Ontology highlight
ABSTRACT:
PROVIDER: PRJNA689225 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13342210_1.fastq.gz | Fastqsanger.gz | |||
| SRR13342210_2.fastq.gz | Fastqsanger.gz | |||
| SRR13342211_1.fastq.gz | Fastqsanger.gz | |||
| SRR13342211_2.fastq.gz | Fastqsanger.gz | |||
| SRR13342212_1.fastq.gz | Fastqsanger.gz |
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Project description:Transcriptome analysis of liver tissue in HBV - associated liver fibrosis mice
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Project description:Purpose: The goal of this study is to investigate the effect of recombinant human Cytoglobin (rhCYGB) on liver fibrosis induced by DDC diet in mice. Method: mRNA profiles of liver tissue of DDC-control mice and liver tissue of DDC-rhCYGB treated mice treated were generated by deep sequencing. Results: The RNA-seq data confirmed that extracellular matrix-encoding genes and fibrosis-related genes were down-regulated by the His-CYGB treatment.
2020-08-25 | GSE156778 | GEO
Project description:Liver fibrosis has been implicated in the pathogenesis of various liver disease. Thus far, there is still no effective intervention means for this process. Recently, we have demonstrated that S100A16 participated in liver lipid accumulation and renal fibrosis. Therefore, we hypothesized that S100A16 took a critical role in liver fibrosis. S100a16 transgenic and knockdown mice were generated and stimulated with carbon tetrachloride, bile duct ligation and methionine choline deficiency diet. Alterations of gene expression in hepatic stellate cells from wild type and S100a16+/- mice were investigated by transcriptome sequencing. S100A16 expression levels in liver tissue of patients and rodent models of liver fibrosis were markedly increased. S100a16 transgenic mice showed spontaneous liver fibrosis after normal feeding for 6 months. On the contrary, silencing of S100a16 exhibited obvious protective effect against liver fibrosis caused by different stimulations. Meanwhile, results showed that deletion of S100a16 significantly inhibited hepatic stellate cells (HSCs) activation cultured in fetal bovine serum contained medium. RNA sequencing results revealed that mechanistically, C-X-C motif chemokine receptor 4 (Cxcr4) participated in the process of S100a16 in liver fibrosis. Knockdown of S100a16 inhibited Cxcr4 expression through augmenting P53 expression. SDF-1α/CXCR4-dependent extracellular signal-regulated kinase 1/2 and Akt phosphorylation mediated the effects of S100a16 on α-smooth muscle actin expression and HSCs activation. These data indicate that S100a16 deficiency prevents liver fibrosis by inhibiting Cxcr4 expression. Targeting S100A16 may provide insights into the pathogenesis of liver fibrosis and pave the way for developing strategies for liver fibrosis-related diseases prevention and treatment.
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Project description:Liver fibrosis is characterized by the activation of perivascular hepatic stellate cells (HSCs), the release of fibrogenic nano-sized extracellular vesicles (EVs) and increased HSC glycolysis. Nevertheless, how glycolysis in HSCs coordinates fibrosis amplification through tissue zone-specific pathways remains elusive. Here, we demonstrate that HSC-specific genetic inhibition of glycolysis reduced liver fibrosis. Moreover, spatial transcriptomics revealed a fibrosis-mediated upregulation of EV-related pathways in the liver pericentral zone, which was abrogated by the glycolysis genetic inhibition. Mechanistically, glycolysis in HSCs upregulated the expression of EV-related genes such as RAB31 by enhancing histone-3-lysine-9 acetylation on the promoter region, which increased EV release. Functionally, these glycolysis-dependent EVs increased fibrotic gene expression in recipient HSC. Furthermore, EVs derived from glycolysis-deficient mice abrogated liver fibrosis amplification in contrast to glycolysis-competent mouse EVs. In summary, glycolysis in HSCs amplifies liver fibrosis by promoting fibrogenic EV release in the hepatic pericentral zone, which represents a potential therapeutic target.
