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DNA methylation immune response

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https://www.readbyqxmd.com/read/28935613/maternal-exposure-of-balb-c-mice-to-indoor-no2-and-allergic-asthma-syndrome-in-offspring-at-adulthood-with-evaluation-of-dna-methylation-associated-th2-polarization
#1
Huifeng Yue, Wei Yan, Xiaotong Ji, Rui Gao, Juan Ma, Ziyu Rao, Guangke Li, Nan Sang
BACKGROUND: Fetal stress has been proposed to be associated with diseases in both children and adults. Epidemiological studies suggest that maternal exposure to nitrogen dioxide (NO2) contributes to increased morbidity and mortality of offspring with allergic asthma later in life. OBJECTIVES: We aimed to test whether maternal NO2 exposure causes allergic asthma-related consequences in offspring absent any subsequent lung provocation and whether this exposure enhances the likelihood of developing allergic asthma or the intensity of developed allergic airway disease following postnatal allergic sensitization and challenge...
September 13, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28926431/epigenetic-regulation-of-dendritic-cell-development-and-function
#2
Yuanyuan Tian, Lijun Meng, Yi Zhang
The immune system is characterized by the generation of structurally and functionally heterogeneous immune cells that constitute complex innate and adaptive immunity. This heterogeneity of immune cells results from changes in the expression of genes without altering DNA sequence. To achieve this heterogeneity, immune cells orchestrate the expression and functional status of transcription factor (TF) networks, which can be broadly categorized into 3 classes: pioneer TFs that facilitate initial commitment and differentiation of hematopoietic cells, subset-specific TFs that promote the generation of selected cell lineages, and immune-signaling TFs that regulate specialized function in differentiated cells...
September 2017: Cancer Journal
https://www.readbyqxmd.com/read/28923166/major-transcriptional-changes-observed-in-the-fulani-an-ethnic-group-less-susceptible-to-malaria
#3
Jaclyn E Quin, Ioana Bujila, Mariama Chérif, Guillaume S Sanou, Ying Qu, Manijeh Vafa Homann, Anna Rolicka, Sodiomon B Sirima, Mary A O'Connell, Andreas Lennartsson, Marita Troye-Blomberg, Issa Nebie, Ann-Kristin Östlund Farrants
The Fulani ethnic group has relatively better protection from Plasmodium falciparum malaria, as reflected by fewer symptomatic cases of malaria, lower infection rates, and lower parasite densities compared to sympatric ethnic groups<strong>.</strong> However, the basis for this lower susceptibility to malaria by the Fulani is unknown. We have performed a pilot study to examine global transcription and DNA methylation patterns in specific immune cell populations in the Fulani to elucidate the mechanisms that confer the lower susceptibility to P...
September 19, 2017: ELife
https://www.readbyqxmd.com/read/28921466/roles-of-hdacs-in-the-responses-of-innate-immune-cells-and-as-targets-in-inflammatory-diseases
#4
Yiqun Hu, Bandar Ali Suliman
Histone deacetylases (HDACs) are an emerging class of molecules involved in the epigenetic regulation of innate immune responses through Toll-like receptor (TLR) and interferon (IFN) signaling pathways. HDACs are also key drivers of inflammatory diseases via epigenetic regulation through chromatin DNA and histone modification by methylation and acetylation, among other mechanisms, which control innate immune cell gene expression. Importantly, these epigenetic changes are reversible, and HDACs may also be targeted by small-molecule HDAC inhibitors, which have been used in clinical settings for cancer therapy...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28921464/posttranslational-modification-control-of-inflammatory-signaling
#5
Yibo Si, Yunlu Zhang, Zijuan Chen, Ruixue Zhou, Yihua Zhang, Doudou Hao, Dapeng Yan
Inflammation is usually the defensive reaction of the immune system to the invasion of pathogen and the exogenous objects. The activation of inflammation helps our body to eliminate pathogenic microbe, virus, and parasite harming our health, while under many circumstances inflammation is the direct cause of the pathological damage in tissues and dysfunction of organs. The posttranslational modification (PTM) of the inflammatory pathways, such as TLR pathways, RLR pathways, NLR pathway, intracellular DNA sensors, intracellular RNA sensors, and inflammasomes, is crucial in the regulation of these signaling trails...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28915632/decitabine-inhibits-t-cell-proliferation-via-a-novel-tet2-dependent-mechanism-and-exerts-potent-protective-effect-in-mouse-auto-and-allo-immunity-models
