Farnesoid X receptor and fibroblast growth factor 15/19 as pharmacological targets

Syeda Maliha1, Grace L Guo1,2,3,4,5

  • 1Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, USA.

Liver Research
|February 17, 2025
PubMed

Insights

Farnesoid X receptor (FXR) agonists and FGF19 analogs show promise for treating non-alcoholic steatohepatitis (NASH). Research is exploring FXR antagonism as well, with several drug candidates in preclinical and clinical development for this liver disease.

Area of Science:

  • Hepatology
  • Endocrinology
  • Pharmacology

Background:

  • The farnesoid X receptor (FXR) is a nuclear receptor regulating bile acid and cholesterol homeostasis, crucial in liver and intestinal functions.
  • Dysregulation of FXR signaling contributes to non-alcoholic steatohepatitis (NASH), a progressive liver disease with no current FDA-approved treatments.
  • Fibroblast growth factor 15 (FGF15) in mice and FGF19 in humans, an FXR target gene, plays a role in these metabolic pathways.

Purpose of the Study:

  • To review current therapeutic strategies targeting bile acid signaling for non-alcoholic steatohepatitis (NASH).
  • To focus on preclinical and clinical research of FXR agonists and FGF19 analogs in NASH treatment.
  • To evaluate the potential of FXR antagonism as a therapeutic approach for NASH.

Main Methods:

  • Literature review of preclinical studies in mice and clinical trials in humans.
  • Analysis of the role of FXR and its target gene FGF19 in NASH pathogenesis.
  • Evaluation of FXR agonists, FGF19 analogs, and FXR antagonists in NASH treatment.

Main Results:

  • Several synthetic FXR agonists (e.g., OCA, cilofexor) and FGF19 analogs (e.g., NGM282) are in clinical trials for NASH.
  • FXR antagonism using agents like UDCA and Gly-MCA is under preclinical investigation for NASH.
  • Bile acid regulation is a key factor in NASH pathophysiology, making FXR a significant therapeutic target.

Conclusions:

  • FXR modulation, through agonists or antagonists, represents a promising therapeutic avenue for NASH.
  • Targeting bile acid signaling pathways offers potential for treating NASH, a condition with significant unmet medical needs.
  • Ongoing clinical trials will determine the efficacy and safety of FXR-targeted therapies for NASH patients.

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