Towards Ruthenium(II)-Rhenium(I) Binuclear Complexes as Photosensitizers for Photodynamic Therapy

Youchao Wang, Patrick S. Felder, Pierre Mesdom, Olivier Blacque, Thomas L. Mindt, Kevin Cariou (Corresponding author), Gilles Gasser (Corresponding author)

Publications: Contribution to journalArticlePeer Reviewed

Abstract

The search for new metal-based photosensitizers (PSs) for anticancer photodynamic therapy (PDT) is a fast-developing field of research. Knowing that polymetallic complexes bear a high potential as PDT PSs, in this study, we aimed at combining the known photophysical properties of a rhenium(I) tricarbonyl complex and a ruthenium(II) polypyridyl complex to prepare a ruthenium-rhenium binuclear complex that could act as a PS for anticancer PDT. Herein, we present the synthesis and characterization of such a system and discuss its stability in aqueous solution. In addition, one of our complexes prepared, which localized in mitochondria, was found to have some degree of selectivity towards two types of cancerous cells: human lung carcinoma A549 and human colon colorectal adenocarcinoma HT29, with interesting photo-index (PI) values of 135.1 and 256.4, respectively, compared to noncancerous retinal pigment epithelium RPE1 cells (22.4).

Original languageEnglish
Article numbere202300467
JournalChemBioChem
Volume24
Issue number19
DOIs
Publication statusPublished - 4 Oct 2023

Austrian Fields of Science 2012

  • 104003 Inorganic chemistry
  • 301303 Medical biochemistry

Keywords

  • bioinorganic chemistry
  • metals in medicine
  • photodynamic therapy
  • Rhenium(I) complex
  • Ruthenium(II) complex

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