4.5 Article

NHC-Ag(I) and NHC-Au(I) Complexes with N-Boc-Protected α-Amino Acidate Counterions Powerfully Affect the Growth of MDA-MB-231 Cells

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ACS MEDICINAL CHEMISTRY LETTERS
卷 14, 期 11, 页码 1567-1575

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsmedchemlett.3c00360

关键词

NHC complexes; amino acidate ligands; anticanceractivity; human topoisomerases; actin dynamics

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N-Heterocyclic carbene metal complexes have versatile functionalization properties and are of interest for potential medicinal chemistry applications. Among them, silver and gold complexes show promising anticancer properties, affecting the growth of breast cancer cells significantly.
N-Heterocyclic carbene (NHC) metal complexes are attracting scientists' interest as an alluring class of metallodrugs. Indeed, the versatile functionalization of NHC ligands makes them optimal scaffolds to be developed in medicinal chemistry. Besides, amino acids are great biological ligands for metals, such as silver and gold, even though their use is still under-investigated. Aiming to shed light on the anticancer properties of this kind of complex, we investigated a series of silver and gold complexes, stabilized by NHC ligands and bearing carboxylate salts of tert-butyloxy-carbonyl (Boc)-N-protected glycine and l-phenyl-alanine as anionic ligands. The most active complexes, AuM1Gly and AuM1Phe, powerfully affect the growth of MDA-MB-231 breast cancer cells, with IC50 values in the low nanomolar range. Further studies demonstrated the blockade of the human topoisomerase I activity and actin polymerization reaction at 0.001 mu M. These unique features make these complexes very interesting and worthy to be used for future in vivo studies.

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