Continuous Perfusion Experiments on 3D Cell Proliferation in Acoustic Levitation.

Area of Science:

• Biotechnology and Biomedical Engineering
• Acoustofluidics and Cell Analysis

Background:

• Accurate 3D cell proliferation and function analysis is crucial for understanding cellular behavior.
• Existing methods often lack the precision and control needed for in vivo-like cellular studies.

Purpose of the Study:

• To develop and validate an acoustofluidic trap for high-resolution, 3D cell analysis.
• To demonstrate the platform's capability for long-term, continuous cell monitoring and functional assays.

Main Methods:

• Integration of a prototype acoustofluidic trap with standard microscopy setups.
• Development of a mathematical and finite element method (FEM)-based COMSOL model for acoustic mode analysis.
• Conducting continuous perfusion experiments with K562 cell line under sterile conditions for 55 hours.

Main Results:

• The acoustofluidic trap enables precise 3D cell levitation and trapping within a spherical cavity.
• The system allows for continuous perfusion, temperature, and flow control under optical inspection.
• Deterministic monitoring of cell behavior over extended periods was achieved.

Conclusions:

• The acoustofluidic platform offers a versatile tool for in vitro cell testing, mimicking in vivo conditions.
• This technology supports advanced cell function tests and the study of cell-cell interactions.
• The developed trap is compatible with existing microscope systems, enhancing its applicability.