DNA methylation analysis of liver samples from healthy individuals and patients with advanced metabolic dysfunction associated steatohepatitis (MASH)
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ABSTRACT:
PROVIDER: PRJNA1007758 | ENA |
REPOSITORIES: ENA
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Project description:To investigate MASH-associated changes in DNA-methylation, a genome-wide DNA methylation profiling of livers from healthy individuals compared to those with MASH was performed using the 850K MethylationEPIC BeadChip Array. Further differential methylation analysis allowed us to identify a MASH epigenetic signature. Both males and females were included in this cohort, consisting of 4 MASH patients and 3 healthy individuals.
2024-03-01 | GSE241366 | GEO
Project description:We explore whether a low-energy diet intervention for Metabolic dysfunction-associated steatohepatitis (MASH) improves liver disease by means of modulating the gut microbiome. 16 individuals were given a low-energy diet (880 kcal, consisting of bars, soups, and shakes) for 12 weeks, followed by a stepped re-introduction to whole for an additional 12 weeks. Stool samples were obtained at 0, 12, and 24 weeks for microbiome analysis. Fecal microbiome were measured using 16S rRNA gene sequencing. Positive control (Zymo DNA standard D6305) and negative control (PBS extraction) were included in the sequencing. We found that low-energy diet improved MASH disease without lasting alterations to the gut microbiome.
2024-12-31 | E-MTAB-14061 | biostudies-arrayexpress
Project description:Reliable non-invasive tools to diagnose at risk metabolic dysfunction-associated steatohepatitis (MASH) are urgently needed to improve management. We developed a risk stratification score incorporating proteomics-derived serum markers with clinical variables to identify high risk MASH patients (NAFLD Activity Score (NAS) >4 and fibrosis score >2). In this three-phase proteomic study of biopsy-proven metabolic dysfunction-associated steatotic fatty liver disease (MASLD), we first developed a multi-protein predictor for discriminating NAS>4 based on SOMAscan proteomics quantifying 1,305 serum proteins from 57 US patients. Four key predictor proteins were verified by ELISA in the expanded US cohort (N=168), and enhanced by adding clinical variables to create the 9-feature MASH Dx Score which predicted MASH and also high risk MASH (F2+). The MASH Dx Score was validated in two independent, external cohorts from Germany (N=139) and Brazil (N=177). The discovery phase identified a 6-protein classifier that achieved an AUC of 0.93 for identifying MASH. Significant elevation of four proteins (THBS2, GDF15, SELE, IGFBP7) was verified by ELISA in the expanded discovery and independently in the two external cohorts. MASH Dx Score incorporated these proteins with established MASH risk factors (age, BMI, ALT, diabetes, hypertension) to achieve good discrimination between MASH and MASLD without MASH (AUC:0.87- discovery; 0.83- pooled external validation cohorts), with similar performance when evaluating high risk MASH F2-4 (vs. MASH F0-1 and MASLD without MASH). The MASH Dx Score offers the first reliable non-invasive approach combining novel, biologically plausible ELISA-based fibrosis markers and clinical parameters to detect high risk MASH in patient cohorts from the US, Brasil and Europe.
2023-12-22 | GSE251855 | GEO
Project description:Metabolic dysfunction-associated steatohepatitis (MASH) is an advanced form of metabolic dysfunction-associated steatotic liver disease (MASLD) characterized by accumulation of fats in liver, chronic inflammation, hepatocytic ballooning, and fibrosis. This study investigates role of endogenous Aryl hydrocarbon Receptor (AhR) agonist, cinnabarinic acid (CA) in protection against in vivo mouse model of MASH. To analyze the transcriptomic changes in response to CA treatment, male AhRfl/fl (AhR-floxed) mice were subjected to control diet (CD), high-fat high-fructose high-cholesterol diet (MASH diet, MD), and fed with MASH diet and treated with CA thrice a week for 20-week period. RNA sequencing revealed altered expression of multiple genes involved in fatty acid metabolism and inflammation in response to CA treatment. Gene set enrichment analysis indicated enrichment of AMPK among other kinases. Subsequent immunoblotting and immunofluorescence studies performed on CA-treated livers and primary hepatocytes confirmed activated AMPK signaling. Moreover, in a hepatocyte-specific AhR knockout mice livers (AhR-hKO, constructed by crossing AhRfl/fl with alb-Cre), CA failed to phosphorylate AMPK strongly indicating that CA-induced AMPK mediated protection against lipotoxicity in MASH is dependent on hepatic AhR signaling.
2025-07-23 | GSE277498 | GEO
Project description:We examined the potential utility of L-carnitine for alleviating metabolic dysfunction-associated steatohepatitis (MASH) and preventing the development of hepatocellular carcinoma. Short-term L-carnitine administration ameliorated MASH through its anti-inflammatory effects.
