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Ohtani H, Inoue N, Iwatani Y, Takeno Y, Arakawa Y, Hidaka Y, Watanabe M. Effect of DNA methylation at the CTLA4 gene on the clinical status of autoimmune thyroid diseases. Clin Immunol 2024; 267:110338. [PMID: 39142493 DOI: 10.1016/j.clim.2024.110338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 07/31/2024] [Accepted: 08/04/2024] [Indexed: 08/16/2024]
Abstract
The pathogenesis and manifestation of autoimmune thyroid diseases (AITDs), Graves' disease (GD), and Hashimoto's disease (HD) are associated with T cell activation. Cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) plays a crucial role in the regulation of T cell activation. DNA methylation levels of eight CpG sites in the CTLA4 gene and expression levels of soluble CTLA-4 were examined. Methylation levels of +22 CpG and CT60 CpG-SNPs in patients with GD and HD with the CT60 GG genotype were lower than those in control subjects. Methylation levels of the-15 CpG sites were lower in patients with intractable GD than those in GD patients in remission. These results suggest that demethylation of +22 CpG and CT60 CpG-SNPs may be associated with susceptibility to GD and HD in subjects with the CTLA4 CT60 GG genotype, and that demethylation of -15 CpG may be associated with the intractability of GD.
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Affiliation(s)
- Hiroki Ohtani
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan
| | - Naoya Inoue
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan; Laboratory for Clinical Investigation, Osaka University Hospital, Yamadaoka 2-15, Suita, Osaka 565-0871, Japan
| | - Yoshinori Iwatani
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan
| | - Yuri Takeno
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan
| | - Yuya Arakawa
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan
| | - Yoh Hidaka
- Laboratory for Clinical Investigation, Osaka University Hospital, Yamadaoka 2-15, Suita, Osaka 565-0871, Japan
| | - Mikio Watanabe
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan.
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Kinoshita R, Inoue N, Iwatani Y, Noguchi Y, Hidaka Y, Watanabe M. Methylation levels of the IL10 gene in peripheral blood are related to the intractability of Graves' disease. Clin Immunol 2024; 263:110196. [PMID: 38570004 DOI: 10.1016/j.clim.2024.110196] [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: 03/24/2023] [Revised: 02/28/2024] [Accepted: 03/18/2024] [Indexed: 04/05/2024]
Abstract
The prognosis of autoimmune thyroid diseases (AITDs), including Hashimoto's disease (HD) and Graves' disease (GD), is difficult to predict. DNA methylation regulates gene expression of immune mediating factors. Interleukin (IL)-10 is a Th2 cytokine that downregulates inflammatory cytokines produced by Th1 cells. To clarify the role of methylation of the IL10 gene in the prognosis of AITD, we evaluated the methylation levels of two CpG sites in the IL10 promoter using pyrosequencing. The methylation levels of the -185 CpG site of the IL10 gene were related to age and GD intractability in GD patients. Furthermore, the C carrier of the IL10-592 A/C polymorphism was related to low methylation levels of the -185 CpG site. The methylation levels of the IL10-185 CpG site of the IL10 gene were related to the intractability of GD and were lower in individuals with the C allele of the IL10-592 A/C polymorphism.
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Affiliation(s)
- Riku Kinoshita
- Department of Clinical Laboratory and Biomedical Sciences, Division of Health Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan
| | - Naoya Inoue
- Department of Clinical Laboratory and Biomedical Sciences, Division of Health Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan; Laboratory for Clinical Investigation, Osaka University Hospital, Yamadaoka 2-15, Suita, Osaka 565-0871, Japan
| | - Yoshinori Iwatani
- Department of Clinical Laboratory and Biomedical Sciences, Division of Health Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan
| | - Yusuke Noguchi
- Department of Clinical Laboratory and Biomedical Sciences, Division of Health Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan
| | - Yoh Hidaka
- Laboratory for Clinical Investigation, Osaka University Hospital, Yamadaoka 2-15, Suita, Osaka 565-0871, Japan
| | - Mikio Watanabe
- Department of Clinical Laboratory and Biomedical Sciences, Division of Health Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka 565-0871, Japan.
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Rossetti E, Pepe C, Eandi Eberle S, Bindi V, Fernandez D, Nieto L, Gonzalez MM, Avalos V. Megaloblastic anemia with homocystinuria type cblE: Atypical presentation in a pediatric patient with high transfusion requirement and autoimmune phenomena. Pediatr Blood Cancer 2024; 71:e30867. [PMID: 38217084 DOI: 10.1002/pbc.30867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 12/29/2023] [Indexed: 01/15/2024]
Affiliation(s)
- Estefania Rossetti
- Pediatric Hematology and Oncology Department, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina
| | - Carolina Pepe
- Molecular Biology Department, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina
| | - Silvia Eandi Eberle
- Inborn Errors of Metabolism Department, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina
| | - Veronica Bindi
- Hospital de Pediatría Juan P. Garrahan, Biochemistry Laboratory, Buenos Aires, Argentina
| | - Diego Fernandez
- Inborn Errors of Metabolism Department, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina
| | - Leandro Nieto
- Inborn Errors of Metabolism Department, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina
| | - Maria Magdalena Gonzalez
- Inborn Errors of Metabolism Department, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina
| | - Vanesa Avalos
- Pediatric Hematology and Oncology Department, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina
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Chaudhary V, Bhattacharjee D, Devi NK, Saraswathy KN. Global DNA Methylation Levels Viz-a-Viz Genetic and Biochemical Variations in One Carbon Metabolic Pathway: An Exploratory Study from North India. Biochem Genet 2024:10.1007/s10528-023-10659-4. [PMID: 38356009 DOI: 10.1007/s10528-023-10659-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/29/2023] [Indexed: 02/16/2024]
Abstract
Despite the importance of one carbon metabolic pathway (OCMP) in modulating the DNA methylation process, only a few population-based studies have explored their relationship among healthy individuals. This study aimed to understand the variations in global DNA methylation levels with respect to selected genetic (CBS 844ins68, MTRR A66G, MTR A2756G, and MTHFR C677T polymorphisms) and biochemical (folate, vitamin B12, and homocysteine) markers associated with OCMP among healthy North Indian adults. The study has been conducted among 1095 individuals of either sex (69.5% females), aged 30-75 years. A sample of 5 mL of blood was collected from each participant. Homocysteine, folate, and vitamin B12 levels were determined using the chemiluminescence technique. Restriction digestion was performed for genotyping MTRR A66G, MTR A2756G, and MTHFR C677T polymorphisms and allele-specific PCR amplification for CBS 844ins68 polymorphism. Global DNA methylation levels were analyzed using ELISA-based colorimetric technique. Of the selected genetic and biochemical markers, the mutant MTRR A66G allele was positively associated with global DNA methylation levels. Further, advanced age was inversely associated with methylation levels. MTRR 66GG genotype group was hypermethylated than other genotypes in folate replete and vitamin B12 deficient group (a condition prevalent among vegetarians), suggesting that the G allele may be more efficient than the wild-type allele in such conditions. Global DNA methylation levels appeared to be more influenced by genetic than biochemical factors. MTRR 66G allele may have a selective advantage in vitamin B12 deficient conditions. Further research should be undertaken to understand how genetics affects epigenetic processes.
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Affiliation(s)
- Vineet Chaudhary
- Department of Anthropology, University of Delhi, Delhi, 110007, India
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Molecular Mechanisms in Autoimmune Thyroid Disease. Cells 2023; 12:cells12060918. [PMID: 36980259 PMCID: PMC10047067 DOI: 10.3390/cells12060918] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
The most common cause of acquired thyroid dysfunction is autoimmune thyroid disease, which is an organ-specific autoimmune disease with two presentation phenotypes: hyperthyroidism (Graves-Basedow disease) and hypothyroidism (Hashimoto’s thyroiditis). Hashimoto’s thyroiditis is distinguished by the presence of autoantibodies against thyroid peroxidase and thyroglobulin. Meanwhile, autoantibodies against the TSH receptor have been found in Graves-Basedow disease. Numerous susceptibility genes, as well as epigenetic and environmental factors, contribute to the pathogenesis of both diseases. This review summarizes the most common genetic, epigenetic, and environmental mechanisms involved in autoimmune thyroid disease.
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Guirgis SA, El-Halfawy KA, Alalem M, Khalil H. Legionellapneumophila induces methylomic changes in ten-eleven translocation to ensure bacterial reproduction in human lung epithelial cells. J Med Microbiol 2023; 72. [PMID: 36927577 DOI: 10.1099/jmm.0.001676] [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: 03/18/2023] Open
Abstract
Introduction. Legionella pneumophila is a Gram-negative flagellated bacteria that can infect human lungs and cause a severe form of pneumonia named Legionnaires' disease.Hypothesis. We hypothesize that L. pneumophila infection induces methylomic changes in methylcytosine dioxygenases, ten-eleven translocation (TET) genes, and controls DNA methylation following infection.Aim. In the current research, we sought to further investigate DNA methylation changes in human lung epithelial cells upon L. pneumophila infection and determine how methylation inhibitor agents disturb L. pneumophila reproduction.Methodology. A549 cell line was used in L. pneumophila infection and inhibitors' treatment, including 5-azacytidine (5-AZA) and (-)-epigallocatechin-3-O-gallate (EGCG).Results. Interestingly, DNA methylation analysis of infected A549 using sodium bisulfite PCR and the methylation-sensitive HpaII enzyme showed potential methylation activity within the promoter regions of ten-eleven translocation (TET) genes located on CpG/397-8 and CpG/385-6 of TET1 and TET3, respectively. Such methylation changes in TET effectors decreased their expression profile following infection, indicated by quantitative real-time PCR (RT-qPCR), immunoblotting and flow cytometry. Furthermore, pre-treatment of A549 cells with 5-AZA or EGCG significantly decreased the bacterial reproduction characterized by the expression of L. pneumophila 16S ribosomal RNA and the c.f.u. ml-1 of bacterial particles. Moreover, both methylation inhibitors showed potent inhibition of methionine synthase (MS) expression, which was further confirmed by the docking analysis of inhibitor ligands and crystal structure of MS protein.Conclusion. These data provide evidence for the methylomic changes in the promoter region of TET1 and TET3 by L. pneumophila infection in the A549 cell line and suggest the anti-bacterial properties of 5-AZA and EGCG, as methylation inhibitors, are due to targeting the epigenetic effector methionine synthase.
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Affiliation(s)
- Sherry A Guirgis
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat, Egypt
| | - Khalil A El-Halfawy
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat, Egypt
| | - Mai Alalem
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat, Egypt
| | - Hany Khalil
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat, Egypt
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Radziszewski M, Kuś A, Bednarczuk T. Genotype-phenotype correlations in Graves' disease. Best Pract Res Clin Endocrinol Metab 2023; 37:101745. [PMID: 36828713 DOI: 10.1016/j.beem.2023.101745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Graves' disease (GD) is a heterogeneous autoimmune disease affecting with varying degrees of severity the thyroid gland, orbital tissues and skin. The pathogenesis of GD involves a complex interplay between multiple genetic, environmental and endogenous factors. Although the genetic predisposition to GD is well established, the significance of genotype-phenotype correlations and the role of epigenetic modifications in the disease pathogenesis remains largely unknown. In this review, we provide an up-to-date overview of genotype-phenotype correlations and summarize possible clinical implications of genetic and epigenetic markers in GD patients. We will specifically discuss the association of genetic markers and epigenetic modifications with age of GD onset, severity of Graves' hyperthyroidism and the development of clinically evident Graves' orbitopathy.
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Affiliation(s)
- Mikołaj Radziszewski
- Department of Internal Medicine and Endocrinology, Medical University of Warsaw, Warsaw, Poland.
| | - Aleksander Kuś
- Department of Internal Medicine and Endocrinology, Medical University of Warsaw, Warsaw, Poland.
| | - Tomasz Bednarczuk
- Department of Internal Medicine and Endocrinology, Medical University of Warsaw, Warsaw, Poland.
