Fig. 1

a Schematic structure of typical PEG-PLA nanoparticles with drugs in the PLA core (left), an amphiphilic dendrimersome and its complex with siRNA (middle), and the three layer structure of the ADENS (right). b Representation of the MMP-2/9 response, internalization and intracellular transportation of TMSP-ADENS. The simultaneous delivery of siRNA and PTX in tumor cells is the basis for the optimal therapeutic efficacy of the combination strategy of siVEGF for anti-angiogenesis and PTX for cytotoxicity