The pharmacodynamic and differential gene expression analysis of PPAR α/δ agonist GFT505 in CDAHFD-induced NASH model

Linfu Liu1,2, Chuang Liu1,2, Manyu Zhao1

  • 1West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China.

Plos One
|December 16, 2020
PubMed

Insights

Dual peroxisome proliferator-activated receptor α/δ (PPAR α/δ) agonists like elafibranor show promise for non-alcoholic steatohepatitis (NASH). This study reveals elafibranor

Area of Science:

  • * Pharmacology
  • * Molecular Biology
  • * Gastroenterology

Background:

  • * Non-alcoholic steatohepatitis (NASH) is a complex liver disease with limited treatment options.
  • * Peroxisome proliferator-activated receptor α/δ (PPAR α/δ) are key regulators of glucolipid metabolism and inflammation, representing a promising therapeutic target for NASH.
  • * Dual PPAR α/δ agonists, such as elafibranor (GFT505), have shown potential in clinical trials for NASH treatment.

Purpose of the Study:

  • * To investigate the pharmacodynamics and transcriptome regulation of the dual PPAR α/δ agonist elafibranor (GFT505) in a mouse model of NASH.
  • * To elucidate the molecular mechanisms underlying the therapeutic effects of elafibranor in NASH.
  • * To identify key genes and pathways modulated by elafibranor treatment in NASH.

Main Methods:

  • * Establishment of a choline-deficient, L-amino acid-defined, high-fat diet (CDAHFD) induced NASH mouse model.
  • * Treatment of NASH mice with elafibranor (GFT505).
  • * Comprehensive analysis using RNA-sequencing to profile transcriptome changes and RT-qPCR to validate key differentially expressed genes.

Main Results:

  • * Elafibranor (GFT505) significantly ameliorated hepatic steatosis, inflammation, and fibrosis in CDAHFD-induced NASH mice.
  • * RNA-sequencing identified 3995 up-regulated and 3576 down-regulated genes following elafibranor treatment.
  • * Key genes involved in glucolipid metabolism, inflammation, and fibrosis pathways were significantly modulated, with enrichment analysis highlighting PPAR signaling and fatty acid degradation pathways (up-regulated) and cytokine-cytokine receptor and ECM-receptor interaction pathways (down-regulated).

Conclusions:

  • * Elafibranor (GFT505) demonstrates significant therapeutic efficacy in a preclinical NASH model by modulating key metabolic, inflammatory, and fibrotic pathways.
  • * The study provides a detailed transcriptomic profile of elafibranor's action, offering insights into its mechanism of action in NASH.
  • * These findings support further investigation into dual PPAR α/δ agonists as a therapeutic strategy for NASH.