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Lafontaine N, Wilson SG, Walsh JP. DNA Methylation in Autoimmune Thyroid Disease. J Clin Endocrinol Metab 2023; 108:604-613. [PMID: 36420742 DOI: 10.1210/clinem/dgac664] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 11/02/2022] [Accepted: 11/14/2022] [Indexed: 11/25/2022]
Abstract
Graves disease and Hashimoto disease form part of the spectrum of autoimmune thyroid disease (AITD), to which genetic and environmental factors are recognized contributors. Epigenetics provides a potential link between environmental influences, gene expression, and thyroid autoimmunity. DNA methylation (DNAm) is the best studied epigenetic process, and global hypomethylation of leukocyte DNA is reported in several autoimmune disorders. This review summarizes the current understanding of DNAm in AITD. Targeted DNAm studies of blood samples from AITD patients have reported differential DNAm in the promoter regions of several genes implicated in AITD, including TNF, IFNG, IL2RA, IL6, ICAM1, and PTPN22. In many cases, however, the findings await replication and are unsupported by functional studies to support causal roles in AITD pathogenesis. Furthermore, thyroid hormones affect DNAm, and in many studies confounding by reverse causation has not been considered. Recent studies have shown that DNAm patterns in candidate genes including ITGA6, PRKAA2, and DAPK1 differ between AITD patients from regions with different iodine status, providing a potential mechanism for associations between iodine and AITD. Research focus in the field is moving from candidate gene studies to an epigenome-wide approach. Genome-wide methylation studies of AITD patients have demonstrated multiple differentially methylated positions, including some in immunoregulatory genes such as NOTCH1, HLA-DRB1, TNF, and ICAM1. Large, epigenome-wide studies are required to elucidate the pathophysiological role of DNAm in AITD, with the potential to provide novel diagnostic and prognostic biomarkers as well as therapeutic targets.
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Affiliation(s)
- Nicole Lafontaine
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, Western Australia 6009, Australia
- Medical School, University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Scott G Wilson
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, Western Australia 6009, Australia
- School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia 6009, Australia
| | - John P Walsh
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, Western Australia 6009, Australia
- Medical School, University of Western Australia, Crawley, Western Australia 6009, Australia
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Sharif FA, Abuwarda HN. Autoimmunity and re-expression of cancer/testis antigens: Numerous disorders one mechanism hypothesis. Med Hypotheses 2023. [DOI: 10.1016/j.mehy.2023.111019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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10
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Borowczyk M, Dobosz P, Szczepanek-Parulska E, Budny B, Dębicki S, Filipowicz D, Wrotkowska E, Oszywa M, Verburg FA, Janicka-Jedyńska M, Ziemnicka K, Ruchała M. Follicular Thyroid Adenoma and Follicular Thyroid Carcinoma-A Common or Distinct Background? Loss of Heterozygosity in Comprehensive Microarray Study. Cancers (Basel) 2023; 15:cancers15030638. [PMID: 36765597 PMCID: PMC9913827 DOI: 10.3390/cancers15030638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023] Open
Abstract
Pre- and postsurgical differentiation between follicular thyroid adenoma (FTA) and follicular thyroid cancer (FTC) represents a significant diagnostic challenge. Furthermore, it remains unclear whether they share a common or distinct background and what the mechanisms underlying follicular thyroid lesions malignancy are. The study aimed to compare FTA and FTC by the comprehensive microarray and to identify recurrent regions of loss of heterozygosity (LOH). We analyzed formalin-fixed paraffin-embedded (FFPE) samples acquired from 32 Caucasian patients diagnosed with FTA (16) and FTC (16). We used the OncoScan™ microarray assay (Affymetrix, USA), using highly multiplexed molecular inversion probes for single nucleotide polymorphism (SNP). The total number of LOH was higher in FTC compared with FTA (18 vs. 15). The most common LOH present in 21 cases, in both FTA (10 cases) and FTC (11 cases), was 16p12.1, which encompasses many cancer-related genes, such as TP53, and was followed by 3p21.31. The only LOH present exclusively in FTA patients (56% vs. 0%) was 11p11.2-p11.12. The alteration which tended to be detected more often in FTC (6 vs. 1 in FTA) was 12q24.11-q24.13 overlapping FOXN4, MYL2, PTPN11 genes. FTA and FTC may share a common genetic background, even though differentiating rearrangements may also be detected.
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Affiliation(s)
- Martyna Borowczyk
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
- Department of Medical Simulation, Poznan University of Medical Sciences, 60-806 Poznan, Poland
- Correspondence: ; Tel.: +48-512131285
| | - Paula Dobosz
- Department of Genetics and Genomics, Central Clinical Hospital of the Ministry of Interior Affairs and Administration, 02-507 Warsaw, Poland
| | - Ewelina Szczepanek-Parulska
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
| | - Bartłomiej Budny
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
| | - Szymon Dębicki
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
| | - Dorota Filipowicz
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
| | - Elżbieta Wrotkowska
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
| | - Michalina Oszywa
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
| | - Frederik A. Verburg
- Department of Radiology and Nuclear Medicine, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands
| | | | - Katarzyna Ziemnicka
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
| | - Marek Ruchała
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
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Iron: Not Just a Passive Bystander in AITD. Nutrients 2022; 14:nu14214682. [PMID: 36364944 PMCID: PMC9658435 DOI: 10.3390/nu14214682] [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: 09/30/2022] [Revised: 10/27/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
Autoimmune thyroid disease (AITD) is the most prevalent autoimmune disease all over the world and the most frequent cause of hypothyroidism in areas of iodine sufficiency. The pathogenesis of AITD is multifactorial and depends on complex interactions between genetic and environmental factors, with epigenetics being the crucial link. Iron deficiency (ID) can reduce the activities of thyroid peroxidase and 5′-deiodinase, inhibit binding of triiodothyronine to its nuclear receptor, and cause slower utilization of T3 from the serum pool. Moreover, ID can disturb the functioning of the immune system, increasing the risk of autoimmune disorders. ID can be responsible for residual symptoms that may persist in patients with AITD, even if their thyrometabolic status has been controlled. The human lifestyle in the 21st century is inevitably associated with exposure to chemical compounds, pathogens, and stress, which implies an increased risk of autoimmune disorders and thyroid dysfunction. To summarize, in our paper we discuss how iron deficiency can impair the functions of the immune system, cause epigenetic changes in human DNA, and potentiate tissue damage by chemicals acting as thyroid disruptors.
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Liotti A, Ferrara AL, Loffredo S, Galdiero MR, Varricchi G, Di Rella F, Maniscalco GT, Belardo M, Vastano R, Prencipe R, Pignata L, Romano R, Spadaro G, de Candia P, Pezone A, De Rosa V. Epigenetics: an Opportunity to Shape Innate and Adaptive Immune Responses. Immunol Suppl 2022; 167:451-470. [PMID: 36043705 DOI: 10.1111/imm.13571] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/09/2022] [Indexed: 12/01/2022]
Abstract
Epigenetics connects genetic and environmental factors: it includes DNA methylation, histone post-translational modifications and the regulation of chromatin accessibility by non-coding RNAs, all of which control constitutive or inducible gene transcription. This plays a key role in harnessing the transcriptional programs of both innate and adaptive immune cells due to its plasticity and environmental-driven nature, piloting myeloid and lymphoid cell fate decision with no change in their genomic sequence. In particular, epigenetic marks at the site of lineage specific transcription factors and maintenance of cell type-specific epigenetic modifications, referred to as "epigenetic memory", dictate cell differentiation, cytokine production and functional capacity following repeated antigenic exposure in memory T cells. Moreover, metabolic and epigenetic reprogramming occurring during a primary innate immune response leads to enhanced responses to secondary challenges, a phenomenon known as "trained immunity". Here we discuss how stable and dynamic epigenetic states control immune cell identity and plasticity in physiological and pathological conditions. Dissecting the regulatory circuits of cell fate determination and maintenance is of paramount importance for understanding the delicate balance between immune cell activation and tolerance, in healthy conditions and in autoimmune diseases. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Antonietta Liotti
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy
| | - Anne Lise Ferrara
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy.,Department of Translational Medical Sciences, Center for Basic and Clinical Immunology Research (CISI) and World Allergy Organization (WAO) Center of Excellence, University of Naples "Federico II", Naples, Italy
| | - Stefania Loffredo
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy.,Department of Translational Medical Sciences, Center for Basic and Clinical Immunology Research (CISI) and World Allergy Organization (WAO) Center of Excellence, University of Naples "Federico II", Naples, Italy
| | - Maria Rosaria Galdiero
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy.,Department of Translational Medical Sciences, Center for Basic and Clinical Immunology Research (CISI) and World Allergy Organization (WAO) Center of Excellence, University of Naples "Federico II", Naples, Italy
| | - Gilda Varricchi
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy.,Department of Translational Medical Sciences, Center for Basic and Clinical Immunology Research (CISI) and World Allergy Organization (WAO) Center of Excellence, University of Naples "Federico II", Naples, Italy
| | - Francesca Di Rella
- Department of Breast and Thoracic Oncology, Istituto Nazionale Tumori IRCCS Fondazione Pascale, Naples, Italy
| | - Giorgia Teresa Maniscalco
- Neurological Clinic and Stroke Unit and Multiple Sclerosis Center "A. Cardarelli" Hospital, Naples, Italy
| | - Martina Belardo
- Department of Translational Medical Sciences, Center for Basic and Clinical Immunology Research (CISI) and World Allergy Organization (WAO) Center of Excellence, University of Naples "Federico II", Naples, Italy
| | - Roberta Vastano
- Department of Translational Medical Sciences, Center for Basic and Clinical Immunology Research (CISI) and World Allergy Organization (WAO) Center of Excellence, University of Naples "Federico II", Naples, Italy
| | - Rosaria Prencipe
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy
| | - Laura Pignata
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Roberta Romano
- Department of Translational Medical Sciences, Pediatric Section, University of Naples "Federico II", Naples, Italy
| | - Giuseppe Spadaro
- Department of Translational Medical Sciences, Center for Basic and Clinical Immunology Research (CISI) and World Allergy Organization (WAO) Center of Excellence, University of Naples "Federico II", Naples, Italy
| | - Paola de Candia
- Department of Molecular Medicine and Medical Biotechnology, University of Naples "Federico II", Naples, Italy
| | - Antonio Pezone
- Department of Biology, University of Naples "Federico II", Naples, Italy
| | - Veronica De Rosa
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy
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Yang R, Pu D, Tan R, Wu J. Association of methylenetetrahydrofolate reductase ( MTHFR) gene polymorphisms (C677T and A1298C) with thyroid dysfunction: A meta-analysis and trial sequential analysis. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2022; 66:551-581. [PMID: 35758831 PMCID: PMC10697641 DOI: 10.20945/2359-3997000000471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 02/10/2022] [Indexed: 06/15/2023]
Abstract
Recent studies have shown that two common methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms (C677T and A1298C) might correlate with thyroid dysfunction, but the results remain inconsistent. We carried out a meta-analysis aiming to assess the relationship of both polymorphisms with thyroid dysfunction. The PubMed, EMBASE, CNKI (China National Knowledge Infrastructure), CBMdisc (China Biology Medicine disc), WeiPu and Wanfang databases were searched up to September 2021. Case-control and cohort studies on MTHFR polymorphism and thyroid dysfunction were identified. Eight studies from six publications were finally included in our meta-analysis, including 817 patients and 566 controls. After pooled analysis, we found that the MTHFR C677T polymorphism was associated with an increased risk of hypothyroidism (TT vs. CC+CT/recessive model: OR = 2.07, 95% CI: 1.02-4.20, P = 0.04; TT vs. CC/homozygote model: OR = 2.35, 95% CI: 1.13-4.86, P = 0.02), while trial sequential analysis (TSA) revealed that it could be a false positive result. The MTHFR A1298C polymorphism was related to a decreased risk of hypothyroidism (C vs. A/allele model: OR = 0.63, 95% CI: 0.44-0.92, P = 0.02; CC vs. AC+AA/recessive model: OR = 0.42, 95% CI: 0.22-0.79, P = 0.007; CC vs. AA/homozygote model: OR = 0.43, 95% CI: 0.25-0.85, P = 0.02), which was conclusive according to TSA. The results of this meta-analysis suggest that MTHFR A1298C seems to be a protective factor for hypothyroidism, while the MTHFR C677T polymorphism may be a risk factor. However, more well-designed studies with larger sample sizes are needed to obtain more reliable results of the association between the MTHFR C677T polymorphism and hypothyroidism.