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Project description:Background: Niemann Pick type C disease (NPC) is a neurovisceral lipid storage disorder, characterized by unesterified cholesterol accumulation in lysosomal/late endosome compartments. The main tissues affected in the disease are the liver and the cerebellum. Although the primary defect in this disease occurs in the liver, the pathological mechanisms involved in hepatocyte damage and death have been poorly explored. Here, we assessed biochemical parameters, liver histology and the mRNA abundance of genes encoding proteins associated to oxidative stress, copper metabolism, fibrosis and inflammation and cholesterol metabolism in livers of WT and NPC mice. Methodology/Principal Findings: We found that the histology of NPC mice livers show signals of inflammation and fibrosis. This was correlated with an increase of carbonylated proteins and reduced glutathione content in the liver, as well as a significantly increment of total content of copper in liver tissue. Finally, we analyzed the liver gene expression pattern by qPCR and microarray assays. We found a correlation between the tissue fibrotic status and a differential hepatic expression of genes related to oxidative stress, fibrosis and inflammation processes in NPC mice. Conclusions/Significance: Our data show that NPC liver disease is evidenced by an increase in fibrosis as well as in oxidative stress status. Concomitantly, there is a correlation with an altered gene expression pattern, mainly of oxidative stress and fibrosis related genes, which could be useful as a potential disease progression biomarkers. We compared three liver samples from NPC mice to a common reference sample made from pooled mRNA of three wild type mice
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Project description:ob mice liver tissue sequencing
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Project description:Establish the miRNA expression profile between advanced liver fibrosis and liver without fibrosis in mice
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Project description:Using Yiqi Yangyin Quyu Formula to intervene in muscle tissue of SS mice for 8 weeks, observing tissue morphology and mitochondrial status, and conducting transcriptome and proteomic sequencing analysis on skeletal muscle
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Project description:Angiocrine signaling by liver sinusoidal endothelial cells (LSEC) regulates liver functions such as liver growth, metabolic maturation, and regeneration. Recently, we identified GATA4 as the master regulator of LSEC specification during development. Here, we studied endothelial GATA4 in the adult liver and in hepatic disease pathogenesis. We generated adult Clec4g-icretg/0xGata4fl/fl (Gata4LSEC KO) mice with deficiency of Gata4 in LSEC. Livers were analyzed by histology, electron microscopy, immunohistochemistry/immunofluorescence, in-situ hybridization, and by expression profiling and ATAC-sequencing of isolated LSEC. For liver regeneration, partial hepatectomy was performed. As models of liver fibrosis, CDAA diet and chronic CCl4 exposure were applied. Human single cell RNAseq data sets were analyzed for endothelial alterations in healthy and cirrhotic livers. Genetic Gata4 deficiency in LSEC in adult mice caused perisinusoidal liver fibrosis, hepatopathy and impaired liver regeneration. Sinusoidal capillarization and LSEC-to-continuous endothelial transdifferentiation were accompanied by a profibrotic angiocrine switch including de novo endothelial expression of hepatic stellate cell-activating cytokine PDGFB. Increased chromatin accessibility and amplification by activated Myc mediated angiocrine PDGFB expression. In CDAA diet-induced perisinusoidal liver fibrosis, LSEC showed repression of GATA4, activation of MYC and the profibrotic angiocrine switch already detected in Gata4LSEC KO mice. Comparison of CDAA-fed Gata4LSEC KO and control mice demonstrated that endothelial Gata4 indeed protects from dietary-induced perisinusoidal liver fibrosis. In human cirrhotic livers, Gata4-positive LSEC and endothelial Gata4 target genes were reduced, while non-LSEC endothelial cells and Myc target genes including PDGFB were enriched. Endothelial GATA4 protects from perisinusoidal liver fibrosis by repressing MYC activation and profibrotic angiocrine signaling on the chromatin level. Therapies targeting the GATA4/MYC/PDGFB/PDGFRβ axis offer a promising strategy for the prevention and treatment of liver fibrosis.
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