2024-04-24 | GSE261938 | GEO
Project description:Modulation of metabolic, inflammatory, and fibrotic pathways by semaglutide in metabolic dysfunction-associated steatohepatitis Metabolic dysfunction-associated steatohepatitis (MASH) is a chronic liver disease strongly associated with cardiometabolic risk factors. Semaglutide, a glucagon-like peptide-1 receptor agonist, improves liver histology in MASH, but the underlying signals and pathways driving semaglutide-induced MASH resolution are not well understood. We show that, in two preclinical MASH models, semaglutide improved histological markers of fibrosis and inflammation, and reduced hepatic expression of fibrosis- and inflammation-related gene pathways.
2025-04-25 | GSE294629 | GEO
Project description:Background & Aims: Chronic HBV patients with concomitant metabolic dysfunction-associated steatohepatitis (MASH) have been shown to develop more advanced fibrosis faster with more severe liver disease as compared to patients with chronic HBV alone. However, our understanding of the underlying mechanisms is limited. Here we study how MASH co-morbidity impact immune activity in the liver of patients with chronic HBV infection. Methods: Bulk RNA sequencing was performed on liver biopsies from patients with only MASH (n=10), only HBeAg-negative chronic HBV (ENEG; n=11), combined MASH/ENEG (n=9) and healthy controls (n=9). Biopsies with no or minimal fibrosis (≤F2) were selected to avoid confounding effects of fibrosis. We compared whole transcriptome data from patients with MASH/ENEG to those with ENEG alone to determine the impact of MASH co-morbidity on chronic hepatitis B. Results: There is a high degree of overlap of liver gene expression profiles in patients with only ENEG versus those with only MASH compared to healthy controls, suggesting a largely shared mechanism of liver dysfunction and immune activity for these distinct conditions. In patients with ENEG, MASH co-morbidity significantly reduced interferon pathway activity (NES=2.03, p.adj=0.0251), the expression of ISGs (e.g., IFIT2, IFI27, IFITM1, IFI6), and macrophage gene signatures (e.g., MARCO, CD163, CD5L, CD63), when compared to patients with ENEG alone. Conclusions: Transcriptomic profiling of the liver suggests that MASH negatively impacts ISGs expression in the liver of patients with ENEG, which may affect antiviral immune pathways, viral replication and inflammatory responses resulting in an increased risk of advanced fibrosis in patients with chronic hepatitis B. Our study provides valuable insights for guiding future research aimed at developing effective, tailored strategies for managing patients with both conditions.
2024-10-31 | GSE274114 | GEO
Project description:Metabolic dysfunction–associated steatohepatitis (MASH), marked by hepatic steatosis and inflammation, is a major risk for cirrhosis and liver cancer. Obesity-induced oxidative stress plays a central role in MASH promoting protein damage and dysfunction. Cysteine persulfidation (PSSH), a post-translational modification regulated by hydrogen sulfide (H2S), is involved in protein stability and cellular protection. However, the role of PSSH in MASH is poorly understood. We found that H2S-producing enzymes are downregulated in livers with fibrosis and inflammation, leading to decreased hepatic PSSH. Using dimedone-switch-based mass spectrometry, we mapped the alterations in the liver persulfidome during diet-induced fibrosis and inflammation. While the levels of H2S-producing enzymes dropped, some proteins, including protein tyrosine phosphatases (PTPs) and redox regulators, showed increased PSSH. This change suggests that H2S-mediated persulfidation helps protect proteins from oxidative damage. Overall, decreased H2S enzyme expression and reduced PSSH may impair protection against oxidative stress, contributing to liver dysfunction in obesity.
2025-08-04 | PXD057932 | Pride
Project description:Serum Protein Risk Stratification Score for Diagnostic Evaluation of Metabolic Dysfunction-Associated Steatohepatitis (MASH)
| PRJNA1055558 | ENA
Project description:Metabolic dysfunction-associated steatohepatitis is a form of chronic liver inflammation associated with metabolic syndrome, such as obesity and a major cause of hepatocellular carcinoma. Multi-biotics, a soymilk fermented with lactic acid bacteria, are known to alleviate obesity by lowering lipid profile. In this study, we investigated efficacy of multi-biotics in MASH-related HCC using mouse model fed choline-deficient L-amino acid-defined high-fat diet, and determined that tumor regression was not affected by multi-biotics. We established mouse MASH-related HCC organoids, and performed RNA-sequencing to identify transcriptomic features in MASH-HCC treated multi-biotics. We also examined response of MASH-related HCC to four HCC treatment drugs, and MASH-related HCC treated multi-biotics was good response to Lenvatinib. We established Lenvatinib-resistant MASH-related HCC organoids by administrating repeatedly Lenvatinib, and identified enriched pathways in Lenvatinib-resistant models. This study provides a tool for studying MASH-related HCC treatment and Lenvatinib resistance by establishing the MASH-related HCC and Lenvatinib resistance organoid model.
2024-10-17 | GSE272024 | GEO