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The comparison of gene expression profiles in hepatic stellate cells isolated from mouse livers by perfusion method at 37 degrees or 6 degrees

ABSTRACT: The comparison of gene expression profiles in hepatic stellate cells isolated from mouse livers by perfusion method at 37 degrees or 6 degrees

PROVIDER: PRJNA792190 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17329720.fastq.gz	Fastqsanger.gz
	SRR17329721.fastq.gz	Fastqsanger.gz
	SRR17329722.fastq.gz	Fastqsanger.gz
	SRR17329723.fastq.gz	Fastqsanger.gz
	SRR17329724.fastq.gz	Fastqsanger.gz

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The comparison of gene expression profiles in hepatic stellate cells isolated from mouse livers by perfusion method at 37 degrees or 6 degrees

Project description:We compared transcriptome profiling (bulk RNA-seq) of hepatic stellate cells isolated from mouse livers by perfusion method using collagenase at 37 degrees or 6 degrees and evaluated the heat-stressed gene expression at 37 degrees.

2022-09-28 | GSE192598 | GEO

The expression profiles of log-phase and stationary-phase cells of Shigella flexneri grown at 30 degrees and 37 degrees Celsius

Project description:To obtain a global view of the response of S. flexneri at the expression level induced by temperature up-shift, we compared the expression profiles of log-phase and stationary-phase cells grown at 30 degrees and 37 degrees Celsius.

2010-06-02 | GSE16535 | GEO

Transcription profiling by array of Candida albicans populations exposed to a temperature shift from 25 degrees to 37 degrees

Project description:Seperate White and Opaque Candida albicans populations were exposed to a temperature shift from 25 degrees to 37 degrees. Samples were then harvested at various time points to follow the effects of the shift on the two cell types, particularly the opaque cell type which switches to the white cell type after several hours at 37 degrees.

2011-05-08 | E-MEXP-2705 | biostudies-arrayexpress

Microarrays of SK-N-AS cells at 37 and 40 degrees C treated with TNFalpha

Project description:In this data set we investigate dynamic differences in the transcriptome between 37 and 40 degrees C after treatment with TNFalpha. In the continuous temperature experiments, cells were grown at 37 degrees C and were then left at 37 degrees C, or transferred to 40 degrees C, for 1hour after which they (at time 0) were stimulated with 10 ng/ml of TNFÎ± . Measurements were taken at 0, 30, 130, 230 and 430 minutes. In the 'switch' experiment, cells were grown the same way but the temperature of the incubator was turned up to 40 degrees C after 200 minutes. Measurements were taken at 230 and 430 minutes.

2018-04-05 | E-MTAB-5158 | biostudies-arrayexpress

Response by Fusarium oxysporum f.sp. lycopersici 4287 to 28 and 37 degrees celcius

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Gene expression profiling of human livers during normothermic machine perfusion

Project description:Normothermic machine perfusion (NMP) has been successfully implemented in clinical routine of liver transplantation over the past years. However, little is known about the mechanisms how NMP impacts on the transcriptome of a human donor liver. We herein examined gene expression profiles in transplanted and non-transplanted livers over NMP time. 50 livers subjected to NMP were included in this study. 30 were transplanted after a maximum of 20 hours (h) perfusion, while 15 were discarded due to poor performance. Biopsies were collected befor eNP (PRE), 1h, 6h, 12h, 20h of NMP and after reperfusion. Next-generation sequencing was applied in liver biopsies to assess differential gene expression over perfusion time. Perfusate samples were collected regularly to monitor liver function. Comparison in differential gene expression between PRE and 20h NMP showed 415 upregulated and 727 downregulated genes. Most significantly upregulated genes were associated with extra cellular matrix organization, cell growth/differentiation processes and cytokine signaling. A set of genes were identified which were significantly differentially expressed and important for classification of non-transplanted vs transplanted biopsies, especially at 12 and 20h of NMP. A 7-gene-signature showed good separation already at 6H NMP, thereby CD274 (PD-L1) expression was ponted out as most important.

