1
|
de Albuquerque KCO, da Veiga ADSS, Silveira FT, Campos MB, da Costa APL, Brito AKM, Melo PRDS, Percario S, de Molfetta FA, Dolabela MF. Anti-leishmanial activity of Eleutherine plicata Herb. and predictions of isoeleutherin and its analogues. Front Chem 2024; 12:1341172. [PMID: 38510811 PMCID: PMC10950963 DOI: 10.3389/fchem.2024.1341172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 02/16/2024] [Indexed: 03/22/2024] Open
Abstract
Introduction: Leishmaniasis is caused by protozoa of the genus Leishmania, classified as tegumentary and visceral. The disease treatment is still a serious problem, due to the toxic effects of available drugs, the costly treatment and reports of parasitic resistance, making the search for therapeutic alternatives urgent. This study assessed the in vitro anti-leishmanial potential of the extract, fractions, and isoeleutherin from Eleutherine plicata, as well as the in silico interactions of isoeleutherin and its analogs with Trypanothione Reductase (TR), in addition to predicting pharmacokinetic parameters. Methods: From the ethanolic extract of E. plicata (EEEp) the dichloromethane fraction (FDEp) was obtained, and isoeleutherin isolated. All samples were tested against promastigotes, and parasite viability was evaluated. Isoeleutherin analogues were selected based on similarity in databases (ZINK and eMolecules) to verify the impact on structural change. Results and Discussion: The extract and its fractions were not active against the promastigote form (IC50 > 200 μg/mL), while isoeleutherin was active (IC50 = 25 μg/mL). All analogues have high intestinal absorption (HIA), cell permeability was moderate in Caco2 and low to moderate in MDCK. Structural changes interfered with plasma protein binding and blood-brain barrier permeability. Regarding metabolism, all molecules appear to be CYP3A4 metabolized and inhibited 2-3 CYPs. Molecular docking and molecular dynamics assessed the interactions between the most stable configurations of isoeleutherin, analogue compound 17, and quinacrine (control drug). Molecular dynamics simulations demonstrated stability and favorable interactions with TR. In summary, fractionation contributed to antileishmanial activity and isoleutherin seems to be promising. Structural alterations did not contribute to improve pharmacokinetic aspects and analogue 17 proved to be more promising than isoeleutherin, presenting better stabilization in TR.
Collapse
Affiliation(s)
| | | | | | | | - Ana Paula Lima da Costa
- Laboratory of Molecular Modeling, Institute of Exact and Natural Sciences, Federal University of Pará, Belém, PA, Brazil
| | | | | | - Sandro Percario
- Biotechnology and Biodiversity Postgraduate Program (BIONORTE), Federal University of Pará, Belém, PA, Brazil
| | - Fábio Alberto de Molfetta
- Laboratory of Molecular Modeling, Institute of Exact and Natural Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Maria Fâni Dolabela
- Biotechnology and Biodiversity Postgraduate Program (BIONORTE), Federal University of Pará, Belém, PA, Brazil
- Pharmaceutical Innovation Postgraduate Program, Federal University of Pará, Belém, PA, Brazil
- Faculty of Pharmacy, Federal University of Pará, Belém, PA, Brazil
- Pharmaceutical Sciences Postgraduate Program, Federal University of Pará, Belém, PA, Brazil
| |
Collapse
|
2
|
Gomes ARQ, Cruz JN, Castro ALG, Cordovil Brigido HP, Varela ELP, Vale VV, Carneiro LA, Ferreira GG, Percario S, Dolabela MF. Participation of Oxidative Stress in the Activity of Compounds Isolated from Eleutherine plicata Herb. Molecules 2023; 28:5557. [PMID: 37513429 PMCID: PMC10385196 DOI: 10.3390/molecules28145557] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/28/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
From Eleutherine plicata, naphthoquinones, isoeleutherine, and eleutherol were isolated, and previous studies have reported the antioxidant activity of these metabolites. The present work evaluated the role of oxidative changes in mice infected with Plasmodium berghei and treated with E. plicata extract, fraction, and isolated compounds, as well as to verify possible oxidative changes induced by these treatments. E. plicata extracts were prepared from powder from the bulbs, which were submitted to maceration with ethanol, yielding the extract (EEEp), which was fractionated under reflux, and the dichloromethane fraction (FDMEp) was submitted for further fractionation, leading to the isolation of isoeleutherine, eleutherine, and eleutherol. The antimalarial activity was examined using the suppressive test, evaluating the following parameters of oxidative stress: trolox equivalent antioxidant capacity (TEAC), thiobarbituric acid reactive substances (TBARS), and reduced glutathione (GSH). Furthermore, the