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Binding optimization through coordination chemistry: CXCR4 chemokine receptor antagonists from ultrarigid metal complexes.

ABSTRACT: A new copper(II) containing bis-macrocyclic CXCR4 chemokine receptor antagonist is shown to have improved binding properties to the receptor protein in comparison to the drug AMD3100 (Plerixafor, Mozobil). The interaction of the metallodrug has been optimized by using ultrarigid chelator units that offer an equatorial site for coordination to the amino acid side chains of the protein. Binding competition assays with anti-CXCR4 antibodies show that the new compound stays bound longer and it has improved anti-HIV potency in vitro (EC(50) = 4.3 nM). X-ray structural studies using acetate as a model for carboxylate amino acid side chains indicate the nature of the coordination interaction.

SUBMITTER: Khan A

PROVIDER: S-EPMC2680178 | biostudies-literature | 2009 Mar

REPOSITORIES: biostudies-literature

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Binding optimization through coordination chemistry: CXCR4 chemokine receptor antagonists from ultrarigid metal complexes.

Khan Abid A Nicholson Gary G Greenman John J Madden Leigh L McRobbie Graeme G Pannecouque Christophe C De Clercq Erik E Ullom Robert R Maples Danny L DL Maples Randall D RD Silversides Jon D JD Hubin Timothy J TJ Archibald Stephen J SJ

Journal of the American Chemical Society 20090301 10

A new copper(II) containing bis-macrocyclic CXCR4 chemokine receptor antagonist is shown to have improved binding properties to the receptor protein in comparison to the drug AMD3100 (Plerixafor, Mozobil). The interaction of the metallodrug has been optimized by using ultrarigid chelator units that offer an equatorial site for coordination to the amino acid side chains of the protein. Binding competition assays with anti-CXCR4 antibodies show that the new compound stays bound longer and it has i ...[more]

PMID: 19231846

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