{
  "id": 2934568,
  "title": "Remodeling oligodendrocyte lipid metabolism via liver X receptors overcomes inflammatory blockade of remyelination",
  "url": "https://urgent.news/2026/08/15/remodeling-oligodendrocyte-lipid-metabolism-via-liver-x-receptors",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-15T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.07.743529v1?rss=1"
  },
  "original_language": "en",
  "account": "Multiple sclerosis is a disease marked by immune-mediated damage to the protective myelin sheath coating nerve fibers. This impairs the ability of oligodendrocyte precursor cells (OPCs) to differentiate into mature myelinating oligodendrocytes (OLs). Inflammatory cytokines present in MS lesions interfere with OPC maturation, transforming them into antigen-presenting cells with immune-like characteristics. However, the specific mechanisms behind this inflammation-induced remyelination failure are unclear.\n\nThe study found that inflammation alters OPC lipid metabolism, switching from lipid synthesis to utilization. This shift results in lower intracellular fatty acid levels and increased reliance on fatty acid oxidation. In cultured rodent OPCs, interferon-gamma (IFN-gamma) treatment induced this metabolic reprogramming. Transcriptomic analysis revealed comparable lipid metabolic changes in OL-lineage cells derived from human surgical specimens or mouse models of inflammatory demyelination and human multiple sclerosis lesions.\n\nBoosting fatty acid availability in OPCs either by supplying oleic acid or blocking fatty acid oxidation helped relieve immune-like functions and improve differentiation. Moreover, activating transcription factors known as liver X receptors (LXR) modified lipid metabolism, reduced immune-like properties, and overcame IFN-gamma-induced differentiation blockage in both mouse and human OPCs. In a mouse model where inflammation hinders remyelination, LXR activation boosted the production of mature OLs and accelerated myelin repair.\n\nThese findings suggest that inflammation can reprogram OPC lipid metabolism, contributing to remyelination failure. Activation of LXR offers a potential therapeutic avenue to enhance remyelination in multiple sclerosis by rebalancing lipid metabolism and suppressing immune-like functions in OPCs.",
  "summary": "Multiple sclerosis is characterized by immune-mediated demyelination and inefficient remyelination, owing to impaired differentiation of oligodendrocyte precursor cells (OPCs) into myelinating oligodendrocytes (OLs). Inflammatory cytokines within multiple sclerosis lesions inhibit OPC maturation and induce an immune-like phenotype with antigen-presenting properties, but the underlying mechanisms…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}