Scalable Manufacture of Therapeutic Mesenchymal Stromal Cell Products on Customizable Microcarriers in Vertical Wheel Bioreactors that Improve Direct Visualization, Product Harvest, and Cost

This publication evaluates expansion of induced pluripotent stem cell-derived mesenchymal stromal cells on engineered gelatin methacryloyl microcarriers within Vertical-Wheel bioreactor systems. The study demonstrates successful scale-up from smaller cultures to larger bioreactor volumes while enabling direct visualization of cell growth and efficient product recovery through microcarrier digestion. Expanded cells maintained viability, differentiation capacity, and immunomodulatory characteristics. The platform was also applied to generation of osteogenic matrix products that were assessed in regenerative medicine models. In addition to biological performance, the authors compared manufacturing economics and operational efficiency relative to conventional monolayer culture. The results support an integrated microcarrier and bioreactor strategy for scalable production, monitoring, and harvest of therapeutic MSC-derived products.