evidence that specific pregnancy complications, previously linked to adverse outcomes for both mother and child, impact the infant epigenome in a molecular pathway critical to several vascular and metabolic conditions. Further work is required to understand the mechanisms and clinical relevance, particularly the differing effects of in utero exposure to gestational diabetes or pre-eclampsia. Electronic supplementary material The online version of this article (10.1186/s13148-019-0687-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Toby Mansell
- Murdoch Children's Research Institute, Parkville, Australia.,Department of Paediatrics, University of Melbourne, Parkville, Australia
| | - Anne-Louise Ponsonby
- Murdoch Children's Research Institute, Parkville, Australia.,Department of Paediatrics, University of Melbourne, Parkville, Australia.,The Florey Institute of Neuroscience and Mental Health, Parkville, Australia
| | - Vania Januar
- Murdoch Children's Research Institute, Parkville, Australia
| | - Boris Novakovic
- Murdoch Children's Research Institute, Parkville, Australia.,Department of Paediatrics, University of Melbourne, Parkville, Australia
| | - Fiona Collier
- Murdoch Children's Research Institute, Parkville, Australia.,School of Medicine, Deakin University, Geelong, Australia.,Child Health Research Unit, Barwon Health, Geelong, Australia
| | - David Burgner
- Murdoch Children's Research Institute, Parkville, Australia.,Department of Paediatrics, University of Melbourne, Parkville, Australia.,Department of Paediatrics, Monash University, Clayton, Australia
| | - Peter Vuillermin
- Murdoch Children's Research Institute, Parkville, Australia.,School of Medicine, Deakin University, Geelong, Australia.,Child Health Research Unit, Barwon Health, Geelong, Australia
| | - Joanne Ryan
- Murdoch Children's Research Institute, Parkville, Australia.,School of Public Health & Preventive Medicine, Monash University, Melbourne, Australia
| | - Richard Saffery
- Murdoch Children's Research Institute, Parkville, Australia. .,Department of Paediatrics, University of Melbourne, Parkville, Australia.
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Lee S. The association of genetically controlled CpG methylation (cg158269415) of protein tyrosine phosphatase, receptor type N2 (PTPRN2) with childhood obesity. Sci Rep 2019; 9:4855. [PMID: 30890718 PMCID: PMC6425015 DOI: 10.1038/s41598-019-40486-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 02/18/2019] [Indexed: 12/31/2022] Open
Abstract
Protein tyrosine phosphatase, receptor type N2 (PTPRN2) encodes a major islet autoantigen in type-1 diabetes. Previous genetic studies have shown its significant association with obesity. PTPRN2 plays an important role in epigenetic regulation of metabolic diseases and cancers. We investigated CpG methylations (cg17429772 and cg158269415) in PTPRN2 by pyrosequencing from blood samples of childhood obesity (n = 638). cg158269415 had significant positive correlations with body mass index (BMI) and waist-hip ratio (WHR). Case-control analysis showed that cg158269415 methylation in blood sample was significantly more hypermethylated in obese cases (n = 252), an average of 2.93% more than that that in controls (n = 386). The cg158269415 methylation has a trimodal distribution pattern with strong dependency on nearby located rs1670344 G > A genotype. Correlations of cg158269415 with BMI and WHR were significant and strong in major G allele carriers (GG + GA). Our study showed that an epigenetic association of PTPRN2 gene with childhood obesity was under certain genetic background. The genetic and epigenetic interplay of PTPRN2 gene may implicate a mechanism of childhood obesity. Whether these small changes in DNA methylation from whole blood are causally or consequently related to childhood obesity outcome and their clinical relevance remains to be determined. However, this study presents a promising obesity risk marker that warrants further investigation.
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Affiliation(s)
- Suman Lee
- Center for Genome Science, National Institute of Health, Chungcheongbuk-do, 363-951, Republic of Korea.
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Zhang Y, Chen Y, Qu H, Wang Y. Methylation of HIF3A promoter CpG islands contributes to insulin resistance in gestational diabetes mellitus. Mol Genet Genomic Med 2019; 7:e00583. [PMID: 30743315 PMCID: PMC6465726 DOI: 10.1002/mgg3.583] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/16/2018] [Accepted: 12/28/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Gestational diabetes mellitus (GDM) is defined as any degree of glucose intolerance during pregnancy, and will lead to high risk of diabetes even after pregnancy. Hypoxia-inducible factor (HIF) family proteins are transcriptional factors that are highly correlated with methylation, which might be involved in the regulation of GDM. METHODS Baseline clinical characteristics of the GDM patients and healthy women were analyzed. Omental tissue from GDM patients and control groups were collected and detected for the expression levels of HIF1A, HIF2A, and HIF3A. The CpG islands of HIF3A promoter were predicted by "methprimer" software, and the methylation level of CpG islands was detected by bisulfite sequencing PCR. RESULTS HIF3A was downregulated in the omental tissue from GDM patients, whereas HIF1A and HIF2A were not affected. Furthermore, HIF3A expression was positively correlated with levels of estrogen receptor α (ESR1) and solute carrier family 2 member 4 (SLC2A4). Moreover, CpG islands of HIF3A promoter were highly methylated in GDM patients. In addition, methylation level of CpG islands could be upregulated by Estradiol (E2) treatment, since high dose of E2 reduced HIF3A mRNA expression in 3T3-L1 adipocytes. CONCLUSION Our findings demonstrate that the expression level of HIF3A, but not HIF1A or HIF2A, is downregulated in GDM patients. The methylation status of HIF3A promoter region is highly correlated with GDM, which could be a novel therapeutic target for GDM treatment.
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Affiliation(s)
- Yinghong Zhang
- Department of Obstetrics, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Yangyang Chen
- Department of Obstetrics, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Hongmei Qu
- Department of Obstetrics, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Yuanli Wang
- Department of Obstetrics, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
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