Scheme 1From: Targeting and sensitizing MDR cancer by an MMP2 and pH dual-responsive ZnO-based nanomedicineA Preparation of the ZnO/DPPG/PEG-pp-PE/DOX NPs. B Schematic illustration of the MMP2 and pH dual-responsive ZnO-based polymer-lipid hybrid nanoparticles for tumor-targeted drug delivery and MDR cancer treatmentBack to article page