#6
Xue Wang, Jun Wang, Yong Yu, Tonghui Ma, Ping Chen, Bing Zhou, Ran Tao
Multiple sclerosis (MS) is an autoimmune disease characterized by the dysregulated immune response including innate and adaptive immune responses. Increasing evidence has proven the importance of epigenetic modification in the progression of MS. Recent studies revealed that low-dose decitabine (Dec, 5-Aza-2'-deoxycytidine), which incorporates into replicating DNA and inhibits DNA methylation, could prevent experimental autoimmune encephalomyelitis (EAE) development by increasing the number of regulatory T cells (Tregs)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28911167/in-utero-exposure-to-a-high-fat-diet-programs-hepatic-hypermethylation-and-gene-dysregulation-and-development-of-metabolic-syndrome-in-male-mice
#7
Yoshinori Seki, Masako Suzuki, Xingyi Guo, Alan Scott Glenn, Patricia M Vuguin, Ariana Fiallo, Quan Du, Yi-An Ko, Yiting Yu, Katalin Susztak, Deyou Zheng, John M Greally, Ellen B Katz, Maureen J Charron
Exposure to a high-fat (HF) diet in utero is associated with increased incidence of cardiovascular disease, diabetes, and metabolic syndrome later in life. However, the molecular basis of this enhanced susceptibility for metabolic disease is poorly understood. Gene expression microarray and genome-wide DNA methylation analyses of mouse liver revealed that exposure to a maternal HF milieu activated genes of immune response, inflammation, and hepatic dysfunction. DNA methylation analysis revealed 3360 differentially methylated loci, most of which (76%) were hypermethylated and distributed preferentially to hotspots on chromosomes 4 [atherosclerosis susceptibility quantitative trait loci (QTLs) 1] and 18 (insulin-dependent susceptibility QTLs 21)...
September 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28898397/genome-wide-dna-methylation-analysis-of-senescence-in-repetitively-infected-memory-ctls-dna-methylation-analysis-of-repetitively-infected-memory-ctls
#8
Jumpei Shosaku
The immune system including antigen-specific CD8 T cells, which are cytotoxic T lymphocytes (CTLs), can acquire the potential of more effective elimination of the pathogen for reinfection. Since memory CTLs could exert protective immunity after the next response, we aimed to elucidate the substantial change of repetitively infected memory CTLs. Currently, DNA methylation status in repetitively infected memory CTLs is still unknown. Therefore, we performed next generation sequencing (NGS) to evaluate methylation status and transcriptional regulation of naive, primary and secondary memory CD8 T cells on the basis of transcription start sites (TSS)...
September 12, 2017: Immunology
https://www.readbyqxmd.com/read/28887432/maternal-pregravid-obesity-remodels-the-dna-methylation-landscape-of-cord-blood-monocytes-disrupting-their-inflammatory-program
#9
Suhas Sureshchandra, Randall M Wilson, Maham Rais, Nicole E Marshall, Jonathan Q Purnell, Kent L Thornburg, Ilhem Messaoudi
Prepregnancy maternal obesity is associated with adverse outcomes for the offspring, including increased incidence of neonatal bacterial sepsis and necrotizing enterocolitis. We recently reported that umbilical cord blood (UCB) monocytes from babies born to obese mothers generate a reduced IL-6/TNF-α response to TLR 1/2 and 4 ligands compared to those collected from lean mothers. These observations suggest altered development of the offspring's immune system, which in turn results in dysregulated function...
September 8, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28884387/genome-wide-dna-methylation-patterns-in-coronary-heart-disease
#10
X Wang, A-H Liu, Z-W Jia, K Pu, K-Y Chen, H Guo
BACKGROUND: To better understand the molecular mechanisms of atherosclerosis, we conducted a comparative analysis of DNA methylation patterns in right coronary arteries in the area of advanced atherosclerotic plaques (CAP), great saphenous vein (GSV), and internal mammary artery (IMA) of patients affected by coronary heart disease. METHODS: DNA methylation data (accession number E‑GEOD-62867) were divided into three paired groups: CAP vs. IMA, CAP vs. GSV, and IMA vs...
