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A First-in-Class Hepatocyte Nuclear Factor 4 Agonist.

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|May 8, 2025
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This summary is machine-generated.

Researchers developed novel high-affinity agonists for Hepatocyte Nuclear Factor 4 (HNF4), a key protein in metabolic regulation. These HNF4 activators offer a new chemical tool for studying metabolic diseases like diabetes.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pharmacology

Background:

  • Hepatocyte nuclear factor 4 (HNF4) is a nuclear receptor crucial for gene expression in pancreatic islets and regulating glucose/lipid metabolism in the liver.
  • Mutations in HNF4α cause maturity-onset diabetes of the young 1 (MODY-1), highlighting HNF4 as a therapeutic target for metabolic disorders.
  • The lack of suitable ligands has impeded the development and validation of HNF4 as a therapeutic target.

Purpose of the Study:

  • To develop the first high-affinity agonists for HNF4.
  • To explore and validate HNF4 as a therapeutic target for metabolic diseases.
  • To create a chemical tool for studying HNF4 biology.

Main Methods:

  • Fragment screening and systematic structure-activity relationship (SAR) elucidation.
  • Chemical synthesis and structural modification of lead compounds.
  • X-ray crystallography to determine ligand binding mode.

Main Results:

  • Development of novel HNF4 agonists with high affinity.
  • Tuning of the chemical scaffold to achieve both HNF4 agonism and inverse agonism.
  • X-ray structures revealed orthosteric binding site occupation, mimicking natural fatty acid ligands.
  • The most potent derivative showed low nanomolar HNF4 agonist potency and binding affinity with favorable selectivity.

Conclusions:

  • The developed HNF4 agonists represent a significant advancement in ligand discovery for this nuclear receptor.
  • These novel compounds serve as valuable chemical tools for in-depth investigation of HNF4's role in metabolic regulation.
  • The findings support the therapeutic potential of targeting HNF4 for metabolic diseases, including diabetes.