Distinct cellular tools of mild hyperthermia-induced acquired stress tolerance in Chinese Hamster Ovary cells
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ABSTRACT:
PROVIDER: PRJNA820638 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR18502223_1.fastq.gz | Fastqsanger.gz | |||
| SRR18502223_2.fastq.gz | Fastqsanger.gz | |||
| SRR18502224_1.fastq.gz | Fastqsanger.gz | |||
| SRR18502224_2.fastq.gz | Fastqsanger.gz | |||
| SRR18502225_1.fastq.gz | Fastqsanger.gz |
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Project description:Mild stress could help cells to survive more severe environmental or pathophysiological conditions. In the current study, we investigated the cellular mechanisms which contribute to the development of stress tolerance upon a prolonged (0-12h) fever-like (40 °C) or a moderate (42.5 °C) hyperthermia in mammalian CHO cells. Our results indicate that mild heat triggers a distinct, dose dependent remodeling of the cellular lipidome followed by the expression of heat shock proteins only at higher heat dosages. A significant elevation in the relative concentration of sat-urated membrane lipid species, specific lysophosphatidylinositol and sphingolipid species sug-gests prompt membrane microdomain reorganization and an overall membrane rigidification in response to the fluidizing heat in a time dependent manner. RNAseq experiments reveal that mild heat initiate endoplasmic reticulum stress-related signaling cascades resulting in lipid re-arrangement and ultimately in an elevated resistance against membrane fluidization by benzyl alcohol. To protect cells against lethal, protein denaturing high temperatures the classical heat shock protein response was required. The different layers of stress response elicited by different heat dosages highlights the capability of cells to utilize multiple tools to gain resistance against or to survive lethal stress conditions.
2022-05-18 | GSE199531 | GEO
Project description:Mild stress could help cells to survive more severe environmental or pathophysiological conditions. In the current study, we investigated the cellular mechanisms which contribute to the development of stress tolerance upon a prolonged (0-12 h) fever-like (40 °C) or a moderate (42.5 °C) hyperthermia in mammalian Chinese Hamster Ovary (CHO) cells. Our results indicate that mild heat triggers a distinct, dose-dependent remodeling of the cellular lipidome followed by the expression of heat shock proteins only at higher heat dosages. A significant elevation in the relative concentration of saturated membrane lipid species and specific lysophosphatidylinositol and sphingolipid species suggests prompt membrane microdomain reorganization and an overall membrane rigidification in response to the fluidizing heat in a time-dependent manner. RNAseq experiments reveal that mild heat initiates endoplasmic reticulum stress-related signaling cascades resulting in lipid rearrangement and ultimately in an elevated resistance against membrane fluidization by benzyl alcohol. To protect cells against lethal, protein-denaturing high temperatures, the classical heat shock protein response was required. The different layers of stress response elicited by different heat dosages highlight the capability of cells to utilize multiple tools to gain resistance against or to survive lethal stress conditions.
| S-EPMC9138356 | biostudies-literature
Project description:Physical factors can have major influences on the proliferation and differentiation fate of hematopoietic stem cells in culture. Recently, we demonstrated that cord blood CD34+ cells undergo accelerated and increased megakaryocyte differentiation when incubated at 39°C. In this study, we investigated in detail the impacts of mild hyperthermia on the kinetics of megakaryocyte differentiation, maturation, polyploidization and cell viability. The qualitative and quantitative effects on Mk differentiation were found to be rapidly induced, and optimization of the culture length at 39°C led to greater Mk yields. Mild hyperthermia did not promote endomitosis of cord blood-derived Mk, but rather led to a small reduction in the proportion of polyploid Mk. Moreover, it had little impact on viability but induced a significant shift in the proportion of cells undergoing apoptosis at 37°C to necrosis at 39°C. Finally, our results suggest that the effects on megakaryocyte differentiation could be the consequences of aberrant expression of key megakaryocyte transcription factors induced by mild hyperthermia. Keywords: Effect of mild hyperthermia on Mk differentiation
2007-12-01 | GSE9218 | GEO
Project description:The rationale underlying hyperthermia is the fact that temperatures over 42.5˚C are highly cytotoxic to tumor cells. On the other hand, although mild hyperthermia at a range from 39 to 41˚C alone did not induce cytotoxicity in tumor cells, mild hyperthermia is reported to show a synergism with radiotherapy and anti-cancer drugs. Here, the effects of mild hyperthermia (41˚C for 30 min) on the gene expression in human lymphoma U937 cells were investigated using by an Affymetrix GeneChip system. Although the cells treated with the mild hyperthermia did not induce apoptosis, a significant increase in protein levels of heat shock proteins, Hsp40 and Hsp70, was observed following activation of heat shock factor-1. At 3 h post-treatment, 938 probe sets that were differentially expressed by >1.5-fold were identified. Keywords: mild hyperthermia, gene expression, Human lymphoma U937 cell
2008-01-03 | GSE10043 | GEO
Project description:Hyperthermia is widely used to treat patients with various cancers. Here, the effects of heat stress at 41°C for 30 min (mild hyperthermia) on the gene expression in Hs68 human skin normal fibroblast cells were investigated using an Affymetrix GeneChip system. The cells were treated with mild hyperthermia, followed by incubation for 0, 1, or 3 h at 37°C. No cell death was observed in the mild hyperthermia-treated cells. On the other hand, many genes that were differentially expressed by a factor 1.5 or greater were identified in the cells treated with the mild hyperthermia.
