{
  "id": 5307049,
  "title": "Rewiring of Integrin Signaling and Cell-cycle Deregulation Drive SMARCB1-Deficient Epithelioid Sarcoma",
  "url": "https://urgent.news/2026/09/03/rewiring-of-integrin-signaling-and-cell-cycle-deregulation-drive",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-03T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.01.748640v1?rss=1"
  },
  "original_language": "en",
  "account": "Epithelioid sarcoma (EPS) is a particularly aggressive form of soft tissue cancer that arises due to a loss of the chromatin-remodeling protein SMARCB1. The exact mechanisms behind EPS have been difficult to pinpoint. However, a recent study has uncovered key dependencies on integrin signaling and CDKs as driving forces behind the disease. By using CRISPR technology, researchers discovered that disrupting the integrin subunit alpha V (ITGAV) signaling pathway led to altered epithelioid cluster formation and reduced MYC expression. When SMARCB1 was re-introduced, it replicated these effects, suggesting that SMARCB1 loss is specifically responsible for repressing certain integrin subunits while maintaining an ITGAV-centered survival mechanism. This nuanced behavior is linked to changes in the BAF complex's occupancy. Further studies on EPS cell lines and primary tumors revealed a common occurrence of genetic or epigenetic inactivation of CDKN2A/p16, a gene essential for regulating the cell cycle. This finding indicates that the loss of cell-cycle control is a crucial accomplice in the development of EPS, offering a promising target for developing targeted therapies through CDK4/6 inhibition. Ultimately, these insights shed light on the central oncogenic program in EPS, emphasizing the importance of integrin-driven signaling and cell-cycle deregulation as critical factors in this devastating disease.",
  "summary": "Epithelioid sarcoma (EPS) is an aggressive soft-tissue sarcoma characterized by loss of the chromatin-remodeling subunit SMARCB1. The oncogenic programs driving EPS remain poorly understood. Through CRISPR loss-of-function screens, we identified conserved dependencies on integrin signaling components and cyclin-dependent kinases (CDKs). Genetic disruption of integrin subunit alpha V…",
  "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."
}