• Title/Summary/Keyword: pathophysiology

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Epigenetic regulation of key gene of PCK1 by enhancer and super-enhancer in the pathogenesis of fatty liver hemorrhagic syndrome

  • Yi Wang;Shuwen Chen;Min Xue;Jinhu Ma;Xinrui Yi;Xinyu Li;Xuejin Lu;Meizi Zhu;Jin Peng;Yunshu Tang;Yaling Zhu
    • Animal Bioscience
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    • v.37 no.8
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    • pp.1317-1332
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    • 2024

  • Objective: Rare study of the non-coding and regulatory regions of the genome limits our ability to decode the mechanisms of fatty liver hemorrhage syndrome (FLHS) in chickens. Methods: Herein, we constructed the high-fat diet-induced FLHS chicken model to investigate the genome-wide active enhancers and transcriptome by H3K27ac target chromatin immunoprecipitation sequencing (ChIP-seq) and RNA sequencing (RNA-Seq) profiles of normal and FLHS liver tissues. Concurrently, an integrative analysis combining ChIP-seq with RNA-Seq and a comparative analysis with chicken FLHS, rat non-alcoholic fatty liver disease (NAFLD) and human NAFLD at the transcriptome level revealed the enhancer and super enhancer target genes and conservative genes involved in metabolic processes. Results: In total, 56 and 199 peak-genes were identified in upregulated peak-genes positively regulated by H3K27ac (Cor (peak-gene correlation) ≥0.5 and log2(FoldChange) ≥1) (PP) and downregulated peak-genes positively regulated by H3K27ac (Cor (peak-gene correlation) ≥0.5 and log2(FoldChange)≤-1) (PN), respectively; then we screened key regulatory targets mainly distributing in lipid metabolism (PCK1, APOA4, APOA1, INHBE) and apoptosis (KIT, NTRK2) together with MAPK and PPAR signaling pathway in FLHS. Intriguingly, PCK1 was also significantly covered in up-regulated super-enhancers (SEs), which further implied the vital role of PCK1 during the development of FLHS. Conclusion: Together, our studies have identified potential therapeutic biomarkers of PCK1 and elucidated novel insights into the pathogenesis of FLHS, especially for the epigenetic perspective.

  • https://doi.org/10.5713/ab.23.0423 인용 PDF

Inhibitory Action of Phenylpropanoids on Histamine Release from Rat Peritoneal Mast Cells

  • Lee, Jin-Hee;Lee, Ji-Yun;Kim, Youn-Joung;Kim, Tae-Doo;Yoon, Mi-Yun;Sim, Sang-Soo;Kim, Chang-Jong
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.194.1-194.1
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    • 2003

  • Phenylpropanoids originating from vegetable kingdom have some biological activity. In this experiments, effect of phenylpropanoids on the histamine release from mast cells were studied in vitro. Rat peritoneal mast cells were isolated by the discontineous gradients of Percoll and their histamine release by stimulation of compound 48/80 and A23187 at a concentration of 6.0 $\mu\textrm{g}$/$m\ell$ were determined. (omitted)

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