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Oxysterols as Endogenous Lipid Toxins and Toxic Signaling Mediators in Chronic Disease

Arin Natania S1

  • 1Center for Global Health, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University (Deemed To Be University), Chennai, Tamil Nadu, India.

Comprehensive Physiology
|May 5, 2026
PubMed

Insights

Oxysterols regulate metabolic balance and communication between organs. Targeting these cholesterol derivatives offers a promising approach for treating metabolic disorders.

Area of Science:

  • Biochemistry
  • Metabolic Biology
  • Endocrinology

Background:

  • Oxysterols, derived from cholesterol, are key regulators of metabolic homeostasis.
  • They act as ligands for nuclear receptors like liver X receptors (LXRs) and modulate G protein-coupled receptor (GPCR) signaling.

Purpose of the Study:

  • To elucidate the role of oxysterols in metabolic homeostasis and interorgan communication.
  • To explore the therapeutic potential of targeting the oxysterol-LXR axis in metabolic disorders.

Main Methods:

  • Investigated oxysterol generation via enzymatic and oxidative pathways.
  • Examined oxysterol interactions with nuclear receptors (LXRs) and GPCRs.
  • Analyzed oxysterol integration of lipid metabolism with glucose regulation, inflammation, and immune responses in key metabolic organs.

Main Results:

  • Oxysterols integrate lipid metabolism with glucose regulation, inflammation, and immune responses across the liver, adipose tissue, brain, and pancreas.
  • The oxysterol-LXR axis is crucial for coordinating cholesterol flux with insulin sensitivity and glycemic control.
  • Dysregulated oxysterol accumulation is linked to cellular stress and chronic disease development.

Conclusions:

  • Oxysterols are critical regulators of metabolic homeostasis and interorgan communication.
  • The oxysterol-LXR pathway plays a significant role in metabolic control.
  • Oxysterols represent promising therapeutic targets for metabolic disorders.
Keywords:
7‐ketocholesterollipidoxysteroltoxins: inflammation

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