Imaging and Manipulation of Extracellular Traps by Atomic Force Microscopy

Area of Science:

• Immunology
• Biophysics
• Nanotechnology

Background:

• Neutrophil extracellular traps (NETs) are critical innate immune components involved in pathogen defense.
• NETs are implicated in various diseases, including cardiovascular and autoimmune disorders.
• Despite advances in imaging, atomic force microscopy (AFM) studies on NETs, particularly their mechanical properties, remain limited.

Purpose of the Study:

• To provide protocols for atomic force microscopy (AFM) imaging and force spectroscopy of NETs.
• To address the technical challenges associated with imaging adhesive NET structures using AFM.
• To facilitate further research into the mechanical properties of NETs and factors influencing them.

Main Methods:

• Development of specific protocols for sample preparation for AFM analysis of NETs.
• Application of AFM for high-resolution imaging of NET structures.
• Utilization of AFM force spectroscopy to probe the mechanical properties of NETs.

Main Results:

• Established protocols enable successful AFM imaging of NETs.
• Force spectroscopy experiments provide insights into NET mechanical characteristics.
• The protocols address challenges posed by the adhesive nature of NETs.

Conclusions:

• AFM is a valuable technique for characterizing NETs, offering unique insights into their structure and mechanics.
• The developed protocols can advance research on NETs' role in health and disease.
• Further investigation into NET mechanical properties using AFM is warranted.