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Browsing by Author "Oliveira, Rudi"

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  • Artemisinin-dipeptidyl vinyl sulfone hybrid molecules
    Publication . Capela, Rita; Oliveira, Rudi; Goncalves, Lidia M.; Domingos, Ana; Gut, Jiri; Rosenthal, Philip J.; Lopes, Francisca; Moreira, Rui
    A series of artemisinin-vinyl sulfone hybrid molecules with the potential to act in the parasite food vacuole via endoperoxide activation and falcipain inhibition was synthesized and screened for antiplasmodial activity and falcipain-2 inhibition. All conjugates were active against the Plasmodium falciparum W2 strain in the low nanomolar range and those containing the Leu-hPhe core inhibited falcipain-2 in low micromolar range. (C) 2009 Elsevier Ltd. All rights reserved.. - FCT (Portugal) [SFRH/BD/30418/2006]; National Institutes of Health. - This work was supported by FCT (Portugal) and the National Institutes of Health; R. C. acknowledges FCT for the PhD grant SFRH/BD/30418/2006. PJR is a Doris Duke Charitable Foundation Distinguished Clinical Scientist.
    2009Journal article Metadata only Show more
  • Evaluation of linker length effects on a BET bromodomain probe
    Publication . Traquete, Rui; Henderson, Elizabeth; Picaud, Sarah; Cal, Pedro M.S.D.; Sieglitz, Florian; Rodrigues, Tiago; Oliveira, Rudi; Filippakopoulos, Panagis; Bernardes, Gonçalo J. L.
    Fueled by the therapeutic potential of the epigenetic machinery, BET bromodomains have seen high interest as drug targets. Herein, we introduce different linkers to a BET bromodomain benzodiazepine ligand (I-BET762) to gauge its implications in the development of hybrid drugs, imaging probes and small molecule drug conjugates. Biophysical studies confirmed minimal disruption to binding of the BRD4 cavity by the synthesized entities, which includes imaging probes. Target engagement was confirmed in a cellular context, but poor membrane diffusion was found despite efficient localization in the nuclei after membrane disruption. Our study highlights challenges and opportunities for the successful design of benzodiazepine-derived drug-delivery systems.
    2019Journal article Restricted access Show more