Inhibitory effect of beta-diketones and their metal complexes on TNF-alpha induced expression of ICAM-1 on human endothelial cells.

Abstract:

:Recent reports show that the natural beta-diketone curcumin displays important biological properties regarding the intercellular adhesion molecule-1 (ICAM-1), which plays a critical role in the immune responses and inflammation. In this study the ICAM-1 inhibitory activity of beta-diketone compounds, which are curcumin models lacking aromatic peripheral hydroxyl and methoxy groups, along with some metal derivatives is investigated. Beta-diketones are systematically more active than metal complexes and the best obtained inhibition is 75% for both groups. The best inhibitors are 4-benzoyl-3-methyl-1-phenyl-pyrazol-5-one (HQ(Ph)) among the ligands, and sodium benzoylacetonato among metal derivatives. These results appear in line with the reported antitumor activity of related species. Since 4-acyl-5-pyrazolones posses four tautomeric forms, those corresponding to HQ(Ph) were investigated using density functional theory. Docking of all HQ(Ph) tautomers on ICAM-1 protein was performed suggesting one keto-enol form favored to act in biological environment.

journal_name

Bioorg Med Chem

authors

Caruso F,Pettinari C,Marchetti F,Rossi M,Opazo C,Kumar S,Balwani S,Ghosh B

doi

10.1016/j.bmc.2009.07.064

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

6166-72

issue

17

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(09)00720-2

journal_volume

17

pub_type

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