{
  "id": 14284517,
  "title": "Cyclin E/CDK2 deficiency links cell cycle control to intestinal barrier integrity and tight junction regulation",
  "url": "https://urgent.news/2026/10/13/cyclin-e-cdk2-deficiency-links-cell-cycle-control-to-intestinal",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-13T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.10.12.758447v1?rss=1"
  },
  "original_language": "en",
  "account": "Intestinal epithelial cells continuously renew through a cell cycle-dependent process. The Cyclin E1/Cyclin E2/CDK2 complex plays a crucial role in this renewal, but its effects on intestinal barrier function are unclear. Researchers generated mice lacking Cyclin E2 and a triple knockout with intestinal epithelial cell-specific deletion of Cyclin E1 and CDK2 on a background with constitutive Cyclin E2 loss. They examined intestinal architecture, proliferation, and barrier function using histology, immunoblotting, qPCR, and FITC-dextran permeability assays. Surprisingly, mice with TKO or Cyclin E2 deficiency showed increased cell cycle activity, higher CDK1 expression, and reduced intestinal permeability. In colon carcinoma cells, CDK1 overexpression enhanced ZO-1 protein abundance and activated an AMPK-related kinase network. The study concludes that loss of Cyclin E2, alone or in combination with Cyclin E1/CDK2 deficiency, strengthens colonic barrier integrity in mice, likely due to transcriptional reprogramming and enhanced CDK1 signaling.",
  "summary": "Background & Aims: The intestinal epithelium renews continuously through cell cycle-dependent turnover, yet it remains unknown whether core cell cycle regulators directly control intestinal barrier function. We investigated how loss of the Cyclin E1/Cyclin E2/CDK2 complex affects intestinal homeostasis. Based on the important role of this complex in compensatory liver regeneration, we…",
  "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."
}