Title:Synthesis and Anticancer Activity of Oral Pt(IV) Prodrugs Containing α-furancarboxylate as an Axial Ligand
Volume: 21
Issue: 13
Author(s): Anli Gao, Peng Zhou, Juan Yu, Min Luo, Jing Jiang*, Ling Zhang, Weiping Liu*Chen Qing*
Affiliation:
- State Key Laboratory of Advanced Technologies for PGM, Kunming Institute of Precious Metals, 988 Keji Road, Kunming
City, 650106, China
- State Key Laboratory of Advanced Technologies for PGM, Kunming Institute of Precious Metals, 988 Keji Road, Kunming
City, 650106, China
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural
Products, Kunming Medical University, Kunming City, China
Keywords:
Pt(IV) prodrug, oral antitumor activity, anticancer activity, cytotoxicity, synthesis, α-furancarboxylic acid.
Abstract:
Background: The clinical applications of platinum-based anticancer drugs are largely
compromised by side effects and drug resistance. Therefore, novel platinum-based anticancer drugs
with improved injected or oral therapeutic index and low resistance need to be developed.
Objective: This study aimed at the synthesis and anticancer activity testing of Pt(IV) prodrugs containing
α-furancarboxylate as an axial ligand. This would pave the way for obtaining novel Pt(IV)
prodrugs with better anticancer activity by comparing the anticancer activity with their parent platinum(
II) complexes.
Methods: In this study, synthesis, in vitro cytoxicity assay, and in vivo anticancer activity evaluation of
three Pt(IV) complexes, cis,trans,cis-[Pt(NH3)2(OH)(α-furancarboxylato)Cl2] (FPt-1), cis,trans,cis-
[Pt(NH3)2(OH)(α-furancarboxylato)(1,1'-cylobutanedicarboxylato)] (FPt-2), and cis,trans,cis-
[Pt(1R,2R-diaminocyclohexane)(OH)(α-furancarboxylato)(C2O4)] (FPt-3), were carried out.
Results: Three Pt(IV) complexes exhibited considerable cytoxicity against the tested human cancer
cells (MCF-7, A549 and HCT116), which was found to be slightly lower than the corresponding
Pt(II) drugs. However, FPt-1 and FPt-3 displayed comparable antitumor efficacy to cisplatin and
oxaliplatin in the murine S180 sarcoma model after intraperitoneal administration. More importantly,
the intragastric administration test indicated the antitumor efficacy of FPt-3 to be much greater than
oxaliplatin.
Conclusion: FPt-3 has shown excellent oral antitumor activity and it could be administrated in an
oral dosage form.