Tyrosine 1-phosphorylated RNA polymerase II transcribes PROMPTs to facilitate proximal promoter pausing and induce global transcriptional repression in response to DNA damage
<p>DNA damage triggers a complex transcriptional response that involves both activation and repression of gene expression. In this study, we investigated global changes in transcription in response to ionizing irradiation (IR), which induces double-strand breaks in DNA. We used mNET-seq to pro...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Cold Spring Harbor Laboratory
2024
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| _version_ | 1826342868961198080 |
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| author | Ajit, K Alagia, A Burger, K Gullerova, M |
| author_facet | Ajit, K Alagia, A Burger, K Gullerova, M |
| author_sort | Ajit, K |
| collection | OXFORD |
| description | <p>DNA damage triggers a complex transcriptional response that involves both activation and repression of gene expression. In this study, we investigated global changes in transcription in response to ionizing irradiation (IR), which induces double-strand breaks in DNA. We used mNET-seq to profile nascent transcripts bound to different phosphorylated forms of the RNA polymerase II (RNA Pol II) C-terminal domain (CTD). We found that IR leads to global transcriptional repression of protein-coding genes, accompanied by an increase in antisense transcripts near promoters, called PROMPTs, transcribed by RNA Pol II phosphorylated on tyrosine 1 (Y1P) residue of the CTD. These Y1P-transcribed PROMPTs are enriched for PRC2 binding sites and associated with RNA Pol II proximal promoter pausing. We show the interaction between Y1P RNA Pol II and PRC2, as well as PRC2 binding to PROMPTs. Inhibition of PROMPTs or depletion of PRC2 leads to loss of transcriptional repression. Our results reveal a novel function of Y1P-dependent PROMPTs in mediating PRC2 recruitment to chromatin and RNA Pol II promoter pausing in response to DNA damage.</p> |
| first_indexed | 2025-03-11T23:38:07Z |
| format | Journal article |
| id | oxford-uuid:88e593e0-56aa-4d77-9615-d4c1ba48a1b1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2025-03-11T23:38:07Z |
| publishDate | 2024 |
| publisher | Cold Spring Harbor Laboratory |
| record_format | dspace |
| spelling | oxford-uuid:88e593e0-56aa-4d77-9615-d4c1ba48a1b12025-03-11T13:28:41ZTyrosine 1-phosphorylated RNA polymerase II transcribes PROMPTs to facilitate proximal promoter pausing and induce global transcriptional repression in response to DNA damageJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:88e593e0-56aa-4d77-9615-d4c1ba48a1b1EnglishSymplectic ElementsCold Spring Harbor Laboratory2024Ajit, KAlagia, ABurger, KGullerova, M<p>DNA damage triggers a complex transcriptional response that involves both activation and repression of gene expression. In this study, we investigated global changes in transcription in response to ionizing irradiation (IR), which induces double-strand breaks in DNA. We used mNET-seq to profile nascent transcripts bound to different phosphorylated forms of the RNA polymerase II (RNA Pol II) C-terminal domain (CTD). We found that IR leads to global transcriptional repression of protein-coding genes, accompanied by an increase in antisense transcripts near promoters, called PROMPTs, transcribed by RNA Pol II phosphorylated on tyrosine 1 (Y1P) residue of the CTD. These Y1P-transcribed PROMPTs are enriched for PRC2 binding sites and associated with RNA Pol II proximal promoter pausing. We show the interaction between Y1P RNA Pol II and PRC2, as well as PRC2 binding to PROMPTs. Inhibition of PROMPTs or depletion of PRC2 leads to loss of transcriptional repression. Our results reveal a novel function of Y1P-dependent PROMPTs in mediating PRC2 recruitment to chromatin and RNA Pol II promoter pausing in response to DNA damage.</p> |
| spellingShingle | Ajit, K Alagia, A Burger, K Gullerova, M Tyrosine 1-phosphorylated RNA polymerase II transcribes PROMPTs to facilitate proximal promoter pausing and induce global transcriptional repression in response to DNA damage |
| title | Tyrosine 1-phosphorylated RNA polymerase II transcribes PROMPTs to facilitate proximal promoter pausing and induce global transcriptional repression in response to DNA damage |
| title_full | Tyrosine 1-phosphorylated RNA polymerase II transcribes PROMPTs to facilitate proximal promoter pausing and induce global transcriptional repression in response to DNA damage |
| title_fullStr | Tyrosine 1-phosphorylated RNA polymerase II transcribes PROMPTs to facilitate proximal promoter pausing and induce global transcriptional repression in response to DNA damage |
| title_full_unstemmed | Tyrosine 1-phosphorylated RNA polymerase II transcribes PROMPTs to facilitate proximal promoter pausing and induce global transcriptional repression in response to DNA damage |
| title_short | Tyrosine 1-phosphorylated RNA polymerase II transcribes PROMPTs to facilitate proximal promoter pausing and induce global transcriptional repression in response to DNA damage |
| title_sort | tyrosine 1 phosphorylated rna polymerase ii transcribes prompts to facilitate proximal promoter pausing and induce global transcriptional repression in response to dna damage |
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