{
  "id": 14976388,
  "title": "Engineering tunable synthetic fibrotic niches to model acinar-to-ductal metaplasia in 2D pancreatic culture systems",
  "url": "https://urgent.news/2026/10/16/engineering-tunable-synthetic-fibrotic-niches-to-model-acinar-to",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-16T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.10.15.759386v1?rss=1"
  },
  "original_language": "en",
  "account": "Acinar-to-ductal metaplasia (ADM) is a crucial early stage in pancreatic cell-state transition, linked to injury, inflammation, and pancreatic intraepithelial neoplasia (PanIN) progression. Researchers have developed a novel two-dimensional polyacrylamide (PAA) hydrogel platform to independently manipulate substrate stiffness and adhesive ligand presentation for murine pancreatic acinar 266-6 cells. This platform simulates three distinct mechanical conditions - soft pancreatic tissue (0.50 kPa), transitional (4.48 kPa), and fibrotic (18.29 kPa) - providing a controlled environment for investigating ADM.\n\nThe PAA hydrogel incorporates RGD, a conventional adhesive cue, and laminin-derived IKVAV to create a basement-membrane-like environment, promoting acinar identity preservation. Gelatin, a collagen-derived protein, is included to mimic a collagen-rich fibrotic matrix. The platform's peptide coupling is calibrated using fluorescently labeled RGD, allowing for the assessment of various responses after 3 days.\n\nThe researchers evaluated morphology, alpha-amylase 2 (AMY2) expression, Yes-associated protein (YAP) nuclear-to-cytoplasmic localization, and sex-determining region Y-box transcription factor 9 (SOX9) fluorescence as indicators of ADM-associated changes. An increase in stiffness led to elevated nuclear YAP localization and reduced AMY2 expression. IKVAV-containing conditions on softer matrices facilitated greater attachment and partially preserved acinar-like phenotype, despite elevated nuclear YAP.\n\nAs the stiffness increased, the cells demonstrated a shift from an acinar-associated state toward an ADM-associated ductal phenotype. This shift was characterized by reduced roundness, geometric regularity/solidity, and increased aspect ratio. On gelatin-modified hydrogels, these phenotypic changes correlated with increased cell-area-normalized SOX9 fluorescence. This controllable and adaptable system enables researchers to dissect the roles of mechanical and biochemical extracellular-matrix inputs during pancreatic phenotypic plasticity.",
  "summary": "Acinar-to-ductal metaplasia (ADM) is an early pancreatic cell-state transition associated with injury, inflammation, and progression toward pancreatic intraepithelial neoplasia (PanIN). Although genetic and inflammatory drivers of ADM are well established, the contribution of extracellular-matrix mechanics is difficult to isolate because tissue stiffening is accompanied by changes in matrix…",
  "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."
}