Measuring Mechanical and Adhesive Properties of Single Cells Using an Atomic Force Microscope

Area of Science:

• Biophysics
• Cell Biology
• Materials Science

Background:

• Atomic force microscopy (AFM) is a powerful tool for nanoscale imaging.
• Characterizing the mechanical and adhesive properties of single living cells is crucial for understanding cellular behavior.

Purpose of the Study:

• To describe a method for determining the Young's modulus of a single living cell using AFM.
• To outline a method for measuring cell adhesion forces with a coated cantilever.
• To provide an overview of data analysis and potential pitfalls in AFM measurements of cells.

Main Methods:

• Utilized AFM to perform force spectroscopy on living single cells.
• Employed a coated cantilever for adhesion force measurements.
• Detailed the process of Young's modulus determination from force-indentation curves.
• Described data analysis procedures for AFM measurements.

Main Results:

• Successfully determined the Young's modulus of living single cells.
• Quantified adhesion forces between the coated cantilever and the cell surface.
• Identified common challenges and critical considerations during AFM measurements and analysis.

Conclusions:

• AFM provides a robust method for quantifying cell mechanical properties and adhesion.
• Careful consideration of measurement and analysis parameters is essential for accurate results.
• This method facilitates deeper insights into cell biomechanics and cell-surface interactions.