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https://www.readbyqxmd.com/read/29914851/integrative-methylome-and-transcriptome-analysis-to-dissect-key-biological-pathways-for-psoriasis-in-chinese-han-population
#1
Lili Tang, Yuyan Cheng, Caihong Zhu, Chao Yang, Lu Liu, Yuanjing Zhang, Leilei Wen, Xuejun Zhang, Fusheng Zhou, Sen Yang
BACKGROUND: Recent studies have revealed that DNA methylation (DNAm) could modulate gene expression in psoriasis (Ps). However, the relationship between whole-genome DNAm and gene expression in Ps has not been studied yet. OBJECTIVES: To better characterize the relationship between DNAm and gene expression, and to identify biological pathways triggered by changes in methylation involved in the pathogenesis of Ps. METHODS: Differentially methylated sites (DMSs) and differentially expressed genes (DEGs) were analysed by comparing 20 involved psoriatic (PP) skin, 20 uninvolved psoriatic (PN) skin and 20 normal (NN) skin biopsies...
June 9, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29891976/identifying-gene-targets-for-brain-related-traits-using-transcriptomic-and-methylomic-data-from-blood
#2
Ting Qi, Yang Wu, Jian Zeng, Futao Zhang, Angli Xue, Longda Jiang, Zhihong Zhu, Kathryn Kemper, Loic Yengo, Zhili Zheng, Riccardo E Marioni, Grant W Montgomery, Ian J Deary, Naomi R Wray, Peter M Visscher, Allan F McRae, Jian Yang
Understanding the difference in genetic regulation of gene expression between brain and blood is important for discovering genes for brain-related traits and disorders. Here, we estimate the correlation of genetic effects at the top-associated cis-expression or -DNA methylation (DNAm) quantitative trait loci (cis-eQTLs or cis-mQTLs) between brain and blood (r b ). Using publicly available data, we find that genetic effects at the top cis-eQTLs or mQTLs are highly correlated between independent brain and blood samples ([Formula: see text] for cis-eQTLs and [Formula: see text] for cis-mQTLs)...
June 11, 2018: Nature Communications
https://www.readbyqxmd.com/read/29888306/accelerated-dna-methylation-aging-and-increased-resilience-in-veterans-the-biological-cost-for-soldiering-on
#3
Divya Mehta, Dagmar Bruenig, Bruce Lawford, Wendy Harvey, Tania Carrillo-Roa, Charles P Morris, Tanja Jovanovic, Ross McD Young, Elisabeth B Binder, Joanne Voisey
Accelerated epigenetic aging, the difference between the DNA methylation-predicted age (DNAm age) and the chronological age, is associated with a myriad of diseases. This study investigates the relationship between epigenetic aging and risk and protective factors of PTSD. Genome-wide DNA methylation analysis was performed in 211 individuals including combat-exposed Australian veterans (discovery cohort, n = 96 males) and trauma-exposed civilian males from the Grady Trauma Project (replication cohort, n = 115 males)...
February 2018: Neurobiology of Stress
https://www.readbyqxmd.com/read/29867961/human-%C3%AE-%C3%AE-t-cells-from-surface-receptors-to-the-therapy-of-high-risk-leukemias
#4
REVIEW
Vito Pistoia, Nicola Tumino, Paola Vacca, Irene Veneziani, Alessandro Moretta, Franco Locatelli, Lorenzo Moretta
γδ T lymphocytes are potent effector cells, capable of efficiently killing tumor and leukemia cells. Their activation is mediated by γδ T-cell receptor (TCR) and by activating receptors shared with NK cells (e.g., NKG2D and DNAM-1). γδ T-cell triggering occurs upon interaction with specific ligands, including phosphoantigens (for Vγ9Vδ2 TCR), MICA-B and UL16 binding protein (for NKG2D), and PVR and Nectin-2 (for DNAM-1). They also respond to cytokines undergoing proliferation and release of cytokines/chemokines...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29843655/the-role-of-oxytocin-receptor-gene-oxtr-dna-methylation-dnam-in-human-social-and-emotional-functioning-a-systematic-narrative-review
#5
Catherine Maud, Joanne Ryan, Jennifer E McIntosh, Craig A Olsson
BACKGROUND: The neuropeptide Oxytocin (OXT) plays a central role in birthing, mother-infant bonding and a broad range of related social behaviours in mammals. More recently, interest has extended to epigenetic programming of genes involved in oxytocinergic neurotransmission. This review brings together early findings in a rapidly developing field of research, examining relationships between DNA methylation (DNAm) of the Oxytocin Receptor Gene (OXTR) and social and emotional behaviour in human populations...
