Revisiting the anticancer properties of phosphane(9-ribosylpurine-6-thiolato)gold(I) complexes and their 9H-purine precursors

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00007034
URN to cite this document: urn:nbn:de:bvb:703-epub-7034-7

Title data

Kober, Luisa ; Schleser, Sebastian W. ; Bär, Sofia I. ; Schobert, Rainer:
Revisiting the anticancer properties of phosphane(9-ribosylpurine-6-thiolato)gold(I) complexes and their 9H-purine precursors.
In: JBIC Journal of Biological Inorganic Chemistry. Vol. 27 (2022) Issue 8 . - pp. 731-745.
ISSN 1432-1327
DOI der Verlagsversion: https://doi.org/10.1007/s00775-022-01968-x

	Format: PDF Name: s00775-022-01968-x.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Project information

Project financing:	Deutsche Forschungsgemeinschaft

Abstract

New mono- and di-nuclear thio-purine and thio-purine nucleoside gold(I) complexes were synthesized, characterized, and evaluated in vitro for biological activities in comparison to related known purine complexes. By combining known anti-tumoral thio-purines with R3PAu moieties as present in auranofin, complexes with enhanced effects and selectivities were obtained, which not only act as cytostatics, but also disrupt tumor-specific processes. Their IC50 values in cytotoxicity test with tumor cell lines ranged from three-digit nanomolar to single-digit micromolar, revealing a tentative structure–activity relationship (SAR). Both the residues R2 of the phosphane ligand and R1 at C2 of the pyrimidine ring had a significant impact on the cytotoxicity. In most cases, the introduction of a ribo-furanosyl group at N9 of the purine led to a distinctly more cytotoxic complex. Most complexes were more active against multi-drug-resistant tumor cells or such lacking functional p53 when compared to the respective untreated wild type cell lines. Some nucleoside complexes displayed an interesting dose-dependent dual mode of action regarding cell cycle arrest and DNA repair mechanism. Some phosphane(purine-6-thiolato)gold (I) complexes had a stronger inhibitory effect on the thioredoxin reductase (TrxR) and on the reactive oxygen species (ROS) generation in cancer cells than is typical of other gold complexes. They also led to DNA fragmentation and showed anti-angiogenic effects. Their stability under test conditions was demonstrated by 77Se NMR monitoring of an exemplary selenopurine complex.

Further data

Item Type:	Article in a journal
Keywords:	Anticancer compounds; Gold(I) complexes; Thioredoxin reductase (TrxR) inhibitors; Triorganophosphanes; Nucleosides; Auranofin
DDC Subjects:	500 Science > 540 Chemistry
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Organic Chemistry I - Univ.-Prof. Dr. Rainer Schobert Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-7034-7
Date Deposited:	09 Jun 2023 09:58
Last Modified:	09 Jun 2023 09:58
URI:	https://epub.uni-bayreuth.de/id/eprint/7034

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