A thermal study of cellular motility by optical time-resolved correlation

Area of Science:

• Biophysics
• Cell Biology
• Microfluidics

Background:

• Assessing cell motor properties under controlled physical-chemical conditions is crucial.
• Existing techniques are limited in sample throughput and thermodynamic control.
• A new sensor is needed for simultaneous, controlled analysis of cell motility.

Purpose of the Study:

• To develop and validate a novel cell motility sensor using optical time-resolved correlation.
• To enable simultaneous study of multiple samples under controlled thermodynamic conditions.
• To investigate sperm motility across a temperature range (0-37 °C).

Main Methods:

• Development of a cell motility sensor utilizing optical techniques and time-resolved correlation analysis.
• Adaptation of the system for simultaneous study of multiple samples.
• Image correlation analysis to track temporal behavior of motile cells.
• Testing with various cell types, focusing on sperm motility.

Main Results:

• The sensor successfully studied sperm motility and prevalence across a temperature range of 0 to 37 °C.
• Incubation at 10 °C was found to yield the longest prevalence in sperm motility.
• A novel thermal reversibility behavior in sperm motility was observed for the first time.

Conclusions:

• The developed optical sensor offers a significant advancement for studying cell motor properties.
• The findings provide new insights into the thermal regulation of sperm motility.
• The observed thermal reversibility opens new avenues for understanding cellular responses to temperature changes.