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Pan-caspase inhibition during normothermic machine perfusion of discarded livers mitigates ischemia-reperfusion injury

Project description:Access to liver transplantation is limited by a significant organ shortage. The recent introduction of machine perfusion technology allows surgeons to monitor and assess ex situ liver function prior to transplantation. However, many donated organs are of inadequate quality for transplant, though opportunities exist to rehabilitate organ function with adjunct therapeutics during normothermic machine perfusion. In this preclinical study, we targeted the apoptosis pathway as a potential method of improving hepatocellular function. Treatment of discarded human livers during normothermic perfusion with an irreversible pan-caspase inhibitor, emricasan, resulted in significant mitigation of ischemia-reperfusion injury at both the transcriptional and protein level. This was evidenced by significantly decreased circulating levels of the pro-inflammatory cytokines, interleukin-6, interleukin-8, and interferon-gamma, compared to control livers. Untreated livers also demonstrated transcriptional changes notable for enrichment in pathways involved in innate immunity, leukocyte migration, and cytokine-mediated signaling. Targeting of unregulated apoptosis may represent a viable therapeutic intervention for rehabilitating liver hepatocellular function during machine perfusion.

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Inflammatory gene expression in livers undergoing ex situ normothermic perfusion is attenuated by leukocyte removal from the perfusate

Project description:ABSTRACT: Background. Ex situ normothermic perfusion (ESNP) is a method to evaluate and potentially recondition organs before transplantation. However, increased expression of inflammatory molecules, including by tissue-resident immune cells, may occur during the perfusion process, potentially negating the beneficial effects of perfusion. Methods. We used RNA sequencing to assess gene expression in 31 livers undergoing ESNP, including 23 donated after circulatory death (DCD) and 8 donated after brain death. In 7 DCD livers, a leucocyte filter was added to the circuit during perfusion. Biopsies were available for transcriptomic assessment in all cases at the start of perfusion and at varying time points postperfusion. Results. During ESNP in DCD livers, we observed an increase in proinflammatory, profibrinolytic, and prorepair pathway genes. SERPINE1, encoding plasminogen activator inhibitor-1, was among the genes most significantly upregulated during perfusion in DCD livers, potentially promoting fibrin clot persistence in vasculature. We also found increased expression of monocyte and neutrophil recruiting chemokine and proinflammatory cytokine transcripts during ESNP, but several prorepair molecules, including thymic stromal lymphopoietin, were also upregulated. In both DCD and donation after brain death livers, interferon-gamma response genes were enriched, whereas oxidative phosphorylation genes decreased in organs with high perfusate alanine transaminase, a biomarker associated with adverse clinical outcomes. The inclusion of a leukocyte filter in the perfusion circuit mitigated the induction of inflammation/immune pathway genes during perfusion and was associated with enrichment in oxidative phosphorylation genes. Conclusions. Leukocyte removal during ESNP abrogates transcriptional changes that are associated with unfavorable clinical outcomes, potentially benefiting human livers undergoing ESNP.

2024-10-01 | GSE245976 | GEO

Detection of gene expression level of Yersinia pestis vaccine strain EV76 at 21 and 37 degrees Celsius

Project description:In order to study the gene expression differences of ev76 in the environment and the appropriate growth temperature of flea (21 ℃) and mouse body temperature (37 ℃), we cultured ev76 at 21 ℃ and 37 ℃ respectively, collected bacterial precipitation and sequenced the transcriptome

2022-04-30 | GSE201684 | GEO

Translational profiling of HEK293 cells exposed to cold shock (32 degrees C) and untreated (37 degrees C)

Project description:This experiment investigates the effect of mild cold-shock (32 degrees C, 24 hours) on the translatome of human HEK293 cells. After cold-shock, cells were treated with cycloheximide to block elongation, then sucrose density gradients were used to separate post-nuclear extracts into polysome and subpolysome fractions. The pooled polysomal fraction was labelled with Cy5, the pooled subpolysomal fraction was labelled with Cy3, and both were hybridised to the same array.

2017-02-23 | E-MTAB-5437 | biostudies-arrayexpress

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