Notch activity determines a common hepatocellular carcinoma subtype with unique molecular and clinicopathologic features [Venus]
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE154550 | GEO | 2020/09/28
REPOSITORIES: GEO
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Project description:Hepatocellular carcinoma (HCC) is the predominant primary liver cancer and an increasing cause of cancer-related deaths worldwide, due in part through increased obesity-associated nonalcoholic steatohepatitis (NASH) and associated fibrosis. The Notch signaling pathway is inappropriately “reactivated” in hepatocytes in obesity and plays an active role in the pathogenesis of NASH-associated fibrosis. We aimed to understand the involvement of Notch in the pathogenesis of mouse and human HCC.
2020-09-28 | GSE154551 | GEO
Project description:Hepatocellular carcinoma (HCC), which accounts for 90% of all primary livers tumors, is the fourth most common cancer in the world. The development of HCC is a long-term and complex process, and uncovering the molecular mechanisms associated with HCC development is critical for the disease diagnosis, prevention, and treatment. Exploring these mechanisms using human HCC samples is desirable, but frequently impractical, with a number of limitations and shortcomings. The STAMTM (Stelic Institute & Co, Tokyo, Japan) mouse model of NASH-associated liver carcinogenesis is considered a useful and relevant model for investigating the molecular pathogenesis of NASH-derived HCC. This model resembles the human HCC development associated with progression from simple steatosis to NASH, fibrosis, and HCC. In the present study, by using high-throughput whole genome microarrays (SurePrint G3 Mouse Gene Expression v2, 8x60K; Agilent Technologies, Santa Clara, CA), we examined the transcriptomic profiles in the livers of STAMTM mice at different stages of liver carcinogenesis, including steatosis (6 week time interval), NASH (8 weeks), fibrotic stage (12 weeks), and in full-fledged HCC (20 weeks). The results of microarray analyses showed significant progressive changes in hepatic gene expression during the development of HCC. A total of 970, 1462, 2742, and 2857 of differentially expressed genes were identified in the livers at 6, 8, 12, and 20 weeks, respectively. Detailed analysis of these differentially expressed genes will benefit the understanding of the underlying mechanisms of non-alcoholic fatty liver disease-derived HCC. Transcriptomic profile in the liver of STAM mice at 6 weeks (steatosis; n=3), 8 weeks (steatohepatitis; n=3) 12 weeks (fibrosis; n=4) and 20 weeks (HCC-stage tumor tissue, n=4) weeks. Age-matched control samples were also analyzed.
2016-06-22 | E-GEOD-83596 | biostudies-arrayexpress
Project description:The lack of a preclinical model of nonalcoholic steatohepatitis (NASH) and hepatocellular cancer (HCC) that recapitulates human disease is a major barrier to therapeutic development. We report a high fat-high sugar diet-induced NASH and HCC in a stable isogenic 129S1/SvImJ crossed with C57Bl/6J mice. Following diet initiation, there was sequential development of steatosis (4-8 weeks), steatohepatitis with ballooning and Mallory-Denk bodies (12-16 weeks), progressive fibrosis (16 week onwards) and spontaneous HCC (32-52 weeks). The mice developed obesity, insulin resistance and dyslipidemia. There was concordance with the human NASH transcriptome (FDR 0.001) with activation of lipogenic, inflammatory and apoptotic pathways relevant in humans. The HCC gene signature resembled S1 and S2 human HCC subclass (FDR 0.01 for both). This simple model of NASH and HCC that resembles human disease in terms of its triggers, physiological and biochemical parameters, histology, transcriptomic profile, and outcomes can facilitate preclinical development for these conditions. 129S1/SvImJ;C57Bl/6J (129/B6) mice were fed with high-fat diet (Western Diet) and high fructose-glucose solution (Sugar Water) (WD SW) or chow diet (CD) for 52 weeks, and total RNA samples were isolated from liver and tumor tissues for genome-wide expression profiling.
