Tunable Single-Cell Multistate Nanomechanical Phenotyping by Micropipette-Assisted Atomic Force Microscopy to Dissect...

Area of Science:

• Biophysics
• Cell Biology
• Nanotechnology

Background:

• Mechanical forces significantly influence cellular functions and diseases.
• Atomic force microscopy (AFM)-based force spectroscopy is a key tool for assessing single-cell mechanical properties.

Purpose of the Study:

• To develop and validate a micropipette-assisted AFM method for multistate nanomechanical phenotyping of living cells.
• To enable dynamic measurement of cellular mechanical changes during biological processes and in altered microenvironments.

Main Methods:

• Utilized micropipette manipulation for 3D positioning of single living cells.
• Applied AFM-based force spectroscopy to measure nanomechanical properties at multiple cellular states.
• Investigated cell responses to extracellular matrix (ECM) cues and cell-cell interactions.

Main Results:

• Demonstrated the ability to isolate and reposition single cells in situ.
• Successfully measured dynamic nanomechanical phenotypes of cells in response to environmental changes.
• Revealed distinctive cellular behaviors and nanomechanical phenotypes in various experimental systems.

Conclusions:

• Micropipette-assisted AFM provides a powerful approach for creating a 'mechanical atlas' of single cells.
• Enables deeper understanding of cellular heterogeneity through biomechanical analysis.
• Offers significant benefits for the field of mechanobiology.