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Cuevas B, Arroba AI, de Los Reyes C, Zubía E. Rugulopteryx-Derived Spatane, Secospatane, Prenylcubebane and Prenylkelsoane Diterpenoids as Inhibitors of Nitric Oxide Production. Mar Drugs 2023; 21:md21040252. [PMID: 37103391 PMCID: PMC10142882 DOI: 10.3390/md21040252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/16/2023] [Accepted: 04/17/2023] [Indexed: 04/28/2023] Open
Abstract
This study aimed to evaluate the anti-inflammatory potential of the different classes of diterpenoids produced by algae of the genus Rugulopteryx. First, sixteen diterpenoids (1-16), including spatane, secospatane, prenylcubebane, and prenylkelsoane metabolites, were isolated from the extract of the alga Rugulopteryx okamurae collected at the southwestern Spanish coasts. Eight of the isolated diterpenoids are new compounds whose structures were determined by spectroscopic means: the spatanes okaspatols A-D (1-4); the secospatane rugukamural D (8); the prenylcubebanes okacubols A (13) and B (14); and okamurol A (16), which exhibits an unusual diterpenoid skeleton featuring a kelsoane-type tricyclic nucleus. Second, anti-inflammatory assays were performed on microglial cells Bv.2 and macrophage cells RAW 264.7. Compounds 1, 3, 6, 12, and 16 caused significant inhibition of the NO overproduction induced by LPS in Bv.2 cells, and compounds 3, 5, 12, 14, and 16 significantly decreased levels of NO in LPS-stimulated RAW 264.7 cells. The most active compound was okaspatol C (3), which completely suppressed the effects of LPS stimulation, both in Bv.2 and in RAW 264.7 cells.
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Affiliation(s)
- Belén Cuevas
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510 Puerto Real (Cádiz), Spain
- Unidad de Investigación, Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Avda. Ana de Viya 21, 11009 Cádiz, Spain
| | - Ana I Arroba
- Unidad de Investigación, Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Avda. Ana de Viya 21, 11009 Cádiz, Spain
- Departamento de Biomedicina, Biotecnología y Salud Pública, Facultad de Medicina, Universidad de Cádiz, Pl. Falla, 9, 11003 Cádiz, Spain
| | - Carolina de Los Reyes
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510 Puerto Real (Cádiz), Spain
| | - Eva Zubía
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510 Puerto Real (Cádiz), Spain
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Ezzanad A, Gómez-Oliva R, Escobar-Montaño F, Díez-Salguero M, Geribaldi-Doldan N, Dominguez-Garcia S, Botubol-Ares JM, de Los Reyes C, Durán-Patrón R, Nunez-Abades P, Macías-Sánchez AJ, Castro C, Hernández-Galán R. Correction to "Phorbol Diesters and 12-Deoxy-16-hydroxyphorbol 13,16-Diesters Induce TGFα Release and Adult Mouse Neurogenesis". J Med Chem 2022; 65:10707-10708. [PMID: 35895998 DOI: 10.1021/acs.jmedchem.2c01090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ezzanad A, Gómez-Oliva R, Escobar-Montaño F, Díez-Salguero M, Geribaldi-Doldan N, Dominguez-Garcia S, Botubol-Ares JM, Reyes CDL, Durán-Patrón R, Nunez-Abades P, Macías-Sánchez AJ, Castro C, Hernández-Galán R. Phorbol Diesters and 12-Deoxy-16-hydroxyphorbol 13,16-Diesters Induce TGFα Release and Adult Mouse Neurogenesis. J Med Chem 2021; 64:6070-6084. [PMID: 33945688 DOI: 10.1021/acs.jmedchem.1c00156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A small library of phorbol 12,13-diesters bearing low lipophilicity ester chains was prepared as potential neurogenic agents in the adult brain. They were also used in a targeted UHPLC-HRMS screening of the latex of Euphorbia resinifera. Two new 12-deoxy-16-hydroxyphorbol 13,16-diesters were isolated, and their structures were deduced using two-dimensional NMR spectroscopy and NOE experiments. The ability of natural and synthetic compounds to stimulate transforming growth factor alpha (TFGα) release, to increase neural progenitor cell proliferation, and to stimulate neurogenesis was evaluated. All compounds that facilitated TGFα release promoted neural progenitor cell proliferation. The presence of two acyloxy moieties on the tigliane skeleton led to higher levels of activity, which decreased when a free hydroxyl group was at C-12. Remarkably, the compound bearing isobutyryloxy groups was the most potent on the TGFα assay and at inducing neural progenitor cell proliferation in vitro, also leading to enhanced neurogenesis in vivo when administered intranasally to mice.
