Results 61 to 70 of about 154,259 (119)

Multisite Population Epigenetic Model of Passive Demethylation [PDF]

open access: yesarXiv, 2012
The methylation of DNA regulates gene expression. On cell division the methylation state of the DNA is typically inherited from parent to daughter cells. While the chemical bond between the methyl group and the DNA is very strong, changes to the methylation state do occur and are observed to occur rapidly in response to external stimulus.
arxiv  

Systematically Dissecting the Global Mechanism of miRNA Functions in Pluripotent Stem Cells [PDF]

open access: yesarXiv, 2012
MicroRNAs (miRNAs) critically modulate stem cell properties like pluripotency, but the fundamental mechanism remains largely unknown. This study systematically analyzes multiple-omics data and builds a systems physical network including genome-wide interactions between miRNAs and their targets to reveal the systems mechanism of miRNA functions in mouse
arxiv  

A Statistical Approach to Identifying Significant Transgenerational Methylation Changes [PDF]

open access: yesarXiv, 2014
Epigenetic aberrations have profound effects on phenotypic output. Genome wide methylation alterations are inheritable to pass down the aberrations through multiple generations. We developed a statistical method, Genome-wide Identification of Significant Methylation Alteration, GISAIM, to study the significant transgenerational methylation changes ...
arxiv  

A comparative analysis of DNA methylation in diploid and tetraploid apple (Malus × domestica Borkh.)

open access: yesCzech Journal of Genetics and Plant Breeding, 2017
DNA methylation is one of the major epigenetic modifications. It is very important to the regulation of gene expression. Methylation-sensitive amplification polymorphism (MSAP) profiling was applied to a diploid apple cultivar and its derived ...
Ping HE   +4 more
doaj   +1 more source

A histone H3K9M mutation traps histone methyltransferase Clr4 to prevent heterochromatin spreading

open access: yeseLife, 2016
Histone lysine-to-methionine (K-to-M) mutations are associated with multiple cancers, and they function in a dominant fashion to block the methylation of corresponding lysines on wild type histones. However, their mechanisms of function are controversial.
Chun-Min Shan   +10 more
doaj   +1 more source

DNA methylation variation in Arabidopsis has a genetic basis and shows evidence of local adaptation [PDF]

open access: yesarXiv, 2014
Epigenome modulation in response to the environment potentially provides a mechanism for organisms to adapt, both within and between generations. However, neither the extent to which this occurs, nor the molecular mechanisms involved are known. Here we investigate DNA methylation variation in Swedish Arabidopsis thaliana accessions grown at two ...
arxiv  

Parallel evolution of methyltransferases leads to vobasine biosynthesis in Tabernaemontana elegans and Catharanthus roseus

open access: yesFrontiers in Plant Science
Monoterpenoid indole alkaloids (MIA) are one of the largest and most complex alkaloid class in nature, boasting many clinically significant drugs such as anticancer vinblastine and antiarrhythmic ajmaline.
Maisha Farzana   +6 more
doaj   +1 more source

Robust transfer regression with corrupted labels [PDF]

open access: yesarXiv
In this paper, we introduce a robust transfer regression method designed to handle corrupted labels in target data, under the scenarios that the corruption affects a substantial portion of the labels and the locations of these corruptions are unknown.
arxiv  

Comparative Analysis of 2D and 3D ResNet Architectures for IDH and MGMT Mutation Detection in Glioma Patients [PDF]

open access: yesarXiv
Gliomas are the most common cause of mortality among primary brain tumors. Molecular markers, including Isocitrate Dehydrogenase (IDH) and O[6]-methylguanine-DNA methyltransferase (MGMT) influence treatment responses and prognosis. Deep learning (DL) models may provide a non-invasive method for predicting the status of these molecular markers.
arxiv  

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