Ontology highlight
ABSTRACT:
PROVIDER: PRJNA705692 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13816067.fastq.gz | Fastqsanger.gz | |||
| SRR13816068.fastq.gz | Fastqsanger.gz | |||
| SRR13816069.fastq.gz | Fastqsanger.gz | |||
| SRR13816070.fastq.gz | Fastqsanger.gz | |||
| SRR13816071.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 29 |
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Project description:Selective HIF stabilisation in 70% liver resection
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Project description:In this work, the effect of splenectomy on liver sinusoidal cells was studied. For this purpose in the animals were reproduced splenectomy, and after 7 days 70% liver resection was performed. Animals in which the spleen was intact and only 70% liver resection was performed served as a comparison group. Animals in which only the spleen was removed also served as controls. The animals were removed from the experiment after 24 hours, 3 and 7 days. Liver sinusoidal cells were isolated from the livers of control animals as well as from the liver after 70% resection by magnetic sorting using the CD146 beads. RNA was isolated from the obtained liver sinusoidal cells and used for transcriptome analysis. Liver sinusoidal cells in the regenerating liver were transcriptomically enriched for signaling pathways associated with monocyte migration, cell adhesion and cell death.
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Project description:The aim of our work was to study the expression profile of spleen genes during liver regeneration, to identify possible biologically active substances that affect reparative processes and inflammation in other organs, as well as the state of the monocytic-macrophage and lymphocytic population of the spleen after liver resection. We used microarrays for comparison of spleen gene expression on different time periods after 70% liver resection
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Project description:The liver has the unique capacity to regenerate after surgical resection. However, the regulation of liver regeneration is not completely understood. We performed miRNA microarray analyses of liver tissue from Wistar rats at different time points after 70% partial hepatectomy (0, 2, 6, 12, 24, 48 hours, and 5 days) and after sham laparotomy (12, 24, and 48 hours). We demonstrate that miRNA expression patterns changed during liver regeneration and that these changes were most evident during the peak of DNA replication at 24 hours after resection. Expression of 13 miRNAs, including five members of the let-7 family, was significantly reduced 12-48 hours after resection, whereas 3 miRNAs were significantly upregulated (> 25% change). We provide a temporal miRNA expression dataset of the regenerating rat liver, which indicates a primary function for miRNA during the peak of DNA replication. These data will assist further functional studies on the role of miRNAs during liver regeneration.
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Project description:The von–Hippel Lindau (VHL) protein is a tumour suppressor protein frequently mutated in the VHL disease, which functions as substrate recognition subunit of a Cul2 E3 ubiquitin ligase (CRL2VHL). CRL2VHL plays an important role in oxygen sensing, by binding and targeting Hypoxia Inducible Factor-alpha subunits (HIF-alpha) for ubiquitination and degradation. VHL is also commonly hijacked by heterobifunctional degrader molecules known as proteolysis-targeting chimeras (PROTACs). In previous work we reported the structure-based design and functional characterisation of VHL inhibitors (VH032 and VH298) that induce the HIF response in cells. Here, we use unbiased quantitative mass spectrometry to identify the proteomic changes elicited by the VHL inhibitor and compare this to hypoxia or broad-spectrum prolyl-hydroxylase domain (PHD) enzyme inhibitor IOX2. Our results demonstrate the VHL inhibitor selectively activates the HIF response that vastly overlaps with hypoxia- and IOX2-induced proteomic changes. Interestingly, VHL inhibitors were found to selectively upregulate a single protein, which is VHL itself. Our analysis revealed that this occurs via protein stabilisation of VHL isoforms and not via changes in transcript levels. Increased VHL levels upon VH298 treatment resulted in turn to reduced levels of HIF-1α protein. Our results demonstrate the high specificity of VHL inhibitors and suggest that use of these inhibitors would not produce overtly side effects due to prolonged HIF stabilisation. They also exemplify the concept that small-molecule binding induced protein stabilisation can increase protein levels inside cells.
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Project description:A Liver Hepcidin-Intestinal HIF-2 Axis Regulates Iron Absorption During Systemic Iron Deficiency, Hypoxia and Hemochromatosis
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Project description:A model of liver regeneration after 70% resection was reproduced in sexually mature male C57 black mice. The animals were removed from the experiment after 1,3 and 7 days. Kidneys were taken from the animals. Kidneys of intact animals were used as a control.
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