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H3K23me1 is an evolutionarily conserved histone modification associated with CG DNA methylation in Arabidopsis
Trejo-Arellano M.S. et al.
Amino-terminal tails of histones are targets for diverse post-translational modifications whose combinatorial action may constitute a code that will be read and interpreted by cellular proteins to define particular transcriptional states. Here, we describe monomethylation of histone H3 lysine 23 (H3K23me1) as a hist...
Genome-wide analyses of four major histone modifications in Arabidopsis hybrids at the germinating seed stage
Zhu A. et al.
Hybrid vigour (heterosis) has been used for decades in cropping agriculture, especially in the production of maize and rice, because hybrid varieties exceed their parents in plant biomass and seed yield. The molecular basis of hybrid vigour is not fully understood. Previous studies have suggested that ...
Heterochromatic histone modifications at transposons in Xenopus tropicalis embryos
van Kruijsbergen I. et al.
Transposable elements are parasitic genomic elements that can be deleterious for host gene function and genome integrity. Heterochromatic histone modifications are involved in the repression of transposons. However, it remains unknown how these histone modifications mark different types of transposons during embryon...
Fumarate is an epigenetic modifier that elicits epithelial-to-mesenchymal transition
Sciacovelli M et al.
Mutations of the tricarboxylic acid cycle enzyme fumarate hydratase cause hereditary leiomyomatosis and renal cell cancer1. Fumarate hydratase-deficient renal cancers are highly aggressive and metastasize even when small, leading to a very poor clinical outcome2. Fumarate, a small molecule metabolite that accumulate...
Normal stroma suppresses cancer cell proliferation via mechanosensitive regulation of JMJD1a-mediated transcription
Kaukonen R et al.
Tissue homeostasis is dependent on the controlled localization of specific cell types and the correct composition of the extracellular stroma. While the role of the cancer stroma in tumour progression has been well characterized, the specific contribution of the matrix itself is unknown. Furthermore, the mechanisms ...
Parental epigenetic asymmetry of PRC2-mediated histone modifications in the Arabidopsis endosperm
Moreno-Romero J et al.
Parental genomes in the endosperm are marked by differential DNA methylation and are therefore epigenetically distinct. This epigenetic asymmetry is established in the gametes and maintained after fertilization by unknown mechanisms. In this manuscript, we have addressed the key question whether parentally inherited...
The histone demethylase JMJD2A/KDM4A links ribosomal RNA transcription to nutrients and growth factors availability
Salifou K, Ray S, Verrier L, Aguirrebengoa M, Trouche D, Panov KI, Vandromme M
The interplay between methylation and demethylation of histone lysine residues is an essential component of gene expression regulation and there is considerable interest in elucidating the roles of proteins involved. Here we report that histone demethylase KDM4A/JMJD2A, which is involved in the regulation of cell pr...
Embryonic transcription is controlled by maternally defined chromatin state
Hontelez S et al.
Histone-modifying enzymes are required for cell identity and lineage commitment, however little is known about the regulatory origins of the epigenome during embryonic development. Here we generate a comprehensive set of epigenome reference maps, which we use to determine the extent to which maternal factors shape c...
The histone demethylase enzyme KDM3A is a key estrogen receptor regulator in breast cancer.
Wade MA, Jones D, Wilson L, Stockley J, Coffey K, Robson CN, Gaughan L
Endocrine therapy has successfully been used to treat estrogen receptor (ER)-positive breast cancer, but this invariably fails with cancers becoming refractory to treatment. Emerging evidence has suggested that fluctuations in ER co-regulatory protein expression may facilitate resistance to therapy and be involved i...
Polycomb binding precedes early-life stress responsive DNA methylation at the Avp enhancer.
Murgatroyd C, Spengler D
Early-life stress (ELS) in mice causes sustained hypomethylation at the downstream Avp enhancer, subsequent overexpression of hypothalamic Avp and increased stress responsivity. The sequence of events leading to Avp enhancer methylation is presently unknown. Here, we used an embryonic stem cell-derived model of hypo...
Long range epigenetic silencing is a trans-species mechanism that results in cancer specific deregulation by overriding the chromatin domains of normal cells.
Forn M, Muñoz M, Tauriello DV, Merlos-Suárez A, Rodilla V, Bigas A, Batlle E, Jordà M, Peinado MA
DNA methylation and chromatin remodeling are frequently implicated in the silencing of genes involved in carcinogenesis. Long Range Epigenetic Silencing (LRES) is a mechanism of gene inactivation that affects multiple contiguous CpG islands and has been described in different human cancer types. However, it is unkno...
AGRONOMICS1: a new resource for Arabidopsis transcriptome profiling.
Rehrauer H, Aquino C, Gruissem W, Henz SR, Hilson P, Laubinger S, Naouar N, Patrignani A, Rombauts S, Shu H, Van de Peer Y, Vuylsteke M, Weigel D, Zeller G, Hennig L
Transcriptome profiling has become a routine tool in biology. For Arabidopsis (Arabidopsis thaliana), the Affymetrix ATH1 expression array is most commonly used, but it lacks about one-third of all annotated genes present in the reference strain. An alternative are tiling arrays, but previous designs have not allowe...