Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/26771
Title: In silico identification of inhibitors of ribose 5-phosphate isomerase from Trypanosoma cruzi using ligand and structure based approaches
Authors: Sinatti, Vanessa de V. C.
Baptista, Luiz Phillippe R.
Ferreira, Marcelo Alves
Dardenne, Laurent
Silva, João Hermínio Martins da
Guimarães, Ana Carolina
Affilliation: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Genômica Funcional e Bioinformática. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Genômica Funcional e Bioinformática. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Centro de Desenvolvimento Tecnológico em Saúde. Laboratório de Modelagem de Sistemas Biológicos. Rio de Janeiro, RJ, Brasil / Instituto Nacional de Ciência e Tecnologia em Inovação em Doenças de Populações Negligenciadas. Brasil.
Laboratório Nacional de Computação Científica. Grupo de Modelagem Molecular de Sistemas Biológicos. Petrópolis, RJ, Brasil.
Fundação Oswaldo Cruz. Grupo de Modelagem Computacional. Fortaleza, CE, Brasil. .
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Genômica Funcional e Bioinformática. Rio de Janeiro, RJ. Brasil.
Abstract: Chagas disease, caused by the protozoan Trypanosoma cruzi, affects approximately seven million people, mainly in Latin America, and causes about 7000 deaths annually. The available treatments are unsatisfactory and search for more effective drugs against this pathogen is critical. In this context, the ribose 5-phosphate isomerase (Rpi) enzyme is a potential drug target mainly due to its function in the pentose phosphate pathway and its essentiality (previously shown in other trypanosomatids). In this study, we propose novel potential inhibitors for the Rpi of T. cruzi (TcRpi) based on a computer-aided approach, including structure-based and ligand-based pharmacophore modeling. Along with a substructural and similarity search, the selected pharmacophore hypotheses were used to screen the purchasable subset of the ZINC Database, yielding 20,183 candidate compounds. These compounds were submitted to molecular docking studies in the TcRpi and Human Rpi (HsRpi) active sites in order to identify potential selective inhibitors for the T. cruzi enzyme. After the molecular docking and ADME-T (absorption, distribution, metabolism, excretion and toxicity)/PAINS (pan-assay interference compounds) screenings, 211 molecules were selected as potential TcRpi inhibitors. Out of these, three compounds - ZINC36975961, ZINC63480117, and ZINC43763931 - were submitted to molecular dynamics simulations and two of them - ZINC36975961 and ZINC43763931- had good performance and made interactions with important active site residues over all the simulation time. These compounds could be considered potential TcRpi inhibitors candidates and also may be used as leads for developing new TcRpi inhibitors.
Keywords: Ribose 5-phosphate isomerase
Trypanosoma cruzi
Chagas Disease
Virtual screening
Pharmacophore modelling
Molecular docking
Molecular dynamics
ADMET
keywords: Trypanosoma cruzi
Doença de Chagas
Triagem virtual
Modelagem Farmacóforo
Ancoragem Molecular
Dinâmica Molecular
Issue Date: 2017
Publisher: Elsevier
Citation: SINATTI, Vanessa de V. C. et al. In silico identification of inhibitors of ribose 5-phosphate isomerase from Trypanosoma cruzi using ligand and structure based approaches. Journal of Molecular Graphics and Modelling, v.77, p.168-180, Aug. 2017.
DOI: 10.1016/j.jmgm.2017.08.007
ISSN: 1093-3263
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos

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