2016-07-25 | E-GEOD-67679 | biostudies-arrayexpress
Project description:The lack of a preclinical model of nonalcoholic steatohepatitis (NASH) and hepatocellular cancer (HCC) that recapitulates human disease is a major barrier to therapeutic development. We report a high fat-high sugar diet-induced NASH and HCC in a stable isogenic 129S1/SvImJ crossed with C57Bl/6J mice. Following diet initiation, there was sequential development of steatosis (4-8 weeks), steatohepatitis with ballooning and Mallory-Denk bodies (12-16 weeks), progressive fibrosis (16 week onwards) and spontaneous HCC (32-52 weeks). The mice developed obesity, insulin resistance and dyslipidemia. There was concordance with the human NASH transcriptome (FDR 0.001) with activation of lipogenic, inflammatory and apoptotic pathways relevant in humans. The HCC gene signature resembled S1 and S2 human HCC subclass (FDR 0.01 for both). This simple model of NASH and HCC that resembles human disease in terms of its triggers, physiological and biochemical parameters, histology, transcriptomic profile, and outcomes can facilitate preclinical development for these conditions. 129S1/SvImJ;C57Bl/6J (129/B6) mice were fed with high-fat diet (Western Diet) and high fructose-glucose solution (Sugar Water) (WD SW) or chow diet (CD) for 8 weeks, and total RNA samples were isolated from liver tissues for genome-wide expression profiling.
2016-07-25 | E-GEOD-67678 | biostudies-arrayexpress
Project description:Non-alcoholic fatty liver disease is now considered the most common form of chronic liver disease. It is a complex metabolic disease that silently progresses into non-alcoholic steatohepatitis (NASH). In fact, NASH is the tipping point for pericellular fibrosis, cirrhosis and hepatocellular carcinoma (HCC). Despite being a complex metabolic disease, identification of the metabolic readout that functions in metabolic pathway perpetuation for HCC progression from NASH is still incompletely understood. With the aid of LC MS/MS this study unveiled the metabolic fingerprint of NASH and HCC-NASH patients and it illustrates a detailed map for the most predominant reprogrammed metabolic pathways that target HCC development from NASH. https://doi.org/10.3390/ijms24010210
2021-08-19 | MSV000088003 | MassIVE
Project description:Nonalcoholic steatohepatitis (NASH), characterized by inflammation and fibrosis, is emerging as a leading etiology of hepatocellular carcinoma (HCC). However, the mechanisms underlying the pathogenesis of NASH are not well understood. Here, we show that membrane phospholipid (PL) composition determined by a remodeling process modulates the progression of NASH. The expression of lysophosphatidylcholine acyltransferase 3 (LPCAT3), a PL remodeling enzyme that produces polyunsaturated PLs, is dramatically suppressed in human NASH livers compared to controls. LPCAT3 expression is inversely correlated with NAFLD activity score and fibrosis stage. Loss of Lpcat3 in mouse liver promotes the development of both spontaneous and diet-induced NASH/HCC. Mechanistically, Lpcat3 deficiency increases reactive oxygen species production, likely due to impaired mitochondrial homeostasis as demonstrated by reduced mitochondrial DNA content and fragmented mitochondrial morphology. Overexpressing Lpcat3 in the liver ameliorates inflammation and fibrosis of NASH. These results suggest that manipulating LPCAT3 expression may be an effective therapeutic strategy for NASH.
2024-06-05 | GSE218074 | GEO
Project description:Nonalcoholic steatohepatitis (NASH), characterized by inflammation and fibrosis, is emerging as a leading etiology of hepatocellular carcinoma (HCC). However, the mechanisms underlying the pathogenesis of NASH are not well understood. Here, we show that membrane phospholipid (PL) composition determined by a remodeling process modulates the progression of NASH. The expression of lysophosphatidylcholine acyltransferase 3 (LPCAT3), a PL remodeling enzyme that produces polyunsaturated PLs, is dramatically suppressed in human NASH livers compared to controls. LPCAT3 expression is inversely correlated with NAFLD activity score and fibrosis stage. Loss of Lpcat3 in mouse liver promotes the development of both spontaneous and diet-induced NASH/HCC. Mechanistically, Lpcat3 deficiency increases reactive oxygen species production, likely due to impaired mitochondrial homeostasis as demonstrated by reduced mitochondrial DNA content and fragmented mitochondrial morphology. Overexpressing Lpcat3 in the liver ameliorates inflammation and fibrosis of NASH. These results suggest that manipulating LPCAT3 expression may be an effective therapeutic strategy for NASH.
