Tissue growth modeling in a wavy-walled bioreactor

Area of Science:

• Biotechnology
• Biomaterials Engineering
• Tissue Engineering

Background:

• Bioreactors are essential for cartilage tissue engineering, facilitating cell seeding, nutrient transport, and mechanical stimulation.
• Understanding the impact of hydrodynamic environments is crucial for optimizing engineered cartilage properties.

Purpose of the Study:

• To investigate the effects of a wavy-walled bioreactor's hydrodynamic environment on engineered cartilage properties.
• To develop a predictive model for cartilage tissue growth and extracellular matrix synthesis.

Main Methods:

• Utilized a novel wavy-walled bioreactor to create diverse hydrodynamic conditions.
• Developed a multi-component tissue growth model integrating computational fluid dynamics, kinetic growth models, and artificial neural networks.
• Correlated hydrodynamic parameters with kinetic constants and construct composition with material properties using artificial neural networks.

Main Results:

• The developed model successfully characterized tissue growth and extracellular matrix synthesis over 4 weeks.
• The model predicts the dynamics of tissue growth and the final compositional and mechanical properties of engineered cartilage.
• Demonstrated the ability to link specific hydrodynamic environments to resulting cartilage properties.

Conclusions:

• The developed tissue growth model provides a tool for predicting and optimizing bioprocessing conditions for cartilage tissue engineering.
• This approach enables the tailored fabrication of engineered cartilage with specific desired properties.
• Highlights the significance of controlled hydrodynamic environments in achieving successful cartilage regeneration.