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https://www.readbyqxmd.com/read/28211912/dna-methylation-map-in-circulating-leukocytes-mirrors-subcutaneous-adipose-tissue-methylation-pattern-a-genome-wide-analysis-from-non-obese-and-obese-patients
#1
A B Crujeiras, A Diaz-Lagares, J Sandoval, F I Milagro, S Navas-Carretero, M C Carreira, A Gomez, D Hervas, M P Monteiro, F F Casanueva, M Esteller, J A Martinez
The characterization of the epigenetic changes within the obesity-related adipose tissue will provide new insights to understand this metabolic disorder, but adipose tissue is not easy to sample in population-based studies. We aimed to evaluate the capacity of circulating leukocytes to reflect the adipose tissue-specific DNA methylation status of obesity susceptibility. DNA samples isolated from subcutaneous adipose tissue and circulating leukocytes were hybridized in the Infinium HumanMethylation 450 BeadChip...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28203724/endocrine-changes-fetal-growth-and-uterine-artery-hemodynamics-after-chronic-estrogen-suppression-during-the-last-trimester-of-equine-pregnancy%C3%A2
#2
Alejandro Esteller-Vico, Barry A Ball, Mats H T Troedsson, Edward L Squires
No abstract text is available yet for this article.
February 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28178655/chl1-hypermethylation-as-a-potential-biomarker-of-poor-prognosis-in-breast-cancer
#3
Esperanza Martín-Sánchez, Saioa Mendaza, Ane Ulazia-Garmendia, Iñaki Monreal-Santesteban, Idoia Blanco-Luquin, Alicia Córdoba, Francisco Vicente-García, Noemí Pérez-Janices, David Escors, Diego Megías, Paula López-Serra, Manel Esteller, José Juan Illarramendi, David Guerrero-Setas
The CHL1 gene encodes a cell-adhesion molecule proposed as being a putative tumour-suppressor gene in breast cancer (BC). However, neither the underlying molecular mechanisms nor the clinical value of CHL1 downregulation in BC has been explored. The methylation status of three CpG sites in the CHL1 promoter was analysed by pyrosequencing in neoplastic biopsies from 142 patients with invasive BC and compared with that of non-neoplastic tissues. We found higher CHL1 methylation levels in breast tumours than in non-neoplastic tissues, either from mammoplasties or adjacent-to-tumour, which correlated with lower levels of protein expression in tumours measured by immunohistochemistry...
February 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28173075/metformin-pharmacogenomics-a-genome-wide-association-study-to-identify-genetic-and-epigenetic-biomarkers-involved-in-metformin-anticancer-response-using-human-lymphoblastoid-cell-lines
#4
Nifang Niu, Tongzheng Liu, Junmei Cairns, Reynold C Ly, Xianglin Tan, Min Deng, Brooke L Fridley, Krishna R Kalari, Ryan P Abo, Gregory Jenkins, Anthony Batzler, Erin E Carlson, Poulami Barman, Sebastian Moran, Holger Heyn, Manel Esteller, Liewei Wang
No abstract text is available yet for this article.
November 1, 2016: Human Molecular Genetics
https://www.readbyqxmd.com/read/28172721/p091-usefulness-of-transcriptional-whole-blood-biomarkers-as-a-non-invasive-surrogate-marker-of-mucosal-healing-and-endoscopic-response-in-ulcerative-colitis
#5
N Planell, M C Masamunt, R Franco Leal, L Rodríguez, M Esteller, J J Lozano, A Ramírez, M D L Setsuko Ayrizono, C Saddy Rodrigues Coy, I Alfaro, I Ordás, S Visvanathan, E Ricart, J Guardiola, J Panés, A Salas
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28166834/downregulation-of-mir-130b-301b-cluster-is-mediated-by-aberrant-promoter-methylation-and-impairs-cellular-senescence-in-prostate-cancer
#6
João Ramalho-Carvalho, Inês Graça, Antonio Gomez, Jorge Oliveira, Rui Henrique, Manel Esteller, Carmen Jerónimo
BACKGROUND: Numerous DNA-damaging cellular stresses, including oncogene activation and DNA-damage response (DDR), may lead to cellular senescence. Previous observations linked microRNA deregulation with altered senescent patterns, prompting us to investigate whether epigenetic repression of microRNAs expression might disrupt senescence in prostate cancer (PCa) cells. METHODS: Differential methylation mapping in prostate tissues was carried using Infinium HumanMethylation450 BeadChip...
