Probing living cell dynamics and molecular interactions using atomic force microscopy.

Atomic force microscopy (AFM) has emerged as a powerful tool for studying biological interactions at the single-molecule level, offering unparalleled insights into receptor-ligand dynamics on living cells. This review discusses key developments in the application of AFM, highlighting its ability to capture nanomechanical properties of cellular surfaces and probe dynamic interactions, such as virus-host binding. AFM's versatility in measuring mechanical forces and mapping molecular interactions in near-physiological conditions is explored. The review also emphasizes how AFM provides critical insights into cell surface organization, receptor functionality, and viral entry mechanisms, advancing the understanding of cellular and molecular processes.