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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [Capture Hi-C]

ABSTRACT: We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. To determine whether distal REs come into contact with promoters, instead of using a classical Hi-C, we further combined Hi-C with a capture enrichment step. We generated a biotinylated RNA bait library specifically targeting 212,735 promoter regions and performed a capture Hi-C after 0h, 1h and 6h after stress.

ORGANISM(S): Solanum lycopersicum

PROVIDER: GSE206356 | GEO | 2023/01/03

REPOSITORIES: GEO

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [RNA-seq 2]

Project description:We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. We performed gene expression profiling analysis using data obtained from RNA-seq of 4 weeks old tomato (Solanum lycopersicum cv. Moneymaker background ) plants (wild type and RNAi knock-down lines) which were treated at 45°C for 0h, 1h and 6h.

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [DAP-seq]

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [RNA-seq 1]

Project description:We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. To confirm that the temperature and timing used for the heat stress are relevant, we generated RNA-seq data and analyzed changes in gene expression induced by the heat stress treatment.

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [HiChIP]

Project description:We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. To validate the presence of transcription factories we performed a HiChIP experiment, which is a sensitive and efficient method to analyze protein-centric chromosome conformation, using an anti-RNA polymerase II antibody.

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [ATAC-seq]

Project description:We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. We performed ATAC-seq experiments which provide accessible chromatin sites that can be used to identify putative regulatory elements coming in physical contact with promoters when they are actived.

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Promoter capture Hi-C of CD34+ haematopoietic stem cells

Project description:CD34+ heamatopoietic stem cells were isolated from the bone marrow of two healthy donors undergoing total hip replacement. Promoter capture Hi-C (PCHi-C) was performed on these cells using the protocol according to Mifsud et al. 2015, with the exception that ligation was performed in situ, and a slightly modified bait capture set was used. Bait positions in hg19 are included as an additional file.

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Promoter Capture Hi-C of mouse ESC and TSC

Project description:Chromatin organisation of trophoblast stem cells (TSC) were compared with that of embryonic stem cells (ESC). The method enriches Hi-C libraries, to detect promoter interactions at restriction fragment level. We prepared Hi-C libraries from TSC and ESC (serum grown) samples and enriched them with a promoter capture bait system that captures ~22.000 promoters. Promoter interactions were then analysed using the GOTHiC pipeline.

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [ChIP-seq]

Project description:To investigate the HSFA1a, a master regulator of heat stress response, plays a key role in this reorganization by promoting the formation of promoter/enhancer chromatin loops. To determine if a typical chromatin signature could differentiate distal and proximal REs, we performed ChIP-seq experiments and analyzed the levels of four histone covalent modifications that are permissive for transcription: H3K4me3, H3K9ac, H3K18ac and H3K27ac at 0, 1 and 6 hours after heat stress on both proximal and distal REs specifically active at 1 hour after HS. In addition, To assess if RNAPII could also by recruited at distal active enhancers in plants, we performed an RNAPII ChIP-seq on plant subjected to 0, 1 and 6 hours of heat stress and analyzed its accumulation on distal REs specifically active at 1 hour after HS. Moreover, we did ChIP-seq of H3K27me1 associated constitutive heterochromatin at normal condition.

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Capture Hi-C on MM

Project description:In situ promoter capture Hi-C on multiple myeloma cell line KMS11 in experimental triplicates. Hi-C libraries were prepared as previously described (Rao et al., 2014, http://dx.doi.org/10.1016/j.cell.2014.11.021). Promoter capture was based on 32,313 biotinylated 120-mer RNA baits (Agilent). Hi-C libraries were sequenced using Illumina HiSeq 2000 technology. The files are in FASTQ format.

| EGAS00001002614 | EGA

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