Role of H3K36 methylation in regulating transcription coupled-nucleotide excision repair
Ontology highlight
ABSTRACT:
ORGANISM(S): Saccharomyces cerevisiae
PROVIDER: GSE194101 | GEO | 2022/02/21
REPOSITORIES: GEO
Similar Datasets
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.
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Project description:Elf1 is an important transcription elongation factor that has been implicated in transcription coupled-nucleotide excision repair (TC-NER). Here, we have used a high-throughput sequencing method known as CPD-seq to map the repair of UV-induced cyclobutane pyrimidine dimers (CPDs) at single nucleotide resolution across the yeast genome in elf1 mutant cells. Analysis of CPD repair indicates that Elf1 is important for CPD repair in the transcribed strand (TS) of yeast genes, indicating it plays an important role in TC-NER.
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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.
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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.
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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). Intriguingly, while depletion of the RSC catalytic subunit also affects base excision repair (BER) of N-methylpurine (NMP) lesions, RSC activity is less important for BER in linker DNA and 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.
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Project description:Rad16 is required for global genomic nucleotide excision repair (GG-NER) of UV-induced CPD lesions. Here we have used a novel high-throughput sequencing method known as CPD-seq to map the repair of UV-induced cyclobutane pyrimidine dimers (CPDs) at single nucleotide resolution across the yeast genome in rad16 mutant cells. Analysis of CPD repair indicates that rad16 is generally required for CPD repair in the non-transcribed strand (NTS) of yeast genes and non-transcribed genomic regions.
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Project description:Transcription-coupled nucleotide excision repair (TC-NER) is promptly triggered by 'local' elongating RNAP II molecules encountering DNA adducts such as cyclobutane pyrimidine dimers (CPD) induced by ultraviolet light and speeds up removing and repair in transcribed loci. Genome-wide measurements have revealed a dramatic shutdown of global transcription with a few exceptions of individual genes that are consequently highly upregulated by DNA damage. Deciphering the underlying mechanisms of the multifaceted transcriptional response always comprises one of the most fascinating frontiers in DNA repair research. Recent reports have revealed that persistent RNAP II initiation at the transcription start site of active regulatory regions with the continuous synthesis of start-RNAs guarantee sufficient scanning and repair of the whole transcribed genome, although transcription elongation drastically slows down shortly after genotoxic stress. Furthermore, a recent study found that RNA is extremely rapidly m6A methylated by METTL3 in response to UV irradiation which is crucial for recruitment of Pol k to DNA damage sites and subsequently mediates TC-NER. Together, these findings substantiate the molecular processes underlying the transcription-coordinated cellular response upon genotoxic stress might be more complex than previously believed. Unfortunately, all these findings merely focused on the early phase of recovery (within 4 hr after DNA damage). It remains to be determined how accessible chromatin reconfigures and regulates transcriptional programs in UV-induced DNA damage repair. It is also unclear whether the dynamics of gene expression are associated with other epigenomic reconstruction events such as global DNA methylation and demethylation. Moreover, the roles of internal messenger RNA modifications like N6-methyladenosine in TC-NER are poorly understood. Our integrative analyses provide a comprehensive view of the spatio-temporal chromatin configuration and epigenetic characterizations that accompanies TC-NER.
2020-11-20 | GSE161790 | GEO
Project description:Transcription-coupled nucleotide excision repair (TC-NER) is promptly triggered by 'local' elongating RNAP II molecules encountering DNA adducts such as cyclobutane pyrimidine dimers (CPD) induced by ultraviolet light and speeds up removing and repair in transcribed loci. Genome-wide measurements have revealed a dramatic shutdown of global transcription with a few exceptions of individual genes that are consequently highly upregulated by DNA damage. Deciphering the underlying mechanisms of the multifaceted transcriptional response always comprises one of the most fascinating frontiers in DNA repair research. Recent reports have revealed that persistent RNAP II initiation at the transcription start site of active regulatory regions with the continuous synthesis of start-RNAs guarantee sufficient scanning and repair of the whole transcribed genome, although transcription elongation drastically slows down shortly after genotoxic stress. Furthermore, a recent study found that RNA is extremely rapidly m6A methylated by METTL3 in response to UV irradiation which is crucial for recruitment of Pol k to DNA damage sites and subsequently mediates TC-NER. Together, these findings substantiate the molecular processes underlying the transcription-coordinated cellular response upon genotoxic stress might be more complex than previously believed. Unfortunately, all these findings merely focused on the early phase of recovery (within 4 hr after DNA damage). It remains to be determined how accessible chromatin reconfigures and regulates transcriptional programs in UV-induced DNA damage repair. It is also unclear whether the dynamics of gene expression are associated with other epigenomic reconstruction events such as global DNA methylation and demethylation. Moreover, the roles of internal messenger RNA modifications like N6-methyladenosine in TC-NER are poorly understood. Our integrative analyses provide a comprehensive view of the spatio-temporal chromatin configuration and epigenetic characterizations that accompanies TC-NER.
