{
  "id": 14059913,
  "title": "A rapid, genetically-tractable human iPSC-derived model for studying tissue-resident macrophage biology in Alzheimer's and other diseases",
  "url": "https://urgent.news/2026/10/12/a-rapid-genetically-tractable-human-ipsc-derived-model-for-studying",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-10-12T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.10.08.757653v1?rss=1"
  },
  "original_language": "en",
  "account": "A novel method has been developed to create a human iPSC-derived model of tissue-resident macrophages, specifically for studying Alzheimer's disease and other related conditions. This breakthrough addresses the challenges of accurately modeling human brain macrophages in vitro, which often involve complex cytokine cocktails and lengthy processes. The new protocol generates high-purity cells (over 90% purity) from cryopreserved erythro-myeloid progenitor cells within just 19 days, after a final 7-day maturation phase driven by macrophage colony-stimulating factor alone. Transcriptomic analysis shows these cells possess enrichment in phagocytic and lysosomal programs, crucial for efferocytosis, and display higher expression of scavenger receptors and Alzheimer's risk genes like TREM2. Functionally, the human macrophages exhibit superior phagocytic uptake of various substrates, including amyloid-beta, compared to microglia-derived cells. They also show increased lysosomal mass and robust TREM2 signaling, making them an ideal platform for investigating TREM2 biology in AD. Moreover, these macrophages can withstand lipid-mediated siRNA transfection with high efficiency, allowing for rapid genetic manipulation of AD risk genes. This simplified, scalable, and genetically tractable human macrophage model offers a promising tool for exploring the roles of core macrophage functions in AD, aging, and other disorders.",
  "summary": "Large-scale genetic and preclinical studies strongly implicate myeloid cells, particularly brain-resident macrophages, in the pathogenesis of Alzheimer's disease (AD). Efferocytic clearance of apoptotic cells and other cholesterol-rich cellular debris is a core macrophage function and represents an active area of AD research. However, human tissue-resident macrophages remain difficult to model in…",
  "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."
}