Cell fate coordinates mechano-osmotic forces in intestinal crypt formation

Area of Science:

• Developmental Biology
• Biophysics
• Cell Biology

Background:

• Intestinal organoids exhibit complex crypt-villus patterning during development.
• The mechanical forces governing this morphogenesis are not well understood.

Purpose of the Study:

• To investigate the physical forces driving crypt-villus morphogenesis in intestinal organoids.
• To identify cellular mechanisms regulating these forces and their impact on tissue patterning.

Main Methods:

• Utilized light-sheet microscopy and large-scale imaging quantification.
• Developed and employed a 3D biophysical model for computational screening.
• Performed live-imaging experiments with mechanical perturbations.

Main Results:

• Crypt formation correlates with reduced lumen volume.
• Actomyosin-driven apical contraction and basal tension synergize with lumen reduction.
• A critical tension threshold ensures robust crypt morphology.
• Identified a sodium/glucose cotransporter influencing lumen volume via cell swelling.

Conclusions:

• Cell fate, osmotic, and actomyosin forces are modulated to achieve robust intestinal morphogenesis.
• The study elucidates the cellular basis of coordinated forces in tissue development.