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Affiliation(s)
- Abdellah Ezzanad
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Ricardo Gómez-Oliva
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, 11002 Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain
| | - Felipe Escobar-Montaño
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Mónica Díez-Salguero
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, 11002 Cádiz, Spain
| | | | - Samuel Dominguez-Garcia
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, 11002 Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain
| | - José Manuel Botubol-Ares
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain
| | - Carolina de Los Reyes
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Rosa Durán-Patrón
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain
| | - Pedro Nunez-Abades
- Departamento de Fisiología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Antonio J Macías-Sánchez
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain.,Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Carmen Castro
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, 11002 Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain
| | - Rosario Hernández-Galán
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain.,Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
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Rodríguez-Luna A, Talero E, Terencio MDC, González-Rodríguez ML, Rabasco AM, de Los Reyes C, Motilva V, Ávila-Román J. Topical Application of Glycolipids from Isochrysis galbana Prevents Epidermal Hyperplasia in Mice. Mar Drugs 2017; 16:E2. [PMID: 29295585 PMCID: PMC5793050 DOI: 10.3390/md16010002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 12/18/2022] Open
Abstract
Chronic inflammatory skin diseases such as psoriasis have a significant impact on society. Currently, the major topical treatments have many side effects, making their continued use in patients difficult. Microalgae have emerged as a source of bio-active molecules such as glycolipids with potent anti-inflammatory properties. We aimed to investigate the effects of a glycolipid (MGMG-A) and a glycolipid fraction (MGDG) obtained from the microalga Isochrysis galbana on a TPA-induced epidermal hyperplasia murine model. In a first set of experiments, we examined the preventive effects of MGMG-A and MGDG dissolved in acetone on TPA-induced hyperplasia model in mice. In a second step, we performed an in vivo permeability study by using rhodamine-containing cream, ointment, or gel to determinate the formulation that preserves the skin architecture and reaches deeper. The selected formulation was assayed to ensure the stability and enhanced permeation properties of the samples in an ex vivo experiment. Finally, MGDG-containing cream was assessed in the hyperplasia murine model. The results showed that pre-treatment with acetone-dissolved glycolipids reduced skin edema, epidermal thickness, and pro-inflammatory cytokine production (TNF-α, IL-1β, IL-6, IL-17) in epidermal tissue. The in vivo and ex vivo permeation studies showed that the cream formulation had the best permeability profile. In the same way, MGDG-cream formulation showed better permeation than acetone-dissolved preparation. MGDG-cream application attenuated TPA-induced skin edema, improved histopathological features, and showed a reduction of the inflammatory cell infiltrate. In addition, this formulation inhibited epidermal expression of COX-2 in a similar way to dexamethasone. Our results suggest that an MGDG-containing cream could be an emerging therapeutic strategy for the treatment of inflammatory skin pathologies such as psoriasis.
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Affiliation(s)
- Azahara Rodríguez-Luna
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Sevilla, Spain.
| | - Elena Talero
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Sevilla, Spain.
| | - María Del Carmen Terencio
- Department of Pharmacology, Faculty of Pharmacy, University of Valencia, 46010 Valencia, Spain.
- Institute of Molecular Recognition and Technological Development (IDM), 46100 Valencia, Spain.
| | | | - Antonio M Rabasco
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Sevilla, Spain.
| | - Carolina de Los Reyes
- Department of Organic Chemistry, Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain.
| | - Virginia Motilva
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Sevilla, Spain.
| | - Javier Ávila-Román
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Sevilla, Spain.
