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Frontiers in Genetics

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https://www.readbyqxmd.com/read/28435435/corrigendum-simplified-assay-for-epigenetic-age-estimation-in-whole-blood-of-adults
#1
Laura Vidal-Bralo, Yolanda Lopez-Golan, Antonio Gonzalez
[This corrects the article on p. 126 in vol. 7, PMID: 27471517.].
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28424732/evidence-for-loss-in-identity-de-differentiation-and-trans-differentiation-of-islet-%C3%AE-cells-in-type-2-diabetes
#2
REVIEW
Chad S Hunter, Roland W Stein
The two main types of diabetes mellitus have distinct etiologies, yet a similar outcome: loss of islet β-cell function that is solely responsible for the secretion of the insulin hormone to reduce elevated plasma glucose toward euglycemic levels. Type 1 diabetes (T1D) has traditionally been characterized by autoimmune-mediated β-cell death leading to insulin-dependence, whereas type 2 diabetes (T2D) has hallmarks of peripheral insulin resistance, β-cell dysfunction, and cell death. However, a growing body of evidence suggests that, especially during T2D, key components of β-cell failure involves: (1) loss of cell identity, specifically proteins associated with mature cell function (e...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28421107/sexual-dimorphism-of-mirnas-secreted-by-bovine-in-vitro-produced-embryos
#3
Nicole Gross, Jenna Kropp, Hasan Khatib
Sexual dimorphism of bovine blastocysts has previously been observed through differences in development, cell death, metabolism, telomere length, DNA methylation, and transcriptomics. However, dimorphism in the secretion of miRNAs to culture media has not yet been evaluated. The objectives of this study were to determine if sex-specific blastocyst miRNA secretion occurs and to further investigate the role these miRNAs may have in the interaction between a blastocyst and the maternal environment. In vitro embryo culture was performed and media from male and female blastocysts was collected into sex-specific pools...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28408918/cftr-gene-mutations-in-the-egyptian-population-current-and-future-insights-for-genetic-screening-strategy
#4
Ayman S El-Seedy, Hanaa Shafiek, Alain Kitzis, Véronique Ladevèze
No abstract text is available yet for this article.
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28400788/the-lin28-let-7-pathway-in-cancer
#5
REVIEW
Julien Balzeau, Miriam R Menezes, Siyu Cao, John P Hagan
Among all tumor suppressor microRNAs, reduced let-7 expression occurs most frequently in cancer and typically correlates with poor prognosis. Activation of either LIN28A or LIN28B, two highly related RNA binding proteins (RBPs) and proto-oncogenes, is responsible for the global post-transcriptional downregulation of the let-7 microRNA family observed in many cancers. Specifically, LIN28A binds the terminal loop of precursor let-7 and recruits the Terminal Uridylyl Transferase (TUTase) ZCCHC11 that polyuridylates pre-let-7, thereby blocking microRNA biogenesis and tumor suppressor function...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28396681/evolution-of-nucleotide-punctuation-marks-from-structural-to-linear-signals
#6
Nawal El Houmami, Hervé Seligmann
We present an evolutionary hypothesis assuming that signals marking nucleotide synthesis (DNA replication and RNA transcription) evolved from multi- to unidimensional structures, and were carried over from transcription to translation. This evolutionary scenario presumes that signals combining secondary and primary nucleotide structures are evolutionary transitions. Mitochondrial replication initiation fits this scenario. Some observations reported in the literature corroborate that several signals for nucleotide synthesis function in translation, and vice versa...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28377786/unveiling-the-impact-of-the-genomic-architecture-on-the-evolution-of-vertebrate-micrornas
#7
REVIEW
Gustavo S França, Ludwig C Hinske, Pedro A F Galante, Maria D Vibranovski
Eukaryotic genomes frequently exhibit interdependency between transcriptional units, as evidenced by regions of high gene density. It is well recognized that vertebrate microRNAs (miRNAs) are usually embedded in those regions. Recent work has shown that the genomic context is of utmost importance to determine miRNA expression in time and space, thus affecting their evolutionary fates over long and short terms. Consequently, understanding the inter- and intraspecific changes on miRNA genomic architecture may bring novel insights on the basic cellular processes regulated by miRNAs, as well as phenotypic evolution and disease-related mechanisms...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28360926/commentary-a-source-of-error-computer-code-criminal-defendants-and-the-constitution
#8
Duncan A Taylor, Jo-Anne Bright, John Buckleton
No abstract text is available yet for this article.
