Rapid creation system of morphologically and functionally communicative three-dimensional cell-dense tissue by centrifugation.

This study reports a rapid fabrication system of a morphologically and functionally communicative three-dimensional (3D) cell-dense tissue without scaffolds by centrifugation. The tight adhesion between C2C12 myoblasts and culture surface was accelerated without significant cell damage by centrifugation (80 x g, 37 °C, 30 min). A thicker tissue created on a temperature-responsive culture surface was harvested by decreasing temperature. The 3D myoblast tissues having approximately 200 μm-thickness were created at 1.5 h [centrifugation (80 x g, 37 °C) for 30 min and tissue harvest for 1 h]. However, in the case of without centrifugation, the myoblast tissues had fragile parts even at 7.5 h after the incubation. Additionally, electrically/functionally communicative and thicker human induced pluripotent stem (iPS) cell-derived cardiac tissues were created rapidly by the centrifugation and cultivation at 37 °C. We report a centrifugation system that significantly shortens the creation time of 3D tissues. We envision that this procedure will contribute to the field of tissue engineering and regenerative medicine.