Biocompatible fluorinated poly(β-amino ester)s for safe and efficient gene therapy

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Gene Therapy Vectors

Background:

• Cationic polymers are explored as safe, scalable non-viral gene delivery vehicles.
• Poly(β-amino ester)s (PBAEs) are biodegradable polymers with gene delivery potential.
• Fluorination can enhance polymer properties for biomedical applications.

Purpose of the Study:

• To design and synthesize novel biodegradable fluorinated poly(β-amino ester)s (FPBAEs).
• To evaluate the gene transfection efficacy and biocompatibility of FPBAEs as gene carriers.
• To investigate the impact of fluorination on gene delivery performance and toxicity.

Main Methods:

• Synthesis of FPBAEs via Michael-addition reaction.
• In vitro gene transfection assays using GFP expression in HeLa and HEK-293T cells.
• Cytotoxicity assessment using MTT assays.
• Biocompatibility evaluation through hemolysis assays.

Main Results:

• The optimal FPBAE demonstrated significantly higher GFP expression than PEI 25K and Lipo 2000.
• FPBAE achieved higher transfection efficiency (70-90%) compared to non-fluorinated PBAEs.
• FPBAE exhibited lower toxicity and preferable biocompatibility compared to PEI 25K.

Conclusions:

• Novel FPBAEs are effective and safe gene carriers.
• Fluorination enhances gene transfection efficacy.
• FPBAEs represent a desirable alternative to existing gene vectors due to their efficacy and low toxicity.