February 6, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28143614/mir-193b-promoter-methylation-accurately-detects-prostate-cancer-in-urine-sediments-and-mir-34b-c-or-mir-129-2-promoter-methylation-define-subsets-of-clinically-aggressive-tumors
#7
Jorge Torres-Ferreira, João Ramalho-Carvalho, Antonio Gomez, Francisco Duarte Menezes, Rui Freitas, Jorge Oliveira, Luís Antunes, Maria José Bento, Manel Esteller, Rui Henrique, Carmen Jerónimo
BACKGROUND: Contemporary challenges of prostate cancer (PCa) include overdiagnosis and overtreatment, entailing the need for novel clinical tools to improve risk stratification and therapy selection. PCa diagnosis and prognostication might be perfected using epigenetic biomarkers, among which aberrant DNA methylation of microRNA promoters has not been systematically explored. Herein, we identified aberrantly methylated microRNAs promoters in PCa and assessed its diagnostic and prognostic biomarker potential...
January 31, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28139759/the-intervening-domain-from-mecp2-enhances-the-dna-affinity-of-the-methyl-binding-domain-and-provides-an-independent-dna-interaction-site
#8
Rafael Claveria-Gimeno, Pilar M Lanuza, Ignacio Morales-Chueca, Olga C Jorge-Torres, Sonia Vega, Olga Abian, Manel Esteller, Adrian Velazquez-Campoy
Methyl-CpG binding protein 2 (MeCP2) preferentially interacts with methylated DNA and it is involved in epigenetic regulation and chromatin remodelling. Mutations in MeCP2 are linked to Rett syndrome, the leading cause of intellectual retardation in girls and causing mental, motor and growth impairment. Unstructured regions in MeCP2 provide the plasticity for establishing interactions with multiple binding partners. We present a biophysical characterization of the methyl binding domain (MBD) from MeCP2 reporting the contribution of flanking domains to its structural stability and dsDNA interaction...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105729/whole-genome-grey-and-white-matter-dna-methylation-profiles-in-dorsolateral-prefrontal-cortex
#9
Jose Vicente Sanchez-Mut, Holger Heyn, Enrique Vidal, Raúl Delgado-Morales, Sebastian Moran, Sergi Sayols, Juan Sandoval, Isidre Ferrer, Manel Esteller, Johannes Gräff
The brain's neocortex is anatomically organized into grey and white matter, which are mainly composed by neuronal and glial cells, respectively. The neocortex can be further divided in different Brodmann areas according to their cytoarchitectural organization, which are associated with distinct cortical functions. There is increasing evidence that brain development and function are governed by epigenetic processes, yet their contribution to the functional organization of the neocortex remains incompletely understood...
January 20, 2017: Synapse
https://www.readbyqxmd.com/read/28059796/a-common-variant-in-the-mc1r-gene-p-v92m-is-associated-with-alzheimer-s-disease-risk
#10
Gemma Tell-Marti, Joan Anton Puig-Butille, Miriam Potrony, Estel Plana, Celia Badenas, Anna Antonell, Raquel Sanchez-Valle, José L Molinuevo, Alberto Lleó, Daniel Alcolea, Juan Fortea, Ruben Fernandez-Santiago, Jordi Clarimón, Albert Lladó, Susana Puig
Despite the recent identification of some novel risk genes for Alzheimer's disease (AD), the genetic etiology of late-onset Alzheimer's disease (LOAD) remains largely unknown. The inclusion of these novel risk genes to the risk attributable to the APOE gene accounts for roughly half of the total genetic variance in LOAD. The evidence indicates that undiscovered genetic factors may contribute to AD susceptibility. In the present study, we sequenced the MC1R gene in 525 Spanish LOAD patients and in 160 controls...
December 3, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28044062/opening-up-the-dna-methylome-of-dementia
#11
R Delgado-Morales, M Esteller
Dementia is a complex clinical condition characterized by several cognitive impairments that interfere with patient independence in executing everyday tasks. Various neurodegenerative disorders have dementia in common among their clinical manifestations. In addition, these diseases, such as Alzheimer's disease, Parkinson's disease, dementia with Lewy bodies and frontotemporal dementia, share molecular alterations at the neuropathological level. In recent years, the field of neuroepigenetics has expanded massively and it is now clear that epigenetic processes, such as DNA methylation, are mechanisms involved in both normal and pathological brain function...
January 3, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28008913/collisional-cross-section-of-water-molecules-in-vapour-studied-by-means-of-1-h-relaxation-in-nmr
#12
Daniele Mammoli, Estel Canet, Roberto Buratto, Pascal Miéville, Lothar Helm, Geoffrey Bodenhausen
In gas phase, collisions that affect the rotational angular momentum lead to the return of the magnetization to its equilibrium (relaxation) in Nuclear Magnetic Resonance (NMR). To the best of our knowledge, the longitudinal relaxation rates R1 = 1/T1 of protons in H2O and HDO have never been measured in gas phase. We report R1 in gas phase in a field of 18.8 T, i.e., at a proton Larmor frequency ν0 = 800 MHz, at temperatures between 353 and 373 K and pressures between 9 and 101 kPa. By assuming that spin rotation is the dominant relaxation mechanism, we estimated the effective cross-section σJ for the transfer of angular momentum due to H2O-H2O and HDO-D2O collisions...
