Benzophenone derivatives as cysteine protease inhibitors and biological activity against Leishmania(L.) amazonensis amastigotes - 12/10/15
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Abstract |
The leishmanicidal potential of benzophenones has been described, some of them highlighting their potential as cysteine protease inhibitors. Therefore, this work described leishmanicidal activity of nine benzophenone derivatives (1a–c;2a–c;3a–c) against intramacrophage amastigote forms of Leishmania(L.) amazonensis (IC50) and the cytotoxic effect on murine peritoneal macrophages (CC50). The derivative 1c exhibited a selectivity index SI (CC50/IC50) of 6.7, besides cytotoxicity lower than Amphotericin B (p< 0.05). Moreover it showed inhibitory activity against papain (42.8±0.3, p<0.05), and when tested on trypanosomatids cysteine proteases 1c also proved to be a potent inhibitor of rCPB2.8, rCPB3.0 and cruzain, showing non-competitive inhibition mechanism by enzymatic assays in vitro.So, benzophenone 1c is interesting drug candidate prototype, with a multi-target directed mode of action, inhibiting rCPB2.8, rCPB3.0 and cruzain.
Le texte complet de cet article est disponible en PDF.Abbreviations : Z-F-R-MCA, CPs, MTT, FBS, 1a, 1b, 1c, 2a, 2b, 2c, 3a, AmpB, DMSO, IC50, μM, CC50, SI, DTT, rCPB2.8, rCPB3.0, E, I, EI, S, EIS
Keywords : Leishmania amazonensis, Benzophenone derivatives, Cysteine proteases
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Vol 75
P. 93-99 - octobre 2015 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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