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Ávila-Román J, Talero E, de Los Reyes C, García-Mauriño S, Motilva V. Microalgae-derived oxylipins decrease inflammatory mediators by regulating the subcellular location of NFκB and PPAR-γ. Pharmacol Res 2017; 128:220-230. [PMID: 29129670 DOI: 10.1016/j.phrs.2017.10.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 10/11/2017] [Accepted: 10/17/2017] [Indexed: 12/22/2022]
Abstract
Oxylipins (OXLs) are bioactive molecules generated by the oxidation of fatty acids that promote the resolution of acute inflammation and prevent chronic inflammatory processes through molecular mechanisms that are not well known. We have previously reported the anti-inflammatory activity of microalgae-derived OXLs and OXL-containing biomass in two inflammatory bowel disease (IBD) models: 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced acute colitis and TNBS-induced recurrent colitis. In this study, we examined the in vitro anti-inflammatory mechanism of action of the most abundant OXLs isolated from Chlamydomonas debaryana (13S-HOTE and 13S-HODE) and Nannochloropsis gaditana (15S-HEPE). These OXLs decreased IL-1β and IL-6 pro-inflammatory cytokines production as well as iNOS and COX-2 expression levels in THP-1 macrophages. In addition, OXLs decreased IL-8 production in HT-29 colon cells, the major chemokine produced by these cells. The interaction of OXLs with NFκB and PPAR-γ signaling pathways was studied by confocal microscopy. In THP-1 macrophages and HT-29 colon cells, stimulated by LPS and TNFα respectively, a pre-treatment with 13S-HOTE, 13S-HODE and 15S-HEPE (100μM) resulted in a lower nuclear presence of NFκB in both cell lines. The study of the subcellular localization of PPAR-γ showed that the treatment of THP-1 and HT-29 cells with these OXLs caused the migration of PPAR-γ into the nucleus. Colocalization analysis of both transcription factors in LPS-stimulated THP-1 macrophages showed that the pre-treatment with 13S-HOTE, 13S-HODE or 15S-HEPE lowered nuclear colocalization similar to control value, and increased cytosolic localization above control level. These results indicate that these OXLs could act as agonist of PPAR-γ and consequently inhibit NFκB signaling pathway activation, thus lowering the production of inflammatory markers, highlighting the therapeutic potential of these OXLs in inflammatory diseases such as IBD.
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Affiliation(s)
- Javier Ávila-Román
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, Seville, 41012, Spain.
| | - Elena Talero
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, Seville, 41012, Spain
| | - Carolina de Los Reyes
- Department of Organic Chemistry, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, 11510, Spain
| | - Sofía García-Mauriño
- Department of Plant Biology and Ecology, Faculty of Biology, Universidad de Sevilla, Seville, 41012, Spain
| | - Virginia Motilva
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, Seville, 41012, Spain
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Ávila-Román J, Talero E, de Los Reyes C, Zubía E, Motilva V, García-Mauriño S. Cytotoxic Activity of Microalgal-derived Oxylipins against Human Cancer Cell lines and their Impact on ATP Levels. Nat Prod Commun 2016; 11:1871-1875. [PMID: 30508355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
Oxylipins are metabolites derived from lipid peroxidation. The plant oxylipin methyl jasmonate (MJ) shows cytotoxic activity against cancer cell lines of various origins, with ATP-depletion being one of the mechanisms responsible for this effect. The cytotoxic activity of oxylipins (OXLs) isolated from the microalgae Chlamydomonas debaryana (13-HOTE) and Nannochloropsis gaditana (15-HEPE) was higher against UACC-62 (melanoma) than towards HT-29 (colon adenocarcinoma) cells. OXLs lowered the ATP levels of HT-29 and UACC-62 cells, but the effect was higher on the second cell line, which had higher basal ATP. This result proves a link between the cytotoxicity and the capability of these compounds to deplete ATP. In addition, the combination of 13-HOTE with the anticancer drug 5-fluorouracil (5-FU) induced a synergistic toxicity against HT-29 cells. These results highlight the therapeutic potential of oxylipins derived from microalgae.
