Highly branched poly(β-amino ester)s (HPAEs) were designed and synthesised for safe and efficient gene delivery to human keratinocytes. HPAEs outperformed commercial transfection reagents: PEI and SuperFect®, for both transfection efficiency and biocompatibility. A 22 and 3.4 fold enhancement of gene transfection was seen coupled with superior biocompatibility.
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