September 7, 2017: Herz
https://www.readbyqxmd.com/read/28882368/the-epigenetic-promise-to-improve-prognosis-of-heart-failure-and-heart-transplantation
#11
REVIEW
Chiara Sabia, Antonietta Picascia, Vincenzo Grimaldi, Cristiano Amarelli, Ciro Maiello, Claudio Napoli
Heart transplantation is still the only possible life-saving treatment for end-stage heart failure, the critical epilogue of several cardiac diseases. Epigenetic mechanisms are being intensively investigated because they could contribute to establishing innovative diagnostic and predictive biomarkers, as well as ground-breaking therapies both for heart failure and heart transplantation rejection. DNA methylation and histone modifications can modulate the innate and adaptive immune response by acting on the expression of immune-related genes that, in turn, are crucial determinants of transplantation outcome...
August 15, 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28852164/genome-wide-dna-methylation-and-transcriptome-analyses-reveal-genes-involved-in-immune-responses-of-pig-peripheral-blood-mononuclear-cells-to-poly-i-c
#12
Haifei Wang, Jiying Wang, Chao Ning, Xianrui Zheng, Jinlian Fu, Aiguo Wang, Qin Zhang, Jian-Feng Liu
DNA methylation changes play essential roles in regulating the activities of genes involved in immune responses. Understanding of variable DNA methylation linked to immune responses may contribute to identifying biologically promising epigenetic markers for pathogenesis of diseases. Here, we generated genome-wide DNA methylation and transcriptomic profiles of six pairs of polyinosinic-polycytidylic acid-treated pig peripheral blood mononuclear cell (PBMC) samples and corresponding controls using methylated DNA immunoprecipitation sequencing and RNA sequencing...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28851441/parkinson-s-disease-is-associated-with-dna-methylation-levels-in-human-blood-and-saliva
#13
Yu-Hsuan Chuang, Kimberly C Paul, Jeff M Bronstein, Yvette Bordelon, Steve Horvath, Beate Ritz
BACKGROUND: Several articles suggest that DNA methylation levels in blood relate to Parkinson's disease (PD) but there is a need for a large-scale study that involves suitable population based controls. The purposes of the study were: (1) to study whether PD status is associated with DNA methylation levels in blood/saliva; (2) to study whether observed associations relate to blood cell types; and (3) to characterize genome-wide significant markers ("CpGs") and clusters of CpGs (co-methylation modules) in terms of biological pathways...
August 30, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28820654/locus-specific-dna-methylation-in-the-placenta-is-associated-with-levels-of-pro-inflammatory-proteins-in-cord-blood-and-they-are-both-independently-affected-by-maternal-smoking-during-pregnancy
#14
Sanne D van Otterdijk, Alexandra M Binder, Karin B Michels
We investigated the impact of maternal smoking during pregnancy on placental DNA methylation and how this may mediate the association between maternal smoking and pro-inflammatory proteins in cord blood. The study population consisted of 27 individuals exposed to maternal smoking throughout pregnancy, 32 individuals exposed during a proportion of the pregnancy, and 61 unexposed individuals. Methylation of 11 regions within 6 genes in placenta tissue was assessed by pyrosequencing. Levels of 7 pro-inflammatory proteins in cord blood were assessed by electrochemiluminescence...
August 18, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28815391/the-role-of-epigenetics-in-type-1-diabetes
#15
REVIEW
Samuel T Jerram, Mary N Dang, R David Leslie
PURPOSE OF REVIEW: Epigenetics is defined as mitotically heritable changes in gene expression that do not directly alter the DNA sequence. By implication, such epigenetic changes are non-genetically determined, although they can be affected by inherited genetic variation. Extensive evidence indicates that autoimmune diseases including type 1 diabetes are determined by the interaction of genetic and non-genetic factors. Much is known of the genetic causes of these diseases, but the non-genetic effects are less clear-cut...
