Pt(IV) Bifunctional Prodrug Containing 2-(2-Propynyl)octanoato Axial Ligand: Induction of Immunogenic Cell Death on Colon Cancer a

Maurizio Sabbatini, Ilaria Zanellato, Mauro Ravera, Elisabetta Gabano, Elena Perin, Beatrice Rangone, Domenico Osella

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

The synthesis, characterization, and in vitro activity of a cyclohexane-1R,2R-diamine-based Pt(IV) derivative containing the histone deacetylase inhibitor rac-2-(2-propynyl)octanoato, namely, (OC-6-44)-acetatodichlorido(cyclohexane-1R,2R-diamine)(rac-2-(2-propynyl)octanoato)platinum(IV), are reported together with those of its isomers containing enantiomerically enriched axial ligands. These Pt(IV) complexes showed comparable activity, of 2 orders of magnitude higher than reference drug oxaliplatin on three human (HCT 116, SW480, and HT-29) and one mouse (CT26) colon cancer cell lines. In vivo experiments were carried out on immunocompetent BALB/c mice bearing the same syngeneic tumor. The complex (OC-6-44)-acetatodichlorido(cyclohexane-1R,2R-diamine)(rac-2-(2-propynyl)octanoato)platinum(IV) showed higher tumor mass Pt accumulation than oxaliplatin, due to its higher lipophilicity, with negligible nephro- and hepatotoxicities when administered intravenously. A remarkable tumor mass invasion by cytotoxic CD8+ T lymphocytes, following the Pt(IV) treatment, indicated a strong induction of immunogenic cell death.

Lingua originaleInglese
pagine (da-a)3395-3406
Numero di pagine12
RivistaJournal of Medicinal Chemistry
Volume62
Numero di pubblicazione7
DOI
Stato di pubblicazionePubblicato - 11 apr 2019

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