[Lentinan-graft-polyethylenimine-a novel vector for gene delivery]

Area of Science:

• Biomaterials Science
• Nanotechnology
• Gene Therapy

Context:

• Gene delivery systems are crucial for therapeutic applications.
• Non-viral vectors offer advantages over viral vectors, including lower immunogenicity and easier manufacturing.
• Developing efficient and safe non-viral vectors remains a significant challenge in gene therapy.

Purpose:

• To synthesize and characterize a novel non-viral gene delivery vector.
• To create a vector by grafting low molecular weight polyethylenimine (LNT-PEI) onto a natural polysaccharide and conjugating it with folic acid (FA), termed LNT-PEI-FA.
• To evaluate the physicochemical properties, DNA binding capability, and gene transfection efficiency of the novel vector.

Summary:

• The novel LNT-PEI-FA vector was successfully synthesized and characterized using techniques like (1)H-NMR, FT-IR, and TGA.
• The LNT-PEI-FA/DNA complex exhibited a particle size of approximately 200 nm.
• Gel electrophoresis confirmed efficient DNA condensation by LNT-PEI-FA at an N/P ratio of 1.8 (W/W), and in vitro studies demonstrated high gene transfection efficiency in A293 and B16 cell lines.

Impact:

• The development of LNT-PEI-FA offers a promising new non-viral vector for gene delivery.
• This novel vector demonstrates potential for enhanced gene transfection efficiency.
• LNT-PEI-FA could significantly contribute to advancements in gene therapy research and applications.