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Affiliation(s)
- Rui Yang
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Jiangsu Women and Children Health Hospital, Nanjing, China
| | - Danhua Pu
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Jiangsu Women and Children Health Hospital, Nanjing, China
| | - Rongrong Tan
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Jiangsu Women and Children Health Hospital, Nanjing, China
| | - Jie Wu
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Jiangsu Women and Children Health Hospital, Nanjing, China,
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Association between Genetic Polymorphisms in Methylenetetrahydrofolate Reductase and Risk of Autoimmune Diseases: A Systematic Review and Meta-Analysis. DISEASE MARKERS 2022; 2022:4568145. [PMID: 35686035 PMCID: PMC9173919 DOI: 10.1155/2022/4568145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/30/2022] [Accepted: 05/13/2022] [Indexed: 11/17/2022]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is a critical rate-limiting enzyme in the homocysteine/methionine metabolism pathway that is implicated in the pathogenesis and progression of autoimmune diseases. Previous association studies have been performed to investigate the effect of polymorphisms in MTHFR on the risk of autoimmune diseases with inconsistent results. Therefore, this meta-analysis was designed to assess the association between the MTHFR 677 C/T and 1298 A/C polymorphisms and the susceptibility to autoimmune diseases. We identified reports by a literature search in the following electronic databases: PubMed, Ovid, Web of science, and China National Knowledge Infrastructure. Statistical analyses of the summary odds ratios (ORs) and 95% confidence intervals (CIs) were done using STATA software. In a recessive genetic model, the MTHFR 677 C/T polymorphism was associated with an increased risk of Behcet's disease (OR = 1.97, 95% CI, 1.31-2.97), multiple sclerosis (OR = 1.57, 95% CI, 1.03-2.38), and ankylosing spondylitis (OR = 2.90, 95% CI, 1.92-4.38). The MTHFR 1298 A/C polymorphism was associated an increased risk of multiple sclerosis in a heterozygote comparison (OR = 2.36, 95% CI, 1.29-4.30) and in a dominant model (OR = 2.31, 95% CI, 1.24-4.29). This meta-analysis demonstrated that the MTHFR 677 C/T was a risk factor for Behcet's disease, multiple sclerosis, and ankylosing spondylitis, and the 1298 A/C was a risk factor for multiple sclerosis.
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Das D, Banerjee A, Jena AB, Duttaroy AK, Pathak S. Essentiality, relevance, and efficacy of adjuvant/combinational therapy in the management of thyroid dysfunctions. Biomed Pharmacother 2022; 146:112613. [PMID: 35062076 DOI: 10.1016/j.biopha.2022.112613] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 12/14/2021] [Accepted: 01/02/2022] [Indexed: 11/02/2022] Open
Abstract
Thyroid dysfunction is the most prevalent endocrine disorder worldwide having an epidemiology of 11% in Indians, 4.6% in the United Kingdom, and 2% in the United States of America among the overall population. The common thyroid disorders include hypothyroidism, hyperthyroidism, Hashimoto's thyroiditis, and thyroid cancer. This review briefly elaborates the molecular regulation and mechanism of thyroid hormone, and its associated thyroid disorders. The thyroid hormones regulate critical biochemical functions in brain development and function. Hypothyroidism is mainly associated with dysregulation of cytokines, increased ROS production, and altered signal transduction in major regions of the brain. In addition, it is associated with reduced antioxidant capacity and increased oxidative stress in humans. Though 70% of thyroid disorders are caused by heredity, environmental factors have a significant influence in developing autoimmune thyroid disorders in people who are predisposed to them. This drives us to understand the relationship between environmental factors and thyroid dysregulated disorders. The treatment option for the thyroid disorder includes antithyroid medications, receiving radioactive iodine therapy, or surgery at a critical stage. However, antithyroid drugs are not typically used long-term in thyroid disease due to the high recurrence rate. Adjuvant treatment of antioxidants can produce better outcomes with anti-thyroid drug treatment. Thus, Adjuvant therapy has been proven as an effective strategy for managing thyroid dysfunction, herbal remedies can be used to treat thyroid dysfunction in the future, which in turn can reduce the prevalence of thyroid disorders.
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Affiliation(s)
- Diptimayee Das
- Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Chennai 603103, India
| | - Antara Banerjee
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Chennai, India
| | | | - Asim K Duttaroy
- Department of Nutrition, Institute of Medical Sciences, Faculty of Medicine, University of Oslo, Norway.
| | - Surajit Pathak
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Chennai, India.
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Yadav S, Longkumer I, Joshi S, Saraswathy KN. Methylenetetrahydrofolate reductase gene polymorphism, global DNA methylation and blood pressure: a population based study from North India. BMC Med Genomics 2021; 14:59. [PMID: 33639933 PMCID: PMC7912464 DOI: 10.1186/s12920-021-00895-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 02/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Hypertension is a complex disorder affected by gene-environment interactions. Methylenetetrahydrofolate reductase (MTHFR) gene is one of the genes in One Carbon Metabolic (OCM) pathway that affects both blood pressure and epigenetic phenomenon. MTHFR C677T gene polymorphism leads to reduced methylation capacity via increased homocysteine concentrations. Global DNA methylation (5mC%) also gets affected in conditions such as hypertension. However, no study is found to understand hypertension in terms of both genetics and epigenetics. The present study aims to understand the relation between methylation, MTHFR C677T gene polymorphism and hypertension. It also tries to understand relation (if any) between methylation and anti-hypertensive drugs. METHODS This is a cross-sectional study where data were collected from a total of 1634 individuals of either sex in age group 35-65 years. Hypertensives (SBP ≥ 140 mm Hg and DBP ≥ 90 mm Hg) (on treatment/not on treatment) and absolute controls were 236 (cases) and 307 (controls), respectively. All the samples were subjected to MTHFR C677T gene polymorphism screening (PCR-RFLP) and global DNA methylation assay (ELISA based colorimetric assay). Results of both the analyses were obtained on 218 cases, 263 controls. RESULTS Median 5mC% was relatively lower among cases (p > 0.05) compared to controls, despite controlling for confounders (age, sex, smoking, alcohol, diet) (r2-0.92, p-0.08). Cases not on medication had significantly reduced 5mC% compared to controls (p < 0.05), despite adjusting for confounders (r2-0.857, p-0.01). Among cases (irrespective of treatment), there was a significant variation in 5mC% across the three genotypes i.e. CC, CT and TT, with no such variation among controls. Cases (not on medication) with TT genotype had significantly lower methylation levels compared to the TT genotype controls and cases (on medication) (p < 0.01). CONCLUSION Global DNA hypomethylation seems to be associated with hypertension and antihypertensive drugs seem to improve methylation. Hypertensive individuals with TT genotype but not on medication are more likely to be prone to global DNA hypomethylation. Important precursors in OCM pathway include micronutrients such as vitamin B-12, B-9 and B-6; their nutritional interventions (either dietary or supplement) may serve as strategies to prevent hypertension at population level. However, more epidemiological-longitudinal studies are needed for further validation.
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Affiliation(s)
- Suniti Yadav
- Indian Council of Medical Research, New Delhi, 110029 India
| | | | - Shipra Joshi
- Manbhum Ananda Ashram Nityananda Trust-MANT, Kolkata, West Bengal 700078 India
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Ait Boujmia OK, Nadifi S, Dehbi H, Lamchahab M, Quessar A. The influence of DNMT3A and DNMT3B gene polymorphisms on acute myeloid leukemia risk in a Moroccan population. Curr Res Transl Med 2020; 68:191-195. [PMID: 32912818 DOI: 10.1016/j.retram.2020.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 05/22/2020] [Accepted: 08/15/2020] [Indexed: 01/04/2023]
Abstract
Acute myeloid leukemia (AML) is a very complex disease that is linked to environmental, genetic and epigenetic factors. Several Studies have found that aberrations in DNA methylation process play a crucial role in leukemogenesis. The aim of this case control study was to evaluate the association between rs1569686, rs2424913 polymorphisms located in DNMT3B gene and rs7590760 polymorphism located in DNMT3A gene and AML risk in a Moroccan population. MATERIALS AND METHODS The present study was conducted in 142 cases of AML and 179 control subjects from the Moroccan population. Genomic DNA was isolated from whole blood samples by salting-out method and the genotype of the three polymorphisms was determined by the PCR-RFLP technique. RESULTS The study results indicated that rs1569686 polymorphism was significantly associated with the risk of AML in dominant model (OR=1.72, 95 % CI 1.01-2.95, P=0.04), but not in recessive model. In stratified analysis by gender, statistically significant association between the rs2424913 CT genotype and AML was found among males (OR=2.05, 95 % CI 1.00-4.19, P=0.04). Similarly, the rs1569686 TT genotype was associated with an increase risk of AML (OR=3.21, 95 % CI 1.15-8. 98, P=0.02), this association was also found under dominant genetic model (OR=2.47, 95 % CI 1.07-5. 67, P=0.03) among males. However, the rs2424913 polymorphism was not associated with AML. CONCLUSION Our findings have shown that rs1569686 polymorphism might be a risk factor of AML in males. While, the rs2424913 polymorphism was not associated with AML. Further studies with a large sample size are needed to validate our results.
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Affiliation(s)
- Oum Kaltoum Ait Boujmia
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco.
| | - Sellama Nadifi
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco
| | - Hind Dehbi
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco
| | - Mouna Lamchahab
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco
| | - Asma Quessar
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco; Department of Onco-Hematology, Ibn Rochd University Hospital, Casablanca, Morocco
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Pitto L, Gorini F, Bianchi F, Guzzolino E. New Insights into Mechanisms of Endocrine-Disrupting Chemicals in Thyroid Diseases: The Epigenetic Way. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17217787. [PMID: 33114343 PMCID: PMC7662297 DOI: 10.3390/ijerph17217787] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/18/2020] [Accepted: 10/22/2020] [Indexed: 12/26/2022]
Abstract
In recent years, the presence in the environment of chemical compounds with thyroid-disrupting effects is progressively increased. This phenomenon has risen concern for human health as the preservation of thyroid system homeostasis is essential for fetal development and for maintaining psychological and physiological wellbeing. An increasing number of studies explored the role of different classes of toxicants in the occurrence and severity of thyroid diseases, but large epidemiological studies are limited and only a few animal or in vitro studies have attempted to identify the mechanisms of chemical action. Recently, epigenetic changes such as alteration of methylation status or modification of non-coding RNAs have been suggested as correlated to possible deleterious effects leading to different thyroid disorders in susceptible individuals. This review aims to analyze the epigenetic alterations putatively induced by chemical exposures and involved in the onset of frequent thyroid diseases such as thyroid cancer, autoimmune thyroiditis and disruption of fetal thyroid homeostasis.
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Affiliation(s)
- Letizia Pitto
- Institute of Clinical Physiology, National Research Council, 56124 Pisa, Italy; (F.G.); (F.B.); (E.G.)
- Correspondence: ; Tel.: + 39-050-3153090
| | - Francesca Gorini
- Institute of Clinical Physiology, National Research Council, 56124 Pisa, Italy; (F.G.); (F.B.); (E.G.)
| | - Fabrizio Bianchi
- Institute of Clinical Physiology, National Research Council, 56124 Pisa, Italy; (F.G.); (F.B.); (E.G.)
| | - Elena Guzzolino
- Institute of Clinical Physiology, National Research Council, 56124 Pisa, Italy; (F.G.); (F.B.); (E.G.)
- Department of Biosciences, University of Milan, 20133 Milan, Italy
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Wajda A, Łapczuk-Romańska J, Paradowska-Gorycka A. Epigenetic Regulations of AhR in the Aspect of Immunomodulation. Int J Mol Sci 2020; 21:E6404. [PMID: 32899152 PMCID: PMC7504141 DOI: 10.3390/ijms21176404] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/27/2020] [Accepted: 08/28/2020] [Indexed: 02/07/2023] Open
Abstract
Environmental factors contribute to autoimmune disease manifestation, and as regarded today, AhR has become an important factor in studies of immunomodulation. Besides immunological aspects, AhR also plays a role in pharmacological, toxicological and many other physiological processes such as adaptive metabolism. In recent years, epigenetic mechanisms have provided new insight into gene regulation and reveal a new contribution to autoimmune disease pathogenesis. DNA methylation, histone modifications, chromatin alterations, microRNA and consequently non-genetic changes in phenotypes connect with environmental factors. Increasing data reveals AhR cross-roads with the most significant in immunology pathways. Although study on epigenetic modulations in autoimmune diseases is still not well understood, therefore future research will help us understand their pathophysiology and help to find new therapeutic strategies. Present literature review sheds the light on the common ground between remodeling chromatin compounds and autoimmune antibodies used in diagnostics. In the proposed review we summarize recent findings that describe epigenetic factors which regulate AhR activity and impact diverse immunological responses and pathological changes.
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Affiliation(s)
- Anna Wajda
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland;
| | - Joanna Łapczuk-Romańska
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University, 70-111 Szczecin, Poland;
| | - Agnieszka Paradowska-Gorycka
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland;
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Hu YF, Hua L, Tuo X, Shi TT, Yang YL, Liu YF, Yan ZY, Xin Z. Preliminary evidence of the association between DNAm and orbital volumetry in GO. Endocr Connect 2020; 9:EC-20-0147.R2. [PMID: 32508316 PMCID: PMC7354721 DOI: 10.1530/ec-20-0147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 06/04/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The pathogenesis underlying the alterations of orbital architecture in Graves' orbitopathy (GO) is not yet fully understood. The present study aimed to investigate the association of DNA methylation in peripheral blood and orbital volumetry in Chinese patients with GO. METHODS A total of 35 GO subjects (70 orbits) were subjected to computed tomography (CT) scan. The total cross-sectional area of the extraocular muscles (orbital muscles, OM), total orbit area (TOA), and the exophthalmometry were measured, and OM/TOA ratio was calculated. Targeted bisulfite sequencing was performed on seven candidate genes. RESULTS No significant correlation was established between the DNA methylation levels of these genes and exophthalmometry. The MBP methylation level was found to be correlated with OM/TOA ratio (P<0.05). Multiple linear regression analysis on parameters, including age, sex, TRAb, duration of GO, and DNA methylation levels of seven genes with OM/TOA ratio confirmed that MBP and OM/TOA ratio had a significant correlation (P<0.05). The partial least squares analysis showed that the top three genes with the highest loadings were MBP, BOLL, and BECN1, and OM/TOA ratio affected the DNA methylation block than exophthalmometry. CONCLUSIONS This study provided preliminary evidence that MBP is a potential gene associated with OM enlargement in GO patients according to the combination of DNA methylation sequencing and orbital CT measurement.
