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https://www.readbyqxmd.com/read/28536600/evolinc-a-tool-for-the-identification-and-evolutionary-comparison-of-long-intergenic-non-coding-rnas
#1
Andrew D L Nelson, Upendra K Devisetty, Kyle Palos, Asher K Haug-Baltzell, Eric Lyons, Mark A Beilstein
Long intergenic non-coding RNAs (lincRNAs) are an abundant and functionally diverse class of eukaryotic transcripts. Reported lincRNA repertoires in mammals vary, but are commonly in the thousands to tens of thousands of transcripts, covering ~90% of the genome. In addition to elucidating function, there is particular interest in understanding the origin and evolution of lincRNAs. Aside from mammals, lincRNA populations have been sparsely sampled, precluding evolutionary analyses focused on their emergence and persistence...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28479693/telomeres-in-health-and-disease
#2
REVIEW
Shailja Chatterjee
Telomeres are repetitive ribonucleoprotein complexes present at ends of chromosomes. To synthesize this manuscript, a thorough literature search was done using PubMed, MEDLINE and Cochrane review for English-language literature and data available from the period of 2005-2016 were analyzed for manuscript writing. Telomeres help in maintaining the cellular health, inbuilt cellular mechanisms, metabolism and normal cell cycle. Telomerase is a specialized enzyme that possesses catalytic subunits - reverse transcriptase, Terc and dyskerin...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28468592/whole-transcriptome-analysis-reveals-dysregulated-oncogenic-lncrnas-in-natural-killer-t-cell-lymphoma-and-establishes-mir155hg-as-a-target-of-prdm1
#3
Esra Baytak, Qiang Gong, Burcu Akman, Hongling Yuan, Wing C Chan, Can Küçük
Natural killer/T-cell lymphoma is a rare but aggressive neoplasm with poor prognosis. Despite previous reports that showed potential tumor suppressors, such as PRDM1 or oncogenes associated with the etiology of this malignancy, the role of long non-coding RNAs in natural killer/T-cell lymphoma pathobiology has not been addressed to date. Here, we aim to identify cancer-associated dysregulated long non-coding RNAs and signaling pathways or biological processes associated with these long non-coding RNAs in natural killer/T-cell lymphoma cases and to identify the long non-coding RNAs transcriptionally regulated by PRDM1...
May 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28467926/a-specific-gut-microbiota-dysbiosis-of-type-2-diabetic-mice-induces-glp-1-resistance-through-an-enteric-no-dependent-and-gut-brain-axis-mechanism
#4
Estelle Grasset, Anthony Puel, Julie Charpentier, Xavier Collet, Jeffrey E Christensen, François Tercé, Rémy Burcelin
Glucagon-like peptide-1 (GLP-1)-based therapies control glycemia in type 2 diabetic (T2D) patients. However, in some patients the treatment must be discontinued, defining a state of GLP-1 resistance. In animal models we identified a specific set of ileum bacteria impairing the GLP-1-activated gut-brain axis for the control of insulin secretion and gastric emptying. Using prediction algorithms, we identified bacterial pathways related to amino acid metabolism and transport system modules associated to GLP-1 resistance...
May 2, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28459868/aberrant-leukocyte-telomere-length-in-birdshot-uveitis
#5
Nadia Vazirpanah, Fleurieke H Verhagen, Anna Rothova, Tom O A R Missotten, Mirjam van Velthoven, Anneke I Den Hollander, Carel B Hoyng, Timothy R D J Radstake, Jasper C A Broen, Jonas J W Kuiper
PURPOSE: Birdshot Uveitis (BU) is an archetypical chronic inflammatory eye disease, with poor visual prognosis, that provides an excellent model for studying chronic inflammation. BU typically affects patients in the fifth decade of life. This suggests that it may represent an age-related chronic inflammatory disease, which has been linked to increased erosion of telomere length of leukocytes. METHODS: To study this in detail, we exploited a sensitive standardized quantitative real-time polymerase chain reaction to determine the peripheral blood leukocyte telomere length (LTL) in 91 genotyped Dutch BU patients and 150 unaffected Dutch controls...
