Figure 4.
(A) Chemical structure of mitochondria-penetrating peptides (MPPs) conjugated with anticancer drug cisplatin (mtPt), (B) cell cytotoxicity of mtPt in A2780 WT(wild type) and cisplatin-resistant A2780CP70 cell for an incubation time of 72 h showing similar cytotoxicity in both cell lines, (C) chemical structure of MPP conjugated with anticancer drug doxorubicin (mtDox), (D) cell cytotoxicity of mtDox in A2780ADR for a treatment period of 24 h showing higher cytotoxicity of mtDox compared with Dox. (Copyright permission received from reference [51] and [52]).