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Affiliation(s)
- Ya-Fen Hu
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Department of Endocrinology, The People’s Hospital of Daxing District, Beijing, China
| | - Lin Hua
- Department of Mathematics, School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - Xiu Tuo
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Ting-Ting Shi
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yi-Lin Yang
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yun-Fu Liu
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zhong-Yu Yan
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zhong Xin
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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Kyrgios I, Fragou A, Kotanidou EP, Mouzaki K, Efraimidou S, Tzimagiorgis G, Galli-Tsinopoulou A. DNA methylation analysis within the IL2RA gene promoter in youth with autoimmune thyroid disease. Eur J Clin Invest 2020; 50:e13199. [PMID: 31943147 DOI: 10.1111/eci.13199] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/17/2019] [Accepted: 01/08/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Alpha-subunit of the interleukin-2 receptor (IL2RA) is involved in the regulation of T-cell function and has been related to autoimmune thyroid disease (AITD). Although the exact mechanisms are not fully understood, promoter methylation might account for differences in gene expression. The aim of this study was to investigate whether there are differences in the percentage of DNA methylation within the IL2RA gene promoter in young patients with AITD. MATERIALS AND METHODS In a cross-sectional design, the presence of DNA methylation in the IL2RA gene promoter was quantified, by real-time PCR and melting curve analysis, in modified genomic DNA isolated from blood samples of a total of 149 children and adolescents with AITD, including patients with Hashimoto thyroiditis (ΗΤ) (n = 60), Graves' disease (GD) (n = 9), concurrent diagnosis of HT and type 1 diabetes (T1DM + HT) (n = 25), and healthy controls (n = 55). RESULTS The percentage of DNA methylation in the IL2RA gene promoter was significantly decreased in patients with GD (26.0 ± 4.2%) but not in those with HT (36.3 ± 1.4%) in comparison with controls (41.3 ± 1.5%). CONCLUSIONS The observed DNA hypomethylation in the IL2RA gene promoter in patients with GD might be related to its increased expression, thus contributing to the etiopathogenesis of GD in childhood and adolescence.
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Affiliation(s)
- Ioannis Kyrgios
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece.,Laboratory of Biological Chemistry, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Aikaterini Fragou
- Laboratory of Biological Chemistry, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Eleni P Kotanidou
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece
| | - Konstantina Mouzaki
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece.,Laboratory of Biological Chemistry, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Georgios Tzimagiorgis
- Laboratory of Biological Chemistry, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Assimina Galli-Tsinopoulou
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece
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Lindermayr C, Rudolf EE, Durner J, Groth M. Interactions between metabolism and chromatin in plant models. Mol Metab 2020; 38:100951. [PMID: 32199818 PMCID: PMC7300381 DOI: 10.1016/j.molmet.2020.01.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/10/2020] [Accepted: 01/24/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND One of the fascinating aspects of epigenetic regulation is that it provides means to rapidly adapt to environmental change. This is particularly relevant in the plant kingdom, where most species are sessile and exposed to increasing habitat fluctuations due to global warming. Although the inheritance of epigenetically controlled traits acquired through environmental impact is a matter of debate, it is well documented that environmental cues lead to epigenetic changes, including chromatin modifications, that affect cell differentiation or are associated with plant acclimation and defense priming. Still, in most cases, the mechanisms involved are poorly understood. An emerging topic that promises to reveal new insights is the interaction between epigenetics and metabolism. SCOPE OF REVIEW This study reviews the links between metabolism and chromatin modification, in particular histone acetylation, histone methylation, and DNA methylation, in plants and compares them to examples from the mammalian field, where the relationship to human diseases has already generated a larger body of literature. This study particularly focuses on the role of reactive oxygen species (ROS) and nitric oxide (NO) in modulating metabolic pathways and gene activities that are involved in these chromatin modifications. As ROS and NO are hallmarks of stress responses, we predict that they are also pivotal in mediating chromatin dynamics during environmental responses. MAJOR CONCLUSIONS Due to conservation of chromatin-modifying mechanisms, mammals and plants share a common dependence on metabolic intermediates that serve as cofactors for chromatin modifications. In addition, plant-specific non-CG methylation pathways are particularly sensitive to changes in folate-mediated one-carbon metabolism. Finally, reactive oxygen and nitrogen species may fine-tune epigenetic processes and include similar signaling mechanisms involved in environmental stress responses in plants as well as animals.
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Affiliation(s)
- Christian Lindermayr
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstädter Landstrasse 1, 85764 München/Neuherberg, Germany.
| | - Eva Esther Rudolf
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstädter Landstrasse 1, 85764 München/Neuherberg, Germany
| | - Jörg Durner
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstädter Landstrasse 1, 85764 München/Neuherberg, Germany
| | - Martin Groth
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstädter Landstrasse 1, 85764 München/Neuherberg, Germany.
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de Souza MR, Rohr P, Kahl VFS, Kvitko K, Cappetta M, Lopes WM, Simon D, da Silva J. The influence of polymorphisms of xenobiotic-metabolizing and DNA repair genes in DNA damage, telomere length and global DNA methylation evaluated in open-cast coal mining workers. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:109975. [PMID: 31787382 DOI: 10.1016/j.ecoenv.2019.109975] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
Coal plants represent one of the main sources of environmental pollution due to the combustion process of this mineral and the consequent release of gases and particles which, in significant quantities, can lead to a potential risk to health and the environment. The susceptibility of individuals to the genotoxic effects of coal mining can be modulated by genetic variations in the xenobiotic detoxification and DNA repair processes. The aim of this study was to evaluate if xenobiotic metabolism polymorphism, base excision repair polymorphisms and non-homologous end joining repair polymorphism, could modify individual susceptibility to genomic instability and epigenetic alterations induced in workers by occupational exposure to coal. In this study, polymerase chain reaction was used to examine the polymorphic sites. The sample population comprising 70 coal mine workers and 71 workers non-exposed to coal. Our results demonstrated the effect of individual genotypes on different biomarkers evaluated. Significant decrease in % of global DNA methylation were observed in CYP1A1 Val/- exposed individuals compared to CYP1A1 Ile/Ile individuals. Coal workers who carried the XRCC4 Ile/Ile genotype showed decrease NBUD frequencies, while the XRCC4 Thr/- genotype was associated with decrease in Buccal micronucleus cells for the group not exposed. No influence of GSTM1 null, GSTT1 null, GSTP1 Ile105Val, hOGG1 Ser326Cys, XRCC1 Arg194Trp polymorphisms was observed. Thus, the current study reinforces the importance of considering the effect of metabolizing and repair variant genotypes on the individual susceptibility to incorporate DNA damage, as these processes act in a coordinated manner to determine the final response to coal exposure.
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Affiliation(s)
- Melissa Rosa de Souza
- Laboratory of Genetic Toxicology, Post-Graduate Program in Cellular and Molecular Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Paula Rohr
- Laboratory of Genetic Toxicology, Post-Graduate Program in Cellular and Molecular Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | | | - Kátia Kvitko
- Laboratory of Immunogenetics, Post-Graduate Program in Genetics and Molecular Biology (PPGBM), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Mónica Cappetta
- Laboratory of Genetic Epidemiology, Department of Genetics, Medicine School, Universidad de la República, Montevideo, Uruguay
| | - Wilner Martinez Lopes
- Department of Genetic Toxicology and Chromosome Pathology, Instituto de Investigaciones Biologicas Clemente Estable, Montevideo, Uruguay
| | - Daniel Simon
- Laboratory of Human Molecular Genetics, Post-Graduate Program in Cellular and Molecular Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Juliana da Silva
- Laboratory of Genetic Toxicology, Post-Graduate Program in Cellular and Molecular Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil; Laboratory of Genetic Toxicology, La Salle University (UniLaSalle), Canoas, RS, Brazil.
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Wu TT, Ma YW, Zhang X, Dong W, Gao S, Wang JZ, Zhang LF, Lu D. Myocardial tissue-specific Dnmt1 knockout in rats protects against pathological injury induced by Adriamycin. J Transl Med 2020; 100:974-985. [PMID: 32051532 PMCID: PMC7312399 DOI: 10.1038/s41374-020-0402-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 02/03/2020] [Accepted: 02/03/2020] [Indexed: 12/20/2022] Open
Abstract
Novel molecular mechanisms of the pathophysiology of heart failure (HF) are continuously being discovered, including epigenetic regulation. Among epigenetic marks, the role of DNA hypomethylation in shaping heart morphology and function in vivo and the pathogenesis of cardiomyopathy and/or HF, especially in adults, has not been clearly established. Here we show that the strong expression of DNA methyltransferase 1 (Dnmt1) is obviously downregulated in the WT adult rat heart with age. By contrast, the expression of Dnmt1 is upregulated suddenly in heart tissues from pressure overload-induced HF mice and adriamycin-induced cardiac injury and HF mice, consistent with the increased expression of Dnmt1 observed in familial hypertrophic cardiomyopathy (FHCM) patients. To further assess the role of Dnmt1, we generated myocardium-specific Dnmt1 knockout (Dnmt1 KO) rats using CRISPR-Cas9 technology. Echocardiographic and histopathological examinations demonstrated that Dnmt1 deficiency is associated with resistance to cardiac pathological changes and protection at the global and organization levels in response to pathological stress. Furthermore, Dnmt1 deficiency in the myocardium restricts the expressional reprogramming of genes and activates pathways involved in myocardial protection and anti-apoptosis in response to pathological stress. Transcriptome and genome-wide DNA methylation analyses revealed that these changes in regulation are linked to alterations in the methylation status of genes due to Dnmt1 knockout. The present study is the first to investigate in vivo the impact of genome-wide cardiac DNA methyltransferase deficiency on physiological development and the pathological processes of heart tissues in response to stress. The exploration of the role of epigenetics in the development, modification, and prevention of cardiomyopathy and HF is in a very preliminary stage but has an infinite future.
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Affiliation(s)
- Tong-Tong Wu
- 0000 0001 0706 7839grid.506261.6Beijing Engineering Research Center for Experimental Animal Models of Human Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuan-Wu Ma
- 0000 0001 0706 7839grid.506261.6Beijing Engineering Research Center for Experimental Animal Models of Human Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xu Zhang
- 0000 0001 0706 7839grid.506261.6Beijing Engineering Research Center for Experimental Animal Models of Human Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei Dong
- 0000 0001 0706 7839grid.506261.6Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shan Gao
- 0000 0001 0706 7839grid.506261.6Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ji-Zheng Wang
- 0000 0001 0706 7839grid.506261.6State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lian-Feng Zhang
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Dan Lu
- Beijing Engineering Research Center for Experimental Animal Models of Human Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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25
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Hirai N, Watanabe M, Inoue N, Kinoshita R, Ohtani H, Hidaka Y, Iwatani Y. Association of IL6 gene methylation in peripheral blood cells with the development and prognosis of autoimmune thyroid diseases. Autoimmunity 2019; 52:251-255. [DOI: 10.1080/08916934.2019.1669568] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Nachi Hirai
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
| | - Mikio Watanabe
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
| | - Naoya Inoue
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
- Laboratory for Clinical Investigation, Osaka University Hospital, Suita, Japan
| | - Riku Kinoshita
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hiroki Ohtani
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoh Hidaka
- Laboratory for Clinical Investigation, Osaka University Hospital, Suita, Japan
| | - Yoshinori Iwatani
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
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Zhang Y, Li Y, Luo L, He Q, Gao Y, Feng H, Zhao L, Wei W, Fu S, Sun D. Factors Affecting Differential Methylation of DNA Promoters in Arsenic-Exposed Populations. Biol Trace Elem Res 2019; 189:437-446. [PMID: 30220071 DOI: 10.1007/s12011-018-1504-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/30/2018] [Indexed: 01/15/2023]
Abstract
The exposure/biotransformation of inorganic arsenic (iAs) may perturb DNA methylation patterns and subsequently influence disease risk by altering the expression of key genes. Interindividual variation in patterns of DNA methylation can be explained by the influence of environmental, genetic, and stochastic factors. Here, we examined promoter DNA methylation levels with urinary arsenical concentrations and investigated the genetic and nongenetic determinants of DNA methylation in 105 samples collected from populations in Shanxi Province, China, with high levels of arsenic in drinking water. Arsenic concentrations in water were determined by atomic absorption spectrophotometry (AA-6800, Shimadzu Co., Kyoto, Japan). Urine samples were measured using an atomic absorption spectrophotometer with an arsenic speciation pretreatment system (ASA-2sp, Shimadzu Co. Kyoto, Japan) for detection. Gene-specific (CDH1, EREG, ERCC2, GSTP1, and MGMT) DNA methylation was quantified by targeted bisulfite sequencing. Single-nucleotide polymorphism (SNP) genotyping was performed using a custom-by-design 2 × 48-Plex SNPscan™ Kit. These results revealed CDH1 with promoter DNA methylation levels associated with iAs. After the exclusion of confounding factors, age was correlated with increased methylation of the CDH1 gene. The susceptibility of the CDH1 and GSTP1 gene promoters to methylation was increased in individuals carrying the DNMT3B (SNP rs2424932) GA genotype, and the susceptibility of the CDH1 gene promoters to methylation was increased in individuals carrying the DNMT3B (SNP rs6087990) TC genotype. Although the above results must still be replicated in larger samples, the findings improve our understanding of the pathogenesis of arsenic and may highlight certain DNA methylation markers as attractive surrogate markers for prevention research.
