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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Annotation of Alkaloids of Fusaea longifolia and Evaluation of Anti-Plasmodium Activity in vitro and in silico

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Author(s):
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Asenate A. X. Adrião [1] ; Carlos V. A. da Silva [2] ; Morgana S. Araujo [3] ; Weider H. P. Paz [4] ; Lívia S. de Medeiros [5] ; Felipe M. A. da Silva [6] ; Daniel P Bezerra [7] ; Zeca M. Salimo [8] ; Wuelton M. Monteiro [9] ; Gisely C. de Melo [10] ; Emmanoel V. Costa [11] ; Josean F. Tavares [12] ; Hector H. F. Koolen [13]
Total Authors: 13
Affiliation:
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[1] Universidade do Estado do Amazonas. Grupo de Pesquisas em Metabolômica e Espectrometria de Massas - Brasil
[2] Universidade do Estado do Amazonas. Grupo de Pesquisas em Metabolômica e Espectrometria de Massas - Brasil
[3] Universidade Federal do Amazonas. Departamento de Química - Brasil
[4] Universidade do Estado do Amazonas. Grupo de Pesquisas em Metabolômica e Espectrometria de Massas - Brasil
[5] Universidade Federal de São Paulo. Instituto de Ciências Ambientais, Químicas e Farmacêuticas - Brasil
[6] Universidade Federal do Amazonas. Centro de Apoio Multidisciplinar - Brasil
[7] Fundação Oswaldo Cuz. Instituto Gonçalo Moniz - Brasil
[8] Fundação de Medicina Tropical Dr. Heitor Vieira Dourado. Departamento de Ensino e Pesquisa - Brasil
[9] Fundação de Medicina Tropical Dr. Heitor Vieira Dourado. Departamento de Ensino e Pesquisa - Brasil
[10] Fundação de Medicina Tropical Dr. Heitor Vieira Dourado. Departamento de Ensino e Pesquisa - Brasil
[11] Universidade Federal do Amazonas. Departamento de Química - Brasil
[12] Universidade Federal da Paraíba. Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos - Brasil
[13] Universidade do Estado do Amazonas. Grupo de Pesquisas em Metabolômica e Espectrometria de Massas - Brasil
Total Affiliations: 13
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 35, n. 7 2024-02-12.
Abstract

Isoquinoline alkaloids, especially from the Annonaceae family, have shown biological potential against parasites. Thus, this study aimed to evaluate the potential of the alkaloid fractions of the plant Fusaea longifolia against Plasmodium falciparum and annotate the compounds present in these samples. The tentative characterization of the alkaloids from the leaves and branches of F. longifolia was performed using liquid chromatography coupled to mass spectrometry (LC-MS/MS) and molecular networks. Through manual interpretation of the MS/MS spectra, 18 alkaloids were dereplicated from F. longifolia, 17 of which were reported for the first time in this species. An unpublished putative glycosylated alkaloid was annotated by interpreting the fragmentation data profile. Regarding biological activity, the fractions studied showed high activity against P. falciparum with half-maximal inhibitory concentration (IC50) of 2.42 and 1.60 μg mL-1 for branches and from the leaves, respectively, both similar to the reference standard quinine (IC50 of 1.24 μg mL-1). The structures of the 17 alkaloids were subjected to in silico analysis using molecular docking against four enzymes related to anti-Plasmodium activity (wild type (dm-PfDHFR) and mutant type (qm-PfDHFR), dihydroorotate dehydrogenase (PfDHODH) and purine nucleoside phosphorylase (PfPNP)). Molecular docking revealed strong interactions, especially between oxoxylopine 17 and hydroxycassythicine N-oxide 10, which may be potential new sources against P. falciparum. (AU)

FAPESP's process: 20/08270-0 - Metabolic diversification of Penicillium fungi isolated from the Atlantic Forest and Amazon biomes: a perspective for biomolecules production
Grantee:Lívia Soman de Medeiros
Support Opportunities: Regular Research Grants