Casini, Angela ![]() |
Abstract
A series of organometallic compounds of general formula [(arene)M(PTA)nXm]Y (arene = η6-C10H14, η-C5Me5); M = Ru(II), Os(II), Rh(III) and Ir(III); X = Cl, mPTA; Y = OTf, PF6) have been screened for their cytotoxicity and ability to inhibit cathepsin B in vitro, in comparison to the antimetastatic compound NAMI-A. The Ru and Os analogues and NAMI-A showed similar enzyme inhibition properties (with IC50 values in the low μM range), whereas the Rh(III) and Ir(III) compounds were inactive. In order to build up a rational for the observed differences, DFT calculations of the metal complexes adducts with N-acetyl-L-cysteine-N′-methylamide, a mimic for the Cys residue in the cathepsin B active site, were performed to provide insights into binding thermodynamics in solution. Initial structure–activity relationships have been defined with the calculated binding energies of the M–S bonds correlating well with the observed inhibition properties of the compounds.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Chemistry |
Subjects: | Q Science > QD Chemistry |
Publisher: | Royal Society of Chemistry |
Date of Acceptance: | 19 April 2010 |
Last Modified: | 31 Oct 2022 08:58 |
URI: | https://orca.cardiff.ac.uk/id/eprint/79341 |
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