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de Los Reyes C, Ortega MJ, Rodríguez-Luna A, Talero E, Motilva V, Zubía E. Molecular Characterization and Anti-inflammatory Activity of Galactosylglycerides and Galactosylceramides from the Microalga Isochrysis galbana. J Agric Food Chem 2016; 64:8783-8794. [PMID: 27786470 DOI: 10.1021/acs.jafc.6b03931] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Isochrysis galbana is a marine microalga rich in PUFAs that is widely used as feed in aquaculture and more recently investigated for its potential in food applications and as source of bioactive compounds. In this study, the biomass obtained from cultures of I. galbana has been investigated to determine its content in glycosylglycerides and glycosylceramides. By using NMR, UPLC-MS/MS, and fatty acid profiles, the structures of ten monogalactosyldiacylglycerols (MGDGs 1-10) and nine digalactosyldiacylglycerols (DGDGs 11-19) have been established. Two distinctive features of the galactosylglycerides from I. galbana are the wide presence of highly unsaturated acyl chains derived from stearidonic acid (18:4Δ6Z,9Z,12Z,15Z) and octadecapentaenoic acid (18:5Δ3Z,6Z,9Z,12Z,15Z), as well as the unusual coexistence of αβ-DGDGs and ββ-DGDGs. Three new galactosylceramides, isogalbamides A-C (20-22), have also been isolated and characterized by NMR and MS/MS. These metabolites, which are the first galactosylceramides described from microalgae, derive from unprecedented tetraolefinic sphingoid bases. In anti-inflammatory assays, the MGDG and DGDG mixtures and the isolated DGDGs 11 and 12 showed significant activity as inhibitors of the production of the pro-inflammatory cytokine TNF-α in lipopolysaccharide-stimulated human THP-1 macrophages, while the galactosylceramides showed moderated activity.
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Affiliation(s)
- Carolina de Los Reyes
- Departamento de Quı́mica Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz , 11510 Puerto Real (Cádiz), Spain
| | - María J Ortega
- Departamento de Quı́mica Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz , 11510 Puerto Real (Cádiz), Spain
| | - Azahara Rodríguez-Luna
- Departamento de Farmacologı́a, Facultad de Farmacia, Universidad de Sevilla , 41012 Sevilla, Spain
| | - Elena Talero
- Departamento de Farmacologı́a, Facultad de Farmacia, Universidad de Sevilla , 41012 Sevilla, Spain
| | - Virginia Motilva
- Departamento de Farmacologı́a, Facultad de Farmacia, Universidad de Sevilla , 41012 Sevilla, Spain
| | - Eva Zubía
- Departamento de Quı́mica Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz , 11510 Puerto Real (Cádiz), Spain
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Zbakh H, Talero E, Avila J, Alcaide A, de Los Reyes C, Zubía E, Motilva V. The Algal Meroterpene 11-Hydroxy-1'-O-Methylamentadione Ameloriates Dextran Sulfate Sodium-Induced Colitis in Mice. Mar Drugs 2016; 14:E149. [PMID: 27527191 PMCID: PMC4999910 DOI: 10.3390/md14080149] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/28/2016] [Accepted: 08/01/2016] [Indexed: 12/14/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a complex class of immune disorders. Unfortunately, a treatment for total remission has not yet been found, while the use of natural product-based therapies has emerged as a promising intervention. The present study was aimed to investigate the anti-inflammatory effects of the algal meroterpene 11-hydroxy-1'-O-methylamentadione (AMT-E) in a murine model of dextran sodium sulphate (DSS)-induced colitis. AMT-E was orally administered daily (1, 10, and 20 mg/kg animal) to DSS treated mice (3% w/v) for 7 days. AMT-E prevented body weight loss and colon shortening and effectively attenuated the extent of the colonic damage. Similarly, AMT-E increased mucus production and reduced myeloperoxidase activity (marker for anti-inflammatory activity). Moreover, the algal meroterpene decreased the tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-10 levels, and caused a significant reduction of the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Our results demonstrate the protective effects of AMT-E on experimental colitis, provide an insight of the underlying mechanisms of this compound, and suggest that this class of marine natural products might be an interesting candidate for further studies on the prevention/treatment of IBD.
