{
  "id": 3506047,
  "title": "EV-Tracer enables lineage-resolved detection and molecular profiling of extracellular vesicle-associated signals in cancer-fibroblast co-culture",
  "url": "https://urgent.news/2026/08/26/ev-tracer-enables-lineage-resolved-detection-and-molecular-profiling",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-08-26T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.25.746941v1?rss=1"
  },
  "original_language": "en",
  "account": "Extracellular vesicles (EVs) play a crucial role in cell-to-cell communication by transferring various bioactive molecules. However, when EVs from different cellular lineages are mixed in multicellular experiments, it becomes challenging to distinguish them, hindering the analysis of how cell-cell interactions impact EV-associated molecular profiles. To tackle this issue, EV-Tracer, a dual-fluorescence tracing and capture system utilizing CD63, was developed. The system involves inserting either Achilles or mScarlet into the small extracellular loop of CD63, allowing for tracer-specific EV detection through digital counting, antibody-based isolation, and live-cell visualization.\n\nExploratory EV RNA sequencing revealed that physical cell-cell contact is linked to distinct EV RNA profiles, including interferon-related signals. These findings were further supported by targeted cellular and EV-associated RNA analyses. In summary, EV-Tracer offers a practical framework for studying lineage-associated EV dynamics and molecular signals in mixed-cell systems.",
  "summary": "Extracellular vesicles (EVs) facilitate intercellular communication by transferring diverse bioactive molecules from donor to recipient cells. However, EVs released by distinct cellular lineages become difficult to distinguish when mixed in multicellular experimental models, limiting the analysis of how cell-cell interactions affect EV-associated molecular profiles. To address this, EV-Tracer, a…",
  "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."
}