molecular docking of naphthoquinones, eleutherol, eleutherine, and isoeleutherine interactions with antioxidant defense enzymes was investigated, which was favorable for the formation of the receptor-ligand complex, according to the re-rank score values. Eleutherine and isoeleutherine are the ones with the lowest binding energy for catalase (CAT), glutathione reductase (GR), and glutathione peroxidase (GPx1), showing themselves as possible targets of these molecules in the involvement of redox balance. Data from the present study showed that treatments with E. plicata stimulated an increase in antioxidant capacity and a reduction in oxidative stress in mice infected with P. berghei, with naphthoquinones being responsible for reducing oxidative changes and disease severity.
Collapse
Affiliation(s)
- Antônio Rafael Quadros Gomes
- Postgraduate Program in Pharmaceutical Innovation, Institute of Health Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
- Oxidative Stress Research Lab, Institute of Biological Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
| | - Jorddy Neves Cruz
- Postgraduate Program in Pharmaceutical Sciences, Institute of Health Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
| | - Ana Laura Gadelha Castro
- Postgraduate Program in Pharmaceutical Innovation, Institute of Health Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
| | - Heliton Patrick Cordovil Brigido
- Postgraduate Program in Pharmaceutical Innovation, Institute of Health Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
| | - Everton Luiz Pompeu Varela
- Oxidative Stress Research Lab, Institute of Biological Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
- Postgraduate Program in Biodiversity and Biotechnology of the BIONORTE Network, Federal University of Para, Belem 66075-110, PA, Brazil
| | - Valdicley Vieira Vale
- Postgraduate Program in Pharmaceutical Innovation, Institute of Health Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
| | | | - Gleison Gonçalves Ferreira
- Postgraduate Program in Pharmaceutical Sciences, Institute of Health Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
| | - Sandro Percario
- Oxidative Stress Research Lab, Institute of Biological Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
- Postgraduate Program in Biodiversity and Biotechnology of the BIONORTE Network, Federal University of Para, Belem 66075-110, PA, Brazil
| | - Maria Fâni Dolabela
- Postgraduate Program in Pharmaceutical Innovation, Institute of Health Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
- Postgraduate Program in Pharmaceutical Sciences, Institute of Health Sciences, Federal University of Para, Belem 66075-110, PA, Brazil
- Postgraduate Program in Biodiversity and Biotechnology of the BIONORTE Network, Federal University of Para, Belem 66075-110, PA, Brazil
| |
Collapse
|
3
|
In Vitro Cytotoxic Effects and Mechanisms of Action of Eleutherine Isolated from Eleutherine plicata Bulb in Rat Glioma C6 Cells. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248850. [PMID: 36557983 PMCID: PMC9785660 DOI: 10.3390/molecules27248850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/26/2022] [Accepted: 12/05/2022] [Indexed: 12/15/2022]
Abstract
Gliomas are the most common primary malignant brain tumors in adults, and have a poor prognosis, despite the different types of treatment available. There is growing demand for new therapies to treat this life-threatening tumor. Quinone derivatives from plants have received increased interest as potential anti-glioma drugs, due to their diverse pharmacologic activities, such as inhibiting cell growth, inflammation, tumor invasion, and promoting tumor regression. Previous studies have demonstrated the anti-glioma activity of Eleutherine plicata, which is related to three main naphthoquinone compounds-eleutherine, isoeleutherine, and eleutherol-but their mechanism of action remains elusive. Thus, the aim of this study was to investigate the mechanism of action of eleutherine on rat C6 glioma. In vitro cytotoxicity was evaluated by MTT assay; morphological changes were evaluated by phase-contrast microscopy. Apoptosis was determined by annexin V-FITC-propidium iodide staining, and antiproliferative effects were assessed by wound migration and colony formation assays. Protein kinase B (AKT/pAKT) expression was measured by western blot, and telomerase reverse transcriptase mRNA was measured by quantitative real-time polymerase chain reaction (qRT-PCR). Eleutherine reduced C6 cell proliferation in a dose-dependent manner, suppressed migration and invasion, induced apoptosis, and reduced AKT phosphorylation and telomerase expression. In summary, our results suggest that eleutherine has potential clinical use in treating glioma.
