Microfluidics-integrated time-lapse imaging for analysis of cellular dynamics

Area of Science:

• Cell Biology
• Biotechnology
• Microfluidics

Background:

• High spatio-temporal resolution imaging is crucial for understanding cellular responses.
• Existing microfluidic technologies have limitations in integrating with advanced imaging strategies.
• There is a need for higher throughput methods to analyze cellular dynamics.

Purpose of the Study:

• To develop and validate a modular, medium-throughput microfluidics platform for high-resolution time-lapse imaging of living cells.
• To integrate microfluidics with advanced microscopy for enhanced cellular analysis.
• To enable long-term observation of cellular dynamics in various microenvironments.

Main Methods:

• Paired high-resolution time-lapse imaging with microfluidic multiplexing.
• Designed a modular platform with a conserved 96-well imaging area and variable input/output channels.
• Utilized oil immersion microscopy for high numerical aperture imaging.

Main Results:

• Successfully examined cell cycle progression, mitotic kinetics, and spindle orientation dynamics in model cell lines.
• Assessed self-renewal kinetics of mouse embryonic stem cells.
• Demonstrated dynamic assessment and manipulation of stem cell proliferation, detection of rare cell events, and measurement of time-scale correlations.

Conclusions:

• The developed microfluidics-based imaging platform facilitates high-resolution, long-term cellular analysis.
• The system achieves high experimental throughput (>900 cells/experiment) for extended observation periods (up to 120 h).
• This integrated approach yields dynamic spatial and temporal information crucial for probing cellular functions.