Epithelial tension controls intestinal cell extrusion

  • Daniel Krueger*
  • , Willem Kasper Spoelstra
  • , Dirk Jan Mastebroek
  • , Rutger N.U. Kok
  • , Shanie Wu
  • , Mike Nikolaev
  • , Marie Bannier-Hélaouët
  • , Nikolche Gjorevski
  • , Matthias Lutolf
  • , Johan van Es
  • , Jeroen van Zon*
  • , Sander J. Tans*
  • , Hans Clevers*
  • *Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Cell extrusion is essential for homeostatic self-renewal of the intestinal epithelium. extrusion is thought to be triggered by crowding-induced compression of cells at the intestinal villus tip. In this study, we found instead that a local “tug-of-war” competition between contractile cells regulated extrusion in the intestinal epithelium. We combined quantitative live microscopy, optogenetic induction of tissue tension, genetic perturbation of myosin II activity, and local disruption of the basal cortex in mouse intestines and intestinal organoids. these approaches revealed that a dynamic actomyosin network generates tension throughout the intestinal villi, including the villus tip region. mechanically weak cells unable to maintain this tension underwent extrusion. thus, epithelial barrier integrity depends on intercellular mechanics.

Original languageEnglish
Article numbereadr8753
JournalScience
Volume389
Issue number6764
DOIs
Publication statusPublished - 4 Sept 2025

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