Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA258367 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Exiqon miRNA array contains LNA-modified oligos which minimizes the Tm-range within which probe hybridizes with the transcript in query, thus minimizing the mis-match. Taking advantage of this, we used the miRCURY LNA array to investigate genome wide signatures for miRNA expression in response to heat shock stress. We also did mRNA expression profiling using the same RNA to look for possible miRNA-mRNA interaction in response to heat shock stress. For the differentially expressed miRNAs, target predictions were done using both miRanda and TargetScan. The consensus set was used for subsequent experimental validation.
2015-01-01 | GSE60472 | GEO
Project description:Exiqon miRNA array contains LNA-modified oligos which minimizes the Tm-range within which probe hybridizes with the transcript in query, thus minimizing the mis-match. Taking advantage of this, we used the miRCURY LNA array to investigate genome wide signatures for miRNA expression in response to heat shock stress. We also did mRNA expression profiling using the same RNA to look for possible miRNA-mRNA interaction in response to heat shock stress. For the differentially expressed miRNAs, target predictions were done using both miRanda and TargetScan. The consensus set was used for subsequent experimental validation. In total, 6 comparative hybridizations of heat-shock treated versus control were profiled using the Exiqon arrays. These consisted of 3 biological replicates, each with its dye-swap pair.
2015-01-01 | E-GEOD-60472 | biostudies-arrayexpress
Project description:Environmental stress, such as oxidative or heat stress, induces the activation of the heat shock response
(HSR) and leads to an increase in the heat shock proteins (HSPs) level. These HSPs act as molecular
chaperones to maintain cellular proteostasis. Controlled by highly intricate regulatory mechanisms,
having stress-induced activation and feedback regulations with multiple partners, the HSR is still
incompletely understood. In this context, we propose a minimal molecular model for the gene
regulatory network of the HSR that reproduces quantitatively different heat shock experiments both
on heat shock factor 1 (HSF1) and HSPs activities. This model, which is based on chemical kinetics
laws, is kept with a low dimensionality without altering the biological interpretation of the model
dynamics. This simplistic model highlights the titration of HSF1 by chaperones as the guiding line of
the network. Moreover, by a steady states analysis of the network, three different temperature stress
regimes appear: normal, acute, and chronic, where normal stress corresponds to pseudo thermal
adaption. The protein triage that governs the fate of damaged proteins or the different stress regimes
are consequences of the titration mechanism. The simplicity of the present model is of interest in
order to study detailed modelling of cross regulation between the HSR and other major genetic
networks like the cell cycle or the circadian clock.
Sivéry, A., Courtade, E., Thommen, Q. (2016). A minimal titration model of the mammalian dynamical heat shock response. Physical biology, 13(6), 066008.
2022-01-25 | MODEL2201210001 | BioModels
Project description:Exon-array profiling of Heat-shock stress response in HeLa cell line
| PRJNA137477 | ENA
Project description:To determine the transcriptional responses to heat shock of inner ear sensory hair cells and supporting cells, we performed cell-type-specific transcriptional profiling using the RiboTag method, which allows for immunoprecipitation of actively translating mRNAs from specific cell types. RNA-Seq differential gene expression analyses demonstrated that RiboTag identified known cell type-specific markers as well as new markers for hair cells and supporting cells. Gene expression differences suggest that both hair cells and supporting cells exhibit a transcriptional heat shock response. However, hair cells and supporting cells expressed different members of the heat shock protein family in response to heat stress, and supporting cells expressed a larger number of HSPs. Only one HSP, Chaperonin Containing T-Complex Polypeptide 1 Subunit 8, (CCT8) was uniquely induced in hair cells. Together our data indicate that hair cells exhibit a limited but unique heat shock response, and supporting cells exhibit a broader and more robust transcriptional response to protective heat stress.
