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LncRNA changes in the livers of NAFLD patients compared with that of healthy control

ABSTRACT: lncRNA changes in the livers of NAFLD patients compared with that of healthy control

PROVIDER: PRJNA419755 | ENA |

REPOSITORIES: ENA

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lncRNA changes in the livers of NAFLD patients compared with that of healthy control

Project description:RNA was isolated from the mixed samples of liver tissues from 5 liver tissues from NAFLD patients and 5 healthy controls. Total RNA was reverse-transcribed with biotin end-labeled random oligonucleotide primers.

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Project description:To investigate the function of miRNAs in liver, we obtained liver tissues from nonsteatotic individuals and fatty livers from patients with nonalcoholic fatty liver disease (NAFLD). Patients due to excessive alcohol consumption, autoimmune liver disease, viral hepatitis and diabetes were excluded. Nonsteatotic livers were collected from the normal region of the livers from donors who received liver resection due to liver hemangioma, and were defined as those with NASH activity scores of 0 We then performed miRNA sequencing using livers from two NAFLD patients and two nonsteatotic individuals.

2023-03-12 | GSE227021 | GEO

Hepatocypte-specific Caveolin-1 knockout livers

Project description:mRNA expression was compared between wild type and hepatocyte-specific caveolin-1 knockout livers in healthy and non-alcoholic fatty liver disease (NAFLD) mice mRNA expression was compared between gender

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miRNA profiling in human nonsteatotic and NAFLD livers

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Transcriptional analysis of non-fibrotic NAFLD progression

Project description:Background & Aims: Non-alcoholic steatohepatitis (NASH), a subtype of non-alcoholic fatty liver disease (NAFLD) that can lead to fibrosis, cirrhosis, and hepatocellular carcinoma, is characterized by hepatic inflammation. Despite evolving therapies aimed to ameliorate inflammation in NASH, the transcriptional changes that lead to inflammation progression in NAFLD remain poorly understood. The aim of this study is to define transcriptional changes in early, non-fibrotic NAFLD using a biopsy-proven non-fibrotic NAFLD cohort. Methods: We extracted RNA from liver tissue of 40 patients with biopsy-proven NAFLD based on NAFLD Activity Score (NAS) (23 with NAS ≤3, 17 with NAS ≥5) and 21 healthy controls and compared changes in expression of 594 genes involved in innate immune function. Results: Compared to healthy controls, NAFLD patients with NAS ≥5 had differential expression of 211 genes, while those with NAS ≤3 had differential expression of only 14 genes. Notably, osteopontin (SPP1) (3.74-fold in NAS ≤3, 8.28-fold in NAS ≥5) and CXCL10 (2.27-fold in NAS ≤3, 8.28-fold in NAS ≥5) gene expression were significantly upregulated with histologic progression of NAFLD.

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TREM2 sustains macrophage-hepatocyte metabolic coordination in NAFLD and sepsis [Human_liver_RNA_seq]

Project description:The goals of this study are to investigate whether the defects of energy metabolism and/or mitochondria occurs in Nonalcoholic fatty liver disease (NAFLD), we performed liver transcriptome analysis from livers of donors who underwent organ donation after cardiac death (DCD; 6 non-NAFLD donors, 5 NAFLD donors). In this screen, a cluster of 462 transcripts were up-regulated and 447 transcripts were down-regulated in response to NAFLD. Among these differentially expressed genes , gene sets that contribute to endoplasmic reticulum stress, intrinsic apoptosis and cytokine production were enriched in NAFLD livers, whereas lipid metabolic process were suppressed in NAFLD livers, accompanied with deficient expression of the mitochondrial matrix enzyme.

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Hepatic mitochondrial proteome dynamics in NAFLD mice

Project description:Nonalcoholic fatty liver disease (NAFLD) is associated with hepatic mitochondrial dysfunction characterized by reduced ATP synthesis. We applied the 2H2O-metabolic labeling approach to test the hypothesis that the reduced stability of oxidative phosphorylation proteins contributes to mitochondrial dysfunction in a diet-induced mouse model of NAFLD. A high fat diet containing cholesterol (a so-called Western diet (WD)) led to hepatic oxidative stress, steatosis, inflammation and mild fibrosis, all markers of NAFLD, in LDLR-/- mice. In addition, compared to controls, livers from NAFLD mice had reduced citrate synthase activity and ATP content, suggesting reduced mitochondrial oxidative capacity. Proteome dynamics analysis revealed that mitochondrial dysfunction is associated with reduced average half-lives of mitochondrial proteins in NAFLD mice (5.41±0.46 vs. 5.15±0.49 day, P<0.05). In particular, the WD reduced stability of oxidative phosphorylation subunits, including cytochrome c oxidase subunit 4 isoform 1 of complex III (5.9 ± 0.1 vs 3.4 ± 0.8 day), ATP synthase subunit α (6.3±0.4 vs. 5.5±0.4 day) and ATP synthase F(0) complex subunit B1 of complex V (8.5±0.6 vs. 6.5±0.2 day) (P<0.05). These changes were associated with impaired complex III and F0F1-ATP synthase activities, suggesting that increased degradation of mitochondrial proteins contributed to hepatic mitochondrial dysfunction in NAFLD mice. Autophagy, but not proteasomal degradation, contributed to increased clearance of hepatic mitochondrial proteins in NAFLD mice. In conclusion, the proteome dynamics approach suggests that alterations in mitochondrial proteome dynamics is involved in hepatic mitochondrial dysfunction in NAFLD.

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Project description:To investigate the mechanism of hepatic Activin A and Gpnmb in NAFLD/NASH, we studied C57BL/6J mice on a FPC NASH diet and sugar water for 16 weeks, compared with standard chow diet, and used adeno-associated viral vectors with a liver-specific thyroxine binding globulin (TBG) promoter to express Activin A or GFP (control), or AAV8-H1-shRNA to knockdown of Gpnmb or scramble control in NAFLD/NASH liver. We then performed gene expression profiling analysis using data obtained from RNA-seq of 3 different livers in each group.

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Transcriptomic analysis reveals sex specific genes similar to human NAFLD associated with transgenerational NAFLD

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