May 29, 2018: BMC Psychiatry
https://www.readbyqxmd.com/read/29777237/dna-methylation-variant-b-vitamins-intake-and-longitudinal-change-in-body-mass-index
#6
Xiang Li, Tiange Wang, Min Zhao, Tao Huang, Dianjianyi Sun, Liyuan Han, Hoirun Nisa, Xiaoyun Shang, Yoriko Heianza, Lu Qi
BACKGROUND: Growing evidence has implicated DNA methylation (DNAm) in the regulation of body adiposity; a recent epigenome-wide association study (EWAS) identified a genetic variant determining DNAm at the SREBF1 gene that affected body mass index (BMI). OBJECTIVE: In the present study, we tested interactions between DNAm variant rs752579 and methylation metabolism-related B-vitamins (folate, vitamin B2 , vitamin B6 , and vitamin B12 ) on longitudinal change in BMI in the Women's Health Initiative Memory Study (WHIMS)...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29771780/biomarkers-of-aging-in-hiv-infected-children-on-suppressive-antiretroviral-therapy
#7
Stephanie Shiau, Renate Strehlau, Jing Shen, Avy Violari, Faeezah Patel, Afaaf Liberty, Marc Foca, Shuang Wang, Mary Beth Terry, Michael T Yin, Ashraf Coovadia, Elaine J Abrams, Stephen M Arpadi, Louise Kuhn
BACKGROUND: Data on accelerated aging in HIV-infected children are limited. In this study we assess two biomarkers of aging - telomere length and DNA methylation (DNAm) age - in a cohort of early-treated HIV-infected children and compare these aging biomarkers to HIV-exposed uninfected (HEU) and HIV-unexposed uninfected (HUU) children. SETTING: Cross-sectional study of 120 HIV-infected, 33 HEU, and 25 HUU children enrolled in a cohort study in Johannesburg, South Africa...
April 27, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29761914/molecular-features-in-young-vs-elderly-breast-cancer-patients-and-the-impacts-on-survival-disparities-by-age-at-diagnosis
#8
Mei-Xia Wang, Jun-Ting Ren, Lu-Ying Tang, Ze-Fang Ren
Young and elderly breast cancer patients are more likely to have a poorer outcome than middle-aged patients. The intrinsic molecular features for this disparity are unclear. We obtained data from the Cancer Genome Atlas (TCGA) on May 15, 2017 to test the potential mediation effects of the molecular features on the association between age and prognosis with a four-step approach. The relative contributions of the molecular features (PAM50 subtype, risk stratification, DNAm age, and mutations in TP53, PIK3CA, MLL3, CDH1, GATA3, and MAP3K1) to age disparities in survival were estimated by Cox proportional hazard models with or without the features...
May 15, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29757192/cd155-loss-enhances-tumor-suppression-via-combined-host-and-tumor-intrinsic-mechanisms
#9
Xian-Yang Li, Indrajit Das, Ailin Lepletier, Venkateswar Addala, Tobias Bald, Kimberley Stannard, Deborah Barkauskas, Jing Liu, Amelia Roman Aguilera, Kazuyoshi Takeda, Matthias Braun, Kyohei Nakamura, Sebastien Jacquelin, Steven W Lane, Michele Wl Teng, William C Dougall, Mark J Smyth
Critical immune-suppressive pathways beyond programmed death 1 (PD-1) and programmed death ligand 1 (PD-L1) require greater attention. Nectins and nectin-like molecules might be promising targets for immunotherapy, since they play critical roles in cell proliferation and migration and exert immunomodulatory functions in pathophysiological conditions. Here, we show CD155 expression in both malignant cells and tumor-infiltrating myeloid cells in humans and mice. Cd155-/- mice displayed reduced tumor growth and metastasis via DNAM-1 upregulation and enhanced effector function of CD8+ T and NK cells, respectively...
May 14, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29743320/prospective-longitudinal-study-of-the-pregnancy-dna-methylome-the-us-pregnancy-race-environment-genes-preg-study
#10
Dana M Lapato, Sara Moyer, Emily Olivares, Ananda B Amstadter, Patricia A Kinser, Shawn J Latendresse, Colleen Jackson-Cook, Roxann Roberson-Nay, Jerome F Strauss, Timothy P York
PURPOSE: The goal of the Pregnancy, Race, Environment, Genes study was to understand how social and environmental determinants of health (SEDH), pregnancy-specific environments (PSE) and biological processes influence the timing of birth and account for the racial disparity in preterm birth. The study followed a racially diverse longitudinal cohort throughout pregnancy and included repeated measures of PSE and DNA methylation (DNAm) over the course of gestation and up to 1 year into the postpartum period...
