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Barbosa H, Espinoza GZ, Amaral M, de Castro Levatti EV, Abiuzi MB, Veríssimo GC, Fernandes PDO, Maltarollo VG, Tempone AG, Honorio KM, Lago JHG. Andrographolide: A Diterpenoid from Cymbopogon schoenanthus Identified as a New Hit Compound against Trypanosoma cruzi Using Machine Learning and Experimental Approaches. J Chem Inf Model 2024; 64:2565-2576. [PMID: 38148604 DOI: 10.1021/acs.jcim.3c01410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
American Trypanosomiasis, also known as Chagas disease, is caused by the protozoan Trypanosoma cruzi and exhibits limited options for treatment. Natural products offer various structurally complex metabolites with biological activities, including those with anti-T. cruzi potential. The discovery and development of prototypes based on natural products frequently display multiple phases that could be facilitated by machine learning techniques to provide a fast and efficient method for selecting new hit candidates. Using Random Forest and k-Nearest Neighbors, two models were constructed to predict the biological activity of natural products from plants against intracellular amastigotes of T. cruzi. The diterpenoid andrographolide was identified from a virtual screening as a promising hit compound. Hereafter, it was isolated from Cymbopogon schoenanthus and chemically characterized by spectral data analysis. Andrographolide was evaluated against trypomastigote and amastigote forms of T. cruzi, showing IC50 values of 29.4 and 2.9 μM, respectively, while the standard drug benznidazole displayed IC50 values of 17.7 and 5.0 μM, respectively. Additionally, the isolated compound exhibited a reduced cytotoxicity (CC50 = 92.8 μM) against mammalian cells and afforded a selectivity index (SI) of 32, similar to that of benznidazole (SI = 39). From the in silico analyses, we can conclude that andrographolide fulfills many requirements implemented by DNDi to be a hit compound. Therefore, this work successfully obtained machine learning models capable of predicting the activity of compounds against intracellular forms of T. cruzi.
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Affiliation(s)
- Henrique Barbosa
- Center for Natural and Human Sciences, Federal University of ABC, São Paulo 09210-180, Brazil
| | | | - Maiara Amaral
- Laboratory of Pathophysiology, Butantan Institute, São Paulo 05503-900, Brazil
| | | | | | - Gabriel Correa Veríssimo
- Department of Pharmaceutical Products, Federal University of Minas Gerais, Minas Gerais, 31270-901, Brazil
| | | | | | | | - Kathia Maria Honorio
- Center for Natural and Human Sciences, Federal University of ABC, São Paulo 09210-180, Brazil
- School of Arts, Science, and Humanities, University of São Paulo, São Paulo 03828-000, Brazil
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Duarte N. Special Issue on Plant and Marine-Derived Natural Product Research in Drug Discovery: Strengths and Perspective. Pharmaceuticals (Basel) 2022; 15:ph15101249. [PMID: 36297361 PMCID: PMC9608971 DOI: 10.3390/ph15101249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 09/28/2022] [Indexed: 11/25/2022] Open
Affiliation(s)
- Noélia Duarte
- Research Institute for Medicines (iMED.Ulisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
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Djiazet S, Blandine Mezajoug Kenfack L, Serge Ngangoum E, Nzali Ghomdim H, Tchiégang C. Indigenous spices consumed in the food habits of the populations living in some countries of Sub-Saharan Africa: Utilisation value, nutritional and health potentials for the development of functional foods and drugs: A review. Food Res Int 2022; 157:111280. [DOI: 10.1016/j.foodres.2022.111280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 11/04/2022]
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