2012-07-13 | GSE39177 | GEO
Project description:Hyperthermia is widely used to treat patients with various cancers. Here, the effects of heat stress at 41°C for 30 min (mild hyperthermia) on the gene expression in OUMS-36 human normal fibroblast cells were investigated using an Affymetrix GeneChip system. The cells were treated with mild hyperthermia, followed by incubation for 0, 1, or 3 h at 37°C. No cell death was observed in the mild hyperthermia-treated cells. On the other hand, many genes that were differentially expressed by a factor 1.5 or greater were identified in the cells treated with the mild hyperthermia.
2012-07-13 | GSE39178 | GEO
Project description:We investigated expression profiles of miRNAs in HeLa cells that were subjected to a mild hyperthermia as well as normal temperature by means of DNA microarray. The data suggested similar expression profiles to each other. Small RNA samples prepared from HeLa cells exposed to a mild hyperthermia (40M-BM-:C) as well as normal temperature (37M-BM-:C) were examined by means of GenopalM-BM-.-MICH07 DNA chips.
2014-09-01 | E-GEOD-53745 | biostudies-arrayexpress
Project description:We investigated expression profiles of miRNAs in HeLa cells that were subjected to a mild hyperthermia as well as normal temperature by means of DNA microarray. The data suggested similar expression profiles to each other.
2014-09-01 | GSE53745 | GEO
Project description:Hyperthermia is widely used to treat patients with various cancers. Here, the effects of heat stress at 41M-BM-0C for 30 min (mild hyperthermia) on the gene expression in Hs68 human skin normal fibroblast cells were investigated using an Affymetrix GeneChip system. The cells were treated with mild hyperthermia, followed by incubation for 0, 1, or 3 h at 37M-BM-0C. No cell death was observed in the mild hyperthermia-treated cells. On the other hand, many genes that were differentially expressed by a factor 1.5 or greater were identified in the cells treated with the mild hyperthermia. Hs68 human skin normal fibroblast cells were treated with heat stress (41M-BM-0C for 30 min), followed by incubation for 0, 1, or 3 h at 37M-BM-0C. Non-treated cells served as the control. Total RNA samples were prepared from the cells, and quality of the RNA was analyzed using a Bioanalyzer 2100. Gene expression was monitored by an Affymetrix GeneChipM-BM-. system with a Human Genome U133-plus 2.0 array. Sample preparation for array hybridization was carried out as described in the manufacturer's instructions.
2012-07-12 | E-GEOD-39177 | biostudies-arrayexpress
Project description:Hyperthermia is widely used to treat patients with various cancers. Here, the effects of heat stress at 41M-BM-0C for 30 min (mild hyperthermia) on the gene expression in OUMS-36 human normal fibroblast cells were investigated using an Affymetrix GeneChip system. The cells were treated with mild hyperthermia, followed by incubation for 0, 1, or 3 h at 37M-BM-0C. No cell death was observed in the mild hyperthermia-treated cells. On the other hand, many genes that were differentially expressed by a factor 1.5 or greater were identified in the cells treated with the mild hyperthermia. OUMS-36 human normal fibroblast cells were treated with heat stress (41M-BM-0C for 30 min), followed by incubation for 0, 1, or 3 h at 37M-BM-0C. Non-treated cells served as the control. Total RNA samples were prepared from the cells, and quality of the RNA was analyzed using a Bioanalyzer 2100. Gene expression was monitored by an Affymetrix GeneChipM-BM-. system with a Human Genome U133-plus 2.0 array. Sample preparation for array hybridization was carried out as described in the manufacturer's instructions.
2012-07-12 | E-GEOD-39178 | biostudies-arrayexpress