@article{
author = "Videnović, Milica and Opsenica, Dejan and Burnett, James C. and Gomba, Laura and Nuss, Jonathan E. and Selaković, Života and Konstantinović, Jelena M. and Krstic, Maja and Šegan, Sandra and Zlatović, Mario and Sciotti, Richard J. and Bavari, Sina and Šolaja, Bogdan",
year = "2014",
abstract = "Significantly more potent second generation 4-amino-7-chloroquinoline (4,7-ACQ) based inhibitors of the botulinum neurotoxin serotype A (BoNT/A) light chain were synthesized. Introducing an amino group at the C(3) position of the cholate component markedly increased potency (IC50 values for such derivatives ranged from 0.81 to 2.27 mu M). Two additional subclasses were prepared: bis(steroidal)-4,7-ACQ derivatives and bis(4,7-ACQ)cholate derivatives; both classes provided inhibitors with nanomolar-range potencies (e.g., the K-i of compound 67 is 0.10 mu M). During BoNT/A challenge using primary neurons, select derivatives protected SNAP-25 by up to 89%. Docking simulations were performed to rationalize the compounds' in vitro potencies. In addition to specific residue contacts, coordination of the enzyme's catalytic zinc and expulsion of the enzyme's catalytic water were a consistent theme. With respect to antimalarial activity, the compounds provided better IC90 activities against chloroquine resistant (CQR) malaria than CQ, and seven compounds were more active than mefloquine against CQR strain W2.",
publisher = "American Chemical Society (ACS)",
journal = "Journal of Medicinal Chemistry",
title = "Second Generation Steroidal 4-Aminoquinolines Are Potent, Dual-Target Inhibitors of the Botulinum Neurotoxin Serotype A Metalloprotease and P. falciparum Malaria",
volume = "57",
number = "10",
pages = "4134-4153",
doi = "10.1021/jm500033r"
}