2017: PloS One
https://www.readbyqxmd.com/read/28424414/integrated-analysis-of-promoter-methylation-and-expression-of-telomere-related-genes-in-breast-cancer
#6
Jianfu Heng, Fan Zhang, Xinwu Guo, Lili Tang, Limin Peng, Xipeng Luo, Xunxun Xu, Shouman Wang, Lizhong Dai, Jun Wang
Telomeres at the ends of eukaryotic chromosomes play a critical role in tumorgenesis. Using microfluidic PCR and next-generation bisulfite sequencing technology, we investigated the promoter methylation of 29 telomere related genes in paired tumor and normal tissues from 184 breast cancer patients. The expression of significantly differentially methylated genes was quantified using qPCR method.We observed that the average methylation level of the 29 telomere related genes was significant higher in tumor than that in normal tissues (P = 4...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28357685/familial-acute-myeloid-leukemia-and-myelodysplasia-in-hungary
#7
Attila Péter Király, Krisztián Kállay, Ambrus Gángó, Ádám Kellner, Miklós Egyed, Anita Szőke, Richárd Kiss, István Vályi-Nagy, Judit Csomor, András Matolcsy, Csaba Bödör
Although genetic predisposition to haematological malignancies has long been known, genetic testing is not yet the part of the routine diagnostics. In the last ten years, next generation sequencing based studies identified novel germline mutations in the background of familial aggregation of certain haematologic disorders including myelodysplastic syndromes (MDS) and acute myeloid leukaemia (AML). This is supported by the fact that the myeloid neoplasms with genetic predisposition represent a new category in the revised 2016 World Health Organization classification...
March 29, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28302863/transfer-of-dysbiotic-gut-microbiota-has-beneficial-effects-on-host-liver-metabolism
#8
Simon Nicolas, Vincent Blasco-Baque, Audren Fournel, Jerome Gilleron, Pascale Klopp, Aurelie Waget, Franck Ceppo, Alysson Marlin, Roshan Padmanabhan, Jason S Iacovoni, François Tercé, Patrice D Cani, Jean-François Tanti, Remy Burcelin, Claude Knauf, Mireille Cormont, Matteo Serino
Gut microbiota dysbiosis has been implicated in a variety of systemic disorders, notably metabolic diseases including obesity and impaired liver function, but the underlying mechanisms are uncertain. To investigate this question, we transferred caecal microbiota from either obese or lean mice to antibiotic-free, conventional wild-type mice. We found that transferring obese-mouse gut microbiota to mice on normal chow (NC) acutely reduces markers of hepatic gluconeogenesis with decreased hepatic PEPCK activity, compared to non-inoculated mice, a phenotypic trait blunted in conventional NOD2 KO mice...
March 16, 2017: Molecular Systems Biology
https://www.readbyqxmd.com/read/28264499/current-insights-to-regulation-and-role-of-telomerase-in-human-diseases
#9
REVIEW
Mert Burak Ozturk, Yinghui Li, Vinay Tergaonkar
The telomerase ribonucleoprotein complex has a pivotal role in regulating the proliferation and senescence of normal somatic cells as well as cancer cells. This complex is comprised mainly of telomerase reverse transcriptase (TERT), telomerase RNA component (TERC) and other associated proteins that function to elongate telomeres localized at the end of the chromosomes. While reactivation of telomerase is a major hallmark of most cancers, together with the synergistic activation of other oncogenic signals, deficiency in telomerase and telomeric proteins might lead to aging and senescence-associated disorders...
February 28, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28195142/a-genome-wide-association-study-yields-five-novel-thyroid-cancer-risk-loci
#10
Julius Gudmundsson, Gudmar Thorleifsson, Jon K Sigurdsson, Lilja Stefansdottir, Jon G Jonasson, Sigurjon A Gudjonsson, Daniel F Gudbjartsson, Gisli Masson, Hrefna Johannsdottir, Gisli H Halldorsson, Simon N Stacey, Hannes Helgason, Patrick Sulem, Leigha Senter, Huiling He, Sandya Liyanarachchi, Matthew D Ringel, Esperanza Aguillo, Angeles Panadero, Enrique Prats, Almudena Garcia-Castaño, Ana De Juan, Fernando Rivera, Li Xu, Lambertus A Kiemeney, Gudmundur I Eyjolfsson, Olof Sigurdardottir, Isleifur Olafsson, Hoskuldur Kristvinsson, Romana T Netea-Maier, Thorvaldur Jonsson, Jose I Mayordomo, Theo S Plantinga, Hannes Hjartarson, Jon Hrafnkelsson, Erich M Sturgis, Unnur Thorsteinsdottir, Thorunn Rafnar, Albert de la Chapelle, Kari Stefansson
The great majority of thyroid cancers are of the non-medullary type. Here we report findings from a genome-wide association study of non-medullary thyroid cancer, including in total 3,001 patients and 287,550 controls from five study groups of European descent. Our results yield five novel loci (all with Pcombined<3 × 10(-8)): 1q42.2 (rs12129938 in PCNXL2), 3q26.2 (rs6793295 a missense mutation in LRCC34 near TERC), 5q22.1 (rs73227498 between NREP and EPB41L4A), 10q24.33 (rs7902587 near OBFC1), and two independently associated variants at 15q22...