May 9, 2018: BMJ Open
https://www.readbyqxmd.com/read/29706161/the-epigenetic-clock-at-birth-associations-with-maternal-antenatal-depression-and-child-psychiatric-problems
#11
Anna Suarez, Jari Lahti, Darina Czamara, Marius Lahti-Pulkkinen, Anna K Knight, Polina Girchenko, Esa Hämäläinen, Eero Kajantie, Jari Lipsanen, Hannele Laivuori, Pia M Villa, Rebecca M Reynolds, Alicia K Smith, Elisabeth B Binder, Katri Räikkönen
OBJECTIVE: Maternal antenatal depression may compromise the fetal developmental milieu and contribute to individual differences in aging and disease trajectories in later life. We evaluated the association between maternal antenatal depression and a novel biomarker of aging at birth, namely epigenetic gestational age (GA) based on fetal cord blood methylation data. We also examined whether this biomarker prospectively predicts and mediates maternal effects on early childhood psychiatric problems...
May 2018: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/29705119/relationship-between-epigenetic-maturity-and-respiratory-morbidity-in-preterm-infants
#12
Anna K Knight, Alicia K Smith, Karen N Conneely, Philippa Dalach, Yuk J Loke, Jeanie L Cheong, Peter G Davis, Jeffrey M Craig, Lex W Doyle, Christiane Theda
OBJECTIVE: To assess associations between epigenetic maturity of extremely preterm babies (born at less than 28 weeks of gestation), neonatal interventions, and respiratory outcomes, including the administration of surfactant and postnatal corticosteroids, duration of assisted ventilation, and development of bronchopulmonary dysplasia (BPD). STUDY DESIGN: DNA was extracted from neonatal blood spots collected after birth from 143 extremely preterm infants born 1991-1992 in Victoria, Australia and used to determined DNA methylation (DNAm)...
April 25, 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29698722/multi-tissue-dna-methylation-age-molecular-relationships-and-perspectives-for-advancing-biomarker-utility
#13
REVIEW
Jamaji C Nwanaji-Enwerem, Marc G Weisskopf, Andrea A Baccarelli
The multi-tissue DNA methylation estimator of chronological age (DNAm-age) has been associated with a wide range of exposures and health outcomes. Still, it is unclear how DNAm-age can have such broad relationships and how it can be best utilized as a biomarker. Understanding DNAm-age's molecular relationships is a promising approach to address this critical knowledge gap. In this review, we discuss the existing literature regarding DNAm-age's molecular relationships in six major categories: animal model systems, cancer processes, cellular aging processes, immune system processes, metabolic processes, and nucleic acid processes...
April 23, 2018: Ageing Research Reviews
https://www.readbyqxmd.com/read/29692868/epigenome-wide-association-study-of-total-serum-immunoglobulin-e-in-children-a-life-course-approach
#14
Cheng Peng, Andres Cardenas, Sheryl L Rifas-Shiman, Marie-France Hivert, Diane R Gold, Thomas A Platts-Mills, Xihong Lin, Emily Oken, Andrea A Baccarelli, Augusto A Litonjua, Dawn L DeMeo
Background: IgE-mediated sensitization may be epigenetically programmed in utero, but early childhood environment may further alter complex traits and disease phenotypes through epigenetic plasticity. However, the epigenomic footprint underpinning IgE-mediated type-I hypersensitivity has not been well-understood, especially under a longitudinal early-childhood life-course framework. Methods: We used epigenome-wide DNA methylation (IlluminaHumanMethylation450 BeadChip) in cord blood and mid-childhood peripheral blood to investigate pre- and post-natal methylation marks associated with mid-childhood (age 6...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29692214/peripheral-dna-methylation-cognitive-decline-and-brain-aging-pilot-findings-from-the-whitehall-ii-imaging-study
#15
Leonidas Chouliaras, Ehsan Pishva, Rita Haapakoski, Eniko Zsoldos, Abda Mahmood, Nicola Filippini, Joe Burrage, Jonathan Mill, Mika Kivimäki, Katie Lunnon, Klaus P Ebmeier
AIM: The present study investigated the link between peripheral DNA methylation (DNAm), cognitive impairment and brain aging. METHODS: We tested the association between blood genome-wide DNAm profiles using the Illumina 450K arrays, cognitive dysfunction and brain MRI measures in selected participants of the Whitehall II imaging sub-study. RESULTS: Eight differentially methylated regions were associated with cognitive impairment. Accelerated aging based on the Hannum epigenetic clock was associated with mean diffusivity and global fractional anisotropy...
