REDV-polyethyleneimine complexes for selectively enhancing gene delivery in endothelial cells

Area of Science:

• Biomaterials Science
• Gene Therapy
• Nanotechnology

Background:

• Endothelialization is crucial for artificial vascular implants, but current gene delivery systems face challenges with low transfection efficiency and high cytotoxicity.
• Rapid endothelialization is key to preventing thrombosis and restenosis.

Purpose of the Study:

• To develop an endothelial cell (EC)-specific gene carrier with improved transfection efficiency and reduced cytotoxicity.
• To utilize gene therapy to enhance endothelialization for better outcomes in artificial vascular implants.

Main Methods:

• Synthesized REDV peptide-modified copolymers (REDV-PPP) using NHS-PEG-MAL linker and self-assembled them into nanoparticles (NPs).
• Condensed EGFP-ZNF580 plasmid (pZNF580) with NPs to form REDV peptide functionalized NP/pZNF580 complexes.
• Evaluated transfection efficiency, cytotoxicity, and EC migration in vitro.

Main Results:

• REDV-PPP NPs effectively condensed pZNF580 with low cytotoxicity.
• Transfection efficiency of REDV-functionalized NPs in ECs was comparable to the positive control.
• Enhanced cell uptake and improved EC migration were observed, correlating with REDV peptide quantity.

Conclusions:

• The developed REDV peptide functionalized NPs offer a promising platform for EC-specific gene delivery.
• This approach demonstrates potential for enhancing endothelialization via gene therapy, addressing limitations of current methods.
• The study provides a foundation for designing advanced gene carriers for vascular applications.