February 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/28105518/associations-between-hepatic-mirna-expression-liver-triacylglycerols-and-gut-microbiota-during-metabolic-adaptation-to-high-fat-diet-in-mice
#11
Vincent Blasco-Baque, Berengère Coupé, Aurelie Fabre, Sandra Handgraaf, Pierre Gourdy, Jean-François Arnal, Michael Courtney, Carole Schuster-Klein, Beatrice Guardiola, François Tercé, Rémy Burcelin, Matteo Serino
AIMS/HYPOTHESIS: Despite the current pandemic of metabolic diseases, our understanding of the diverse nature of the development of metabolic alterations in people who eat a high-fat diet (HFD) is still poor. We recently demonstrated a cardio-metabolic adaptation in mice fed an HFD, which was characterised by a specific gut and periodontal microbiota profile. Since the severity of hepatic disease is characterised by specific microRNA (miRNA) signatures and the gut microbiota is a key driver of both hepatic disease and miRNA expression, we analysed the expression of three hepatic miRNA and studied their correlation with hepatic triacylglycerol content and gut microbiota...
January 19, 2017: Diabetologia
https://www.readbyqxmd.com/read/28070015/inhaled-resveratrol-treatments-slow-ageing-related-degenerative-changes-in-mouse-lung
#12
Sonia Navarro, Raghava Reddy, Jooeun Lee, David Warburton, Barbara Driscoll
BACKGROUND: Lung ageing, a significant risk factor for chronic human lung diseases such as COPD and emphysema, is characterised by airspace enlargement and decreasing lung function. Likewise, in prematurely ageing telomerase null (terc-/-) mice, p53 stabilisation within diminishing numbers of alveolar epithelial type 2 cells (AEC2) accompanies reduced lung function. Resveratrol (RSL) is a plant phytoalexin that has previously showed efficacy in enhancing invertebrate longevity and supporting mammalian muscle metabolism when delivered orally...
January 9, 2017: Thorax
https://www.readbyqxmd.com/read/28057933/polymorphisms-in-telomere-length-associated-terc-and-tert-predispose-for-ischemic-stroke-in-a-chinese-han-population
#13
Shuo Zhang, Guofa Ji, Yiqian Liang, Rui Zhang, Puyu Shi, Dangshe Guo, Chunqi Li, Jing Feng, Feng Liu, Rong Peng, Mingwei Chen
The role of telomere in genomic stability is an established fact. Variation in leukocyte telomere length (LTL) has been considered a crucial factor that associated with age-associated diseases. To elucidate the association between LTL variation and ischemic stroke (IS) risk, we selected ten single nucleotide polymorphisms (SNPs) in three genes (TERC, TERT and RTEL1) that previously reported link to LTL, and genotyped SNPs of these genes in a case-control study. The association between polymorphisms and IS risk were tested by Chi squared test and haplotype analysis...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28039025/common-variants-of-human-tert-and-terc-genes-and-susceptibility-to-sporadic-alzheimers-disease
#14
D Scarabino, E Broggio, G Gambina, F Pelliccia, R M Corbo
Studies investigating telomere length in association with cognitive decline, dementia, and sporadic Alzheimer's disease (AD) have frequently found shorter telomeres to be associated with the development of AD and telomerase expression with pathological processes in AD. Human telomerase is constituted by two components: the telomerase reverse transcriptase (TERT) and the telomerase RNA component (TERC). Genetic variation at the two loci has been investigated in relation to telomere length, longevity, and common diseases of advanced age, but not in relation to AD...
February 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/27905656/-persistent-elevation-of-aspartate-aminotransferase-ast-due-to-the-presence-of-macro-ast-report-of-one-case
#15
Verónica Bustamante, Juan Pablo Arab, Florencia Terc, Helena Poggi, Manuela Goycoolea, Marco Arrese, Teresita Quiroga, Carlos Benítez
We report an asymptomatic 23-year-old woman with an isolated and persistent increase in serum levels of aspartate aminotransferase (AST). An extensive work up including laboratory and image testing revealed no abnormalities thus suggesting the presence of macro-AST. A polyethylene glycol (PEG) precipitation assay was performed and confirmed the presence of macro-AST.
August 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27871469/placental-telomere-length-decline-with-gestational-age-differs-by-sex-and-tert-dnmt1-and-dnmt3a-dna-methylation
#16
Samantha L Wilson, Yao Liu, Wendy P Robinson
INTRODUCTION: Telomere length (TL) has been suggested to be influenced by inherited genetic and epigenetic variation, hormonal effects, oxidative stress and age. However, the dynamics of TL during in utero development have not been well explored. This study investigates the relationship between placental TL and sex, gestational age (GA), and DNA methylation (DNAm). Placental TL is further evaluated in pregnancies complicated by preeclampsia (PE) and intrauterine growth restriction (IUGR), conditions hypothesized to lead to decreased placental TL due to increased oxidative stress...