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Affiliation(s)
- Yanting Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China
| | - Yuanyuan Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China
| | - Lanrong Luo
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China
| | - Qian He
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China
| | - Hongqi Feng
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China
| | - Lijun Zhao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China
| | - Wei Wei
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China
| | - Songbo Fu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China.
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China.
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, China.
- Key Lab of Etiology and Epidemiology, Education Bureau of Hei Long Jiang Province & Ministry of Health, Harbin, 150081, China.
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Abu-Hassan DW, Alhouri AN, Altork NA, Shkoukani ZW, Altamimi TS, Alqaisi OM, Mustafa B. MTHFR gene polymorphisms in hypothyroidism and hyperthyroidism among Jordanian females. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2019; 63:280-287. [PMID: 31066758 PMCID: PMC10522201 DOI: 10.20945/2359-3997000000133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/18/2019] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Methylenetetrahydrofolate reductase (MTHFR) is involved in DNA methylation that is associated with autoimmune pathology. We investigated the association between MTHFR genetic polymorphisms at g.677C>T and g.1298A>C and their haplotypes, and the risk of thyroid dysfunction among Jordanian females. SUBJECTS AND METHODS A case-control study involving 98 hypothyroidism cases, 66 hyperthyroidism cases and 100 controls was conducted. Polymerase chain reaction/restriction fragment length polymorphism technique was performed to determine genotypes. Statistical analysis using SPSS software was performed. RESULTS Genetic analysis showed a significant difference in genotype frequency of g.1298A>C between cases, and controls [hypothyroidism: AA (45.9%), AC (37.8%), CC (16.3%); hyperthyroidism: AA (9.1%), AC (69.7%), CC (21.2%); controls: AA (37.8%), AC (29.6%), CC (32.7%); CChypo vs. AAhypo: 2.55, 95% CI: (1.18-5.52); OR at least on Chypo: 1.79, 95% CI: (1.07-2.99)]; CChyper vs. AAhyper: 4.01, 95% CI: (1.79-9.01); OR at least on Chyper: 0.18, 95% CI: (0.07-0.48)]. There was no significant difference in genotype frequency of g.677C>T between cases and controls [hypothyroidism: CC (50.0%), CT (32.7%), TT (17.3%); hyperthyroidism: CC (77.3%), CT (15.2%), TT (7.6%); controls: CC (55.6%), CT (32.3%), TT (12.1%)]. There was a significant difference of MTHFR haplotypes among hypothyroidism cases and controls. TA and CC had a lower hypothyroidism risk whereas; TC showed a higher risk. CONCLUSIONS g.1298A>C genetic polymorphism of MTHFR may modulate the risk of thyroid disease. CC, TA, and TC haplotypes affect the risk of hypothyroidism. Larger samples should be included in the future to verify the role of MTHFR polymorphisms in thyroid diseases.
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Affiliation(s)
- Diala W Abu-Hassan
- Department of Physiology and Biochemistry, School of Medicine, University of Jordan, Amman, Jordan
| | | | | | | | | | | | - Baha Mustafa
- School of Medicine, University of Jordan, Amman, Jordan
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Yazdanpanahi N, Etemadifar M, Shams E. DNMT3B-579G>T (rs1569686G>T) polymorphism and the risk of multiple sclerosis in a subset of Iranian population. IRANIAN JOURNAL OF NEUROLOGY 2019; 18:70-75. [PMID: 31565203 PMCID: PMC6755508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Background: Deoxyribonucleic acid (DNA) methyltransferase 3 beta (DNMT3B) gene encodes an MT enzyme involving in de novo methylation of DNA. The present investigation aimed to explore the association of DNMT3B-579G>T (rs1569686) polymorphism with multiple sclerosis (MS). Methods: 130 Iranian patients with MS and 130 controls were genotyped for the DNMT3B-579G>T using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Results: There was no statistically significant association between DNMT3B-579G>T and susceptibility to MS. The alleles and genotypes of DNMT3B-579G>T did not have different risks of MS development under various models [T vs. G (P = 0.86); GTvs. GG (P = 0.48); TT vs. GG (P > 0.99); GT+TT vs. GG (P = 0.60), and TT vs. GG+GT (P = 0.87)]. Also, there was no statistically significant association between genotypes and clinical and demographic characteristics of patients (P > 0.05). Conclusion: The current findings suggest that DNMT3B-579G>T is probably not a crucial potential risk marker in molecular diagnostics of MS among Iranian. However, to the best of our knowledge, this is the first genetic association study about the DNMT3B polymorphisms and MS. Therefore, further surveys should be included to estimate the exact relevance of DNMT3B gene to the development of autoimmune disorders like MS.
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Affiliation(s)
- Nasrin Yazdanpanahi
- Department of Biology and Genetics, Falavarjan Branch, Islamic Azad University, Isfahan, Iran
| | - Masoud Etemadifar
- Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran,Isfahan Multiple Sclerosis Research Center, Isfahan, Iran
| | - Elaheh Shams
- Young Researchers and Elite Club, Falavarjan Branch, Islamic Azad University, Isfahan, Iran
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Mazzone R, Zwergel C, Artico M, Taurone S, Ralli M, Greco A, Mai A. The emerging role of epigenetics in human autoimmune disorders. Clin Epigenetics 2019; 11:34. [PMID: 30808407 PMCID: PMC6390373 DOI: 10.1186/s13148-019-0632-2] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 02/12/2019] [Indexed: 02/06/2023] Open
Abstract
Epigenetic pathways play a pivotal role in the development and function of the immune system. Over the last decade, a growing body of studies has been published out seeking to explain a correlation between epigenetic modifications and the development of autoimmune disorders. Epigenetic changes, such as DNA methylation, histone modifications, and noncoding RNAs, are involved in the pathogenesis of autoimmune diseases mainly by regulating gene expression. This paper reviews the importance of epigenetic alterations during the development of the most prevalent human autoimmune diseases, such as systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), systemic sclerosis (SSc), Sjogren’s syndrome (SS), autoimmune thyroid diseases (AITD), and type 1 diabetes (T1D), aiming to provide new insights in the pathogenesis of autoimmune diseases and the possibility to develop novel therapeutic approaches targeting the epigenome.
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Affiliation(s)
- Roberta Mazzone
- Department of Chemistry and Technologies of Drugs, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy.,Center for Life Nano Science@Sapienza, Italian Institute of Technology, Viale Regina Elena 291, 00161, Rome, Italy
| | - Clemens Zwergel
- Department of Chemistry and Technologies of Drugs, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Marco Artico
- Department of Sense Organs, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Samanta Taurone
- IRCCS G.B. Bietti Foundation, Via Livenza, 3, 00198, Rome, Italy
| | - Massimo Ralli
- Department of Sense Organs, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Antonio Greco
- Department of Sense Organs, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Antonello Mai
- Department of Chemistry and Technologies of Drugs, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy. .,Pasteur Institute - Cenci Bolognetti Foundation, Sapienza Università di Roma, P.le Aldo Moro 5, 00185, Rome, Italy.
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Lei W, Xu Y, Su J, Chong CM, Su HX, Luo J, Fang EF, Bao Z, Chen G. Applications of high-throughput ‘omics’ data in the study of frailty. TRANSLATIONAL MEDICINE OF AGING 2019. [DOI: 10.1016/j.tma.2019.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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Provenzi L, Carli PD, Fumagalli M, Giorda R, Casavant S, Beri S, Citterio A, D'Agata A, Morandi F, Mosca F, Borgatti R, Montirosso R. Very preterm birth is associated with PLAGL1 gene hypomethylation at birth and discharge. Epigenomics 2018; 10:1121-1130. [PMID: 30070601 DOI: 10.2217/epi-2017-0123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIM Recent findings show that DNA methylation is susceptible to very preterm (VPT) birth and to the experience of the early stay in the neonatal intensive care unit. The aim of the study was to compare PLAGL1 methylation between VPT and full-term (FT) infants at birth as well as between VPT infants at discharge and FT infants at birth. METHODS DNA was collected from cord blood of 56 VPT and 27 FT infants at birth and from peripheral blood in VPT infants at neonatal intensive care unit discharge. Sociodemographic and neonatal variables were considered. RESULTS PLAGL1 methylation at birth and at discharge were highly correlated in VPT infants. Lower methylation emerged in VPT infants at birth and discharge compared to FT counterparts. CONCLUSION PLAGL1 hypomethylation emerged as a potential epigenetic mark of VPT birth. Future research is warranted to assess the functional consequences of PLAGL1 diminished methylation in VPT infants' development.
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Affiliation(s)
- Livio Provenzi
- 0-3 Center for the at-Risk Infant, Scientific Institute, IRCCS Eugenio Medea, 238422, Bosisio Parini, Italy
| | - Pietro De Carli
- 0-3 Center for the at-Risk Infant, Scientific Institute, IRCCS Eugenio Medea, 238422, Bosisio Parini, Italy
| | - Monica Fumagalli
- NICU, Department of Clinical Sciences & Community Health, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 201223, Milan, Italy
| | - Roberto Giorda
- Molecular Biology Laboratory, Scientific Institute, IRCCS Eugenio Medea, 238424, Bosisio Parini, Italy
| | - Sharon Casavant
- School of Nursing, University of Connecticut, Storrs, CT, 060325, USA
| | - Silvana Beri
- Molecular Biology Laboratory, Scientific Institute, IRCCS Eugenio Medea, 238424, Bosisio Parini, Italy
| | - Andrea Citterio
- Molecular Biology Laboratory, Scientific Institute, IRCCS Eugenio Medea, 238424, Bosisio Parini, Italy
| | - Amy D'Agata
- College of Nursing, University of Rhode Island, Kingston, RI, 028816, USA
| | | | - Fabio Mosca
- NICU, Department of Clinical Sciences & Community Health, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 201223, Milan, Italy
| | - Renato Borgatti
- Neuropsychiatry & Neurorehabilitation Unit, Scientific Institute, IRCCS Eugenio Medea, 238422, Bosisio Parini, Italy
| | - Rosario Montirosso
- 0-3 Center for the at-Risk Infant, Scientific Institute, IRCCS Eugenio Medea, 238422, Bosisio Parini, Italy
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A case report of a novel, integrative approach to Hashimoto’s thyroiditis with unexpected results. ADVANCES IN INTEGRATIVE MEDICINE 2018. [DOI: 10.1016/j.aimed.2018.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Xin Z, Hua L, Shi TT, Tuo X, Yang FY, Li Y, Cao X, Yang JK. A genome-wide DNA methylation analysis in peripheral blood from patients identifies risk loci associated with Graves' orbitopathy. J Endocrinol Invest 2018; 41:719-727. [PMID: 29190000 DOI: 10.1007/s40618-017-0796-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 11/14/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Graves' orbitopathy (GO) is an inflammatory orbital disease of autoimmune origin with the potential to cause severe functional and psychosocial effects. The pathogenesis has not been fully elucidated. We investigated whether DNA methylation was associated with GO incidence in Chinese patients. MATERIALS AND METHODS Six GO patients and six age-matched controls were recruited, and genome-wide DNA methylation patterns were analyzed in their peripheral blood. t tests were performed to determine differential methylated sites in genomic regions and the univariable logistic regression analyses was performed to evaluate their risk with GO incidence. Cluster analysis and principal component analysis (PCA) were performed to determine the effects of the extracted differentially methylated sites. RESULTS One hundred and forty-eight differentially methylated sites were identified, including CD14 (fold change = 4.31, p = 0.005), IL17RE (fold change = 2.128, p = 0.005), and DRD4 (fold change = 0.25, p = 0.004), and were supported by cluster and PCA analyses. Univariable logistic regression analyses showed that the methylation patterns at 12 loci were associated with GO incidence. The relative risk per 1% decrease in methylation at ZCCHC6 and GLI3 was 0.15 (95% CI 0.03-0.91; p = 0.039) and 0.65 (95% CI 0.42-0.98; p = 0.042), respectively. Pearson correlation analyses demonstrated that methylation levels at IL17RE were positively associated with Clinical Activity Score (CAS) (r = 0.967, p < 0.05). CONCLUSIONS Our results demonstrate that differential methylation levels at analyzed sites (genes) may be risk markers of GO. DNA methylation analysis could provide new insights into understanding the disease and provide new treatment strategies for GO in Chinese patients.