December 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27999094/the-epigenetic-landscape-of-alu-repeats-delineates-the-structural-and-functional-genomic-architecture-of-colon-cancer-cells
#13
Mireia Jordà, Anna Díez-Villanueva, Izaskun Mallona, Berta Martín, Sergi Lois, Víctor Barrera, Manel Esteller, Tanya Vavouri, Miguel A Peinado
Cancer cells exhibit multiple epigenetic changes with prominent local DNA hypermethylation and widespread hypomethylation affecting large chromosomal domains. Epigenome studies often disregard the study of repeat elements owing to technical complexity and their undefined role in genome regulation. We have developed NSUMA (Next-generation Sequencing of UnMethylated Alu), a cost-effective approach allowing the unambiguous interrogation of DNA methylation in more than 130,000 individual Alu elements, the most abundant retrotransposon in the human genome...
January 2017: Genome Research
https://www.readbyqxmd.com/read/27991928/stem-cell-like-transcriptional-reprogramming-mediates-metastatic-resistance-to-mtor-inhibition
#14
F Mateo, E J Arenas, H Aguilar, J Serra-Musach, G Ruiz de Garibay, J Boni, M Maicas, S Du, F Iorio, C Herranz-Ors, A Islam, X Prado, A Llorente, A Petit, A Vidal, I Català, T Soler, G Venturas, A Rojo-Sebastian, H Serra, D Cuadras, I Blanco, J Lozano, F Canals, A M Sieuwerts, V de Weerd, M P Look, S Puertas, N García, A S Perkins, N Bonifaci, M Skowron, L Gómez-Baldó, V Hernández, A Martínez-Aranda, M Martínez-Iniesta, X Serrat, J Cerón, J Brunet, M P Barretina, M Gil, C Falo, A Fernández, I Morilla, S Pernas, M J Plà, X Andreu, M A Seguí, R Ballester, E Castellà, M Nellist, S Morales, J Valls, A Velasco, X Matias-Guiu, A Figueras, J V Sánchez-Mut, M Sánchez-Céspedes, A Cordero, J Gómez-Miragaya, L Palomero, A Gómez, T F Gajewski, E E W Cohen, M Jesiotr, L Bodnar, M Quintela-Fandino, N López-Bigas, R Valdés-Mas, X S Puente, F Viñals, O Casanovas, M Graupera, J Hernández-Losa, S Ramón Y Cajal, L García-Alonso, J Saez-Rodriguez, M Esteller, A Sierra, N Martín-Martín, A Matheu, A Carracedo, E González-Suárez, M Nanjundan, J Cortés, C Lázaro, M D Odero, J W M Martens, G Moreno-Bueno, M H Barcellos-Hoff, A Villanueva, R R Gomis, M A Pujana
Inhibitors of the mechanistic target of rapamycin (mTOR) are currently used to treat advanced metastatic breast cancer. However, whether an aggressive phenotype is sustained through adaptation or resistance to mTOR inhibition remains unknown. Here, complementary studies in human tumors, cancer models and cell lines reveal transcriptional reprogramming that supports metastasis in response to mTOR inhibition. This cancer feature is driven by EVI1 and SOX9. EVI1 functionally cooperates with and positively regulates SOX9, and promotes the transcriptional upregulation of key mTOR pathway components (REHB and RAPTOR) and of lung metastasis mediators (FSCN1 and SPARC)...
December 19, 2016: Oncogene
https://www.readbyqxmd.com/read/27933180/serum-levels-of-immunoglobulins-and-severity-of-community-acquired-pneumonia
#15
Mari C de la Torre, Pere Torán, Mateu Serra-Prat, Elisabet Palomera, Estel Güell, Ester Vendrell, Joan Carles Yébenes, Antoni Torres, Jordi Almirall
INSTRUCTION: There is evidence of a relationship between severity of infection and inflammatory response of the immune system. The objective is to assess serum levels of immunoglobulins and to establish its relationship with severity of community-acquired pneumonia (CAP) and clinical outcome. METHODS: This was an observational and cross-sectional study in which 3 groups of patients diagnosed with CAP were compared: patients treated in the outpatient setting (n=54), patients requiring in-patient care (hospital ward) (n=173), and patients requiring admission to the intensive care unit (ICU) (n=191)...
