Description
General Description
PEI-PEG-PEI is a triblock copolymer consisting of a central PEG segment flanked by polyethyleneimine chains. The PEI blocks provide abundant primary, secondary, and tertiary amine groups capable of efficiently complexing negatively charged biomolecules such as DNA, RNA, siRNA, and mRNA. The PEG segment enhances water solubility, reduces aggregation, and improves biological compatibility.
The unique triblock architecture provides an effective balance between transfection efficiency and reduced cytotoxicity. PEI-PEG-PEI has been widely investigated as a non-viral gene delivery vector, nanoparticle stabilizer, and drug carrier. The polymer can self-assemble with nucleic acids and therapeutic agents to form nanoscale delivery systems with improved stability and cellular uptake.
Applications
- Gene delivery
- DNA transfection
- siRNA delivery
- mRNA delivery
- CRISPR/Cas delivery systems
- Nanoparticle formulation
- Drug delivery systems
- Nanomedicine research
- Tissue engineering
- Biomaterials research
Features and Benefits
- Triblock PEI-PEG-PEI architecture
- Efficient nucleic acid complexation
- Improved biocompatibility compared to PEI
- Excellent aqueous solubility
- Reduced polymer aggregation
- Enhanced nanoparticle stability
- Suitable for non-viral gene delivery
- Supports intracellular delivery applications
- Available with various PEI and PEG molecular weights
