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Polyethylenimine-modified graphene quantum dots promote endothelial cell proliferation
Qirong Xu1,2, Chen Li1,2, Xiangyan Meng3
1School of Chemistry and Chemical Engineering, Qinghai University for Nationalities, Xining 810007, PR China.
Regenerative Biomaterials
|March 25, 2024
Summary
Modified graphene quantum dots (GQDs) effectively deliver genes to promote endothelial cell proliferation. These novel gene vectors show low cytotoxicity and enhanced cell migration, offering a promising strategy for angiogenesis-related diseases.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Cell Biology
Background:
- Endothelial cell proliferation is crucial for angiogenesis and treating related diseases.
- Developing efficient and safe gene delivery vectors is essential for therapeutic applications.
Purpose of the Study:
- To evaluate the efficacy of polyethylenimine (PEI)-modified graphene quantum dots (GQDs) as gene vectors for endothelial cell proliferation.
- To assess the cytotoxicity and gene delivery efficiency of these modified GQDs.
Main Methods:
- Synthesized PEI-modified GQDs using amidation reaction for gene delivery.
- Delivered pZNF580 gene to Human umbilical vein endothelial cells (HUVECs).
- Assessed cell viability using CCK-8 and live/dead cell assays.
- Evaluated gene transfection efficiency and protein expression via Western blot.
- Measured cell migration and proliferation rates.
Main Results:
- Modified GQDs demonstrated low cytotoxicity, with cell viability exceeding 80% at 40 μg/mL.
- Gene vectors significantly enhanced pZNF580 gene delivery and expression in HUVECs compared to Lipofectamine 2000.
- Treatment groups using modified GQDs showed significantly higher cell viability, migration, and proliferation rates.
Conclusions:
- Polyethylenimine-modified graphene quantum dots are effective and safe gene carriers for promoting endothelial cell proliferation.
- These modified GQDs enhance gene delivery efficiency and cellular functions, presenting a promising therapeutic strategy for angiogenesis-related conditions.
