Project description:In our study, we constructed a Simple steatosis (NAFL) mouse model with a high-fructose and high-cholesterol (HFHC diet) for 12 weeks. Next, we performed RNA Sequencing analysis to reveal molecular features of Simple steatosis. As a result, we obtained hepatic genome-wide mRNA expression in the livers from two groups of mice (NAFL versus Normal).Using FDR < 0.01 and fold change > 2 as the threshold, we identified 176 differentially expressed genes (DEGs) in the livers of NAFL mice relative to the normal control mice, of which 118 up-regulated and 58 down-regulated. The top 5 up-regulated genes in NAFL mice included the genes encoding for Themis, Cfd, Aqp8, Osbpi3 and Scd1.
Project description:Through mass spectrometry, we quantified liver global proteomes of Simple steatosis and Non-alcoholic Steatohepatitis in a HFHC diet induced mouse model
Project description:In our study, C57BL/6 male mice were fed a normal chow diet or high-fat diet additionally containing high-fructose and high-cholesterol (HFHC diet) for 12 weeks and 28 weeks to construct simple steatosis (NAFL) and Non-alcoholic steatohepatitis (NASH) models respectively. Through miRNA sequencing, 420 miRNAs were detected. A total of 148 miRNAs (14 up-regulated and 34 down-regulated) and 146 miRNAs (74 up-regulated and 72 down-regulated) were differentially expressed in livers of NAFL and NASH mice, respectively. A total of 36 miRNAs (8 up-regulated; 28 down-regulated) were dysregulated in both NASH and NAFL mice, while 110 miRNAs (66 up-regulated; 44 down-regulated) were altered specifically in NASH mice.
Project description:In our study, C57BL/6 male mice were fed a normal chow diet or high-fat diet additionally containing high-fructose and high-cholesterol (HFHC diet) for 12 weeks and 28 weeks to construct simple steatosis (NAFL) and Non-alcoholic steatohepatitis (NASH) models respectively. Through lncRNA sequencing, a total of 1131 lncRNAs (798 up-regulated and 333 down-regulated) and 5161 lncRNAs (3168 up-regulated and 1993 down-regulated) were differentially expressed in livers of NAFL and NASH mice respectively. A total of 614 lncRNAs (455 up-regulated and 159 down-regulated) were dysregulated in both NASH and NAFL mice, while 4547 lncRNAs (2713 up-regulated; 1834 down-regulated) were altered specifically in NASH mice.
Project description:We found that deleting Pten in Albumin expressing cells results in liver steatosis as early as 1 month of age. The mice develop hyperplasia and tumor phenotypes starting at 7-8 months of age. At 12 months and beyond, all mice develope spontanous liver tumors of mixed lineage phenotypes dihydrocollidine (DDC) shows that the primary effect of AKT2 loss is attenuation of hepatic injury and not inhibition of progenitor cell proliferation in response to injury. Pten is deleted specifically in the liver (Pten loxP/loxP; Alb-Cre+). Liver tissues were analyzed at 3 months (steatosis stage) and 15 months (tumor stage)
Project description:IκBζ is a transcriptional regulator that augments inflammatory responses from the Toll-like receptor or interleukin signaling. These innate immune responses contribute to the progression of nonalcoholic fatty liver disease (NAFLD); however, the role of IκBζ in the pathogenesis of NAFLD remains elusive. We investigated whether IκBζ was involved in the progression of NAFLD in mice. We generated hepatocyte-specific IκBζ-deficient mice (Alb-Cre; Nfkbizfl/fl) by crossing Nfkbizfl/fl mice with Alb-Cre transgenic mice. NAFLD was induced by feeding the mice a choline-deficient, L-amino acid-defined, high-fat diet (CDAHFD). CDAHFD-induced IκBζ expression in the liver was observed in Nfkbizfl/fl mice, but not in Alb-Cre; Nfkbizfl/fl mice. Contrary to our initial expectation, IκBζ deletion in hepatocytes accelerated the progression of NAFLD after CDAHFD treatment. Although the increased expression of inflammatory cytokines and apoptosis-related proteins by CDAHFD remained unchanged between Nfkbizfl/fl and Alb-Cre; Nfkbizfl/fl mice, early-stage steatosis of the liver was significantly augmented in Alb-Cre; Nfkbizfl/fl mice. Overexpression of IκBζ in hepatocytes via the adeno-associated virus vector attenuated liver steatosis caused by the CDAHFD in wild-type C57BL/6 mice. This preventive effect of IκBζ overexpression on steatosis was not observed without transcriptional activity. Microarray analysis revealed a correlation between IκBζ expression and the changes of factors related to triglyceride biosynthesis and lipoprotein uptake. Our data suggest that hepatic IκBζ attenuates the progression of NAFLD possibly through the regulation of the factors related to triglyceride metabolism.