A new tool for detection of extracellular traps

Area of Science:

• Immunology
• Cell Biology
• Microscopy

Background:

• Extracellular traps (e.g., NETs) are released by immune cells, playing roles in pathogen defense and autoimmune diseases.
• Mechanisms of extracellular trap formation are still not fully understood since their discovery in 2004.

Purpose of the Study:

• To introduce a novel, single-step fluorescence microscopy tool for detecting extracellular traps.
• To enable differentiation between nuclear and extracellular DNA using specific fluorescence excitation wavelengths.

Main Methods:

• Utilized GreenGlo™ DNA dye for a wash-free, single-step staining protocol.
• Employed fluorescence microscopy with distinct excitation wavelengths to distinguish DNA sources.

Main Results:

• The GreenGlo™ staining method successfully detected extracellular traps.
• The technique differentiates between nuclear DNA and extracellular DNA (extracellular traps).
• The method is applicable to both adherent and non-adherent cells.

Conclusions:

• The new GreenGlo™ staining protocol offers a simplified approach for extracellular trap detection.
• This tool is expected to be extendable to various immune cell types, including eosinophils, mast cells, and monocytes.
• Further research into extracellular trap formation mechanisms can benefit from this detection method.