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Neonatal monocytes exhibit a unique histone modification landscape
Bermick JR et al.
Neonates have dampened expression of pro-inflammatory cytokines and difficulty clearing pathogens. This makes them uniquely susceptible to infections, but the factors regulating neonatal-specific immune responses are poorly understood. Epigenetics, including histone modifications, can activate or silen...
Clinical, Imaging, Histopathological and Molecular Characterization of Anaplastic Ganglioglioma
Zanello M et al.
Anaplastic ganglioglioma (AGG) is a rare and malignant variant of ganglioglioma. According to the World Health Organization classification version 2016, their histopathological grading criteria are still ill-defined. The aim of the present study was to assess the clinical, imaging, histopathological, and molecular c...
reChIP-seq reveals widespread bivalency of H3K4me3 and H3K27me3 in CD4(+) memory T cells
Kinkley S et al.
The combinatorial action of co-localizing chromatin modifications and regulators determines chromatin structure and function. However, identifying co-localizing chromatin features in a high-throughput manner remains a technical challenge. Here we describe a novel reChIP-seq approach and tailored bioinformatic analys...
Epigenetic dynamics of monocyte-to-macrophage differentiation
Wallner S et al.
Monocyte-to-macrophage differentiation involves major biochemical and structural changes. In order to elucidate the role of gene regulatory changes during this process, we used high-throughput sequencing to analyze the complete transcriptome and epigenome of human monocytes that were differentiated in...
PHF13 is a molecular reader and transcriptional co-regulator of H3K4me2/3
Chung HR et al.
PHF13 is a chromatin affiliated protein with a functional role in differentiation, cell division, DNA damage response and higher chromatin order. To gain insight into PHF13's ability to modulate these processes, we elucidate the mechanisms targeting PHF13 to chromatin, its genome wide localization and its molecular ...
Comprehensive genome and epigenome characterization of CHO cells in response to evolutionary pressures and over time
Feichtinger J, Hernández I, Fischer C, Hanscho M, Auer N, Hackl M, Jadhav V, Baumann M, Krempl PM, Schmidl C, Farlik M, Schuster M, Merkel A, Sommer A, Heath S, Rico D, Bock C, Thallinger GG, Borth N
The most striking characteristic of CHO cells is their adaptability, which enables efficient production of proteins as well as growth under a variety of culture conditions, but also results in genomic and phenotypic instability. To investigate the relative contribution of genomic and epigenetic modifications towards...
Epigenetic regulation of diacylglycerol kinase alpha promotes radiation-induced fibrosis
Weigel C. et al.
Radiotherapy is a fundamental part of cancer treatment but its use is limited by the onset of late adverse effects in the normal tissue, especially radiation-induced fibrosis. Since the molecular causes for fibrosis are largely unknown, we analyse if epigenetic regulation might explain inter-individual differences i...
Standardizing chromatin research: a simple and universal method for ChIP-seq
Laura Arrigoni, Andreas S. Richter, Emily Betancourt, Kerstin Bruder, Sarah Diehl, Thomas Manke and Ulrike Bönisch
Here we demonstrate that harmonization of ChIP-seq workflows across cell types and conditions is possible when obtaining chromatin from properly isolated nuclei. We established an ultrasound-based nuclei extraction method (Nuclei Extraction by Sonication) that is highly effective across various organisms, cell ...
The homeoprotein DLX3 and tumor suppressor p53 co-regulate cell cycle progression and squamous tumor growth
Palazzo E et al.
Epidermal homeostasis depends on the coordinated control of keratinocyte cell cycle. Differentiation and the alteration of this balance can result in neoplastic development. Here we report on a novel DLX3-dependent network that constrains epidermal hyperplasia and squamous tumorigenesis. By integrating genetic and t...
Reinforcement of STAT3 activity reprogrammes human embryonic stem cells to naive-like pluripotency.
Chen H, Aksoy I, Gonnot F, Osteil P, Aubry M, Hamela C, Rognard C, Hochard A, Voisin S, Fontaine E, Mure M, Afanassieff M, Cleroux E, Guibert S, Chen J, Vallot C, Acloque H, Genthon C, Donnadieu C, De Vos J, Sanlaville D, Guérin JF, Weber M, Stanton LW, R
Leukemia inhibitory factor (LIF)/STAT3 signalling is a hallmark of naive pluripotency in rodent pluripotent stem cells (PSCs), whereas fibroblast growth factor (FGF)-2 and activin/nodal signalling is required to sustain self-renewal of human PSCs in a condition referred to as the primed state. It is unknown why LIF/...
A lncRNA regulates alternative splicing via establishment of a splicing-specific chromatin signature.
Gonzalez I, Munita R, Agirre E, Dittmer TA, Gysling K, Misteli T, Luco RF
Alternative pre-mRNA splicing is a highly cell type-specific process essential to generating protein diversity. However, the mechanisms responsible for the establishment and maintenance of heritable cell-specific alternative-splicing programs are poorly understood. Recent observations point to a role of histone modi...
A cohesin-OCT4 complex mediates Sox enhancers to prime an early embryonic lineage.
Abboud N, Moore-Morris T, Hiriart E, Yang H, Bezerra H, Gualazzi MG, Stefanovic S, Guénantin AC, Evans SM, Pucéat M
Short- and long-scales intra- and inter-chromosomal interactions are linked to gene transcription, but the molecular events underlying these structures and how they affect cell fate decision during embryonic development are poorly understood. One of the first embryonic cell fate decisions (that is, mesendoderm deter...
Epigenome mapping reveals distinct modes of gene regulation and widespread enhancer reprogramming by the oncogenic fusion protein EWS-FLI1.
Tomazou EM, Sheffield NC, Schmidl C, Schuster M, Schönegger A, Datlinger P, Kubicek S, Bock C, Kovar H
Transcription factor fusion proteins can transform cells by inducing global changes of the transcriptome, often creating a state of oncogene addiction. Here, we investigate the role of epigenetic mechanisms in this process, focusing on Ewing sarcoma cells that are dependent on the EWS-FLI1 fusion protein. We establi...
Global effects of the CSR-1 RNA interference pathway on the transcriptional landscape.
Cecere G, Hoersch S, O'Keeffe S, Sachidanandam R, Grishok A
Argonaute proteins and their small RNA cofactors short interfering RNAs are known to inhibit gene expression at the transcriptional and post-transcriptional levels. In Caenorhabditis elegans, the Argonaute CSR-1 binds thousands of endogenous siRNAs (endo-siRNAs) that are antisense to germline transcripts. However, i...