Constrained spheroids/organoids in perfusion culture

Area of Science:

• Biotechnology and Cell Biology
• Tissue Engineering
• 3D Cell Culture Models

Background:

• 3D spheroid and organoid cultures are increasingly vital for studying physiologically relevant cell behaviors.
• These models are essential for applications like cell-based diagnostics, therapy development, disease modeling, and drug screening.
• Optimal function of spheroids/organoids requires maintaining a size below 200μm diameter, ideally in perfusion culture systems.

Purpose of the Study:

• To describe various methods for constraining spheroid/organoid size during formation and culture.
• To ensure spheroids maintain high-level cell functions for accurate characterization and application.
• To discuss engineered chemical and physical properties of cell-contacting surfaces and devices for spheroid maintenance.

Main Methods:

• Substrate tethering techniques for size control.
• Physical constraints including porous membranes, macroporous sponges, and microfluidic channels.
• Engineering of cell-contacting surfaces and device properties to support spheroid formation and function.

Main Results:

• Successful implementation of size-constraining methods enables sustained spheroid viability and function.
• Engineered materials and devices facilitate the formation and long-term maintenance of functional spheroids.
• Methods address challenges in maintaining optimal spheroid size for various applications.

Conclusions:

• Constraining spheroid size is key to preserving their physiological relevance and functional integrity.
• The described methods offer practical solutions for reproducible 3D cell culture.
• These advancements support the broader application of spheroids and organoids in biomedical research and development.