IL-17 Signaling in Steatotic Hepatocytes and Macrophages Promotes Alcoholic Liver Disease-induced Hepatocellular Carcinoma
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ABSTRACT:
PROVIDER: PRJNA587133 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
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| SRR10386504_1.fastq.gz | Fastqsanger.gz | |||
| SRR10386504_2.fastq.gz | Fastqsanger.gz | |||
| SRR10386505_1.fastq.gz | Fastqsanger.gz | |||
| SRR10386505_2.fastq.gz | Fastqsanger.gz | |||
| SRR10386506_1.fastq.gz | Fastqsanger.gz |
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Project description:IL-17 Signaling in Steatotic Hepatocytes and Macrophages Promotes Alcoholic Liver Disease-induced Hepatocellular Carcinoma [I]
| PRJNA587136 | ENA
Project description:IL-17 Signaling in Steatotic Hepatocytes and Macrophages Promotes Alcoholic Liver Disease-induced Hepatocellular Carcinoma [II]
| PRJNA587135 | ENA
Project description:IL-17A is a tumor-promoting cytokine, which critically regulates inflammatory responses in myeloid cells, and cholesterol synthesis in steatotic hepatocytes in experimental model of alcohol-induced HCC. Therefore, IL-17A may be a potential therapeutic target for EtOH-induced HCC patients.
2022-10-31 | GSE139840 | GEO
Project description:IL-17A is a tumor-promoting cytokine, which critically regulates inflammatory responses in myeloid cells, and cholesterol synthesis in steatotic hepatocytes in experimental model of alcohol-induced HCC. Therefore, IL-17A may be a potential therapeutic target for EtOH-induced HCC patients.
2022-10-31 | GSE139839 | GEO
Project description:Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes a multi-organ damage that includes hepatic dysfunction, which has been observed in over 50% of COVID-19 patients. Liver injury in COVID-19 patients could be attributed to the cytopathic effects induced by the interation between the virus and hepatic cells, exacerbated immune responses or treatment-associated drug toxicity. Here we demonstrate that primary hepatocytes are susceptible to infection in different models: hepatocytes derived from humanized angiotensin-converting enzyme-2 (hACE-2) mice and THLE-2 human cells. Pseudotyped viral particles engineered to express the full-length spike of SARS-CoV-2 and recombinant RBD bind to ACE2 expressed by hepatocytes, promoting metabolic reprogramming towards glycolysis but also mitochondrial dysfunction. In the context of non-alcoholic steatohepatitis (NASH), steatotic hepatocytes derived from hACE2 mice are more vulnerable to infection, as a result of increased expression of ACE2. Metformin, a common therapeutic option for hyperglycemia in type 2 diabetes (T2D) patients, prevents the interaction between the spike of SARS-CoV-2 and steatotic hepatocytes by reducing the expression of hACE2. In summary, we provide evidence that hepatocytes are amenable to SARS-CoV-2 infection and propose metformin as a therapeutic strategy to prevent liver dysfunction caused by SARS-CoV-2 in the context of NASH.
2022-10-14 | PXD035263 | Pride
Project description:This SuperSeries is composed of the SubSeries listed below.
2022-10-31 | GSE139841 | GEO
Project description:The mechanisms underlying the progression of non-alcoholic steatohepatitis (NASH) are not completely elucidated. In this study we have integrated gene expression profiling of liver biopsies of NASH patients with translational studies in a mouse model of steatohepatitis and with pharmacological interventions in isolated hepatocytes to identify a novel mechanism implicated in the pathogenesis of NASH. By using high-density oligonucleotide microarray analysis we identified a significant enrichment of known genes involved in the multi-step catalysis of long chain polyunsaturated fatty acids, including delta-5 and 6 desaturases. A combined inhibitor of delta-5 and delta-6 desaturases significantly reduced intracellular lipid accumulation and inflammatory gene expression in isolated hepatocytes. Gas chromatography analysis revealed impaired delta-5 desaturase activity toward the omega-3 pathway in livers from mice with high-fat diet (HFD)-induced NASH. Consistently, restoration of omega-3 index in transgenic fat-1 mice expressing an omega-3 desaturase, which allows the endogenous conversion of omega-6 into omega-3 fatty acids, produced a significant reduction in hepatic insulin resistance, hepatic steatosis, macrophage infiltration and necroinflammatory liver injury, accompanied by attenuated expression of genes involved in inflammation, fatty acid uptake and lipogenesis. These results were comparable to those obtained in a group of mice receiving a HFD supplemented with EPA/DHA. Of interest, hepatocytes from fat-1 mice or supplemented with EPA exhibited synergistic anti-steatotic and anti-inflammatory actions with the delta-5/ delta-6 inhibitor. Conclusion: These findings indicate that both endogenous and exogenous restoration of the hepatic balance between omega-6 and omega-3 fatty acids and/or modulation of desaturase activities exert preventive actions in NASH. The complete database comprised the expression measurements of 18185 genes for liver sample groups: 8 non-alcoholic steatohepatitis (NASH ) and 7 control samples. This dataset is part of the TransQST collection.
