RETRACTED: Proton-pumping-ATPase-targeted antifungal activity of cinnamaldehyde based sulfonyl tetrazoles
作者:Sheikh Shreaz、Mohmmad Younus Wani、Sheikh Rayees Ahmad、Sheikh Imran Ahmad、Rimple Bhatia、Fareeda Athar、Manzoor Nikhat、Luqman A. Khan
DOI:10.1016/j.ejmech.2011.12.007
日期:2012.2
Azoles are generally fungistatic, and resistance to fluconazole is emerging in several fungal pathogens. We designed a series of cinnamaldehyde based sulfonyl tetrazole derivatives. To further explore the antifungal activity, in vitro studies were conducted against 60 clinical isolates and 6 standard laboratory strains of Candida. The rapid irreversible action of these compounds on fungal cells suggested a membrane-located target for their action. Results obtained indicate plasma membrane H+-ATPase as site of action of the synthesized compounds. Inhibition of H+-ATPase leads to intracellular acidification and cell death. Presence of chloro and nitro groups on the sulfonyl pendant has been demonstrated to be a key structural element of antifungal potency. SEM micrographs of treated Candida cells showed severe cell breakage and alterations in morphology. (C) 2011 Elsevier Masson SAS. All rights reserved.