Summary
Published in PLOS ONE (2024), this peer-reviewed study used 3D Petri Dish® micro-molds to form scaffold-free 3D microtissues. Full citation: González-Cruz, Rafael D., et al. Cortical spheroids show strain-dependent cell viability loss and neurite disruption following sustained compression injury
Cortical spheroids show strain-dependent cell viability loss and neurite disruption following sustained compression injury
Research Overview
Sustained compressive injury occurs in tumors, ischemic stroke, and swelling after traumatic brain injury, yet few in vitro models capture strain-dependent neural responses. This study built one using centrifugation: spheroids of neonatal rat cortical cells (4,000 cells each) were cultured 14 days, then spun at 104, 209, 313, or 419 rad/s for two minutes.
Finite element modeling of spheroid deformation translated those angular velocities into tissue pressures of roughly 10, 38, 84, and 149 units — giving a controllable, quantified dose of compressive strain and letting researchers relate mechanical load to neural cell viability in 3D.
Key Discoveries
- Centrifugation delivered controlled sustained compressive injury to cortical spheroids
- Finite element analysis converted angular velocity into quantified tissue pressures
- Enables strain-dependent study of neural viability relevant to swelling, stroke, and tumors
