Genome-wide DNA methylation reprogramming in response to inorganic arsenic links inhibition of CTCF binding, DNMT expression and cellular transformation

M Rea, M Eckstein, R Eleazer, C Smith… - Scientific reports, 2017 - nature.com
Chronic low dose inorganic arsenic (iAs) exposure leads to changes in gene expression
and epithelial-to-mesenchymal transformation. During this transformation, cells adopt a …

[HTML][HTML] Transient and permanent changes in DNA methylation patterns in inorganic arsenic-mediated epithelial-to-mesenchymal transition

M Eckstein, M Rea, YN Fondufe-Mittendorf - Toxicology and applied …, 2017 - Elsevier
Chronic low dose inorganic arsenic exposure causes cells to take on an epithelial-to-
mesenchymal phenotype, which is a crucial process in carcinogenesis. Inorganic arsenic is …

[HTML][HTML] Selective inhibition of CTCF binding by iAs directs TET-mediated reprogramming of 5-hydroxymethylation patterns in iAs-transformed cells

M Rea, T Gripshover, Y Fondufe-Mittendorf - Toxicology and applied …, 2018 - Elsevier
Methylation at cytosine (5mC) is a fundamental epigenetic DNA modification recently
associated with iAs-mediated carcinogenesis. In contrast, the role of 5 …

Inorganic Arsenic-induced cellular transformation is coupled with genome wide changes in chromatin structure, transcriptome and splicing patterns

C Riedmann, Y Ma, M Melikishvili, SG Godfrey… - BMC genomics, 2015 - Springer
Abstract Background Arsenic (As) exposure is a significant worldwide environmental health
concern. Low dose, chronic arsenic exposure has been associated with a higher than …

CTCF loss mediates unique DNA hypermethylation landscapes in human cancers

NA Damaschke, J Gawdzik, M Avilla, B Yang… - Clinical …, 2020 - Springer
Background The chromatin insulator CCCTC-binding factor (CTCF) displays tissue-specific
DNA binding sites that regulate transcription and chromatin organization. Despite evidence …

Dysregulation of DNA methylation induced by past arsenic treatment causes persistent genomic instability in mammalian cells

M Mauro, F Caradonna, CB Klein - … and molecular mutagenesis, 2016 - Wiley Online Library
The mechanisms by which arsenic‐induced genomic instability is initiated and maintained
are poorly understood. To investigate potential epigenetic mechanisms, in this study we …

[HTML][HTML] DNA methylation regulates alternative polyadenylation via CTCF and the cohesin complex

V Nanavaty, EW Abrash, C Hong, S Park, EE Fink, Z Li… - Molecular cell, 2020 - cell.com
Dysregulation of DNA methylation and mRNA alternative cleavage and polyadenylation
(APA) are both prevalent in cancer and have been studied as independent processes. We …

Unraveling the functional role of DNA demethylation at specific promoters by targeted steric blockage of DNA methyltransferase with CRISPR/dCas9

DM Sapozhnikov, M Szyf - Nature Communications, 2021 - nature.com
Despite four decades of research to support the association between DNA methylation and
gene expression, the causality of this relationship remains unresolved. Here, we reaffirm that …

A genome-scale map of DNA methylation turnover identifies site-specific dependencies of DNMT and TET activity

PA Ginno, D Gaidatzis, A Feldmann, L Hoerner… - Nature …, 2020 - nature.com
DNA methylation is considered a stable epigenetic mark, yet methylation patterns can vary
during differentiation and in diseases such as cancer. Local levels of DNA methylation result …

Editing DNA methylation in the mammalian genome

XS Liu, H Wu, X Ji, Y Stelzer, X Wu, S Czauderna… - Cell, 2016 - cell.com
Mammalian DNA methylation is a critical epigenetic mechanism orchestrating gene
expression networks in many biological processes. However, investigation of the functions …