August 16, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28771594/patients-experiencing-statin-induced-myalgia-exhibit-a-unique-program-of-skeletal-muscle-gene-expression-following-statin-re-challenge
#16
Marshall B Elam, Gipsy Majumdar, Khyobeni Mozhui, Ivan C Gerling, Santiago R Vera, Hannah Fish-Trotter, Robert W Williams, Richard D Childress, Rajendra Raghow
Statins, the 3-hydroxy-3-methyl-glutaryl (HMG)-CoA reductase inhibitors, are widely prescribed for treatment of hypercholesterolemia. Although statins are generally well tolerated, up to ten percent of statin-treated patients experience myalgia symptoms, defined as muscle pain without elevated creatinine phosphokinase (CPK) levels. Myalgia is the most frequent reason for discontinuation of statin therapy. The mechanisms underlying statin myalgia are not clearly understood. To elucidate changes in gene expression associated with statin myalgia, we compared profiles of gene expression in skeletal muscle biopsies from patients with statin myalgia who were undergoing statin re-challenge (cases) versus those of statin-tolerant controls...
2017: PloS One
https://www.readbyqxmd.com/read/28756583/phytopathogen-induced-changes-to-plant-methylomes
#17
REVIEW
Tarek Hewezi, Vince Pantalone, Morgan Bennett, C Neal Stewart, Tessa M Burch-Smith
DNA methylation is a dynamic and reversible type of epigenetic mark that contributes to cellular physiology by affecting transcription activity, transposon mobility and genome stability. When plants are infected with pathogens, plant DNA methylation patterns can change, indicating an epigenetic interplay between plant host and pathogen. In most cases methylation can change susceptibility. While DNA hypomethylation appears to be a common phenomenon during the susceptible interaction, the levels and patterns of hypomethylation in transposable elements and genic regions may mediate distinct responses against various plant pathogens...
July 29, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28754822/epigenetic-research-in-multiple-sclerosis-progress-challenges-and-opportunities
#18
Galina Zheleznyakova, Eliane Piket, Francesco Marabita, Majid Pahlevan Kakhki, Ewoud Ewing, Sabrina Ruhrmann, Maria Needhamsen, Maja Jagodic, Lara Kular
Multiple Sclerosis (MS) is a chronic inflammatory and demyelinating disease of the central nervous system. MS likely results from a complex interplay between predisposing causal gene variants (the strongest influence coming from HLA class II locus) and environmental risk factors such as smoking, infectious mononucleosis and lack of sun exposure/vitamin D. However, little is known about the mechanisms underlying MS development and progression. Moreover, the clinical heterogeneity and variable response to treatment represent additional challenges to a comprehensive understanding and efficient treatment of disease...
July 28, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28753533/role-of-traf3-in-neurological-and-cardiovascular-diseases-an-overview-of-recent-studies
#19
Natalia Cullell, Elena Muiño, Caty Carrera, Nuria Torres, Jerzy Krupinski, Israel Fernandez-Cadenas
Tumour necrosis factor receptor-associated factor 3 (TRAF3) is a member of the TRAF adaptor protein family, which exerts different effects on the cell depending on the receptor to which it binds and the cell type in which it is expressed. TRAF3 is a major regulator of the innate immune response. To perform its functions properly, TRAF3 is transcriptionally and epigenetically regulated. At the transcriptional level, TRAF3 expression has been associated with neurological and cardiovascular diseases including stroke, among other pathologies...
September 26, 2017: Biomolecular Concepts
https://www.readbyqxmd.com/read/28744851/post-translational-regulation-of-antiviral-innate-signaling
#20
REVIEW
Yilong Zhou, Chenxi He, Lin Wang, Baoxue Ge
The innate immune system initiates immune responses by pattern-recognition receptors (PRR). Virus-derived nucleic acids are sensed by the retinoic acid-inducible gene I (RIG-I)-like receptor (RLR) family and the toll-like receptor (TLR) family as well as the DNA sensor cyclic GMP-AMP (cGAMP) synthase (cGAS). These receptors activate IRF3/7 and NF-κB signaling pathways to induce the expression of type I interferons (IFNs) and other cytokines firing antiviral responses within the cell. However, to achieve a favorable outcome for the host, a balanced production of IFNs and activation of antiviral responses is required...
July 26, 2017: European Journal of Immunology
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