{
  "id": 11225004,
  "title": "An age-preserving neuronal iSpheroid platform for modeling human aging and Alzheimer disease",
  "url": "https://urgent.news/2026/10/01/an-age-preserving-neuronal-ispheroid-platform-for-modeling-human",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-10-01T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.30.755853v1?rss=1"
  },
  "original_language": "en",
  "account": "Human neuronal iSpheroids have been developed as a groundbreaking platform to model human aging and Alzheimer's disease (AD). This scalable three-dimensional technique converts primary fibroblasts directly into long-lived, electrophysiologically active neurons, without the need for pluripotency. These iSpheroids successfully capture the donor-specific epigenetic age of the original cells, whether young and unimpaired, aged, or from AD patients.\n\nGenetic analysis revealed that around 96% of the cells adopted a neuronal identity, spanning various neuronal states. The platform is versatile enough to incorporate astrocytes and microglia, even generating iSpheroids from non-human primate fibroblasts. Importantly, AD iSpheroids spontaneously demonstrated neuronal degeneration, amyloid-beta accumulation, progressive Tau pathology, and metabolic dysfunction.\n\nThe platform allows for integrated proteomic, metabolomic, and lipidomic profiling, which distinguishes physiological aging from AD. Crucially, this analysis exposed disease-associated metabolic remodeling. For instance, oxaliplatin shifted AD iSpheroids towards oxidative metabolism, while a multi-compound screen identified trametinib as a promising modulator targeting inflammatory and age-associated programs in AD.",
  "summary": "Aging is the strongest risk factor for Alzheimer disease (AD), yet existing human neuronal models either erase age-associated features during reprogramming or fail to recapitulate three-dimensional organization of human neuronal tissue. Here, we establish directly induced neuronal spheroids (iSpheroids), a scalable three-dimensional platform generated by direct conversion of primary fibroblasts…",
  "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."
}