December 2016: Placenta
https://www.readbyqxmd.com/read/27836952/prevalence-and-characteristics-of-tert-and-terc-mutations-in-suspected-genetic-pulmonary-fibrosis
#17
Raphael Borie, Laure Tabèze, Gabriel Thabut, Hilario Nunes, Vincent Cottin, Sylvain Marchand-Adam, Grégoire Prevot, Abdellatif Tazi, Jacques Cadranel, Herve Mal, Lidwine Wemeau-Stervinou, Anne Bergeron Lafaurie, Dominique Israel-Biet, Clement Picard, Martine Reynaud Gaubert, Stephane Jouneau, Jean-Marc Naccache, Julie Mankikian, Christelle Ménard, Jean-François Cordier, Dominique Valeyre, Marion Reocreux, Bernard Grandchamp, Patrick Revy, Caroline Kannengiesser, Bruno Crestani
Telomerase reverse transcriptase (TERT) or telomerase RNA (TERC) gene mutation is a major monogenic cause of pulmonary fibrosis. Sequencing of TERT/TERC genes is proposed to patients with familial pulmonary fibrosis. Little is known about the possible predictors of this mutation and its impact on prognosis.We retrospectively analysed all the genetic diagnoses made between 2007-2014 in patients with pulmonary fibrosis. We evaluated the prevalence of TERT/TERC disease-associated variant (DAV), factors associated with a DAV, and the impact of the DAV on survival...
December 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/27823970/expression-of-functional-alternative-telomerase-rna-component-gene-in-mouse-brain-and-in-motor-neurons-cells-protects-from-oxidative-stress
#18
Erez Eitan, Admoni Tamar, Grin Yossi, Refael Peleg, Alex Braiman, Esther Priel
Telomerase, a ribonucleoprotein, is highly expressed and active in many tumor cells and types, therefore it is considered to be a target for anti-cancer agents. On the other hand, recent studies demonstrated that activation of telomerase is a potential therapeutic target for age related diseases. Telomerase mainly consists of a catalytic protein subunit with a reverse transcription activity (TERT) and an RNA component (TERC), a long non-coding RNA, which serves as a template for the re-elongation of telomeres by TERT...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27819178/myelodysplastic-syndromes-and-acute-leukemia-with-genetic-predispositions-a-new-challenge-for-hematologists
#19
REVIEW
Nicolas Duployez, Sophie Lejeune, Aline Renneville, Claude Preudhomme
The determination of an underlying genetic predisposition is not automatically part of the diagnosis of hematological malignancies (HM) in routine practice. However, it is assumed that genetic predispositions to HM are currently underestimated due to great variations in disease phenotype, variable latency and incomplete penetrance. Most of patients do not display any biological or clinical signs besides the overt hematological disease and many of them have a lack of personal or family history of malignancies...
December 2016: Expert Review of Hematology
https://www.readbyqxmd.com/read/27818134/transcriptomic-characterization-of-sf3b1-mutation-reveals-its-pleiotropic-effects-in-chronic-lymphocytic-leukemia
#20
Lili Wang, Angela N Brooks, Jean Fan, Youzhong Wan, Rutendo Gambe, Shuqiang Li, Sarah Hergert, Shanye Yin, Samuel S Freeman, Joshua Z Levin, Lin Fan, Michael Seiler, Silvia Buonamici, Peter G Smith, Kevin F Chau, Carrie L Cibulskis, Wandi Zhang, Laura Z Rassenti, Emanuela M Ghia, Thomas J Kipps, Stacey Fernandes, Donald B Bloch, Dylan Kotliar, Dan A Landau, Sachet A Shukla, Jon C Aster, Robin Reed, David S DeLuca, Jennifer R Brown, Donna Neuberg, Gad Getz, Kenneth J Livak, Matthew M Meyerson, Peter V Kharchenko, Catherine J Wu
Mutations in SF3B1, which encodes a spliceosome component, are associated with poor outcome in chronic lymphocytic leukemia (CLL), but how these contribute to CLL progression remains poorly understood. We undertook a transcriptomic characterization of primary human CLL cells to identify transcripts and pathways affected by SF3B1 mutation. Splicing alterations, identified in the analysis of bulk cells, were confirmed in single SF3B1-mutated CLL cells and also found in cell lines ectopically expressing mutant SF3B1...
November 14, 2016: Cancer Cell
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