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Osterne VJS, Oliveira MV, De Schutter K, Serna S, Reichardt NC, Smagghe G, Cavada BS, Van Damme EJM, Nascimento KS. A galactoside-specific Dalbergieae legume lectin from seeds of Vataireopsis araroba (Aguiar) Ducke. Glycoconj J 2023; 40:85-95. [PMID: 36287345 DOI: 10.1007/s10719-022-10082-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/09/2022] [Accepted: 09/16/2022] [Indexed: 11/24/2022]
Abstract
The Dalbergieae lectin group encompasses several lectins with significant differences in their carbohydrate specificities and biological properties. The current work reports on the purification and characterization of a GalNAc/Gal-specific lectin from Vataireopsis araroba (Aguiar) Ducke, designated as VaL. The lectin was purified from the seeds in a single step using guar gum affinity chromatography. The lectin migrated as a single band of about 35 kDa on SDS-PAGE and, in native conditions, occurs as a homodimer. The purified lectin is stable at temperatures up to 60 °C and in a pH range from 7 to 8 and requires divalent cations for its activity. Sugar-inhibition assays demonstrate the lectin specificity towards N-acetyl-D-galactosamine, D-galactose and related sugars. Furthermore, glycan array analyses show that VaL interacts preferentially with glycans containing terminal GalNAc/Galβ1-4GlcNAc. Biological activity assays were performed using three insect cell lines: CF1 midgut cells from the spruce budworm Choristoneura fumiferana, S2 embryo cells from the fruit fly Drosophila melanogaster, and GutAW midgut cells from the corn earworm Helicoverpa zea. In vitro assays indicated a biostatic effect for VaL on CF1 cells, but not on S2 and GutAW cells. The lectin presented a biostatic effect by reducing the cell growth and inducing cell agglutination, suggesting an interaction with glycans on the cell surface. VaL has been characterized as a galactoside-specific lectin of the Dalbergieae tribe, with sequence similarity to lectins from Vatairea and Arachis.
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Affiliation(s)
- Vinicius J S Osterne
- Laboratory for Biochemistry and Glycobiology, Department of Biotechnology, Ghent University, 9000, Ghent, Belgium
| | - Messias V Oliveira
- Laboratory of Biologically Active Molecules, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60455-760, Fortaleza, Brazil
| | - Kristof De Schutter
- Laboratory of Agrozoology, Department of Plants and Crops, Ghent University, 9000, Ghent, Belgium
| | - Sonia Serna
- Glycotechnology Laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo Miramon 182, 20014, San Sebastian, Spain
| | - Niels-Christian Reichardt
- Glycotechnology Laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo Miramon 182, 20014, San Sebastian, Spain
- CIBER-BBN, 20009, San Sebastian, Spain
| | - Guy Smagghe
- Laboratory of Agrozoology, Department of Plants and Crops, Ghent University, 9000, Ghent, Belgium
| | - Benildo S Cavada
- Laboratory of Biologically Active Molecules, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60455-760, Fortaleza, Brazil
| | - Els J M Van Damme
- Laboratory for Biochemistry and Glycobiology, Department of Biotechnology, Ghent University, 9000, Ghent, Belgium.
| | - Kyria Santiago Nascimento
- Laboratory of Biologically Active Molecules, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60455-760, Fortaleza, Brazil.
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Çiçek SS, Galarza Pérez M, Wenzel-Storjohann A, Bezerra RM, Segovia JFO, Girreser U, Kanzaki I, Tasdemir D. Antimicrobial Prenylated Isoflavones from the Leaves of the Amazonian Medicinal Plant Vatairea guianensis Aubl. JOURNAL OF NATURAL PRODUCTS 2022; 85:927-935. [PMID: 35271771 DOI: 10.1021/acs.jnatprod.1c01035] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Vatairea guianenis Aubl. (Fabaceae) is an Amazonian medicinal plant species traditionally used for treating skin diseases. In an initial screening, a V. guianensis leaf extract and its subextracts showed antibacterial and antifungal activities. The EtOAc subextract was selected for chemical workup and afforded five known (1-4 and 8) and six undescribed isoflavones, vatairenones C-H (5-7 and 9-11). All isoflavones are prenylated in position C-8, displaying either chain-prenylated (1-7) or ring-closed forms (8-11). The most bioactive compound (3) exhibited in vitro activity against clinically relevant bacteria and fungi with IC50 values ranging from 6.8 to 26.9 μM. Due to its broad antimicrobial activity and low general toxicity, compound 3 is a potential lead compound for structural modifications. The results of the present study support the ethnomedicinal use of V. guianensis in the treatment of dermatological disorders. 1H NMR spectra of some of the isolated compounds showed intricate signal patterns, which might explain repeated errors in assigning the correct structure of the isoflavonoid B-ring in the literature and which we resolved by higher order spectra simulations.
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Affiliation(s)
- Serhat S Çiçek
- Department of Pharmaceutical Biology, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany
| | - Mayra Galarza Pérez
- Department of Pharmaceutical Biology, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany
| | - Arlette Wenzel-Storjohann
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany
| | - Roberto M Bezerra
- Laboratory of Bioprospection and Atomic Absorption, Federal University of Amapá, Rod. JK, Macapá, 68903-419 Amapá, Brazil
| | - Jorge F O Segovia
- Brazilian Agricultural Research Corporation, Ecoregional Research Unit, Rod. JK, Km 5, Macapá, 68903-419 Amapá, Brazil
| | - Ulrich Girreser
- Department of Pharmaceutical and Medicinal Chemistry, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany
| | - Isamu Kanzaki
- Laboratory of Bioprospection, University of Brasilia, Darcy Ribeiro Campus, 70910-900 Brasilia, DF, Brazil
| | - Deniz Tasdemir
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany
- Kiel University, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
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