May 2018: Epigenomics
https://www.readbyqxmd.com/read/29692198/nasal-dna-methylation-is-associated-with-childhood-asthma
#16
Xue Zhang, Jocelyn M Biagini Myers, J D Burleson, Ashley Ulm, Kelly S Bryan, Xiaoting Chen, Matthew T Weirauch, Theresa A Baker, Melinda S Butsch Kovacic, Hong Ji
AIM: We aim to study DNA methylation (DNAm) variations associated with childhood asthma. METHODS: Nasal DNAm was compared between sibling pairs discordant for asthma, 29 sib pairs for genome-wide association studies and 54 sib pairs for verification by pyrosequencing. Associations of methylation with asthma symptoms, allergy and environmental exposures were evaluated. In vitro experiments and functional genomic analyses were performed to explore biologic relevance...
May 2018: Epigenomics
https://www.readbyqxmd.com/read/29690909/targeting-chemotherapy-resistant-leukemia-by-combining-dnt-cellular-therapy-with-conventional-chemotherapy
#17
Branson Chen, Jong Bok Lee, Hyeonjeong Kang, Mark D Minden, Li Zhang
BACKGROUND: While conventional chemotherapy is effective at eliminating the bulk of leukemic cells, chemotherapy resistance in acute myeloid leukemia (AML) is a prevalent problem that hinders conventional therapies and contributes to disease relapse, and ultimately patient death. We have recently shown that allogeneic double negative T cells (DNTs) are able to target the majority of primary AML blasts in vitro and in patient-derived xenograft models. However, some primary AML blast samples are resistant to DNT cell therapy...
April 24, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29676998/an-epigenetic-biomarker-of-aging-for-lifespan-and-healthspan
#18
Morgan E Levine, Ake T Lu, Austin Quach, Brian H Chen, Themistocles L Assimes, Stefania Bandinelli, Lifang Hou, Andrea A Baccarelli, James D Stewart, Yun Li, Eric A Whitsel, James G Wilson, Alex P Reiner, Abraham Aviv, Kurt Lohman, Yongmei Liu, Luigi Ferrucci, Steve Horvath
Identifying reliable biomarkers of aging is a major goal in geroscience. While the first generation of epigenetic biomarkers of aging were developed using chronological age as a surrogate for biological age, we hypothesized that incorporation of composite clinical measures of phenotypic age that capture differences in lifespan and healthspan may identify novel CpGs and facilitate the development of a more powerful epigenetic biomarker of aging. Using an innovative two-step process, we develop a new epigenetic biomarker of aging, DNAm PhenoAge, that strongly outperforms previous measures in regards to predictions for a variety of aging outcomes, including all-cause mortality, cancers, healthspan, physical functioning, and Alzheimer's disease...
April 18, 2018: Aging
https://www.readbyqxmd.com/read/29667924/telomerase-may-paradoxically-accelerate-aging-of-the-dna-methylome
#19
Andrew R Mendelsohn, James W Larrick
DNA methylation (DNAm) clocks such as the Horvath DNAm clock provide the most accurate biological determination of biological age relative to chronological age available today. However, there is little correlation between DNAm clocks, telomere-based aging clocks, and transcriptomic-based aging clocks. Recently, a genome-wide association study identified single-nucleotide polymorphism variants of TERT, the gene that encodes telomerase, as accelerating intrinsic aging in the Horvath DNAm clock. These same variants have been previously associated with long telomeres in leukocytes, suggesting that TERT acts paradoxically on telomere-associated aging and DNAm-associated aging...
April 2018: Rejuvenation Research
https://www.readbyqxmd.com/read/29656664/epigenetic-aging-in-major-depressive-disorder
#20
Laura K M Han, Moji Aghajani, Shaunna L Clark, Robin F Chan, Mohammad W Hattab, Andrey A Shabalin, Min Zhao, Gaurav Kumar, Lin Ying Xie, Rick Jansen, Yuri Milaneschi, Brian Dean, Karolina A Aberg, Edwin J C G van den Oord, Brenda W J H Penninx
OBJECTIVE: Major depressive disorder is associated with an increased risk of mortality and aging-related diseases. The authors examined whether major depression is associated with higher epigenetic aging in blood as measured by DNA methylation (DNAm) patterns, whether clinical characteristics of major depression have a further impact on these patterns, and whether the findings replicate in brain tissue. METHOD: DNAm age was estimated using all methylation sites in blood of 811 depressed patients and 319 control subjects with no lifetime psychiatric disorders and low depressive symptoms from the Netherlands Study of Depression and Anxiety...
April 16, 2018: American Journal of Psychiatry
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