Concept

Méthylation

Publications associées (76)

In Embryonic Stem Cells, ZFP57/KAP1 Recognize a Methylated Hexanucleotide to Affect Chromatin and DNA Methylation of Imprinting Control Regions

Didier Trono, Sandra Eloise Kjeldsen, Adamantia Kapopoulou, Andrea Corsinotti, Johan Jakobsson

The maintenance of H3K9 and DNA methylation at imprinting control regions (ICRs) during early embryogenesis is key to the regulation of imprinted genes. Here, we reveal that ZFP57, its cofactor KAP1, and associated effectors bind selectively to the H3K9me3 ...

Elsevier2011

Extent and Patterns of MGMT Promoter Methylation in Glioblastoma- and Respective Glioblastoma-Derived Spheres

Purpose: Quantitative methylation-specific tests suggest that not all cells in a glioblastoma with detectable promoter methylation of the O6-methylguanine DNA methyltransferase (MGMT) gene carry a methylated MGMT allele. This observation may indicate cell ...

2011

Reference Maps of Human ES and iPS Cell Variation Enable High-Throughput Characterization of Pluripotent Cell Lines

The developmental potential of human pluripotent stem cells suggests that they can produce disease-relevant cell types for biomedical research. However, substantial variation has been reported among pluripotent cell lines, which could affect their utility ...

2011

Histone methyl transferases and demethylases; can they link metabolism and transcription?

Johan Auwerx, Kristina Schoonjans

Heritable changes to the transcriptome that are independent to changes in the genome are defined as epigenetics. DNA methylation and posttranslational modifications of histones, such as acetylation/deacetylation and methylation/demethylation of lysine resi ...

Elsevier2010

The Interplay between Cytidine Deaminases, HIV and Domesticated Genetic Parasites

"There is more virus in us than us in us". John Coffin's famous sentence illustrates that particular nucleic acid sequences related to exogenous viruses, called retrotransposons, constitute almost half of the human genome and largely exceeds the amount of ...

EPFL2010

KAP1 controls endogenous retroviruses in embryonic stem cells

Didier Trono, Daniel Constam, Jacques Rougemont, Sonia Verp, Séverine Reynard, Helen Mary Rowe, Johan Jakobsson, Pierre Maillard, Hillary Layard-Liesching

More than forty per cent of the mammalian genome is derived from retroelements, of which about one-quarter are endogenous retroviruses (ERVs). Some are still active, notably in mice the highly polymorphic early transposon (ETn)/MusD and intracisternal A-ty ...

Nature Publishing Group2010

The telomere-binding protein Tbf1 demarcates snoRNA gene promoters in Saccharomyces cerevisiae

Felix Naef, Jacques Rougemont, Enrico Guarnera

Small nucleolar RNAs (snoRNAs) play a key role in ribosomal RNA biogenesis, yet factors controlling their expression are unknown. We found that the majority of Saccharomyces snoRNA promoters display an aRCCCTaa sequence motif at the upstream border of a TA ...

Elsevier2010

Protein phosphatase 1 regulates the histone code for long-term memory

Johannes Gräff

Chromatin remodeling through histone posttranslational modifications (PTMs) and DNA methylation has recently been implicated in cognitive functions, but the mechanisms involved in such epigenetic regulation remain poorly understood. Here, we show that prot ...

Society for Neuroscience2009

Regulation of Episomal Gene Expression by KRAB/KAP1-Mediated Histone Modifications

Didier Trono, Patrick Aebischer, Isabelle Barde, Sonia Verp, Vivianne Padrun, Christopher Towne, Anna Claire Groner

KAP1 is an essential cofactor of KRAB zinc finger proteins, a family of vertebrate-specific epigenetic repressors of largely unknown functions encoded in the hundreds by the mouse and human genomes. So far, KRAB/KAP1-mediated gene regulation has been studi ...

American Society for Microbiology2009

Suv-HMTases and their impact on tumor formation and telomere regulation

Fabian Jordi

Epigenetic alterations during tumor formation and progression have become an increasingly important aspect of cancer biology. Loss of global methylation at histone H4 lysine 20, mediated by the Suv4-20 HMTases, and loss of methylation at histone H3 lysine ...

2008

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