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Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation [WGBS]

ABSTRACT: Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation [WGBS]

PROVIDER: PRJNA1045262 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26949323_1.fastq.gz	Fastqsanger.gz
	SRR26949323_2.fastq.gz	Fastqsanger.gz
	SRR26949324_1.fastq.gz	Fastqsanger.gz
	SRR26949324_2.fastq.gz	Fastqsanger.gz
	SRR26949325_1.fastq.gz	Fastqsanger.gz

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Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation [WGBS]

Project description:UHRF1 is an epigenetic regulator that plays critical roles in tumours. However, the DNA methylation alteration patterns driven by UHRF1 and the related differentially expressed tumour-related genes remain unclear. In this study, a UHRF1-shRNA MCF-7 cell line was constructed, and whole-genome bisulfite sequencing (WGBS) and RNA sequencing were performed. The DNA methylation alteration landscape was elucidated, and DNA methylation-altered regions (DMRs) were found to be distributed in both gene bodies and adjacent regions. The DMRs were annotated and categorized into 488 hypermethylated/1696 hypomethylated promoters and 1149 hypermethylated/5501 hypomethylated gene bodies. Through an integrated analysis with the RNA sequencing data, 217 upregulated methylated genes and 288 downregulated methylated genes were identified, and these genes were primarily enriched in nervous system development and cancer signalling pathways.

2024-05-09 | GSE248621 | GEO

Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation [RNA-Seq]

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Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation

Project description:Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation

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Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation [RNA-Seq]

Project description:Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation [RNA-Seq]

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Identification of differentially expressed tumour-related genes regulated by UHRF1 regulated DNA methylation

Project description:This SuperSeries is composed of the SubSeries listed below.

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Gene expression profiles of uhrf1 mutant zebrafish

Project description:UHRF1 (Ubiquitin-like, containing PHD and RING finger domains, 1) recruits DNMT1 to hemimethylated DNA during replication, is essential for maintaining DNA methylation patterns during cell division and is suggested to direct additional repressive epigenetic marks. Uhrf1 mutation in zebrafish results in multiple embryonic defects including failed hepatic outgrowth, but the epigenetic basis of these phenotypes is not known. We find that DNA methylation is the only epigenetic mark that is depleted in uhrf1 mutants and make the surprising finding that despite the reduced organ size in uhrf1 mutants, genes regulating DNA replication and S-phase progression were highly upregulated. Further, there is a striking increase in BrdU incorporation in uhrf1 mutant cells, and they retained BrdU labeling over several days, indicating they are arrested in S-phase. Moreover, some of the label retaining nuclei co-localized with TUNEL positive nuclei, suggesting that arrested cells are responsible for apoptosis. Importantly, dnmt1 mutation phenocopies the S-phase arrest and hepatic outgrowth defects in uhrf1 mutants and Dnmt1 knock-down enhances the uhrf1 hepatic phenotype. Together, these data indicate that DNA hypomethylation is sufficient to generate the uhrf1 mutant phenotype by promoting an S-phase arrest. We thus propose that cell cycle arrest is a mechanism to restrict propagation of epigenetically deranged cells during embryogenesis. Genome-wide expression profiling was performed on 2 uhrf1 mutant and 2 wildtype zebrafish larvae (120 hours post fertilization) by using Zebrafish Genome Array (Affymetrix) according to manufacturer's instruction.

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Identificaiton of novel acetylation sites in UHRF1 mediated by acetyltransferase MOF

Project description:The multi-domain protein UHRF1 (ubiquitin-like, containing PHD and RING finger domains, 1) recruits DNMT1 for DNA methylation maintenance during DNA replication. Here, we show that MOF (Males absent On the First) is an acetyltransferase of UHRF1 to acetylate UHRF1 at Lys670 in the pre-RING linker region whereas HDAC1 is a deacetylase of UHRF1 at the same site. The MOF/HDAC1-mediated acetylation in UHRF1 is cell-cycle regulated and peaks at G1/S phase, in line with the function of UHRF1 in recruiting DNMT1 to maintain DNA methylation. In addition, UHRF1 acetylation significantly enhances its E3 ligase activity and elimination of UHRF1 acetylation at these sites attenuates UHRF1-mediated H3 ubiquitination, which in turn impairs the DNMT1 recruitment and DNA methylation. Taken together, these findings not only identify MOF as a new acetyltransferase for UHRF1 but also reveal a novel mechanism underlying the regulation of DNA methylation maintenance through MOF-mediated UHRF1 acetylation.

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PHD finger recognition of unmodified histone H3R2 links UHRF1 to regulation of euchromatic gene expression

Project description:Histone methylation occurs on both lysine and arginine residues and its dynamic regulation plays a critical role in chromatin biology. Here we identify the UHRF1 PHD domain (PHDUHRF1), an important regulator of DNA CpG methylation, as an unanticipated histone H3 unmodified arginine 2 (H3R2)-recognition modality. This conclusion is based on binding studies and co-crystal structures of the PHDUHRF1 bound to histone H3 peptides, where the guanidinium group of unmodified R2 forms an extensive intermolecular hydrogen bond network, with methylation of H3R2, but not H3K4 or H3K9, disrupting complex formation. We have identified direct target genes of UHRF1 from microarray and ChIP studies. Importantly, we show that UHRF1’s ability to repress its direct target gene expression is dependent on PHDUHRF1 binding to unmodified H3R2, thereby demonstrating the functional importance of this recognition event and supporting the potential for crosstalk between histone arginine methylation and UHRF1 function. UHRF1 protein was depleted in HCT116 cells by shRNA treatment. Total RNA was purified and used to determine the global gene transcription profiles by microarray assays. The UHRF1-regulated genes were identified by comparing the gene expression profiles of control and UHRF1-depleted HCT116 cells.

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Glioblastoma epigenome profiling identifies SOX10 as a master regulator of molecular tumour subtype - tumour methylation (WGBS) data

Project description:Glioblastoma epigenome profiling identifies SOX10 as a master regulator of molecular tumour subtype - tumour methylation (WGBS) data

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Expression data from HeLa cell lines stably expressing shRNA targeting ctrl or UHRF1

Project description:We used microarrays to explore the expression profile from cells expressing wild type and UHRF1 S674A mutant. HeLa cells expressing UHRF1 WT and S674A mutant showed similar gene expression pattern without significant affecting the transcription of DNA repari genes. UHRF1 was depleted in HeLa cells by shRNA treatment. Total RNA was purified and used to determine the global gene transcription profiles by microarray assays. The UHRF1-related genes expression profiles were compared among control cells, UHRF1-depleted cells, UHRF1 WT reconstituting cells and UHRF1 S674A mutant reconstituting cells.

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