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Affiliation(s)
- Z Xin
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
| | - L Hua
- Department of Mathematics, School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - T-T Shi
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - X Tuo
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - F-Y Yang
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Y Li
- Physical Examination Department, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - X Cao
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - J-K Yang
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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Silva MBD, Melo ARDS, Costa LDA, Barroso H, Oliveira NFPD. Global and gene-specific DNA methylation and hydroxymethylation in human skin exposed and not exposed to sun radiation. An Bras Dermatol 2018; 92:793-800. [PMID: 29364434 PMCID: PMC5786392 DOI: 10.1590/abd1806-4841.20175875] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 08/07/2016] [Indexed: 12/19/2022] Open
Abstract
Background epigenomes can be influenced by environmental factors leading to the
development of diseases. Objective To investigate the influence of sun exposure on global DNA methylation and
hydroxymethylation status and at specific sites of the miR-9-1, miR-9-3 and
MTHFR genes in skin samples of subjects with no history of skin
diseases. Methods Skin samples were obtained by punch on sun-exposed and sun-protected arm
areas from 24 corpses of 16-89 years of age. Genomic DNA was extracted from
skin samples that were ranked according to Fitzpatrick's criteria as light,
moderate, and dark brown. Global DNA methylation and hydroxymethylation and
DNA methylation analyses at specific sites were performed using ELISA and
MSP, respectively. Results No significant differences in global DNA methylation and hydroxymethylation
levels were found among the skin areas, skin types, or age. However,
gender-related differences were detected, where women showed higher
methylation levels. Global DNA methylation levels were higher than
hydroxymethylation levels, and the levels of these DNA modifications
correlated in skin tissue. For specific sites, no differences among the
areas were detected. Additional analyses showed no differences in the
methylation status when age, gender, and skin type were considered; however,
the methylation status of the miR-9-1 gene seems to be gender related. Study limitations there was no separation of dermis and epidermis and low sample size. Conclusion sun exposure does not induce changes in the DNA methylation and
hydroxymethylation status or in miR-9-1, miR-9-3 and MTHFR genes for the
studied skin types.
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Affiliation(s)
- Mikaelly Batista da Silva
- Center for Exact Sciences and Nature, Post-graduate Program in Cellular and Molecular Biology, Universidade Federal da Paraíba (UFPB) -Paraíba, (PB), Brazil
| | - Alanne Rayssa da Silva Melo
- Center for Exact Sciences and Nature, Post-graduate Program in Cellular and Molecular Biology, Universidade Federal da Paraíba (UFPB) -Paraíba, (PB), Brazil
| | - Ludimila de Araújo Costa
- Center for Exact Sciences and Nature, Post-graduate Program in Cellular and Molecular Biology, Universidade Federal da Paraíba (UFPB) -Paraíba, (PB), Brazil
| | - Haline Barroso
- Center for Exact Sciences and Nature, Post-graduate Program in Cellular and Molecular Biology, Universidade Federal da Paraíba (UFPB) -Paraíba, (PB), Brazil
| | - Naila Francis Paulo de Oliveira
- Center for Exact Sciences and Nature, Post-graduate Program in Cellular and Molecular Biology, Universidade Federal da Paraíba (UFPB) -Paraíba, (PB), Brazil
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Morita E, Watanabe M, Inoue N, Hashimoto H, Haga E, Hidaka Y, Iwatani Y. Methylation levels of the TNFA gene are different between Graves’ and Hashimoto’s diseases and influenced by the TNFA polymorphism. Autoimmunity 2018. [DOI: 10.1080/08916934.2018.1448078] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Emi Morita
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Mikio Watanabe
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Naoya Inoue
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Laboratory for Clinical Investigation, Osaka University Hospital, Suita, Osaka, Japan
| | - Hidemi Hashimoto
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Emi Haga
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yoh Hidaka
- Laboratory for Clinical Investigation, Osaka University Hospital, Suita, Osaka, Japan
| | - Yoshinori Iwatani
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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Guo Q, Wu D, Yu H, Bao J, Peng S, Shan Z, Guan H, Teng W. Alterations of Global DNA Methylation and DNA Methyltransferase Expression in T and B Lymphocytes from Patients with Newly Diagnosed Autoimmune Thyroid Diseases After Treatment: A Follow-Up Study. Thyroid 2018; 28:377-385. [PMID: 29336230 DOI: 10.1089/thy.2017.0301] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Dysregulated DNA methylation in lymphocytes has been linked to autoimmune disorders. The aims of this study were to identify global DNA methylation patterns in patients with autoimmune thyroid diseases and to observe methylation changes after treatment for these conditions. METHODS A cross-sectional study was conducted, including the following patients: 51 with newly diagnosed Graves' disease (GD), 28 with autoimmune hypothyroidism (AIT), 29 with positive thyroid autoantibodies, and 39 matched healthy volunteers. Forty GD patients treated with radioiodine or antithyroid drugs and 28 AIT patients treated with L-thyroxine were followed for three months. Serum free triiodothyronine, free thyroxine, thyrotropin, thyroid peroxidase antibodies, thyroglobulin antibodies, and thyrotropin receptor antibodies were assayed using electrochemiluminescent immunoassays. CD3+ T and CD19+ B cells were separated by flow cytometry for total DNA and RNA extraction. Global DNA methylation levels were determined by absorptiometry using a methylation quantification kit. DNA methyltransferase (DNMT) expression levels were detected by real-time polymerase chain reaction. RESULTS Hypomethylation and down-regulated DNMT1 expression in T and B lymphocytes were observed in the newly diagnosed GD patients. Neither the AIT patients nor the positive thyroid autoantibodies patients exhibited differences in their global DNA methylation status or DNMT mRNA levels compared with healthy controls. Antithyroid drugs restored global methylation and DNMT1 expression in both T and B lymphocytes, whereas radioiodine therapy affected only T cells. L-thyroxine replacement did not alter the methylation or DNMT expression levels in lymphocytes. The global methylation levels of B cells were negatively correlated with the serum thyroid peroxidase antibodies in patients with autoimmune thyroid diseases. CONCLUSIONS Hyperthyroid patients with newly diagnosed GD had global hypomethylation and lower DNMT1 expression in T and B lymphocytes. The results provide the first demonstration that antithyroid drugs or radioiodine treatment restore global DNA methylation and DNMT1 expression with concurrent relief of hyperthyroidism.
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Affiliation(s)
- Qingling Guo
- 1 Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University , Shenyang, Liaoning, P.R. China
| | - Dan Wu
- 1 Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University , Shenyang, Liaoning, P.R. China
- 2 Department of Endocrinology and Metabolism, The Third Affiliated Hospital of Shenyang Medical College (Shenyang 242 Hospital) , Shenyang, P.R. China
| | - Huixin Yu
- 3 Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine , Wuxi, P.R. China
| | - Jiandong Bao
- 3 Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine , Wuxi, P.R. China
| | - Shiqiao Peng
- 1 Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University , Shenyang, Liaoning, P.R. China
| | - Zhongyan Shan
- 1 Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University , Shenyang, Liaoning, P.R. China
| | - Haixia Guan
- 1 Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University , Shenyang, Liaoning, P.R. China
| | - Weiping Teng
- 1 Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University , Shenyang, Liaoning, P.R. China
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The thymidylate synthase enhancer region (TSER) polymorphism increases the risk of thymic lymphoid hyperplasia in patients with Myasthenia Gravis. Gene 2018; 642:376-380. [PMID: 29162511 DOI: 10.1016/j.gene.2017.11.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 11/17/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Myasthenia Gravis (MG) is caused, in approximately 80% of the patients, by autoantibodies against the nicotinic acetylcholine receptor (AChR). The disease is often associated with pathological changes of the thymus: thymic epithelial tumours are present in about 10-20% of the patients, while up to 80% of the patients with early disease onset have thymic hyperplasia. Folate metabolism is required for the production of DNA precursors and for proper DNA methylation reactions, and impaired folate metabolism has been often associated with cellular growth and cancer. METHODS We investigated if major polymorphisms of folate-related genes, namely MTHFR c.677C>T, MTR c.2756A>G, MTRR c.66A>G and TYMS TSER (a 28-bp tandem repeat in the 5' promoter enhancer region of TYMS) increase the risk of pathological changes of the thymus in AChR+ MG patients. A total of 526 AChR+ MG patients, including 132 patients with normal (involuted) thymus, 146 patients with thymic hyperplasia, and 248 patients with a thymoma were included in the study. Allele and genotype comparisons were performed among the three study groups, after correcting for multiple testing. RESULTS The frequency of the TYMS TSER 3R allele was significantly higher in MG patients with thymic hyperplasia (P=0.004), and the TYMS TSER 3R3R genotype was significantly associated with increased risk of thymic hyperplasia [OR 2.71 (95% CI: 1.34-5.47)]. CONCLUSIONS The 3R allele in the thymidylate synthase promoter enhancer region results in increased protein production, required for the synthesis of DNA precursors. The present study suggests that the TYMS TSER 3R allele increases the risk of thymic lymphoid hyperplasia in AChR+ MG patients.
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Guo Q, Wu D, Fan C, Peng S, Guan H, Shan Z, Teng W. Iodine excess did not affect the global DNA methylation status and DNA methyltransferase expression in T and B lymphocytes from NOD.H-2 h4 and Kunming mice. Int Immunopharmacol 2017; 55:151-157. [PMID: 29253821 DOI: 10.1016/j.intimp.2017.12.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 12/12/2022]
Abstract
Dysregulated DNA methylation in lymphocytes has been linked to various autoimmune disorders. Excessive iodine intake leads to lymphocyte dysfunction and contributes to autoimmune thyroiditis (AIT) flares in humans and animals. However, whether excessive iodine modifies the DNA methylation status in lymphocytes is unknown. Twenty NOD.H-2h4 mice and 20 Kunming mice were randomly divided into high iodine and control groups. We scored lymphatic infiltration in the thyroid by hematoxylin and eosin (H&E) staining and assayed serum thyroglobulin antibody (TgAb) levels by an indirect enzyme-linked immunosorbent assay. CD3+ T cells and CD19+ B cells were separated by flow cytometry. Global DNA methylation levels were examined by absorptiometry. Methylation of long interspersed nucleotide element-1 (LINE-1) repeats was detected with bisulfite sequencing PCR. Expression of DNA methyltransferase (DNMT) 1, DNMT3a and DNMT3b mRNA and protein were determined by real-time PCR and Western blot, respectively. We observed evident thyroiditis in the high‑iodine-treated NOD.H-2h4 mice, while mice in the other three groups did not develop thyroiditis. No differences were found in the global methylation levels and methylation status of LINE-1 repeats in T and B lymphocytes from high‑iodine-treated NOD.H-2h4 mice and Kunming mice compared with those from normal‑iodine-supplemented controls. We did not find obvious changes in DNMT mRNA and protein expression levels in T and B lymphocytes among the studied groups. In conclusion, we showed for the first time that excess iodine did not affect the global methylation status or DNMT expression in T and B lymphocytes in NOD.H-2h4 and Kunming mice.
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Affiliation(s)
- Qingling Guo
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, China
| | - Dan Wu
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, China; Department of Endocrinology and Metabolism, The Third Affiliated Hospital of Shenyang Medical College (Shenyang 242 Hospital), Shenyang, China
| | - Chenling Fan
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, China
| | - Shiqiao Peng
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, China
| | - Haixia Guan
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, China.
| | - Zhongyan Shan
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, China
| | - Weiping Teng
- Department of Endocrinology and Metabolism, The Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, China
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Naumova OY, Rychkov SY, Kuznetzova TV, Odintsova VV, Kornilov SA, Grigorenko EL. DNA methylation alterations in the genome of a toddler with cri-du-chat syndrome. Clin Case Rep 2017; 6:14-17. [PMID: 29375829 PMCID: PMC5771924 DOI: 10.1002/ccr3.1274] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 09/14/2017] [Accepted: 10/21/2017] [Indexed: 12/31/2022] Open
Abstract
This manuscript reports on genomewide epigenetic alterations in cri-du-chat syndrome related to a partial aneusomy of chromosome 5. A systematic analysis of these alterations will open up new possibilities for the prognostic evaluation of CDCS patients and the development of new therapeutic interventions for reducing the severity of the disease.
