Improvement of Mechanical Properties of 3D Bioprinted Structures Through Cellular Overgrowth
October 2024
in “
Applied Sciences
”
Studysummary In this study, tubular 3D bioprinted structures made from sodium alginate and gelatin, containing NIH/3T3 fibroblast cells, demonstrated the ability for cell growth and network formation over 6 weeks, although structural tensile strength decreased with cell growth and polymer degradation.
Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer
This study explores the enhancement of mechanical properties in 3D bioprinted structures using sodium alginate and gelatin hydrogels with NIH/3T3 fibroblast cells. Initially, these structures have low tensile strength, but over an 8-week incubation, cellular overgrowth significantly improves their mechanical properties. By week 6, a dense, interconnected cell network forms, increasing tensile strength nearly ninefold. However, by week 8, excessive cellular overgrowth and matrix degradation lead to a decline in mechanical properties. The study concludes that a 6-week cultivation period optimizes mechanical strength, making these structures suitable for biomedical applications like implants.
