Epigenetic changes of Raji Epstein–Barr viral genome in reponse to byrostatin treatment
Ontology highlight
ABSTRACT: We report the application of cut&tag technology for high-throughput profiling of histone modifications Raji Epstein–Barr viral genome in reponse to bryostatin treatment. Dual- and tri-methylation of lysine 4 on histone H3 protein indicate genes that are actively expressed/regulated. Tri-methylation of lysine 27 on histone H3 protein marks genes that are negatively regulated or suppressed for expression.
Project description:We report the application of cut&tag technology for high-throughput profiling of histone modifications in leuemia cells in reponse to bryostatin treatment. We generated genome-wide chromatin-state landscape of NALM6, REH and Raji cells. Dual- and tri-methylation of lysine 4 on histone H3 protein indicate genes that are actively expressed/regulated. Tri-methylation of lysine 27 on histone H3 protein marks genes that are negatively regulated or suppressed for expressiom. We compared differential peaks for cells treated with or without bryostatin to demonstrate genes responding to bryostatin treatment on epigenetic level.
Project description:To investigate bryostain's effect on Raji , we performed a whole-transcriptome RNA sequencing experiment for Raji cells treated with Bryostatin and established differntial expression profile comparing to raji treated with DMSO.
Project description:To disclose the epigenetic drift of time passing, we determined the genome-wide distributions of mono- and tri-methylated lysine 4 and acetylated and tri-methylated lysine 27 of histone H3 in the livers of healthy 3, 6 and 12 months old C57BL/6 mice. The comparison of different age profiles of histone H3 marks revealed global redistribution of histone H3 modifications with time, in particular in intergenic regions and near transcription start sites, as well as altered correlation between the profiles of different histone modifications. Moreover, feeding mice with caloric restriction diet, a treatment known to retard aging, preserved younger state of histone H3 in these genomic regions.
Project description:Expression of the TM4SF member CD9 on the human Burkitts lymphoma cell line Raji induced increased cell proliferation, motilty and adhesion to fibronectin. CD9 promoted increases in Raji cell proliferation was dependent upon histone deacetyalase (HDAC) activity as treatment with HDAC inhibitors trichostain A or cucurmin attenuated CD9 mediated increases in Raji cell proliferation. Gene expression of Raji cells stably expressing human CD9 via transfection with expression vector PRVCMVCD9 was compared with corresponding Mock transfected cell by microarray analysis using the Affymetrix U133 2.0 platform.
Project description:Genome-wide distribtuion of histone H3 and H3K27me3 (histone H3 tri-methylated at lysine 27) was analyzed in the wild type and the sterile mutant asf1. The asf1 gene encodes a conserved histone chaperone, and preliminary experimentes indicated changes in histone modifications in the mutant that were analyzed on a genome-wide basis in these experiments.
Project description:Expression of the TM4SF member CD9 on the human Burkitts lymphoma cell line Raji induced increased cell proliferation, motilty and adhesion to fibronectin. CD9 promoted increases in Raji cell proliferation was dependent upon histone deacetyalase (HDAC) activity as treatment with HDAC inhibitors trichostain A or cucurmin attenuated CD9 mediated increases in Raji cell proliferation. Gene expression of Raji cells stably expressing human CD9 via transfection with expression vector PRVCMVCD9 was compared with corresponding Mock transfected cell by microarray analysis using the Affymetrix U133 2.0 platform. Experiment Overall Design: Transfected Raji cells that had been in cultured in RPMI, 10% FBS in the presence of 1mg/ml G418 were harvested during exponential growth and RNA was extracted using TRiReagent according to manufacturer's protocol (Sigma).