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Affiliation(s)
- Hanaa Zbakh
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
- Department of Biology, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan 93030, Morocco.
| | - Elena Talero
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Javier Avila
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Antonio Alcaide
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Carolina de Los Reyes
- Department of Organic Chemistry, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real (Cádiz) 11510, Spain.
| | - Eva Zubía
- Department of Organic Chemistry, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real (Cádiz) 11510, Spain.
| | - Virginia Motilva
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
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de Los Reyes C, Ávila-Román J, Ortega MJ, de la Jara A, García-Mauriño S, Motilva V, Zubía E. Oxylipins from the microalgae Chlamydomonas debaryana and Nannochloropsis gaditana and their activity as TNF-α inhibitors. Phytochemistry 2014; 102:152-161. [PMID: 24703579 DOI: 10.1016/j.phytochem.2014.03.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 03/07/2014] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
The chemical study of the microalgae Chlamydomonas debaryana and Nannochloropsis gaditana has led to the isolation of oxylipins. The samples of C. debaryana have yielded the compounds (4Z,7Z,9E,11S,13Z)-11-hydroxyhexadeca-4,7,9,13-tetraenoic acid (1), (4Z,7E,9E,13Z)-11-hydroxyhexadeca-4,7,9,13-tetraenoic acid (2), (4Z,6E,10Z,13Z)-8-hydroxyhexadeca-4,6,10,13-tetraenoic acid (3), (4Z,8E,10Z,13Z)-7-hydroxyhexadeca-4,8,10,13-tetraenoic acid (4), and (5E,7Z,10Z,13Z)-4-hydroxyhexadeca-5,7,10,13-tetraenoic acid (5), which are derived from the fatty acid 16:4Δ(4,7,10,13) together with the compound (5Z,9Z,11E,15Z)-13-hydroxyoctadeca-5,9,11,15-tetraenoic acid (7) derived from coniferonic acid (18:4Δ(5,9,12,15)). In addition, the known polyunsaturated hydroxy acids 11-HHT (6), (5Z,9Z,11E)-13-hydroxyoctadeca-5,9,11-trienoic acid (8), (13S)-HOTE (9), (9E,11E,15Z)-13-hydroxyoctadeca-9,11,15-trienoic acid (10), 9-HOTE (11), 12-HOTE (12), 16-HOTE (13) and (13S)-HODE (14) have also been obtained. The chemical study of N. gaditana has led to the isolation of the hydroxy acid (15S)-HEPE (15) derived from EPA (20:5Δ(5,8,11,14,17)). The structures of the isolated compounds were established by spectroscopic means. The optical activity displayed by oxylipins 1, 2, 6, 7, 9, 10, 14, and 15 suggests the occurrence of LOX-mediated pathways in C. debaryana and N. gaditana. In anti-inflammatory assays, all the tested compounds inhibited the TNF-α production in LPS-stimulated THP-1 macrophages. The most active oxylipin was the C-16 hydroxy acid 1, which at 25μM caused a 60% decrease of the TNF-α level.
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Affiliation(s)
- Carolina de Los Reyes
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
| | - Javier Ávila-Román
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain
| | - María J Ortega
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
| | - Adelina de la Jara
- Instituto Tecnológico de Canarias, Playa de Pozo Izquierdo, 35119 Santa Lucía-Gran Canaria, Spain
| | - Sofía García-Mauriño
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Virginia Motilva
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Eva Zubía
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain.
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de Los Reyes C, Zbakh H, Motilva V, Zubía E. Antioxidant and anti-inflammatory meroterpenoids from the brown alga Cystoseira usneoides. J Nat Prod 2013; 76:621-9. [PMID: 23458950 DOI: 10.1021/np300833y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A chemical study of the alga Cystoseira usneoides has led to the isolation of six new meroterpenoids, cystodiones A-F (1-6), together with six known related compounds (7-12). The structures of the new metabolites have been established by spectroscopic techniques. In antioxidant assays all of the tested meroterpenes, and in particular cystodiones A (1) and B (2), 6-cis-amentadione-1'-methyl ether (7), and amentadione-1'-methyl ether (8), exhibited strong radical-scavenging activity. In anti-inflammatory assays, usneoidone Z (11) and its corresponding 6E isomer (12) showed significant activity as inhibitors of the production of the proinflammatory cytokine TNF-α in LPS-stimulated THP-1 human macrophages.
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Affiliation(s)
- Carolina de Los Reyes
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510 Puerto Real (Cádiz), Spain
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