{
  "id": 213708,
  "title": "Heterotypic interfacial tension between oncogenic and wild-type populations forms the mechanical basis of tissue-specific oncogenesis in epithelia",
  "url": "https://urgent.news/2026/08/06/heterotypic-interfacial-tension-between-oncogenic-and-wild-type",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-08-06T00:00:00.000Z",
  "source": {
    "name": "eLife",
    "slug": "elife",
    "url": "https://elifesciences.org/articles/106893"
  },
  "original_language": "en",
  "account": "The origin of tumor formation in different tissues due to the same oncogenic mutation has long puzzled researchers. While genetic factors are partially responsible, the biophysical elements remain largely unexplored. This study presents a significant discovery - mechanical interactions between newly transformed and normal cells play a critical role in determining the survival and growth of HRas V12 mutants in human mammary and bronchial epithelia, resulting in divergent outcomes in these two tissues.\n\nIn mammary epithelium, individual mutants are expelled, mirroring the epithelial defense mechanism against cancer. However, when grouped together, these mutants become spatially confined and form stiff, jammed clusters. These clusters are characterized by a belt of actomyosin at the interface, where cell-to-cell adhesion is particularly strong.\n\nOn the other hand, in bronchial epithelium, mutant cells are allowed to spread persistently. Irrespective of the colony size, these cells continue to proliferate, forming long protrusions. This stark contrast in behavior between the two tissues suggests that the tissue-specific effects of oncogenic mutations are not solely dictated by genetics, but also by the underlying biomechanics.\n\nThe study further uncovers distinct biophysical properties of oncogenic clusters in the two tissues. These include variations in cell shapes, intracellular pressure, cell-cell tension, and cellular motility. Using a sophisticated cell shape-tension coupled bi-disperse vertex model, the researchers were able to demonstrate that interfacial tension at the boundaries between mutant and wild-type cells dictates the fate of these mutants. Depending on the level of interfacial tension, mutants can be eliminated, restrained, or expanded.\n\nMoreover, the researchers found that altering the heterotypic interfacial tension significantly changes the fate of mutant clusters. This discovery opens up new avenues for understanding the tissue-specific oncogenesis and offers potential avenues for therapeutic intervention.",
  "summary": "Why does the same oncogenic mutation drive tumor formation in some tissues but not in others? While cancer driver mutations are well documented, their tissue-specific effects remain largely attributed to genetic factors, leaving the biophysical aspects underexplored. Here, we demonstrate that mechanical interactions between newly transformed and wild-type cells are critical in determining…",
  "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."
}