2020-05-05 | GSE139593 | GEO
Project description:We hypothesized that broad-scale expression profiling would provide insight into the regulatory pathways that control gene expression in response to stress, and potentially identify novel heat-responsive genes. HEp2 cells were heated at 37 to 43 °C for 60 min to gauge the heat shock response, using as a proxy inducible HSP-70 quantified by western blot analysis. Based on these results, microarray experiments were conducted at 37, 40, 41, 42 and 43°C (3 replicates/temperature x 5 groups = 15 U95Aver2 GeneChips). Using linear modeling, we compared the sets of microarrays at 40, 41, 42 and 43°C with the 37°C baseline temperature and took the union of the genes exhibiting differential gene expression signal to create two sets of “heat shock response” genes, each set reflecting either increased or decreased RNA abundance. Leveraging human and mouse orthologous alignments, we used the two lists of co-expressed genes to predict transcription factor binding sites in silico, including those for heat shock factor 1 (HSF1) and heat shock factor 2 (HSF2) transcription factors. We discovered HSF1 and HSF2 binding sites in 15 genes not previously associated with the heat shock response. We conclude that microarray experiments coupled with upstream promoter analysis can be used to identify novel genes that respond to heat shock. Additional experiments are required to validate these putative heat shock proteins and facilitate a deeper understanding of the mechanisms involved during the stress response. Keywords: stress response, temperature, human epithelial cells
2007-04-10 | GSE7458 | GEO
Project description:FBXW7 modulates stress response by post-translational modification of HSF1 HSF1 orchestrates the heat-shock response upon exposure to heat stress and activates a transcriptional program vital for cancer cells. Genes positively regulated by HSF1 show increeased expression during heat shock while their expression is reduced during recovery. Genes negatively regulated by HSF1 show the opposite pattern. In this study we utilized the HCT116 FBXW7 KO colon cell line and its wild type counterpart to monitor gene expression changes during heat shock (42oC, 1 hour) and recovery (37oC for 2 hours post heat shock) using RNA sequencing. These results revealed that the heat-shock response pathway is prolonged in cells deficient for FBXW7. Whole RNA was extracted from 1 million HCT116 WT or FBXW7KO cells using the RNAeasy kit (Qiagen) according to the manufacturer’s protocol. Poly-A+ (magnetic oligodT-containing beads (Invitrogen)) or Ribominus RNA was used for library preparation. cDNA preparation and strand-specific library construction was performed using the dUTP method. Libraries were sequenced on the Illumina HiSeq 2000 using 50bp single-read method. Differential gene expression analysis was performed for each matched recovery versus heat-shock pairs, separately in each biological replicate and cell line (WT or KO). Two types of comparisons were tested: (a) WT recovery vs WT heat shock, (b) FBXW7 KO recovery vs heat shock.
2015-02-20 | E-GEOD-57397 | biostudies-arrayexpress
Project description:FBXW7 modulates stress response by post-translational modification of HSF1 HSF1 orchestrates the heat-shock response upon exposure to heat stress and activates a transcriptional program vital for cancer cells. Genes positively regulated by HSF1 show increeased expression during heat shock while their expression is reduced during recovery. Genes negatively regulated by HSF1 show the opposite pattern. In this study we utilized the HCT116 FBXW7 KO colon cell line and its wild type counterpart to monitor gene expression changes during heat shock (42oC, 1 hour) and recovery (37oC for 2 hours post heat shock) using RNA sequencing. These results revealed that the heat-shock response pathway is prolonged in cells deficient for FBXW7.
2015-02-20 | GSE57397 | GEO
Project description:Heat shock factors (Hsfs) are known to regulate heat and drought stress response by controlling the expression of heat shock proteins and oxidative stress responsive genes. Loss-of-function of OsHSFA2e gene resulted in increased sensitivity of rice plants to drought and heat stress. To identify the targets of OsHSFA2e and dissect the stress response pathway regulated by it, we performed transcriptome profiling of Oshsfa2e mutant plants under drought stress as well as well-watered conditions by RNA-sequencing.
2015-01-16 | GSE65025 | GEO
Project description:To realize the gene expression in response to acute heat stress in chicken small yellow follicles, we have employed whole genome microarray expression profiling as we have employed whole genome microarray expression profiling as a tool to identify genes response to acute heat stress. Female B strain Taiwan country chickens were subjected to acute heat stress (38℃) for 2 h, and then exposed to 25℃, with small yellow follicles collected 0, 2, and 6 h after the cessation of heat stress, using non heat-stressed hens as a control group (n = 3 hens per group). Based on a chicken 44K oligo microarray, 69, 51, and 76 genes were upregulated and 58, 15, 56 genes were downregulated after heat treatment of H2R0, H2R2, and H2R6, respectively, using a cutoff value of two-fold or higher in the small yellow follicles of the heat-stressed chickens from those of the control chickens. Upregulation of heat shock protein 25, interleukin 6, metallopeptidase 1, and metalloproteinase 13, and downregulation of type II alpha 1 collagen, discoidin domain receptor tyrosine kinase 2, and Kruppel-like factor 2 were confirmed through quantitative real-time polymerase chain reaction (qRT-PCR).
2017-05-20 | GSE99108 | GEO