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Affiliation(s)
- Oxana Y Naumova
- Texas Institute for Measurement, Evaluation, and Statistics University of Houston Houston Texas.,Laboratory of Human Genetics Vavilov Institute of General Genetics RAS Moscow Russian Federation
| | - Sergey Y Rychkov
- Laboratory of Human Genetics Vavilov Institute of General Genetics RAS Moscow Russian Federation
| | - Tatyana V Kuznetzova
- D.O. Ott's Research Institute of Obstetrics, Gynecology and Reproductology Saint Petersburg Russian Federation
| | - Veronika V Odintsova
- Department of Psychology Saint-Petersburg State University Saint Petersburg Russian Federation
| | - Sergey A Kornilov
- Texas Institute for Measurement, Evaluation, and Statistics University of Houston Houston Texas.,Department of Psychology Saint-Petersburg State University Saint Petersburg Russian Federation
| | - Elena L Grigorenko
- Texas Institute for Measurement, Evaluation, and Statistics University of Houston Houston Texas.,Department of Psychology Saint-Petersburg State University Saint Petersburg Russian Federation
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González-Mercado MG, Rivas F, Gallegos-Arreola MP, Morán-Moguel MC, Salazar-Páramo M, González-López L, Gámez-Nava JI, Muñoz-Valle JF, Medina-Coss Y León R, González-Mercado A, Aceves MA, Dávalos NO, Macías-Chumacera A, Dávalos IP. MTRR A66G, RFC1 G80A, and MTHFR C677T and A1298C Polymorphisms and Disease Activity in Mexicans with Rheumatoid Arthritis Treated with Methotrexate. Genet Test Mol Biomarkers 2017; 21:698-704. [PMID: 28994615 PMCID: PMC5695735 DOI: 10.1089/gtmb.2017.0124] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Aim: To investigate the relationships of polymorphisms in genes whose protein products are related in the metabolic pathway of folic acid, particularly MTRR A66G, RFC1 G80A, and MTHFR C677T and A1298C, and disease activity in Mexican patients with rheumatoid arthritis (RA) treated with methotrexate (MTX). Materials and Methods: Sixty-eight patients with RA were included in the study who were being treated with MTX, either with or without other drugs. In addition to general data, disease activity was measured by the disease activity score 28 (DAS28). Single nucleotide polymorphisms (SNPs) genotyping was performed by allelic discrimination using real-time polymerase chain reaction. Results: Differences in genotype (homozygotic or heterozygotic for each allele), allele distributions, and phenotype were not statistically different between the RA group and control populations. We did not find any association between the studied polymorphisms and disease activity nor with the intragroup variables (e.g., clinical activity, body mass index, and single- or combined-drug treatment) or between genetic markers; we also did not find any association within the RA group or between the RA group and control populations. Conclusion: Additional studies of more polymorphisms related to this or other metabolic pathways are required to determine the influence of genetics on disease activity in RA.
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Affiliation(s)
- Mirna Gisel González-Mercado
- 1 Divisiones de Genética y Medicina Molecular, Centro de Investigación Biomédica de Occidente , IMSS, Guadalajara, México.,2 División de Biotecnología y Salud, Tecnológico de Monterrey , Guadalajara, México.,3 Departamento de Biología Molecular y Genómica, DGH, CUCS, Universidad de Guadalajara , Guadalajara, México
| | - Fernando Rivas
- 4 Hospital General de Occidente , Secretaría de Salud Jalisco, Zapopan, México
| | - M Patricia Gallegos-Arreola
- 1 Divisiones de Genética y Medicina Molecular, Centro de Investigación Biomédica de Occidente , IMSS, Guadalajara, México
| | - M Cristina Morán-Moguel
- 1 Divisiones de Genética y Medicina Molecular, Centro de Investigación Biomédica de Occidente , IMSS, Guadalajara, México.,3 Departamento de Biología Molecular y Genómica, DGH, CUCS, Universidad de Guadalajara , Guadalajara, México
| | - Mario Salazar-Páramo
- 5 División de Investigación , UMAE, HE, CMNO y HGR 110, IMSS, Guadalajara, México.,6 Departamento de Fisiología, CUCS, Universidad de Guadalajara , Guadalajara, México
| | - Laura González-López
- 5 División de Investigación , UMAE, HE, CMNO y HGR 110, IMSS, Guadalajara, México.,6 Departamento de Fisiología, CUCS, Universidad de Guadalajara , Guadalajara, México
| | - J Iván Gámez-Nava
- 5 División de Investigación , UMAE, HE, CMNO y HGR 110, IMSS, Guadalajara, México.,6 Departamento de Fisiología, CUCS, Universidad de Guadalajara , Guadalajara, México
| | - J Francisco Muñoz-Valle
- 3 Departamento de Biología Molecular y Genómica, DGH, CUCS, Universidad de Guadalajara , Guadalajara, México
| | - Ricardo Medina-Coss Y León
- 1 Divisiones de Genética y Medicina Molecular, Centro de Investigación Biomédica de Occidente , IMSS, Guadalajara, México
| | - Anahí González-Mercado
- 1 Divisiones de Genética y Medicina Molecular, Centro de Investigación Biomédica de Occidente , IMSS, Guadalajara, México.,3 Departamento de Biología Molecular y Genómica, DGH, CUCS, Universidad de Guadalajara , Guadalajara, México
| | - Mario A Aceves
- 5 División de Investigación , UMAE, HE, CMNO y HGR 110, IMSS, Guadalajara, México.,6 Departamento de Fisiología, CUCS, Universidad de Guadalajara , Guadalajara, México
| | - Nory O Dávalos
- 3 Departamento de Biología Molecular y Genómica, DGH, CUCS, Universidad de Guadalajara , Guadalajara, México
| | | | - Ingrid P Dávalos
- 1 Divisiones de Genética y Medicina Molecular, Centro de Investigación Biomédica de Occidente , IMSS, Guadalajara, México.,3 Departamento de Biología Molecular y Genómica, DGH, CUCS, Universidad de Guadalajara , Guadalajara, México
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Li JJ, Zheng PCJR, Wang YZ. The correlations between DNA methylation and polymorphisms in the promoter region of the human telomerase reverse transcriptase (hTERT) gene with postoperative recurrence in patients with thyroid carcinoma (TC). World J Surg Oncol 2017; 15:114. [PMID: 28587656 PMCID: PMC5461729 DOI: 10.1186/s12957-017-1170-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 05/16/2017] [Indexed: 12/28/2022] Open
Abstract
Background This study aims at exploring the correlations between DNA methylation and polymorphisms in the promoter region of the human telomerase reverse transcriptase (hTERT) gene and postoperative recurrence in patients with thyroid carcinoma (TC). Methods A total of 312 patients diagnosed with TC were chosen for the study and categorized into recurrence (n = 75) and non-recurrence (n = 237) groups. The hTERT rs2736100 and rs2736098 polymorphisms were detected by performing polymerase chain reaction-restriction fragment length polymorphism. DNA methylation in the promoter region of hTERT gene was evaluated by pyrosequencing. A telephonic and/or outpatient follow-up was conducted for all patients. The correlations of DNA methylation and polymorphisms in the promoter region of hTERT with postoperative recurrence of TC patients underwent analysis. Results The patient in the recurrence group showed evidently different pathological types and tumor stages in comparison to the non-recurrence group. The GG genotype of hTERT rs2736100 might increase the recurrence risk of TC patients. No correlations between hTERT rs2736098 polymorphisms and recurrence risk were observed. Compared to the TT + TG genotype frequency, the rs2736100 GG genotype frequency increased in patients without multicentricity, patients with extrathyroidal invasion, patients with lymph node metastasis, patients with undifferentiated carcinoma, and patients in the III + IV stage. The recurrence group showed significantly higher DNA methylation level compared to the non-recurrence group. The DNA methylation level was closely associated to tumor stage and lymph node metastasis of TC patients in the recurrence group. Conclusions The DNA methylation and rs2736100 polymorphisms in the promoter region of hTERT gene might be in correlation to postoperative recurrence of TC patients.
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Affiliation(s)
- Jian-Jun Li
- Thyroid Surgery, Ningbo No.2 Hospital, No. 41, Xibei Street, Haishu District, Ningbo, 315010, Zhejiang, People's Republic of China.
| | - Ping Chen Jue-Ru Zheng
- Thyroid Surgery, Ningbo No.2 Hospital, No. 41, Xibei Street, Haishu District, Ningbo, 315010, Zhejiang, People's Republic of China
| | - Yao-Zong Wang
- Thyroid Surgery, Ningbo No.2 Hospital, No. 41, Xibei Street, Haishu District, Ningbo, 315010, Zhejiang, People's Republic of China
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Wang B, Shao X, Song R, Xu D, Zhang JA. The Emerging Role of Epigenetics in Autoimmune Thyroid Diseases. Front Immunol 2017; 8:396. [PMID: 28439272 PMCID: PMC5383710 DOI: 10.3389/fimmu.2017.00396] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 03/21/2017] [Indexed: 12/15/2022] Open
Abstract
Autoimmune thyroid diseases (AITD) are a group of both B cell- and T cell-mediated organ-specific autoimmune diseases. Graves’ disease and Hashimoto thyroiditis are the two main clinical presentations of AITD. Both genetic and environmental factors have important roles in the development of AITD. Epigenetics have been considered to exert key roles in integrating those genetic and environmental factors, and epigenetic modifications caused by environmental factors may drive genetically susceptibility individuals to develop AITD. Recent studies on the epigenetics of AITD have provided some novel insights into the pathogenesis of AITD. The aim of this review is to provide an overview of recent advances in the epigenetic mechanisms of AITD, such as DNA methylation, histone modifications, and non-coding RNAs. This review highlights the key roles of epigenetics in the pathogenesis of AITD and potential clinical utility. However, the epigenetic roles in AITD are still not fully elucidated, and more researches are needed to provide further deeper insights into the roles of epigenetics in AITD and to uncover new therapeutic targets. Although there are many studies assessing the epigenetic modifications in AITD patients, the clinical utility of epigenetics in AITD remains poorly defined. More studies are needed to identify the underlying epigenetic modifications that can contribute to accurate diagnosis of AITD, adequate choice of treatment approach, and precise prediction of treatment outcomes.
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Affiliation(s)
- Bin Wang
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China.,Department of Rheumatology and Immunology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Xiaoqing Shao
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China.,Department of Rheumatology and Immunology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Ronghua Song
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China.,Department of Rheumatology and Immunology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Donghua Xu
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Jin-An Zhang
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China.,Department of Rheumatology and Immunology, Jinshan Hospital of Fudan University, Shanghai, China
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Yi Q, Xu H, Yang K, Wang Y, Tan B, Tian J, Zhu J. Islet-1 induces the differentiation of mesenchymal stem cells into cardiomyocyte-like cells through the regulation of Gcn5 and DNMT-1. Mol Med Rep 2017; 15:2511-2520. [PMID: 28447752 PMCID: PMC5428324 DOI: 10.3892/mmr.2017.6343] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 02/09/2017] [Indexed: 12/18/2022] Open
Abstract
Previous studies from this group demonstrated that insulin gene enhancer binding protein ISL-1 (Islet-1) specifically induces the differentiation of mesenchymal stem cells (MSCs) into cardiomyocyte-like cells through histone acetylation. However, the underlying mechanisms remain unclear. In the present study, the role of the histone acetylation and DNA methylation on the regulatory mechanism of the Islet-1 was further investigated by methylation-specific polymerase chain reaction (PCR), chromatin immunoprecipitation quantitative PCR and western blot analysis. The results demonstrated that Islet-1 upregulated expression of general control of amino acid biosynthesis protein 5 (Gcn5) and enhanced the binding of Gcn5 to the promoters of GATA binding protein 4 (GATA4) and NK2 homeobox 5 (Nkx2.5). In addition, Islet-1 downregulated DNA methyltransferase (DNMT)-1 expression and reduced its binding to the GATA4 promoter. In contrast, the amount of DNMT-1 binding on Nkx2.5 did not match the expression trend. Therefore, it was concluded that Islet-1 may influence the histone acetylation and DNA methylation of GATA4 promoter region via Gcn5 and DNMT-1 during the MSC differentiation into cardiomyocyte-like cells, thus prompting the expression of GATA4. The Nkx2.5 was likely only affected by histone acetylation instead of DNA methylation. The present study demonstrated that Islet-1 induces the differentiation of mesenchymal stem cells into cardiomyocyte-like cells through a specific interaction between histone acetylation and DNA methylation on regulating GATA4.
