Effects of ginkgetin on nonalcoholic steatohepatitis (NASH) by single-cell RNA Sequencing (scRNA-Seq).
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ABSTRACT:
PROVIDER: PRJNA988061 | ENA |
REPOSITORIES: ENA
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Project description:Ginkgetin could significantly attenuate NASH in a mouse model induced by high-fat diet, including reducing lipid accumulation in the liver and inhibiting hepatic inflammtion and fibrosis, which was supported by scRNA-Seq.
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Project description:Ginkgetin could significantly attenuate NASH in a mouse model induced by high-fat diet, including reducing lipid accumulation in the liver and inhibiting hepatic inflammtion and fibrosis. In addition, the related signaling pathways and gene expression were also downregulated by ginkgetin by bulk RNA Sequencing analysis.
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Project description:The genomic landscape of hepatic tissue affected by nonalcoholic steatohepatitis (NASH) in severely obese adolescents undergoing bariatric surgery is unknown. Our purpose here was to uncover genomic profiles of obese controls, and obese cases with nonalcoholic fatty liver disease (NAFLD), borderline nonalcoholic steatohepatitis, and definite nonalcoholic steatohepatitis, in order to clarify molecular functions, biological processes, and pathways that are dysregulated in nonalcoholic steatohepatitis in the severely obese adolescent. In a prospective observational cohort study, we have intra-operatively obtained 165 liver samples; of these 67 were submited for microarray analysis. Through ANOVA, we found 8648 genes with differential regulation between the four histologies; from these, we uncovered gene signatures shared between borderline and definite nonalcoholic steatohepatitis, and gene sets with differential effects between borderline and definite.
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Project description:Role of Cyp2b in diet-induced nonalcoholic steatohepatitis (NASH)
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Project description:Nonalcoholic fatty liver disease (NAFLD), a progressive hepatic disease with ectopic fat accumulation, can evolve toward nonalcoholic steatohepatitis (NASH). To date, there is still no approved drug therapy, which remains a major unmet need. Previous study has indicated that tranilast ameliorates hepatic fibrosis and stellate cells activation in dietary rat model of NASH. However, the precise mechanism of tranilast in anti-NASH remains unclear.
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Project description:Non-alcoholic fatty liver disease (NAFLD) is the number one cause of chronic liver disease worldwide, with 25% of these patients developing nonalcoholic steatohepatitis (NASH). NASH significantly increases the risk of cirrhosis and decompensated liver failure. Past studies in rodent models have shown the knockout of glycine-N-methyltransferase (GNMT) results in rapid pro-gression of steatosis, fibrosis, and hepatocellular carcinoma. However, the attenuation of GNMT in subjects with NASH and the molecular basis for its impact on the disease process are still unclear. To address this knowledge gap, we show the reduction of GNMT protein levels in the liver of NASH subjects compared to healthy controls. To gain insight into the impact of decreased GNMT in the disease process, we performed global label-free proteome studies on the livers from a murine Western diet-based model of NASH. Histological and molecular characterization of the animal model demonstrate high resemblance to the human disease.
2022-04-04 | PXD030781 | Pride
Project description:To investigate the role of hepatic CYP2B in diet-induced nonalcoholic steatohepatitis (NASH), a Cyp2b triple knockout mouse lacking Cyp2b9, Cyp2b10, and Cyp2b13 was developed using CRISPER/Cas9. Wildtype (WT) and Cyp2b-null mice were fed a normal diet (ND) or a choline-deficient, L-amino acid-defined high-fat diet (CDAHFD), containing 0.1% methionine and 62% fat for 8 weeks. RNA was extracted from the livers of female and male mice from all treatment groups and used for RNA seqencing. RNAseq data demonstrated that a lack of Cyp2b was protective in female but more harmful in male mice. Hepatic gene expression revealed a higher number of phase I-III xenobiotic metabolism and inflammatory response genes were down-regulated in CDAHFD-fed WT female and Cyp2b-null male mice.
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Project description:Nonalcoholic steatohepatitis (NASH), characterized by hepatic steatosis, inflammation, and liver injury, has become a leading cause of end-stage liver diseases and liver transplantation. Krüppel-like factors 10 (KLF10) is a Cys2/His2 zinc finger transcription factor that regulates cell growth, apoptosis, and differentiation. However, whether it plays a role in the development and progression of chronic liver diseases like NASH remains poorly understood. In the present study, we found that KLF10 expression was selectively upregulated in the mouse models and human patients with NASH, compared with simple steatosis (NAFL). Gain- and loss-of function studies demonstrated that hepatocyte-specific overexpression of KLF10 aggravated, whereas its depletion alleviated diet-induced NASH pathogenesis in mice. Mechanistically, transcriptomic analysis and subsequent functional experiments showed that KLF10 promotes hepatic lipid accumulation and inflammation through the palmitoylation and plasma membrane localization of fatty acid translocase CD36 via transcriptionally activation of zDHHC7. Indeed, both expression of zDHHC7 and palmitoylation of CD36 are required for the pathogenic roles of KLF10 in NASH progression. Thus, our results identify an important role for KLF10 in NAFL-to-NASH development through zDHHC7-mediated CD36 palmitoylation.
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Project description:<p>Nonalcoholic steatohepatitis (NASH) prevalence is rising with no pharmacotherapy approved. A major hurdle in NASH drug development is the poor translatability of preclinical studies to safe/effective clinical outcomes, and recent failures highlight a need to identify new targetable pathways. Dysregulated glycine metabolism has emerged as a causative factor and therapeutic target in NASH. Here, we report that the tripeptide DT-109 (Gly-Gly-Leu) dose-dependently attenuates steatohepatitis and fibrosis in mice. To enhance the probability of successful translation, we developed a nonhuman primate model that histologically and transcriptionally mimics human NASH. Applying a multiomics approach combining transcriptomics, proteomics, metabolomics and metagenomics, we found that DT-109 reverses hepatic steatosis and prevents fibrosis progression in nonhuman primates, not only by stimulating fatty acid degradation and glutathione formation, as found in mice, but also by modulating microbial bile acid metabolism. Our studies describe a highly translatable NASH model and highlight the need for clinical evaluation of DT-109.</p>
2023-04-13 | MTBLS5005 | MetaboLights