2016: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/27923837/the-nci-60-methylome-and-its-integration-into-cellminer
#16
William C Reinhold, Sudhir Varma, Margot Sunshine, Vinodh Rajapakse, Augustin Luna, Kurt W Kohn, Holly Stevenson, Yonghong Wang, Holger Heyn, Vanesa Nogales, Sebastian Moran, David J Goldstein, James H Doroshow, Paul S Meltzer, Manel Esteller, Yves Pommier
A unique resource for systems pharmacology and genomic studies is the NCI-60 cancer cell line panel, which provides data for the largest publicly available library of compounds with cytotoxic activity (∼21,000 compounds), including 108 FDA-approved and 70 clinical trial drugs as well as genomic data, including whole-exome sequencing, gene and miRNA transcripts, DNA copy number, and protein levels. Here, we provide the first readily usable genome-wide DNA methylation database for the NCI-60, including 485,577 probes from the Infinium HumanMethylation450k BeadChip array, which yielded DNA methylation signatures for 17,559 genes integrated into our open access CellMiner version 2...
February 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/27918140/investigation-of-intrinsically-disordered-proteins-through-exchange-with-hyperpolarized-water
#17
Dennis Kurzbach, Estel Canet, Andrea G Flamm, Aditya Jhajharia, Emmanuelle M M Weber, Robert Konrat, Geoffrey Bodenhausen
Hyperpolarized water can selectively enhance NMR signals of rapidly exchanging protons in osteopontin (OPN), a metastasis-associated intrinsically disordered protein (IDP), at near-physiological pH and temperature. The transfer of magnetization from hyperpolarized water is limited to solvent-exposed residues and therefore selectively enhances signals in (1) H-(15) N correlation spectra. Binding to the polysaccharide heparin was found to induce the unfolding of preformed structural elements in OPN.
January 2, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/27911230/bromodomain-inhibitors-and-cancer-therapy-from-structures-to-applications
#18
Montserrat Pérez-Salvia, Manel Esteller
Aberrations in the epigenetic landscape are a hallmark of cancer. Alterations in enzymes that are "writers", "erasers", or "readers" of histone modification marks are common. Bromodomains are "readers" that bind acetylated lysines in histone tails. Their most important function is the regulation of gene transcription by the recruitment of different molecular partners. Moreover, proteins containing bromodomains are also epigenetic regulators, although little is known about the specific function of these domains...
December 2, 2016: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/27894957/dna-methylation-profiling-identifies-ptrf-cavin-1-as-a-novel-tumor-suppressor-in-ewing-sarcoma-when-co-expressed-with-caveolin-1
#19
Juan Huertas-Martínez, Franck Court, Santiago Rello-Varona, David Herrero-Martín, Olga Almacellas-Rabaiget, Miguel Sáinz-Jaspeado, Silvia Garcia-Monclús, Laura Lagares-Tena, Raquel Buj, Lourdes Hontecillas-Prieto, Ana Sastre, Daniel Azorin, Xavier Sanjuan, Roser López-Alemany, Sebastian Moran, Josep Roma, Soledad Gallego, Jaume Mora, Xavier García Del Muro, Paloma H Giangrande, Miquel A Peinado, Javier Alonso, Enrique de Alava, Dave Monk, Manel Esteller, Oscar M Tirado
Epigenetic modifications have been shown to be important in developmental tumors as Ewing sarcoma. We profiled the DNA methylation status of 15 primary tumors, 7 cell lines, 10 healthy tissues and 4 human mesenchymal stem cells lines samples using the Infinium Human Methylation 450K. Differential methylation analysis between Ewing sarcoma and reference samples revealed 1166 hypermethylated and 864 hypomethylated CpG sites (Bonferroni p < 0.05, δ-β-value with absolute difference of >0.20) corresponding to 392 and 470 genes respectively...
February 1, 2017: Cancer Letters
https://www.readbyqxmd.com/read/27881738/human-selenoprotein-p-and-s-variant-mrnas-with-different-numbers-of-secis-elements-and-inferences-from-mutant-mice-of-the-roles-of-multiple-secis-elements
#20
Sen Wu, Marco Mariotti, Didac Santesmasses, Kristina E Hill, Janinah Baclaocos, Estel Aparicio-Prat, Shuping Li, John Mackrill, Yuanyuan Wu, Michael T Howard, Mario Capecchi, Roderic Guigó, Raymond F Burk, John F Atkins
Dynamic redefinition of the 10 UGAs in human and mouse selenoprotein P (Sepp1) mRNAs to specify selenocysteine instead of termination involves two 3' UTR structural elements (SECIS) and is regulated by selenium availability. In addition to the previously known human Sepp1 mRNA poly(A) addition site just 3' of SECIS 2, two further sites were identified with one resulting in 10-25% of the mRNA lacking SECIS 2. To address function, mutant mice were generated with either SECIS 1 or SECIS 2 deleted or with the first UGA substituted with a serine codon...
November 2016: Open Biology
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