RNA-seq of HSF1 phase separation in heat shock and non-heat shock cells.
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ABSTRACT:
PROVIDER: PRJNA789850 | ENA |
REPOSITORIES: ENA
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Project description:Genome-wide maps of HSF1 phase separation in heat shock and non-heat shock cells
| PRJNA791293 | ENA
Project description:HSF1 binds DNA via the DBD domain, causing gene upregulation during HS. We assessed the effect of RD-mediated phase separation on chromatin targeting of HSF1 using Cut&Tag followed by high-throughput sequencing to map genome-wide binding of LLPS-competent versus LLPS-incompetent HSF1 mutants under both HS and NHS conditions. Comparing with WT HSF1 under NHS, both WT under HS and M1 under NHS showed increased and broad binding to enhancers and distal intergenic region, with binding most enriched in expected motifs of HSF-related transcription factors. To further assess the role for IDR-induced LLPS in chromatin targeting of HSF1, we used several additional strategies. First, the treatment of 1,6-hexanediol markedly decreased chromatin occupancy both of WT under HS and M1 under NHS conditions. Second, we interrogate chromatin binding of LLPS-deficient mutant M3. Cut&Tag analysis revealed that M3 showed decreased chromatin binding compared to WT under HS and M1 under NHS. The decreased chromatin binding of M3 to chromatin was not due to the loss of its DNA binding ability, as the EMSA assay revealed that M3 was still capable of binding HSE. Instead, the decreased chromatin binding reflects the loss of inter-molecular interaction between HSF1 that holds LLPS. Furthermore, M3 in heat shocked cells shows similar reduced genomic targeting and shallow binding pattern as NHS cells . Third, the enrichment of transcriptional apparatus RNA Pol II, CYCT1, BRD4 to HSF1 target genes also depend on whether HSF1 can phase separate at these sites. Lastly, we conducted live cell single molecule imaging to evaluate chromatin binding kinetics of LLPS-deficient mutant M3 relative to WT HSF1. Measurements of single molecule displacement and diffusion coefficient showed M3 to be significantly more mobile than WT under HS, which suggests M3 was less confined within phase-separated puncta compared with LLPS-competent HSF1. Consistent with this result, super resolution imaging of M3 also showed decreased cluster formation at HSP gene foci but maintained nSBs formation. Altogether, LLPS-forming capability of HSF1 is essential for the efficient recruitment of HSF1 and transcriptional apparatus to HSP gene loci.
2021-12-24 | GSE192370 | GEO
Project description:Mouse HSF1+/+ and HSF1-/- Fibroblasts Heat Shock Time Courses Scanned on Scanner 7 (Axon 4000B) Set of arrays organized by shared biological context, such as organism, tumors types, processes, etc. Keywords: Logical Set
2005-08-05 | GSE3074 | GEO
Project description:Mouse HSF1+/+ and HSF1-/- Fibroblasts Heat Shock Time Courses Scanned on Scanner 7 (Axon 4000B)
2005-07-21 | E-SMDB-1853 | biostudies-arrayexpress
Project description:Heat shock transcription factors HSF1 and HSF2 both are necessary for proper spermatogenesis, which is disrupted at elevated temperatures. We studied how HSF1 and HSF2 cooperate during the heat shock response in mouse spermatocytes. For this purpose we used ChIP-sequencing. ChIP-Seq analyses revealed that the temperature elevation induces remodeling of HSF1 and HSF2 binding to chromatin. The highest HSF1-chromatin binding was observed at 43°C, when HSF2-chromatin binding was reduced. Many promoters (mainly Hsp genes) were occupied by both heat shock factors at physiological temperature of testes and/or at 38°C. In contrary at 43°C only HSF1 was bound. Obtained results suggest that HSF1 and HSF2 could cooperate in regulation of the transcription of some genes only at physiological temperatures and/or at 38°C. Alteration in HSFs interactions and their binding to chromatin could be one of the reason of increased spermatogenic cell death observed after heat shock.
2014-10-07 | GSE56735 | GEO
Project description:We investigated whether interfering with HSF1 LLPS affected the expression of its target genes using RNA sequencing. We found HS induced HSPs gene expression in LLPS-dependent manner. LLPS-dependent gene activation was also observed in M1 cells under NHS condition. In addition, LLPS-incompetent M3 infected cells showed less HSP gene expression even under HS condition. Thus, these data collectively support a crucial role for LLPS of HSF1 in activating HSP genes expression.
