{
  "id": 2976489,
  "title": "Single-cell and spatial transcriptomics resolve airway obliteration in bronchiolitis obliterans syndrome",
  "url": "https://urgent.news/2026/08/23/single-cell-and-spatial-transcriptomics-resolve-airway-obliteration",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-23T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.21.746071v1?rss=1"
  },
  "original_language": "en",
  "account": "The study aimed to understand the structural cell states involved in bronchiolitis obliterans syndrome (BOS), a fibrotic small-airway disease associated with chronic lung allograft dysfunction (CLAD). Researchers analyzed explanted lungs from BOS patients undergoing re-transplantation and controls using single-nucleus RNA sequencing and targeted spatial transcriptomics. Both techniques were integrated with a published restrictive allograft syndrome (RAS) atlas.\n\nThe results revealed that BOS lungs contained a profibrotic circuit of Aberrant Basaloid cells and CTHRC1+ fibrotic fibroblasts. Spatial mapping showed that these cells formed two convergent remodeling fronts, extending beyond the airway wall to the alveolar interface. The circuit began with a CXCL14+TNC+ injury-associated basal cell state, which served as the major reservoir of these cells. CTHRC1+ fibroblasts expanded subepithelially, replacing resident peribronchial fibroblasts and causing a vascular shift towards systemic venous endothelium.\n\nThe findings suggest that BOS engages structural-cell circuits similar to those in RAS and other fibrotic lung diseases, but the disease develops along an airway-centered axis rather than a parenchyma-centered one. This implies that CLAD is a spatial rather than cellular spectrum, defined more by anatomical distribution than cell identity. The shared structural programs identified in this study may be targetable across various CLAD phenotypes.",
  "summary": "Background: Chronic lung allograft dysfunction (CLAD) is the leading cause of death beyond the first year after lung transplantation, and its most frequent phenotype is bronchiolitis obliterans syndrome (BOS), a fibrotic small-airway disease. Mechanistic work has focused on the immune compartment, yet intensified immunosuppression does not alter established disease. Aim: To resolve which…",
  "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."
}