TY - CONF
T1 - Novel poly(amido amine)s with bioreducible disulfide linkages in their diamino-units: structure effects and in vitro gene transfer properties
AU - Piest, Martin
AU - Lin, Chao
AU - Mateos Timoneda, Miguel A.
AU - Lok, Martin C.
AU - Feijen, Jan
AU - Engbersen, Johan F.J.
N1 - Conference code: 10
PY - 2008/4/2
Y1 - 2008/4/2
N2 - A series of novel water-soluble, bioreducible poly(amido amine)s (SS-PAAs) was synthesized by Michael addition polymerization of N,N′-dimethylcystamine (DMC) with various bisacrylamides. DMC-based SS-PAAs show high buffer capacities in the pH range 5.1–7.4, facilitating endosomal escape. The polymers form nanoscaled (< 250 nm) and positively charged (> + 20 mV) polyplexes which are relatively stable, but rapidly disintegrate in the presence of 2.5 mM DTT. These polyplexes have transfection efficiencies up to 4 times higher than bPEI in COS-7 cells, with low cytotoxicity.
AB - A series of novel water-soluble, bioreducible poly(amido amine)s (SS-PAAs) was synthesized by Michael addition polymerization of N,N′-dimethylcystamine (DMC) with various bisacrylamides. DMC-based SS-PAAs show high buffer capacities in the pH range 5.1–7.4, facilitating endosomal escape. The polymers form nanoscaled (< 250 nm) and positively charged (> + 20 mV) polyplexes which are relatively stable, but rapidly disintegrate in the presence of 2.5 mM DTT. These polyplexes have transfection efficiencies up to 4 times higher than bPEI in COS-7 cells, with low cytotoxicity.
U2 - 10.1016/j.jconrel.2008.09.047
DO - 10.1016/j.jconrel.2008.09.047
M3 - Abstract
SP - e12-e13
T2 - 10th European Symposium on Controlled Drug Delivery, ESCDD 2008
Y2 - 2 April 2008 through 4 April 2008
ER -