HDAC9 and neoplasm: Nanoassemblies of these systems were expected toexhibit preferential tumor targeting and HDAC-mediated drug release.Incubation with HDAC1 with these theranostic agents for differenttime intervals resulted in appreciable CPT release over the courseof 1 h (for 47a: 44.1%, 47b: 68.2%, and 47c: 67.7%).