Mechanical Cues for Triggering and Regulating Cellular Movement Selectively at the Single-Cell Level.

Area of Science:

• Biophysics
• Cell Biology
• Mechanobiology

Background:

• Cell motility is crucial for physiological processes like wound healing and cancer metastasis.
• Understanding and controlling cell movement is vital for various biomedical applications.

Purpose of the Study:

• To introduce a novel method for triggering and regulating single-cell motility using transient mechanical stimuli.
• To investigate the impact of mechanical compression on BV2 microglial cell movement and underlying mechanisms.

Main Methods:

• Applying controlled mechanical compression to individual BV2 microglial cells.
• Analyzing cell response, including actin cortex repair, myosin activation, and focal adhesion dynamics.
• Investigating the influence of force location and magnitude on cell motility.

Main Results:

• Mechanical compression reliably initiates cell motility in BV2 cells.
• Cellular response involves myosin activation for actin repair, leading to focal adhesion degradation and cell polarization.
• Force parameters (location, magnitude) precisely control cell movement direction and initiation.

Conclusions:

• Transient mechanical stimulus is an effective, non-toxic method to control single-cell motility.
• The study reveals insights into the biophysical mechanisms of force-induced cell movement.
• This approach holds significant translational potential for cell programming and mechano-based therapies.