Engineering multi-layered tissue constructs using acoustic levitation.

Area of Science:

• Tissue Engineering
• Cell Biology
• Biotechnology

Background:

• Engineering complex, in vivo-like tissue structures is a significant challenge.
• Existing methods struggle to create heterogeneous, layered cell constructs.
• Understanding collective cell migration is crucial for tissue development and repair.

Purpose of the Study:

• To develop a novel technique for engineering composite, layered tissue structures.
• To investigate the role of cell-cell junctions in collective epithelial migration.
• To create a functional, polarized epithelial barrier model.

Main Methods:

• Utilizing an acoustofluidic bioreactor to assemble epithelial cells into sheets.
• Co-culturing levitated epithelial cell sheets with fibroblast layers.
• Analyzing cell migration patterns and the formation of cell-cell junctions.

Main Results:

• Successfully engineered composite tissue structures with distinct epithelial and fibroblast layers.
• Demonstrated that acoustofluidic levitation promotes cell-cell junction formation, enabling collective migration.
• The engineered multilayered model formed a polarized epithelial barrier that responded to apical challenge.

Conclusions:

• The acoustofluidic method provides a robust platform for engineering diverse layered tissue types.
• This technique offers new insights into the mechanisms of collective cell migration.
• The developed model is valuable for both tissue engineering applications and fundamental cell biology research.