Cleavable modifications to reducible poly (amido ethylenimines)s to enhance nucleotide delivery

摘要

Polyplex formulations were prepared using p(TETA/CBA), its PEGylated analog, p(TETA/CBA)-g-PEG2k, and mixtures of the two species at 10/90 and 50/50 wt %, respectively. Increasing PEG wt% inhibited polyplex formation. This work demonstrates the feasibility of preparing homogenous polyplexes by altering the PEG wt% using a mixture of p(TETA/CBA) and p(TETA/CBA)-g-PEG2k products. Further, a single-step method of making p(TETA/CBA)-g-PEG2k is disclosed.