RT info:eu-repo/semantics/article T1 Novel phosphine sulphide gold(i) complexes: topoisomerase I inhibitors and antiproliferative agents A1 Martín Encinas, Endika A1 Conejo Rodríguez, Verónica A1 Miguel García, Jesús Ángel A1 Martínez de Ilarduya Martínez de Ilarduya, Jesús María A1 Rubiales, Gloria A1 Knudsen, Birgitta Ruth A1 Palacios, Francisco A1 Alonso Pérez, Concepción Estibaliz K1 Gold complexes K1 Complejos de oro K1 Topoisomerase K1 Topoisomerasa AB This work describes the synthesis of the gold(I) complexes of phosphine sulphides. The formation of these new derivatives has been confirmed by X-ray crystallography. The coordination of gold(I) with the sulphur atom of the phosphine sulphides favors the inhibition of topoisomerase I as well as a high cytotoxicity of the gold(I)-complexed compounds against the cancer line A549 with IC50 values in the nanomolar range and IC50 values below 5 μM against the SKOV3 cell line. It should be noted that the cytotoxicities observed for the new gold(I) complexes are higher than those observed for phosphine sulphide ligands before binding to gold. Furthermore, the results also indicate that the presence of a nitrogenated heterocycle, such as tetrahydroquinoline or quinoline, is also necessary for the TopI inhibition to be maintained. In addition, no toxicity was observed when the non-cancerous lung fibroblast cell line (MRC5) was treated with the new phosphine sulphide gold(I) complexes prepared. PB Royal Society of Chemistry SN 1477-9234 YR 2020 FD 2020 LK https://uvadoc.uva.es/handle/10324/52800 UL https://uvadoc.uva.es/handle/10324/52800 LA eng NO Dalton Transactions, 2020, vol. 49, n. 23. p. 7852-7861 NO Producción Científica DS UVaDOC RD 20-oct-2024