2013-04-02 | E-GEOD-37031 | biostudies-arrayexpress
Project description:Current therapeutic strategies for treating non-alcoholic steatohepatitis (NASH) have failed to alleviate liver fibrosis, which is a devastating feature leading to hepatic dysfunction. Here, we integrated single-nucleus transcriptomics and epigenomics to characterize all major liver cell types during NASH development in mice and humans. The bifurcation of hepatocyte trajectory with NASH progression was conserved between mouse and human. At the non-alcoholic fatty liver (NAFL) stage, hepatocytes exhibited metabolic adaptation, whereas at the NASH stage, a subset of hepatocytes was enriched for the signatures of cell adhesion and migration, which was mainly demarcated by receptor tyrosine kinase EphB2. EphB2, acting as a downstream effector of Notch signaling in hepatocytes, was sufficient to induce cell-autonomously inflammation. Knockdown of Ephb2 in hepatocytes ameliorated inflammation and fibrosis in NASH. Thus, EphB2 expressing hepatocytes contribute to NASH progression and may serve as a potential therapeutic target.
2023-02-08 | GSE189600 | GEO
Project description:Background & aimsChronic alcohol consumption is a leading risk factor for the development of hepatocellular carcinoma (HCC), which is associated with a marked increase in hepatic expression of pro-inflammatory IL-17A and its receptor IL-17RA.MethodsGenetic deletion and pharmacological blocking were used to characterize the role of IL-17A/IL-17RA signaling in the pathogenesis of HCC in mouse models and human specimens.ResultsWe demonstrate that the global deletion of the Il-17ra gene suppressed HCC in alcohol-fed diethylnitrosamine-challenged Il-17ra-/- and major urinary protein-urokinase-type plasminogen activator/Il-17ra-/- mice compared with wild-type mice. When the cell-specific role of IL-17RA signaling was examined, the development of HCC was decreased in both alcohol-fed Il-17raΔMΦ and Il-17raΔHep mice devoid of IL-17RA in myeloid cells and hepatocytes, but not in Il-17raΔHSC mice (deficient in IL-17RA in hepatic stellate cells). Deletion of Il-17ra in myeloid cells ameliorated tumorigenesis via suppression of pro-tumorigenic/inflammatory and pro-fibrogenic responses in alcohol-fed Il-17raΔMΦ mice. Remarkably, despite a normal inflammatory response, alcohol-fed Il-17raΔHep mice developed the fewest tumors (compared with Il-17raΔMΦ mice), with reduced steatosis and fibrosis. Steatotic IL-17RA-deficient hepatocytes downregulated the expression of Cxcl1 and other chemokines, exhibited a striking defect in tumor necrosis factor (TNF)/TNF receptor 1-dependent caspase-2-SREBP1/2-DHCR7-mediated cholesterol synthesis, and upregulated the production of antioxidant vitamin D3. The pharmacological blocking of IL-17A/Th-17 cells using anti-IL-12/IL-23 antibodies suppressed the progression of HCC (by 70%) in alcohol-fed mice, indicating that targeting IL-17 signaling might provide novel strategies for the treatment of alcohol-induced HCC.ConclusionsOverall, IL-17A is a tumor-promoting cytokine, which critically regulates alcohol-induced hepatic steatosis, inflammation, fibrosis, and HCC.Lay summaryIL-17A is a tumor-promoting cytokine, which critically regulates inflammatory responses in macrophages (Kupffer cells and bone-marrow-derived monocytes) and cholesterol synthesis in steatotic hepatocytes in an experimental model of alcohol-induced HCC. Therefore, IL-17A may be a potential therapeutic target for patients with alcohol-induced HCC.
| S-EPMC7167339 | biostudies-literature
Project description:<p>Alcoholic hepatitis (AH) is a life-threatening condition characterized by profound hepatocellular dysfunction for which targeted treatments are urgently needed. Identification of molecular drivers is hampered by the lack of suitable animal models. By performing RNA sequencing in livers from patients with different phenotypes of alcohol-related liver disease (ALD), we describe the transcriptional programs involved in disease progression. We uncovered that development of AH is characterized by the defective activity of liver-enriched transcription factors (LETFs). The PPARG predicted activation state was found increased in early forms of ALD, while AH was associated by a marked decrease in HNF4A-dependent gene expression along with a marked expression of the fetal HNF4A isoform (P2). TGFB1, a key upstream transcriptome regulator in AH, induced the use of HNF4a P2 promoter in hepatocytes, which resulted in abnormal bile acid synthesis and defective metabolic and synthetic functions. PPARG agonists partially prevented this effect. We conclude that targeting TGFB1 and epigenetic drivers that modulate HNF4A-dependent gene expression could be beneficial to improve hepatocellular function in patients with AH.</p> <p>The study was conducted thanks to a multicenter collaboration under the National Institute of Alcohol Abuse and Alcoholism (NIAAA)-funded consortium: <b>Integrated Approaches for Identifying Molecular Targets in Alcoholic Hepatitis</b> (InTEAM).</p>
| phs001807 | dbGaP