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Cationic helical polypeptides, although highly efficient for inducing membrane penetration, cannot stably condense siRNA molecules via electrostatic interactions, which greatly limit the gene knockdown efficiency. By developing and crosslinking the thiolated polypeptide via formation of disulfide bonds post formation of the polypeptide/siRNA complexes, we were able to obtain stable complexes without...
Poly(γ-4-((2-(piperidin-1-yl)ethyl)aminomethyl)benzyl-l-glutamate) (PPABLG), a cationic helical polypeptide, has been recently developed by us as an effective non-viral gene delivery vector. In attempts to elucidate the effect of molecular architecture on the gene delivery efficiencies and thereby identify a potential addition to PPABLG with improved transfection efficiency and reduced cytotoxicity,...
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