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TIP60: an actor in acetylation of H3K4 and tumor development in breast cancer.
Judes G, Dubois L, Rifaï K, Idrissou M, Mishellany F, Pajon A, Besse S, Daures M, Degoul F, Bignon YJ, Penault-Llorca F, Bernard-Gallon D
AIM: The acetyltransferase TIP60 is reported to be downregulated in several cancers, in particular breast cancer, but the molecular mechanisms resulting from its alteration are still unclear. MATERIALS & METHODS: In breast tumors, H3K4ac enrichment and its link with TIP60 were evaluated by chromatin immunoprecip...
H3K4 acetylation, H3K9 acetylation and H3K27 methylation in breast tumor molecular subtypes
Judes G et al.
Here, we investigated how the St Gallen breast molecular subtypes displayed distinct histone H3 profiles.
PATIENTS & METHODS:
192 breast tumors divided into five St Gallen molecular subtypes (luminal A, luminal B HER2-, luminal B HER2+, HER2+ and basal-like) were evaluated for their histone H3 modifica...
Epigenetic Modifications with DZNep, NaBu and SAHA in Luminal and Mesenchymal-like Breast Cancer Subtype Cells
Dagdemir A et al.
Numerous studies have shown that breast cancer and epigenetic mechanisms have a very powerful interactive relation. The MCF7 cell line, representative of luminal subtype and the MDA-MB 231 cell line representative of mesenchymal-like subtype were treated respectively with a Histone Methyl Transferas...
Molecular and Epigenetic Biomarkers in Luminal Androgen Receptor: A Triple Negative Breast Cancer Subtype
Judes G et al.
Histone lysine trimethylation or acetylation can be modulated by phytoestrogen, estrogen or anti-HDAC in breast cancer cell lines.
Dagdemir A, Durif J, Ngollo M, Bignon YJ, Bernard-Gallon D
AIM: The isoflavones genistein, daidzein and equol (daidzein metabolite) have been reported to interact with epigenetic modifications, specifically hypermethylation of tumor suppressor genes. The objective of this study was to analyze and understand the mechanisms by which phytoestrogens act on chromatin in breast c...
A chromodomain switch mediated by histone H3 Lys 4 acetylation regulates heterochromatin assembly.
Xhemalce B, Kouzarides T
Chromodomain proteins (Chp1/Chp2/Swi6/Clr4) bind to methylated H3K9 (H3K9me) and regulate pericentric heterochromatin in fission yeast. Chp1 and Clr4 (H3K9-HMT), bind transcriptionally active heterochromatin, whereas Chp2/Swi6 (HP1 homologs) are recruited during the inactive state. We show that H3K4 acetylation (H3K...