Journal
MOLECULAR AND BIOCHEMICAL PARASITOLOGY
Volume 225, Issue -, Pages 67-72Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molbiopara.2018.09.002
Keywords
ConBr; Molecular docking; Core trimannoside; Parasite; Anthelmintic activity
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Funding
- Fundacao de Amparo a Pesquisa e Desenvolvimento Cientifico do Maranhao (FAPEMA)
- Conselho Nacional de Desenvolvimento CientIflco e Tecnologico (CNPq)
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Haemonchus contortus is one of the most economically important parasites infecting small ruminants worldwide. This nematode has shown a great ability to develop resistance to anthelmintic drugs, calling for the development of alternative control approaches. Because lectins recognize and bind to specific carbohydrates and glycan structures present in parasites, they can be considered as an alternative to develop new antiparasitic drugs. Accordingly, this work aimed to investigate the anthelmintic effect of Canavalia brasiliensis (ConBr) lectin against H. contortus and to evaluate a possible interaction of ConBr with glycans of this parasite by molecular docking. ConBr showed significant inhibition of H. contortus larval development with an IC50 of 0.26 mg mL(-1). Molecular docking assays revealed that glycans containing the core trimannoside [Man(alpha 1-3)Man(alpha 1-6)Man] of H. contortus interact in the carbohydrate recognition domain of ConBr with an interaction value of MDS = -248.77. Our findings suggest that the inhibition of H. contortus larval development is directly related to the recognition of the core trimannoside present in the glycans of these parasites. This work is the first to report on the structure-function relationships of the anthelmintic activity of plant lectins.
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