Citation
- Authors: Ripoll, M., Neuberg, P., Kichler, A., Tounsi, N., Wagner, A., Remy, J. S.
- Year: 2016
- Journal: ACS Appl Mater Interfaces
- Applications: in vitro / siRNA / INTERFERin
- Cell type: A549
Description: Human lung carcinoma cells, type II pneumocytes
Known as: A-549
Method
24 hours prior to transfection, 2.5 × 10^4 cells were seeded per well of a 24-well plate. Cells were transfected with 10 nM of siRNA using INTERFERin, according to the manufacturer's instructions.
Abstract
A novel generation of pH-responsive photopolymerized diacetylenic amphiphile (PDA) micelles with a diameter of 10 nm was designed and optimized for the intracellular delivery of siRNAs. Dialysis and photopolymerization of the micelles allowed a strong reduction of the cytotoxicity of the nanovector, while the hydrophilic histidine headgroup permitted enhancing the siRNA delivery potential by improving the endosomal escape via imidazole protonation. These PDA-micellar systems were fully characterized by DLS, TEM, and DOSY-NMR experiments. The resulting bioactive complexes of PDA-micelles with siRNA were shown to have an optimal size below 100 nm.