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CBFA2T3 Is PPARA Sensitive and Attenuates Fasting-Induced Lipid Accumulation in Mouse Liver

  • 0Division of Functional Food Research, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea.
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May 24, 2024

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May 24, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Hepatic CBFA2T3, a PPARA-sensitive gene, modulates liver metabolic stress. Its absence in mice increases insulin resistance and lipid accumulation, highlighting its role in metabolic homeostasis.

Area Of Science

  • Metabolic regulation
  • Gene expression
  • Hepatology

Background

  • Peroxisome proliferator-activated receptor alpha (PPARA) is crucial for liver lipid metabolism and metabolic stress response.
  • CBFA2T3, a transcription factor, is linked to acute myeloid leukemia, but its role in metabolic stress is unclear.
  • Previous research suggests PPARA activation induces Cbfa2t3 in the liver, hinting at a potential role in metabolic regulation.

Purpose Of The Study

  • To investigate the effect of CBFA2T3 gene expression on metabolic stress in the mouse liver.
  • To determine if hepatic CBFA2T3 is a PPARA-sensitive gene and its role in modulating metabolic stress.

Main Methods

  • Administered PPARA ligand WY14643 to mice and analyzed Cbfa2t3 expression.
  • Performed glucose and insulin tolerance tests on Cbfa2t3 knockout (<sup>-/-</sup>) and wild-type (<sup>+/+</sup>) mice.
  • Conducted histological analysis and gene expression profiling of liver tissues, focusing on lipid metabolism and stress-related genes.

Main Results

  • PPARA ligand WY14643 induced Cbfa2t3 expression in mouse liver.
  • Cbfa2t3<sup>-/-</sup> mice exhibited increased insulin resistance and significant lipid droplet accumulation in the liver, especially during fasting.
  • Expression of lipid accumulation-related genes (Cd36, Cidea, Fabp1) and Cidea mRNA was elevated in Cbfa2t3<sup>-/-</sup> mice, with Cidea showing higher induction after WY14643 treatment.

Conclusions

  • Hepatic CBFA2T3 is a PPARA-sensitive gene involved in modulating metabolic stress in the mouse liver.
  • CBFA2T3 plays a protective role against insulin resistance and hepatic lipid accumulation.
  • The findings suggest Cbfa2t3 is a key player in the PPARA-mediated regulation of liver metabolic homeostasis.

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