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28360925/jmjd6-a-jmjc-dioxygenase-with-many-interaction-partners-and-pleiotropic-functions
#9
REVIEW
Janice Kwok, Marie O'Shea, David A Hume, Andreas Lengeling
Lysyl hydroxylation and arginyl demethylation are post-translational events that are important for many cellular processes. The jumonji domain containing protein 6 (JMJD6) has been reported to catalyze both lysyl hydroxylation and arginyl demethylation on diverse protein substrates. It also interacts directly with RNA. This review summarizes knowledge of JMJD6 functions that have emerged in the last 15 years and considers how a single Jumonji C (JmjC) domain-containing enzyme can target so many different substrates...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28360924/molecular-genetic-influences-on-normative-and-problematic-alcohol-use-in-a-population-based-sample-of-college-students
#10
Bradley T Webb, Alexis C Edwards, Aaron R Wolen, Jessica E Salvatore, Fazil Aliev, Brien P Riley, Cuie Sun, Vernell S Williamson, James N Kitchens, Kimberly Pedersen, Amy Adkins, Megan E Cooke, Jeanne E Savage, Zoe Neale, Seung B Cho, Danielle M Dick, Kenneth S Kendler
Background: Genetic factors impact alcohol use behaviors and these factors may become increasingly evident during emerging adulthood. Examination of the effects of individual variants as well as aggregate genetic variation can clarify mechanisms underlying risk. Methods: We conducted genome-wide association studies (GWAS) in an ethnically diverse sample of college students for three quantitative outcomes including typical monthly alcohol consumption, alcohol problems, and maximum number of drinks in 24 h. Heritability based on common genetic variants (h(2)SNP) was assessed...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28348576/temporal-genetic-dynamics-of-an-experimental-biparental-field-population-of-phytophthora-capsici
#11
Maryn O Carlson, Elodie Gazave, Michael A Gore, Christine D Smart
Defining the contributions of dispersal, reproductive mode, and mating system to the population structure of a pathogenic organism is essential to estimating its evolutionary potential. After introduction of the devastating plant pathogen, Phytophthora capsici, into a grower's field, a lack of aerial spore dispersal restricts migration. Once established, coexistence of both mating types results in formation of overwintering recombinant oospores, engendering persistent pathogen populations. To mimic these conditions, in 2008, we inoculated a field with two P...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28344592/dysbindin-deficiency-modifies-the-expression-of-gaba-neuron-and-ion-permeation-transcripts-in-the-developing-hippocampus
#12
Jennifer Larimore, Stephanie A Zlatic, Miranda Arnold, Kaela S Singleton, Rebecca Cross, Hannah Rudolph, Martha V Bruegge, Andrea Sweetman, Cecilia Garza, Eli Whisnant, Victor Faundez
The neurodevelopmental factor dysbindin is required for synapse function and GABA interneuron development. Dysbindin protein levels are reduced in the hippocampus of schizophrenia patients. Mouse dysbindin genetic defects and other mouse models of neurodevelopmental disorders share defective GABAergic neurotransmission and, in several instances, a loss of parvalbumin-positive interneuron phenotypes. This suggests that mechanisms downstream of dysbindin deficiency, such as those affecting GABA interneurons, could inform pathways contributing to or ameliorating diverse neurodevelopmental disorders...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28344591/studying-the-genetics-of-resistance-to-cyhv-3-disease-using-introgression-from-feral-to-cultured-common-carp-strains
#13
Roni Tadmor-Levi, Efrat Asoulin, Gideon Hulata, Lior David
Sustainability and further development of aquaculture production are constantly challenged by outbreaks of fish diseases, which are difficult to prevent or control. Developing fish strains that are genetically resistant to a disease is a cost-effective and a sustainable solution to address this challenge. To do so, heritable genetic variation in disease resistance should be identified and combined together with other desirable production traits. Aquaculture of common carp has suffered substantial losses from the infectious disease caused by the cyprinid herpes virus type 3 (CyHV-3) virus and the global spread of outbreaks indicates that many cultured strains are susceptible...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28326099/disease-risk-assessment-using-a-voronoi-based-network-analysis-of-genes-and-variants-scores
#14
Lin Chen, Gouri Mukerjee, Ruslan Dorfman, Seyed M Moghadas
Much effort has been devoted to assess disease risk based on large-scale protein-protein network and genotype-phenotype associations. However, the challenge of risk prediction for complex diseases remains unaddressed. Here, we propose a framework to quantify the risk based on a Voronoi tessellation network analysis, taking into account the disease association scores of both genes and variants. By integrating ClinVar, SNPnexus, and DISEASES databases, we introduce a gene-variant map that is based on the pairwise disease-associated gene-variant scores...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28326098/nuclear-actin-in-development-and-transcriptional-reprogramming