2020-11-20 | GSE161792 | GEO
Project description:Transcription-coupled nucleotide excision repair (TC-NER) is promptly triggered by 'local' elongating RNAP II molecules encountering DNA adducts such as cyclobutane pyrimidine dimers (CPD) induced by ultraviolet light and speeds up removing and repair in transcribed loci. Genome-wide measurements have revealed a dramatic shutdown of global transcription with a few exceptions of individual genes that are consequently highly upregulated by DNA damage. Deciphering the underlying mechanisms of the multifaceted transcriptional response always comprises one of the most fascinating frontiers in DNA repair research. Recent reports have revealed that persistent RNAP II initiation at the transcription start site of active regulatory regions with the continuous synthesis of start-RNAs guarantee sufficient scanning and repair of the whole transcribed genome, although transcription elongation drastically slows down shortly after genotoxic stress. Furthermore, a recent study found that RNA is extremely rapidly m6A methylated by METTL3 in response to UV irradiation which is crucial for recruitment of Pol k to DNA damage sites and subsequently mediates TC-NER. Together, these findings substantiate the molecular processes underlying the transcription-coordinated cellular response upon genotoxic stress might be more complex than previously believed. Unfortunately, all these findings merely focused on the early phase of recovery (within 4 hr after DNA damage). It remains to be determined how accessible chromatin reconfigures and regulates transcriptional programs in UV-induced DNA damage repair. It is also unclear whether the dynamics of gene expression are associated with other epigenomic reconstruction events such as global DNA methylation and demethylation. Moreover, the roles of internal messenger RNA modifications like N6-methyladenosine in TC-NER are poorly understood. Our integrative analyses provide a comprehensive view of the spatio-temporal chromatin configuration and epigenetic characterizations that accompanies TC-NER.
2020-11-20 | GSE161791 | GEO
Project description:Transcription-coupled nucleotide excision repair (TC-NER) is promptly triggered by 'local' elongating RNAP II molecules encountering DNA adducts such as cyclobutane pyrimidine dimers (CPD) induced by ultraviolet light and speeds up removing and repair in transcribed loci. Genome-wide measurements have revealed a dramatic shutdown of global transcription with a few exceptions of individual genes that are consequently highly upregulated by DNA damage. Deciphering the underlying mechanisms of the multifaceted transcriptional response always comprises one of the most fascinating frontiers in DNA repair research. Recent reports have revealed that persistent RNAP II initiation at the transcription start site of active regulatory regions with the continuous synthesis of start-RNAs guarantee sufficient scanning and repair of the whole transcribed genome, although transcription elongation drastically slows down shortly after genotoxic stress. Furthermore, a recent study found that RNA is extremely rapidly m6A methylated by METTL3 in response to UV irradiation which is crucial for recruitment of Pol k to DNA damage sites and subsequently mediates TC-NER. Together, these findings substantiate the molecular processes underlying the transcription-coordinated cellular response upon genotoxic stress might be more complex than previously believed. Unfortunately, all these findings merely focused on the early phase of recovery (within 4 hr after DNA damage). It remains to be determined how accessible chromatin reconfigures and regulates transcriptional programs in UV-induced DNA damage repair. It is also unclear whether the dynamics of gene expression are associated with other epigenomic reconstruction events such as global DNA methylation and demethylation. Moreover, the roles of internal messenger RNA modifications like N6-methyladenosine in TC-NER are poorly understood. Our integrative analyses provide a comprehensive view of the spatio-temporal chromatin configuration and epigenetic characterizations that accompanies TC-NER.
2020-11-20 | GSE161789 | GEO