Interaction pathways between soft lipid nanodiscs and plasma membranes: A molecular modeling study

Area of Science:

• Biophysics
• Materials Science
• Nanotechnology

Background:

• Lipid nanodiscs are emerging carriers for amphiphilic drug delivery to tumors.
• Understanding cell-nanomaterial interactions is crucial for optimizing delivery and minimizing side effects.

Purpose of the Study:

• To investigate the interaction mechanisms between binary lipid nanodiscs and plasma membranes.
• To elucidate the pathways governing nanodisc-cell membrane interactions.

Main Methods:

• Utilized dissipative particle dynamics (DPD) simulations.
• Designed a minimal binary lipid nanodisc model.

Main Results:

• Discovered three distinct interaction pathways: membrane attachment with lipid domain exchange, partial membrane wrapping with nanodisc vesiculation, and receptor-mediated endocytosis.
• Identified the roles of normal and bola lipids in mediating these interactions.
• Demonstrated that nanodisc pathways differ significantly from those of rigid nanoparticles.

Conclusions:

• The study reveals fundamental mechanisms of lipid nanodisc-membrane interactions.
• Findings provide valuable guidelines for designing advanced lipid nanodiscs for biomedical applications, such as targeted drug delivery.