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Role of rsc2 in nucleotide excision repair in yeast

ABSTRACT: Role of rsc2 in nucleotide excision repair in yeast

PROVIDER: PRJNA707042 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13866596.fastq.gz	Fastqsanger.gz
	SRR13866597.fastq.gz	Fastqsanger.gz
	SRR13866598.fastq.gz	Fastqsanger.gz

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Role of rsc2 in nucleotide excision repair in yeast

Project description:Nucleosomes are a significant barrier to the repair of UV damage because they impede damage recognition by nucleotide excision repair (NER). The RSC chromatin remodeler functions in cells to promote DNA access by moving or evicting nucleosomes and has been linked to NER in yeast. Here, we report genome-wide repair maps of UV-induced cyclobutane pyrimidine dimers (CPDs) in yeast cells lacking Rsc2.

2021-04-12 | GSE168369 | GEO

Role of H3K36 methylation in regulating transcription coupled-nucleotide excision repair

Project description:We characterized the role of H3K36 methylation in regulating repair of UV damage from the transcribed strand (TS) of yeast genes by the transcription coupled nucleotide excision repair (TC-NER) pathway. TC-NER is triggered when RNA polymerase stalls at UV damage, such as a UV-induced cyclobutane pyrimidine dimer (CPD). During transcription, the histone methyltransferase Set2 methylates histone H3K36, but it is not known if H3K36 methylation regulates TC-NER. Here, we report genome-wide repair maps of UV-induced cyclobutane pyrimidine dimers (CPDs) in yeast cells containing mutants in histone H3K36 (or set2).

2022-02-21 | GSE194101 | GEO

Role of Set2 in regulating transcription coupled-nucleotide excision repair

Project description:Repair of UV damage from the transcribed strand (TS) of yeast genes is rapid due to the transcription coupled nucleotide excision repair (TC-NER) pathway. TC-NER is triggered when RNA polymerase stalls at UV damage, such as a UV-induced cyclobutane pyrimidine dimer (CPD). During transcription, the histone methyltransferase Set2 methylates histone H3K36, but it is not known if Set2 regulates TC-NER. Here, we report genome-wide repair maps of UV-induced cyclobutane pyrimidine dimers (CPDs) in yeast cells lacking Set2.

2022-02-21 | GSE179794 | GEO

Role of Set2 in regulating transcription coupled-nucleotide excision repair

Project description:Role of Set2 in regulating transcription coupled-nucleotide excision repair

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Distinct roles for ATP-dependent chromatin remodeling enzymes in nucleotide excision repair in yeast

Project description:Nucleosomes are a significant barrier to the repair of UV damage because they impede damage recognition by nucleotide excision repair (NER). The RSC and SWI/SNF chromatin remodelers function in cells to promote DNA access by moving or evicting nucleosomes and both have been linked to NER in yeast. Here, we report genome-wide repair maps of UV-induced cyclobutane pyrimidine dimers (CPDs) in yeast cells lacking RSC or SWI/SNF activity. Our data indicate that SWI/SNF is not generally required for NER, but instead promotes repair of CPD lesions at specific yeast genes. In contrast, mutation or depletion of RSC subunits causes a general defect in NER across the yeast genome. Our data indicate that RSC is required for repair not only in nucleosomal DNA, but also neighboring linker DNA and nucleosome-free regions (NFRs). Furthermore, our data indicate that RSC plays a direct role in transcription coupled-NER (TC-NER) of transcribed DNA. These findings help to define the specific genomic and chromatin contexts in which each chromatin remodeler functions in DNA repair, and indicate that RSC plays a unique function in facilitating repair by both NER subpathways.

2021-04-12 | GSE161930 | GEO

Role of H3K36 methylation in regulating transcription coupled-nucleotide excision repair

Project description:Role of H3K36 methylation in regulating transcription coupled-nucleotide excision repair

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Transcriptional analysis of nucleotide excision repair defects

Project description:Transcriptional analysis of nucleotide excision repair defects

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Genome-wide repair maps of nucleotide excision repair in Drosophila and S2 cells.

Project description:We report the application of single-molecule-based sequencing technology (XR-seq) for high-throughput profiling of nucleotide excision repair in Drosophila four developmental stages and S2 cells. By obtaining over six billion bases of sequence from UV and cisplatin damage antibodies immunoprecipitated excision DNA, we generated genome-wide nucleotide excision repair maps of Drosophila Embryo, Larva, Pupa , two gender of adults and S2 cells . We find that Drosophila performs transcription-coupled repair (TCR) at all its developmental stages. S2 cell carry out TCR response to both UV and Cisplatin damage. Finally, we show that XPC repair factor is required for both global and transcription-coupled repair in Drosophila. This study provides the mechanism of nucleotide excision repair of Drosophila in vivo and vitro response to UV and Cisplatin damage.

2022-02-25 | GSE184926 | GEO

Targeting Germline and Tumor Associated Nucleotide Excision Repair Defects in Cancer

Project description:Genetic alterations in members of the nucleotide excision repair (NER) pathway are present in a wide spectrum of cancers, but specific treatment options for this patient population are scarce. Here, we show occurrence of putative damaging germline and somatic alterations in NER genes in up to 10% of patients within certain cancer types across a large set of cancers and explored the potential therapeutic role of irofulven for patients with hypomorphic mutations in nucleotide excision repair genes. Gene-edited isogenic pairs of wildtype and mutant ERCC2 or ERCC3 cell lines were used to assess response to irofulven. Both in vitro and in vivo studies showed significantly enhanced irofulven sensitivity in cells harboring specific clinically observed heterozygous mutations in ERCC2 or ERCC3. Sensitivity of NER mutants to irofulven was greater than to the current standard of care agent cisplatin. Hypomorphic ERCC2/3 mutant cells had an impaired ability to repair irofulven induced DNA damage. Transcriptomic profiling of the tumor tissues suggested co-dependencies between DNA repair pathways, indicating a potential benefit of combination therapies, which were confirmed by in vitro studies. The present study provides a molecularly targeted, pre-clinical approach to cancers with mutations in nucleotide excision repair pathway genes, demonstrating preferential sensitivity to the drug irofulven alone, or in combination with other agents.

2020-06-01 | GSE144761 | GEO

Nucleotide excision repair capacity increases during differentiation of human embryonic carcinoma cells into neurons and muscle cells

Project description:Embryonic stem cells can self-renew and differentiate, holding great promise for regenerative medicine. They also employ multiple mechanisms to preserve the integrity of their genomes. Nucleotide excision repair, a versatile repair mechanism, removes bulky DNA adducts from the genome. However, the dynamics of the capacity of nucleotide excision repair during stem cell differentiation remain unclear. Here, using immunoslot blot assay, we measured repair rates of UV-induced DNA damage during differentiation of human embryonic carcinoma (NTERA-2) cells into neurons and muscle cells. Our results revealed that the capacity of nucleotide excision repair increases as cell differentiation progresses. We also found that inhibition of the apoptotic signaling pathway has no effect on nucleotide excision repair capacity. Furthermore, RNA-seq-based transcriptomic analysis indicated that expression levels of four core repair factors, xeroderma pigmentosum (XP) complementation group A (XPA), XPC, XPG, and XPF-ERCC1, are progressively up-regulated during differentiation, but not those of replication protein A (RPA) and transcription factor IIH (TFIIH). Together, our findings reveal that increase of nucleotide excision repair capacity accompanies cell differentiation, supported by the up-regulated transcription of genes encoding DNA repair enzymes during differentiation of two distinct cell lineages.

2019-03-07 | GSE125370 | GEO

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