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Polydepsipeptide Block-Stabilized Polyplexes for Efficient Transfection of Primary Human Cells
Weiwei Wang1, Toufik Naolou1, Nan Ma1,2
1Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies , Helmholtz-Zentrum Geesthacht, 14513 Teltow, Germany.
Biomacromolecules
|September 28, 2017
Summary
New gene carriers combine depsipeptide and polyethyleneimine (PEI) for effective and safe DNA delivery. These stable polyplex nanoparticles show promise for gene therapy, especially in human cells.
Area of Science:
- Biomaterials Science
- Gene Therapy
- Nanotechnology
Background:
- Developing effective gene carriers is crucial for nucleic acid transfection.
- Balancing transfection efficiency with minimal cellular toxicity remains a challenge.
Purpose of the Study:
- To design and characterize novel polyplex gene carriers based on depsipeptide-PEI copolymers.
- To evaluate the efficacy and safety of these nanocarriers for gene delivery.
Main Methods:
- Synthesis of di- and triblock copolymers conjugating depsipeptide blocks with PEI moieties.
- Formation of polyplex nanoparticles and complexation with DNA.
- Assessment of polyplex stability, size, cellular uptake, and gene delivery efficiency.
Main Results:
- Polyplexes exhibited enhanced stability compared to PEI-only or lipoplexes.
- Efficient cytoplasmic uptake and perinuclear DNA release were observed.
- A specific triblock copolymer demonstrated high transgenic VEGF secretion in stem cells with low cytotoxicity.
Conclusions:
- Depsipeptide-PEI copolymers represent a promising platform for gene delivery.
- These nanocarriers offer a potential solution for gene transfer into primary human cells.
- The developed system balances transfection effectiveness with reduced adverse effects.