2021-12-19 | GSE191134 | GEO
Project description:Heat-Shock Factor 1 (HSF1), master regulator of the heat-shock response, facilitates malignant transformation, cancer cell survival and proliferation in model systems. The common assumption is that these effects are mediated through regulation of heat-shock protein (HSP) expression. However, the transcriptional network that HSF1 coordinates directly in malignancy and its relationship to the heat-shock response have never been defined. By comparing cells with high and low malignant potential alongside their non-transformed counterparts, we identify an HSF1-regulated transcriptional program specific to highly malignant cells and distinct from heat shock. Cancer-specific genes in this program support oncogenic processes: cell-cycle regulation, signaling, metabolism, adhesion and translation. HSP genes are integral to this program, however, even these genes are uniquely regulated in malignancy. This HSF1 cancer program is active in breast, colon and lung tumors isolated directly from human patients and is strongly associated with metastasis and death. Thus, HSF1 rewires the transcriptome in tumorigenesis, with prognostic and therapeutic implications.
2012-08-07 | GSE38901 | GEO
Project description:Heat-Shock Factor 1 (HSF1), master regulator of the heat-shock response, facilitates malignant transformation, cancer cell survival and proliferation in model systems. The common assumption is that these effects are mediated through regulation of heat-shock protein (HSP) expression. However, the transcriptional network that HSF1 coordinates directly in malignancy and its relationship to the heat-shock response have never been defined. By comparing cells with high and low malignant potential alongside their non-transformed counterparts, we identify an HSF1-regulated transcriptional program specific to highly malignant cells and distinct from heat shock. Cancer-specific genes in this program support oncogenic processes: cell-cycle regulation, signaling, metabolism, adhesion and translation. HSP genes are integral to this program, however, even these genes are uniquely regulated in malignancy. This HSF1 cancer program is active in breast, colon and lung tumors isolated directly from human patients and is strongly associated with metastasis and death. Thus, HSF1 rewires the transcriptome in tumorigenesis, with prognostic and therapeutic implications.
2012-08-07 | GSE38232 | GEO
Project description:Heat shock transcription factors HSF1 and HSF2 both are necessary for proper spermatogenesis, which is disrupted at elevated temperatures. We studied how HSF1 and HSF2 cooperate during the heat shock response in mouse spermatocytes. For this purpose we used ChIP-sequencing. ChIP-Seq analyses revealed that the temperature elevation induces remodeling of HSF1 and HSF2 binding to chromatin. The highest HSF1-chromatin binding was observed at 43M-BM-0C, when HSF2-chromatin binding was reduced. Many promoters (mainly Hsp genes) were occupied by both heat shock factors at physiological temperature of testes and/or at 38M-BM-0C. In contrary at 43M-BM-0C only HSF1 was bound. Obtained results suggest that HSF1 and HSF2 could cooperate in regulation of the transcription of some genes only at physiological temperatures and/or at 38M-BM-0C. Alteration in HSFs interactions and their binding to chromatin could be one of the reason of increased spermatogenic cell death observed after heat shock. On Illumina platform we sequenced DNA immunoprecipitated from isolated spermatocytes using anti-HSF1 antibody or anti-HSF2 antibody. Cells were either untreated (control) or heat shocked for 5-20 minutes. Two PCR-verified ChIP replicates were collected per each sample, and three negative control samples with normal goat serum were included.
2014-10-07 | E-GEOD-56735 | biostudies-arrayexpress
Project description:Heat-Shock Factor 1 (HSF1), master regulator of the heat-shock response, facilitates malignant transformation, cancer cell survival and proliferation in model systems. The common assumption is that these effects are mediated through regulation of heat-shock protein (HSP) expression. However, the transcriptional network that HSF1 coordinates directly in malignancy and its relationship to the heat-shock response have never been defined. By comparing cells with high and low malignant potential alongside their non-transformed counterparts, we identify an HSF1-regulated transcriptional program specific to highly malignant cells and distinct from heat shock. Cancer-specific genes in this program support oncogenic processes: cell-cycle regulation, signaling, metabolism, adhesion and translation. HSP genes are integral to this program, however, even these genes are uniquely regulated in malignancy. This HSF1 cancer program is active in breast, colon and lung tumors isolated directly from human patients and is strongly associated with metastasis and death. Thus, HSF1 rewires the transcriptome in tumorigenesis, with prognostic and therapeutic implications. ChIP-seq was used to characterize HSF1 binding
2012-08-07 | E-GEOD-38901 | biostudies-arrayexpress