2024-06-05 | GSE218073 | GEO
Project description:Non-alcoholic steatohepatitis (NASH), which is increasing in incidence due to the obesity epidemic, is a T-cell mediated, auto-aggressive condition that can result in progressive liver disease and hepatocellular carcinoma (HCC). The gut-liver axis contributes to NASH, yet mechanisms underlying metabolic T-cell activation and NASH-related fibrosis have largely remained elusive. We found that gastrointestinal B-cells are activated and increased in number in mouse/human NASH, allowing metabolic T-cell activation to induce NASH antigen- and microbiota-independently. Genetic/therapeutic depletion of B-cells systemically or of gastrointestinal B-cells specifically, prevented or reverted NASH and fibrosis. Secretion of immunoglobulins was essential for NASH and fibrosis development. IgA secretion was necessary for fibrosis-induction by activating CD11b+CCR2+F4/80+CD11c-FCGR1+ hepatic myeloid cells through an IgA-FcRγ signaling-axis. Furthermore, clinical/molecular analyses from NASH-patients demonstrated IgA and activated FcRγ+ hepatic myeloid cells to correlate with the degree of liver-fibrosis. Thus, gastrointestinal B-cells and the IgA-FcRγ signaling-axis on hepatic myeloid cells represent potential therapeutic targets to treat NASH.
2023-11-22 | GSE190204 | GEO
Project description:Limb expression 1-like protein (LIX1L) plays important role in various liver disorders, but its role and underlying mechanism in nonalcoholic hepatitis (NASH) and HCC progression remains obscure. Here, we report that LIX1L functions as a key integrative regulator linking lipid metabolism and inflammation, adipose tissue dysfunction and hepatic microenvironment reprogramming which promotes NASH progression. LIX1L significantly upregulated in NAFLD/NASH patients, mouse models and palmitic acid-stimulated hepatocytes. Lix1l deletion inhibits lipid deposition, inflammatory response and fibrosis in liver as well as adipocyte differentiation by downregulation of fatty acid translocase CD36 expression, alleviating NASH and associated HCC progression. In contrast, adeno-associated virus (AAV)-mediated LIX1L overexpression exacerbates NASH progression in mice. Mechanistically, metabolic stress promotes PARP1 mediated poly-ADP-ribosylation (PARylation) of LIX1L, subsequently increasing the stability and RNA binding ability of LIX1L protein. LIX1L binds to AU-rich element (ARE) in the 3’ untranslated region (UTR) of CD36 mRNA, thus attenuating CD36 mRNA decay. In NASH and associated HCC mouse models, LIX1L deficiency-mediated downregulation of CD36 suppresses adipogenesis, hepatic lipid uptake, and reprograms the tumor-prone liver microenvironment with increased cytotoxic T lymphocytes (CTLs), reduced immunosuppressive cell proportions. These data indicate a systematic function of LIX1L in the pathogenesis of NASH and underscore the PARP1/LIX1L/CD36 axis as a potential target for treatment of NASH and associated HCC.
2024-04-25 | GSE264479 | GEO
Project description:The lack of a preclinical model of nonalcoholic steatohepatitis (NASH) and hepatocellular cancer (HCC) that recapitulates human disease is a major barrier to therapeutic development. We report a high fat-high sugar diet-induced NASH and HCC in a stable isogenic 129S1/SvImJ crossed with C57Bl/6J mice. Following diet initiation, there was sequential development of steatosis (4-8 weeks), steatohepatitis with ballooning and Mallory-Denk bodies (12-16 weeks), progressive fibrosis (16 week onwards) and spontaneous HCC (32-52 weeks). The mice developed obesity, insulin resistance and dyslipidemia. There was concordance with the human NASH transcriptome (FDR 0.001) with activation of lipogenic, inflammatory and apoptotic pathways relevant in humans. The HCC gene signature resembled S1 and S2 human HCC subclass (FDR 0.01 for both). This simple model of NASH and HCC that resembles human disease in terms of its triggers, physiological and biochemical parameters, histology, transcriptomic profile, and outcomes can facilitate preclinical development for these conditions.
2016-07-25 | GSE67679 | GEO