Volume 61, Issue 4 e202114250
Research Article

19F NMR Allows the Investigation of the Fate of Platinum(IV) Prodrugs in Physiological Conditions

Dr. Siming Yuan

Dr. Siming Yuan

Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China

Search for more papers by this author
Dr. Yang Zhu

Dr. Yang Zhu

Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China

Search for more papers by this author
Dr. Yi Dai

Dr. Yi Dai

Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China

Search for more papers by this author
Yu Wang

Yu Wang

Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China

Search for more papers by this author
Duo Jin

Duo Jin

Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China

Search for more papers by this author
Manman Liu

Manman Liu

Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China

Search for more papers by this author
Prof. Liqin Tang

Corresponding Author

Prof. Liqin Tang

Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China

Search for more papers by this author
Prof. Fabio Arnesano

Prof. Fabio Arnesano

Dipartimento di Chimica, Università di Bari “A. Moro”, via E. Orabona 4, 70125 Bari, Italy

Search for more papers by this author
Prof. Giovanni Natile

Corresponding Author

Prof. Giovanni Natile

Dipartimento di Chimica, Università di Bari “A. Moro”, via E. Orabona 4, 70125 Bari, Italy

Search for more papers by this author
Prof. Yangzhong Liu

Corresponding Author

Prof. Yangzhong Liu

Department of Pharmacy, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China

Search for more papers by this author
First published: 20 November 2021
Citations: 35

Graphical Abstract

By 19F-labeling of a PtIV prodrug (Pt-FBA, FBA=p-fluorobenzoate), the activation in vitro, in living cells and in mice could be investigated by NMR spectroscopy while avoiding the interference of all background signals and allowing the simultaneous detection of pre- and post-activation species.

Abstract

PtIV prodrugs can overcome resistance and side effects of conventional PtII anticancer therapies. By 19F-labeling of a PtIV prodrug (Pt-FBA, FBA=p-fluorobenzoate), the activation under physiological conditions could be investigated. Unlike single-electron reductants, multi-electron agents can efficiently promote the two electrons reduction of PtIV to PtII. The activation of Pt-FBA in cell lysate is highly dependent upon the type of cancer cells. When administered to E. coli, Pt-FBA is reduced intracellularly and free FBA can shuttle out of the cell. The reduction rate greatly increases by inducing metallothionein overexpression and is lowered by addition of ZnII ions. When injected into mice, Pt-FBA undergoes fast reduction in the bloodstream accompanied by metabolic degradation of FBA; nevertheless, unreduced Pt-FBA can accumulate to detectable levels in liver and kidneys. The 19F NMR approach has the advantage of avoiding the interference of all background signals.

Conflict of interest

The authors declare no conflict of interest.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.