Collapse
|
4
|
Gomes ARQ, Cunha N, Varela ELP, Brígido HPC, Vale VV, Dolabela MF, de Carvalho EP, Percário S. Oxidative Stress in Malaria: Potential Benefits of Antioxidant Therapy. Int J Mol Sci 2022; 23:ijms23115949. [PMID: 35682626 PMCID: PMC9180384 DOI: 10.3390/ijms23115949] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 01/07/2023] Open
Abstract
Malaria is an infectious disease and a serious public health problem in the world, with 3.3 billion people in endemic areas in 100 countries and about 200 million new cases each year, resulting in almost 1 million deaths in 2018. Although studies look for strategies to eradicate malaria, it is necessary to know more about its pathophysiology to understand the underlying mechanisms involved, particularly the redox balance, to guarantee success in combating this disease. In this review, we addressed the involvement of oxidative stress in malaria and the potential benefits of antioxidant supplementation as an adjuvant antimalarial therapy.
Collapse
Affiliation(s)
- Antonio Rafael Quadros Gomes
- Post-Graduate Program in Pharmaceutica Innovation, Institute of Health Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (A.R.Q.G.); (H.P.C.B.); (V.V.V.); (M.F.D.)
- Oxidative Stress Research Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (N.C.); (E.L.P.V.); (E.P.d.C.)
| | - Natasha Cunha
- Oxidative Stress Research Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (N.C.); (E.L.P.V.); (E.P.d.C.)
| | - Everton Luiz Pompeu Varela
- Oxidative Stress Research Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (N.C.); (E.L.P.V.); (E.P.d.C.)
- Post-graduate Program in Biodiversity and Biotechnology (BIONORTE), Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Heliton Patrick Cordovil Brígido
- Post-Graduate Program in Pharmaceutica Innovation, Institute of Health Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (A.R.Q.G.); (H.P.C.B.); (V.V.V.); (M.F.D.)
| | - Valdicley Vieira Vale
- Post-Graduate Program in Pharmaceutica Innovation, Institute of Health Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (A.R.Q.G.); (H.P.C.B.); (V.V.V.); (M.F.D.)
| | - Maria Fâni Dolabela
- Post-Graduate Program in Pharmaceutica Innovation, Institute of Health Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (A.R.Q.G.); (H.P.C.B.); (V.V.V.); (M.F.D.)
- Post-graduate Program in Biodiversity and Biotechnology (BIONORTE), Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Eliete Pereira de Carvalho
- Oxidative Stress Research Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (N.C.); (E.L.P.V.); (E.P.d.C.)
- Post-graduate Program in Biodiversity and Biotechnology (BIONORTE), Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Sandro Percário
- Oxidative Stress Research Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil; (N.C.); (E.L.P.V.); (E.P.d.C.)
- Post-graduate Program in Biodiversity and Biotechnology (BIONORTE), Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
- Correspondence:
| |
Collapse
|