{
  "id": 15051169,
  "title": "Letting go to hold on: loss of CCM2 disrupts endothelial force balance in cerebral cavernous malformations",
  "url": "https://urgent.news/2026/10/16/letting-go-to-hold-on-loss-of-ccm2-disrupts-endothelial-force-balance",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-16T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.10.09.757835v1?rss=1"
  },
  "original_language": "en",
  "account": "Cerebral cavernous malformations (CCM) are vascular lesions marked by compromised endothelial function and altered cell-cell and cell-matrix connections. Although endothelial contractility and tractions have been thought to play a role in CCM, the exact manner in which these forces are distributed and coordinated across adhesion systems remains unclear. To better understand this force balance in CCM2-deficient endothelial monolayers, researchers utilized genetically encoded FRET-based molecular tension sensors for vinculin and VE-cadherin, coupled with quantitative analysis of adhesion organization. Their findings revealed that the loss of CCM2 disrupts molecular forces, partially mediated by ROCK-dependent contractility, and redistributes them across endothelial adhesions. This shift causes a reorientation of mechanical engagement from cell-cell junctions to the cell-matrix interface. The mechanical stiffness of the surrounding matrix further exacerbates this imbalance, as healthy endothelial cells counteract stiffness by reinforcing both cell-cell and cell-matrix adhesions. However, in CCM2-deficient cells, there is a preference for reinforcing the cell-matrix interface instead. This suggests that the matrix remodeling associated with CCM could potentially reinforce an already altered mechanical state, creating a feedback loop between endothelial force transmission and the extracellular environment. More broadly, this research identifies the CCM complex as a key molecular player in regulating force balance in response to the cell's mechanical environment, and establishes a new platform that combines tension sensing and morphology-based imaging for studying adhesion mechanobiology.",
  "summary": "Cerebral cavernous malformations (CCM) are vascular lesions characterized by impaired endothelial integrity and altered cell-cell and cell-matrix interactions. While endothelial contractility and tractions have been implicated in CCM, how these forces are transmitted and coordinated across adhesion systems remains unknown. Here, we combined genetically encoded FRET-based molecular tension sensors…",
  "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."
}