Microfluidic tools for quantitative studies of eukaryotic chemotaxis.

Area of Science:

• Cell biology
• Biophysics
• Microfluidics

Background:

• Microfluidic techniques offer controlled environments for live cell experiments.
• Stable concentration profiles are generated using microfluidic gradient mixers for studying cell responses.
• Conventional gradient mixers have slow response times, limiting the study of rapid intracellular events.

Purpose of the Study:

• To review conventional microfluidic gradient mixers.
• To introduce a novel flow photolysis technique for enhanced temporal resolution in studying cell directional sensing.

Main Methods:

• Review of conventional microfluidic gradient mixers.
• Description of the flow photolysis technique combining photo-activation of caged compounds with microfluidic chambers.

Main Results:

• Conventional microfluidic gradient mixers are too slow to resolve intracellular protein translocation events.
• The flow photolysis technique significantly increases temporal resolution.

Conclusions:

• The flow photolysis technique overcomes the temporal limitations of conventional microfluidic gradient mixers.
• This advancement allows for better investigation of eukaryotic directional sensing mechanisms.