Genetically Engineered Plasma Membrane Nanovesicles for Cancer-Targeted Nanotheranostics

Area of Science:

• Biotechnology
• Nanomedicine
• Drug Delivery Systems

Background:

• Ligand-targeted nanosystems are crucial for selective drug delivery to specific cell populations.
• Conventional nanoparticle (NP) functionalization with protein ligands can lead to compromised targeting due to uncontrolled orientation and reduced ligand activity.
• There is a need for advanced strategies to ensure proper ligand display and maintain activity in nanocarriers.

Purpose of the Study:

• To introduce a biomimetic synthetic strategy for preparing genetically engineered nanovesicles (GNVs).
• To provide procedures for GNV preparation, enabling controlled display of targeting moieties.
• To guide researchers in designing analogous NPs for cell-specific targeting applications.

Main Methods:

• Utilizing biomimetic synthetic strategies for nanovesicle preparation.
• Genetically engineering nanovesicles (GNVs) from cellular plasma membranes.
• Ensuring ligand-oriented display of targeting moieties on the GNV surface.

Main Results:

• Successful preparation of GNVs with surface-displayed targeting moieties in a defined orientation.
• Demonstration of a biomimetic approach that overcomes limitations of nonspecific covalent coupling.
• Establishment of a method for creating nanocarriers with preserved ligand activity.

Conclusions:

• Biomimetic GNVs offer a superior platform for active targeting compared to traditional NPs.
• The described strategy facilitates the development of effective cell-specific drug delivery systems.
• This approach enables the display of various protein probes, such as antibodies and nanobodies, for tailored therapeutic applications.