#15
REVIEW
Shinji Misu, Marina Takebayashi, Kei Miyamoto
Actin is a highly abundant protein in eukaryotic cells and dynamically changes its polymerized states with the help of actin-binding proteins. Its critical function as a constituent of cytoskeleton has been well-documented. Growing evidence demonstrates that actin is also present in nuclei, referred to as nuclear actin, and is involved in a number of nuclear processes, including transcriptional regulation and chromatin remodeling. The contribution of nuclear actin to transcriptional regulation can be explained by its direct interaction with transcription machineries and chromatin remodeling factors and by controlling the activities of transcription factors...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28321234/a-review-of-bioinformatics-tools-for-bio-prospecting-from-metagenomic-sequence-data
#16
REVIEW
Despoina D Roumpeka, R John Wallace, Frank Escalettes, Ian Fotheringham, Mick Watson
The microbiome can be defined as the community of microorganisms that live in a particular environment. Metagenomics is the practice of sequencing DNA from the genomes of all organisms present in a particular sample, and has become a common method for the study of microbiome population structure and function. Increasingly, researchers are finding novel genes encoded within metagenomes, many of which may be of interest to the biotechnology and pharmaceutical industries. However, such "bioprospecting" requires a suite of sophisticated bioinformatics tools to make sense of the data...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28321233/heterogeneity-of-the-pancreatic-beta-cell
#17
REVIEW
Giselle Dominguez Gutierrez, Jesper Gromada, Lori Sussel
The pancreatic beta cell functions as a key regulator of blood glucose levels by integrating a variety of signals in response to changing metabolic demands. Variations in beta cell identity that translate into functionally different subpopulations represent an interesting mechanism to allow beta cells to efficiently respond to diverse physiological and pathophysiological conditions. Recently, there is emerging evidence that morphological and functional differences between beta cells exist. Furthermore, the ability of novel single cell technologies to characterize the molecular identity of individual beta cells has created a new era in the beta cell field...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28316610/integrative-approaches-for-studying-mitochondrial-and-nuclear-genome-co-evolution-in-oxidative-phosphorylation
#18
Paul Sunnucks, Hernán E Morales, Annika M Lamb, Alexandra Pavlova, Chris Greening
In animals, interactions among gene products of mitochondrial and nuclear genomes (mitonuclear interactions) are of profound fitness, evolutionary, and ecological significance. Most fundamentally, the oxidative phosphorylation (OXPHOS) complexes responsible for cellular bioenergetics are formed by the direct interactions of 13 mitochondrial-encoded and ∼80 nuclear-encoded protein subunits in most animals. It is expected that organisms will develop genomic architecture that facilitates co-adaptation of these mitonuclear interactions and enhances biochemical efficiency of OXPHOS complexes...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28289428/inflammation-dna-damage-helicobacter-pylori-and-gastric-tumorigenesis
#19
REVIEW
Polyxeni Kalisperati, Evangelia Spanou, Ioannis S Pateras, Penelope Korkolopoulou, Anastasia Varvarigou, Ioannis Karavokyros, Vassilis G Gorgoulis, Panayiotis G Vlachoyiannopoulos, Stavros Sougioultzis
Helicobacter pylori (H. pylori) is a Gram negative bacterium that colonizes the stomach of almost half human population. It has evolved to escape immune surveillance, establishes lifelong inflammation, predisposing to genomic instability and DNA damage, notably double strand breaks. The epithelial host cell responds by activation of DNA damage repair (DDR) machinery that seems to be compromised by the infection. It is therefore now accepted that genetic damage is a major mechanism operating in cases of H. pylori induced carcinogenesis...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28270834/metabolic-stress-and-compromised-identity-of-pancreatic-beta-cells
#20
REVIEW
Avital Swisa, Benjamin Glaser, Yuval Dor
Beta cell failure is a central feature of type 2 diabetes (T2D), but the molecular underpinnings of the process remain only partly understood. It has been suggested that beta cell failure in T2D involves massive cell death. Other studies ascribe beta cell failure to cell exhaustion, due to chronic oxidative or endoplasmic reticulum stress leading to cellular dysfunction. More recently it was proposed that beta cells in T2D may lose their differentiated identity, possibly even gaining features of other islet cell types...
2017: Frontiers in Genetics
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