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Affiliation(s)
- Qin Yi
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Hao Xu
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Ke Yang
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Yue Wang
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Bin Tan
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Jie Tian
- Cardiovascular Department (Internal Medicine), Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Jing Zhu
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
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Abstract
Increasing evidence suggests that epigenetic modifications, including changes in DNA methylation, covalent modifications of histone tails, and gene silencing mediated by non-coding RNA molecules, play a substantial role in the pathogenesis of autoimmune disorders and might be seen as the result of environmental insults that trigger these conditions. Studies in cells and tissues of patients with autoimmune thyroid diseases (AITD), and particularly in Graves' disease (GD) and Hashimoto's thyroiditis (HT), are increasingly revealing altered epigenetic marks and resultant deregulation of gene expression levels, but the available data are still limited to be translated into the clinical settings. Particularly, genome-wide methylation and histone tail modification screenings are limited to a few studies in GD patients, and the diagnostic values of the observed epigenetic changes or their potential prognostic utility are still unclear. Similarly, data concerning microRNA expression in AITD patients are largely descriptive and not yet translated into the clinics. In addition, studies relating certain environmental exposures to specific epigenetic changes in AITD and studies evaluating the crosstalk between different epigenetic mechanisms are largely missing. In summary, despite that there is a clear evidence of epigenetic impairment in AITD, further research is required for a better understanding of the epigenetic networks involved in disease pathogenesis, thereby opening the way for potential diagnostic and prognostic tools, as well as for epigenetic interventions in the patients.
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Affiliation(s)
- Fabio Coppedè
- Department of Translational Research and New Technologies in Medicine and Surgery, Section of Medical Genetics, University of Pisa, Pisa, Italy
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Supic G, Kozomara R, Zeljic K, Jovic N, Magic Z. Prognostic value of the DNMTs mRNA expression and genetic polymorphisms on the clinical outcome in oral cancer patients. Clin Oral Investig 2017; 21:173-182. [PMID: 26966018 DOI: 10.1007/s00784-016-1772-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 02/29/2016] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Although the importance of the epigenetic changes in tumors, including oral squamous cell carcinomas (OSCCs), is now becoming apparent, the mechanisms that trigger or cause aberrant DNA methylation in cancer are still unrevealed. DNA methylation is regulated by a family of enzymes, DNA methyltransferases (DNMTs). DNMT gene expression analysis, as well as genetic polymorphisms, has not been previously evaluated in OSCC. MATERIALS AND METHODS In 65 OSCC patients, SYBR Green real-time PCR method was assessed for relative quantification of DNMT1, DNMT3A, and DNMT3B mRNAs, normalized to TATA-binding protein (TBP) mRNA. The expression levels of all three genes were dichotomized as high or low, with a twofold change of normalized mRNA expression used as the cutoff value. Polymorphisms in DNMT1 (rs2228612) and DNMT3B (rs406193) were analyzed in 99 OSCCs by TaqMan SNPs genotyping assays. RESULTS DNMT1, DNMT3A, and DNMT3B were overexpressed in 36.9, 26, and 23 % of the OSCC patients, respectively. DNMT1 overexpression was significantly associated with the overall survival, p = 0.029, and relapse-free survival of OSCC patients, p = 0.003. Patients with DNMT1 overexpression, as an independent prognostic factor, had a 2.385 times higher risk to relapse than those with lower expression. The DNMT1 A201G gene polymorphism was associated with a reduced overall survival in OSCC patients, p = 0.036. CONCLUSIONS Our results suggest that DNMT1 could play an important role in modulating OSCC patient survival. CLINICAL RELEVANCE DNMT gene expression could be a potential prognostic marker that might lead to an improvement in diagnosis, prognosis, and prospective use of epigenetic-targeted therapy of OSCC.
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Affiliation(s)
- Gordana Supic
- Faculty of Medicine, Military Medical Academy, University of Defense, Belgrade, Serbia.
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, Belgrade, 11002, Serbia.
| | - Ruzica Kozomara
- Faculty of Medicine, Military Medical Academy, University of Defense, Belgrade, Serbia
- Clinic for Maxillofacial Surgery, Military Medical Academy, Belgrade, Serbia
| | - Katarina Zeljic
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, Belgrade, 11002, Serbia
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - Nebojsa Jovic
- Faculty of Medicine, Military Medical Academy, University of Defense, Belgrade, Serbia
- Clinic for Maxillofacial Surgery, Military Medical Academy, Belgrade, Serbia
| | - Zvonko Magic
- Faculty of Medicine, Military Medical Academy, University of Defense, Belgrade, Serbia
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, Belgrade, 11002, Serbia
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46
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Cai TT, Zhang J, Wang X, Song RH, Qin Q, Muhali FS, Zhou JZ, Xu J, Zhang JA. Gene-gene and gene-sex epistatic interactions of DNMT1, DNMT3A and DNMT3B in autoimmune thyroid disease. Endocr J 2016; 63:643-53. [PMID: 27237591 DOI: 10.1507/endocrj.ej15-0596] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to investigate the associations of DNA methyltransferases (DNMTs) polymorphisms with susceptibility to autoimmune thyroid diseases (AITDs) and to test gene-gene/gene-sex epistasis interactions. Eight single-nucleotide polymorphisms (SNPs) in DNMT1, DNMT3A and DNMT3B were selected and genotyped by multiplex polymerase chain reaction combined with ligase detection reaction method (PCR-LDR). A total of 685 Graves' disease (GD) patients, 353 Hashimoto's thyroiditis (HT) patients and 909 healthy controls were included in the final analysis. Epistasis was tested by additive model, multiplicative model and general multifactor dimensionality reduction (general MDR). Rs2424913 (DNMT3B) and rs2228611 (DNMT1) were associated with susceptibility to AITD and GD in the dominant and overdominant model, respectively (rs2424913: P=0.009 for AITD, P=0.0041 for GD; rs2228611: P=0.035 for AITD, P=0.043 for GD). Multiplicative and multiple high dimensional gene-gene or gene-sex interactions were also observed in this study. We have found evidence for a potential role of rs2424913 (DNMT3B) and rs2228611 (DNMT1) in AITD susceptibility and identified novel gene-gene/gene-sex interactions in AITD. Our study may highlight sex and genes of DNMTs family as contributors to the pathogenesis of AITD.
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Affiliation(s)
- Tian-Tian Cai
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai 201508, China
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Stueve TR, Marconett CN, Zhou B, Borok Z, Laird-Offringa IA. The importance of detailed epigenomic profiling of different cell types within organs. Epigenomics 2016; 8:817-29. [PMID: 27305639 PMCID: PMC5066118 DOI: 10.2217/epi-2016-0005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The human body consists of hundreds of kinds of cells specified from a single genome overlaid with cell type-specific epigenetic information. Comprehensively profiling the body's distinct epigenetic landscapes will allow researchers to verify cell types used in regenerative medicine and to determine the epigenetic effects of disease, environmental exposures and genetic variation. Key marks/factors that should be investigated include regions of nucleosome-free DNA accessible to regulatory factors, histone marks defining active enhancers and promoters, DNA methylation levels, regulatory RNAs, and factors controlling the three-dimensional conformation of the genome. Here we use the lung to illustrate the importance of investigating an organ's purified cell epigenomes, and outline the challenges and promise of realizing a comprehensive catalog of primary cell epigenomes.
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Affiliation(s)
- Theresa Ryan Stueve
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.,Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.,Department of Biochemistry & Molecular Biology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Crystal N Marconett
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.,Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Beiyun Zhou
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.,Division of Pulmonary & Critical Care Medicine, Department of Medicine, Will Rogers Institute Pulmonary Research Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Zea Borok
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.,Department of Biochemistry & Molecular Biology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.,Division of Pulmonary & Critical Care Medicine, Department of Medicine, Will Rogers Institute Pulmonary Research Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Ite A Laird-Offringa
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.,Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.,Department of Biochemistry & Molecular Biology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
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Wang L, Shangguan S, Chang S, Yu X, Wang Z, Lu X, Wu L, Zhang T. Determining the association between methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms and genomic DNA methylation level: A meta-analysis. ACTA ACUST UNITED AC 2016; 106:667-74. [PMID: 27173682 DOI: 10.1002/bdra.23511] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND The methylenetetrahydrofolate reductase (MTHFR) polymorphism is a risk factor for neural tube defects. C677T and A1298C MTHFR polymorphisms produce an enzyme with reduced folate-related one carbon metabolism, and this has been associated with aberrant methylation modifications in DNA and protein. METHODS A meta-analysis was conducted to assess the association between MTHFR C677T/A1298C genotypes and global genomic methylation. RESULTS Eleven studies met the inclusion criteria. Of these, 10 were performed on C677T MTHFR genotypes and 6 were performed on A1298C MTHFR genotypes. Our results did not indicate any correlation between global methylation and MTHFR A1298C, C677T polymorphisms. CONCLUSION The results of our study provide evidence to assess the global methylation modification alterations of MTHFR polymorphisms among individuals. However, our data did not found any conceivable proof supporting the hypothesis that common variant of MTHFR A1298C, C677T contributes to methylation modification. Birth Defects Research (Part A) 106:667-674, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Li Wang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Shaofang Shangguan
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Shaoyan Chang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Xin Yu
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Zhen Wang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Xiaolin Lu
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Lihua Wu
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Ting Zhang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
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Song RH, Qin Q, Wang X, Yan N, Meng S, Shi XH, He ST, Zhang JA. Differential cytokine expression detected by protein microarray screening in peripheral blood of patients with refractory Graves' disease. Clin Endocrinol (Oxf) 2016; 84:402-7. [PMID: 25817259 DOI: 10.1111/cen.12778] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 01/14/2015] [Accepted: 03/23/2015] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The prognosis of Graves' disease (GD) varies among patients. However, the immune pathogenesis of refractory GD is still unknown. The aim of this study was to explore the cytokine expression profile associated with refractory GD. METHODS Preliminary cytokine protein microarray screening was performed to detect differentially expressed cytokines in the plasma of four patients with refractory GD and four patients with stable GD. Some differentially expressed cytokines were then validated in plasma by enzyme-linked immunosorbent assay (ELISA) and in peripheral blood mononuclear cells (PBMCs) by quantitative real-time polymerase chain reaction (qRT-PCR) on another independent set of samples. RESULTS We found that 21 cytokines were differentially expressed between patients with intractable GD and those in remission, including 18 upregulated and 3 downregulated cytokines with a fold change >1·30 and <0·77, respectively. Intractability-related elevation of three cytokines (IL-4, IL-6 and IL-10) was validated by ELISA in plasma on another GD cohort with 30 patients in recurrence and 14 in remission (t-test, P = 0·035, 0·033 and 0·041, respectively). Furthermore, mRNA expression of IL-4, IL-6 and IL-10 in PBMCs, detected by qRT-PCR, was significantly elevated in patients with refractory GD compared with those in remission (P = 0·039, 0·047 and 0·042, respectively). CONCLUSION The severity of GD is associated with the aberrant expression and secretion of several cytokines that may serve as potential biomarkers and predictors for disease prognosis. Targeting these cytokines or their receptors may also lead to a novel therapeutic intervention for GD.
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Affiliation(s)
- Rong-hua Song
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Qiu Qin
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Xuan Wang
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Ni Yan
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Shuai Meng
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Xiao-hong Shi
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Shuang-tao He
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China
| | - Jin-an Zhang
- Department of Endocrinology, Jinshan Hospital of Fudan University, Shanghai, China
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50
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Kurdyukov S, Bullock M. DNA Methylation Analysis: Choosing the Right Method. BIOLOGY 2016; 5:biology5010003. [PMID: 26751487 PMCID: PMC4810160 DOI: 10.3390/biology5010003] [Citation(s) in RCA: 343] [Impact Index Per Article: 42.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 12/16/2015] [Accepted: 12/22/2015] [Indexed: 01/10/2023]
Abstract
In the burgeoning field of epigenetics, there are several methods available to determine the methylation status of DNA samples. However, choosing the method that is best suited to answering a particular biological question still proves to be a difficult task. This review aims to provide biologists, particularly those new to the field of epigenetics, with a simple algorithm to help guide them in the selection of the most appropriate assay to meet their research needs. First of all, we have separated all methods into two categories: those that are used for: (1) the discovery of unknown epigenetic changes; and (2) the assessment of DNA methylation within particular regulatory regions/genes of interest. The techniques are then scrutinized and ranked according to their robustness, high throughput capabilities and cost. This review includes the majority of methods available to date, but with a particular focus on commercially available kits or other simple and straightforward solutions that have proven to be useful.
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Affiliation(s)
- Sergey Kurdyukov
- Genomics Core facility, Kolling Institute of Medical Research, University of Sydney, Sydney 2065, Australia.
| | - Martyn Bullock
- Cancer Genetics Laboratory, Kolling Institute of Medical Research, University of Sydney, Sydney 2065, Australia.
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