Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/50071
Title: Investigation of the antileishmanial activity and mechanisms of action of acetyl-thiohydantoins
Authors: Bortoleti, Bruna Taciane da Silva
Gonçalves, Manoela Daiele
Tomiotto-Pellissier, Fernanda
Camargo, Priscila Goes
Assolini, João Paulo
Concato, Virgínia Márcia
Detoni, Mariana Barbosa
Bidóia, Danielle Larazin
Bispo, Marcelle de Lima Ferreira
Lima, Camilo Henrique da Silva
Macedo Junior, Fernando Cesar de
Conchon-Costa, Ivete
Miranda-Sapla, Milena Menegazzo
Wowk, Pryscilla Fanini
Pavanelli, Wander Rogério
Affilliation: Fundação Oswaldo Cruz. Instituto Carlos Chagas. Programa de Pós-Graduação em Biociências e Biotecnologia. Curitiba, PR, Brasil. / Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Universidade Estadual de londrina. Laboratório de Biotransformação e Fitoquímica. Londrina, PR, Brasil.
Fundação Oswaldo Cruz. Instituto Carlos Chagas. Programa de Pós-Graduação em Biociências e Biotecnologia. Curitiba, PR, Brasil. / Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Universidade Estadual de londrina. Laboratório de Pesquisa em Moléculas Bioativas. Londrina, PR, Brasil.
Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Universidade Estadual de Londrina. Laboratório de Síntese de Moléculas Medicinais. Londrina, PR, Brasil.
Universidade Federal do Rio de Janeiro. Instituto de Química. Rio de Janeiro, RJ, Brasil.
Universidade Estadual de londrina. Laboratório de Pesquisa em Moléculas Bioativas. Londrina, PR, Brasil.
Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Fundação Oswaldo Cruz. Instituto Carlos Chagas. Curitiba, PR, Brasil.
Universidade Estadual de Londrina. Laboratório de Imunoparasitologia. Londrina, PR, Brasil.
Abstract: The currently available treatment options for leishmaniasis are associated with high costs, severe side effects, and high toxicity. In previous studies, thiohydantoins demonstrated some harmacological activities and were shown to be potential hit compounds with antileishmanial properties. The present study further explored the antileishmanial effect of acetyl-thiohydantoins against Leishmania amazonensis and determined the main processes involved in parasite death. We observed that compared to thiohydantoin nuclei, acetyl-thiohydantoin treatment inhibited the proliferation of promastigotes. This treatment caused alterations in cell cycle progression and parasite size and caused morphological and ultrastructural changes. We then investigated the mechanisms involved in the death of the protozoan; there was an increase in ROS production, phosphatidylserine exposure, and plasma membrane permeabilization and a loss of mitochondrial membrane potential, resulting in an accumulation of lipid bodies and the formation of autophagic vacuoles on these parasites and confirming an apoptosis-like process. In intracellular amastigotes, selected acetyl-thiohydantoins reduced the percentage of infected macrophages and the number of amastigotes/macrophages by increasing ROS production and reducing TNF-α levels. Moreover, thiohydantoins did not induce cytotoxicity in murine macrophages (J774A.1), human monocytes (THP-1), or sheep erythrocytes. In silico and in vitro analyses showed that acetyl-thiohydantoins exerted in vitro antileishmanial effects on L. amazonensis promastigotes in apoptosis-like and amastigote forms by inducing ROS production and reducing TNF-α levels, indicating that they are good candidates for drug discovery studies in leishmaniasis treatment. Additionally, we carried out molecular docking analyses of acetyl-thiohydantoins on two important targets of Leishmania amazonensis: arginase and TNF-alpha converting enzyme. The results suggested that the acetyl groups in the N1-position of the thiohydantoin ring and the ring itself could be pharmacophoric groups due to their affinity for binding amino acid residues at the active site of both enzymes via hydrogen bond interactions. These results demonstrate that thiohydantoins are promising hit compounds that could be used as antileishmanial agents.
Keywords: Apoptosis-like
Thiohydantoins
Molecular Docking Simulation
???metadata.dc.subject.fr???: Apoptose
Thiohydantoïnes
Simulation de docking moléculaire
Keywords in spanish: Apoptosis
Tiohidantoínas
Simulación del Acoplamiento Molecular
DeCS: Apoptose
Tioidantoínas
Simulação de Acoplamento Molecular
Leishmania
Issue Date: 2022
Publisher: Elsevier. International Society for the Study of Xenobiotics
Citation: BORTOLETI, Bruna Taciane da Silva et al. Investigation of the antileishmanial activity and mechanisms of action of acetyl-thiohydantoins. Chemico-Biological Interactions. v. 351, n. 109690, p. 1–15, 2022.
DOI: 10.1016/j.cbi.2021.109690
ISSN: 0009-2797
Copyright: open access
Appears in Collections:PR - ICC - Artigos de Periódicos
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