Leveraging DNA Origami to Study Phagocytosis

Area of Science:

• Cell biology
• Nanotechnology
• Immunology

Background:

• Plasma membrane receptors and ligands often form nanoscale clusters.
• Precisely manipulating these nanoscale protein clusters is challenging.
• Understanding clustering's role in cellular processes like phagocytosis is limited.

Purpose of the Study:

• To utilize DNA origami for precise nanoscale protein localization.
• To investigate the impact of nanoscale protein clustering on phagocytosis.
• To develop adaptable protocols for studying immune signaling.

Main Methods:

• DNA origami structures were conjugated to lipid bilayer-coated beads.
• Phagocytosis assays were performed using these functionalized beads.
• Total internal reflection fluorescence (TIRF) microscopy was employed on planar glass coverslips.

Main Results:

• Demonstrated the ability of DNA origami to precisely control protein localization at the nanoscale.
• Established protocols for using DNA origami in phagocytosis assays.
• Showcased the adaptability of the method for studying immune cell interactions.

Conclusions:

• DNA origami offers a powerful tool for manipulating nanoscale protein organization.
• This technique facilitates the investigation of how protein clustering influences phagocytosis.
• The developed protocols can be applied to diverse immune signaling pathway research.