A deliver system based on a PZLL and PAMAM block copolymer (PZLL-D3) with TAT modified the surface has been developed. It is designed to perform highly efficient nucleus-targeted gene drug co-delivery. Confocal laser scanning microscopy (CLSM) revealed that more TAT-PZLL-D3 entered nucleus than does PZLL-D3 alone. The TAT-modified vector serves as co-delivery achieve high transfection efficienc...