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Lee H, Jang H, Heo D, Eom JI, Han CH, Kim SM, Shin YS, Pan CH, Yang S. Tisochrysis lutea Fucoxanthin Suppresses NF-κB, JNK, and p38-Associated MMP Expression in Arthritis Pathogenesis via Antioxidant Activity. Antioxidants (Basel) 2024; 13:941. [PMID: 39199188 PMCID: PMC11351224 DOI: 10.3390/antiox13080941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/29/2024] [Accepted: 07/30/2024] [Indexed: 09/01/2024] Open
Abstract
Tisochrysis lutea is a highly nutritious marine microalga that has various applications in aquaculture and biotechnology. However, the effects of T. lutea extract (TLE) on osteoarthritis (OA) pathogenesis remain unexplored. In this study, we aimed to determine the effects of TLE on OA development. We found that TLE inhibits the expression of matrix metalloproteinases (MMPs) and reactive oxygen species (ROS) activity in an OA mouse model generated by the destabilization of the medial meniscus (DMM) surgery. In vivo assays of the OA model mice demonstrated that TLE has a protective effect against cartilage destruction by inhibiting MMP3 and MMP13 expression. To enable the medical use of TLE, the components of TLE were characterized using high-performance liquid chromatography (HPLC) analysis. Interestingly, we found that Fucoxanthin accounts for 41.2% of TLE and showed anti-catabolic and antioxidant effects under IL-1β-treated in vitro conditions. RNA sequencing analysis showed that fucoxanthin decreased p38, NF-κB, and JNK signaling pathway gene expression, all of which are activated by IL-1β. Furthermore, in vivo analysis showed that fucoxanthin inhibited the IL-1β-stimulated phosphorylation of p65, JNK, and p38. These results highlight new possibilities for the use of TLE as a source of fucoxanthin, an antioxidant, for OA treatment.
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Affiliation(s)
- Hyemi Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea; (H.L.); (H.J.); (D.H.)
| | - Hahyeong Jang
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea; (H.L.); (H.J.); (D.H.)
| | - Dahyoon Heo
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea; (H.L.); (H.J.); (D.H.)
| | - Jae-In Eom
- Microalgae Ask Us Co., Ltd., Gangneung 25441, Republic of Korea; (J.-I.E.); (C.-H.H.); (S.-M.K.); (Y.-S.S.)
| | - Cheol-Ho Han
- Microalgae Ask Us Co., Ltd., Gangneung 25441, Republic of Korea; (J.-I.E.); (C.-H.H.); (S.-M.K.); (Y.-S.S.)
| | - Se-Min Kim
- Microalgae Ask Us Co., Ltd., Gangneung 25441, Republic of Korea; (J.-I.E.); (C.-H.H.); (S.-M.K.); (Y.-S.S.)
| | - Yoo-Seob Shin
- Microalgae Ask Us Co., Ltd., Gangneung 25441, Republic of Korea; (J.-I.E.); (C.-H.H.); (S.-M.K.); (Y.-S.S.)
| | - Cheol-Ho Pan
- Microalgae Ask Us Co., Ltd., Gangneung 25441, Republic of Korea; (J.-I.E.); (C.-H.H.); (S.-M.K.); (Y.-S.S.)
| | - Siyoung Yang
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea; (H.L.); (H.J.); (D.H.)
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2
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Sun Y, Dong Y, Cui X, Guo X, Zhang J, Yu C, Zhang M, Wang H. Effects of Marine Natural Products on Liver Diseases. Mar Drugs 2024; 22:288. [PMID: 39057397 PMCID: PMC11278422 DOI: 10.3390/md22070288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 06/11/2024] [Accepted: 06/20/2024] [Indexed: 07/28/2024] Open
Abstract
The prevention and treatment of liver disease, a class of disease that seriously threatens human health, has always been a hot topic of medical research. In recent years, with the in-depth exploration of marine resources, marine natural products have shown great potential and value in the field of liver disease treatment. Compounds extracted and isolated from marine natural products have a variety of biological activities such as significant antiviral properties, showing potential in the management of alcoholic liver disease (ALD) and non-alcoholic fatty liver disease (NAFLD), protection of the liver from fibrosis, protection from liver injury and inhibition of the growth of hepatocellular carcinoma (HCC). This paper summarizes the progress of research on marine natural products for the treatment of liver diseases in the past decade, including the structural types of active substances from different natural products and the mechanisms underlying the modulation of different liver diseases and reviews their future prospects.
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Affiliation(s)
- Yandi Sun
- Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.S.); (Y.D.); (X.C.); (X.G.); (J.Z.); (C.Y.)
| | - Yansong Dong
- Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.S.); (Y.D.); (X.C.); (X.G.); (J.Z.); (C.Y.)
| | - Xiaohang Cui
- Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.S.); (Y.D.); (X.C.); (X.G.); (J.Z.); (C.Y.)
| | - Xiaohe Guo
- Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.S.); (Y.D.); (X.C.); (X.G.); (J.Z.); (C.Y.)
| | - Juan Zhang
- Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.S.); (Y.D.); (X.C.); (X.G.); (J.Z.); (C.Y.)
| | - Chong Yu
- Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.S.); (Y.D.); (X.C.); (X.G.); (J.Z.); (C.Y.)
| | - Man Zhang
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China;
| | - Haifeng Wang
- Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.S.); (Y.D.); (X.C.); (X.G.); (J.Z.); (C.Y.)
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning 530007, China
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Grabarczyk M, Duda-Madej A, Romanenko F, Maciejewska G, Mączka W, Białońska A, Wińska K. New Hydroxylactones and Chloro-Hydroxylactones Obtained by Biotransformation of Bicyclic Halolactones and Their Antibacterial Activity. Molecules 2024; 29:2820. [PMID: 38930886 PMCID: PMC11206757 DOI: 10.3390/molecules29122820] [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: 04/25/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
The aim of this study was to obtain new halolactones with a gem-dimethyl group in the cyclohexane ring (at the C-3 or C-5 carbon) and a methyl group in the lactone ring and then subject them to biotransformations using filamentous fungi. Halolactones in the form of mixtures of two diasteroisomers were subjected to screening biotransformations, which showed that only compounds with a gem-dimethyl group located at the C-5 carbon were transformed. Strains from the genus Fusarium carried out hydrolytic dehalogenation, while strains from the genus Absidia carried out hydroxylation of the C-7 carbon. Both substrates and biotransformation products were then tested for antimicrobial activity against multidrug-resistant strains of both bacteria and yeast-like fungi. The highest antifungal activity against C. dubliniensis and C. albicans strains was obtained for compound 5b, while antimicrobial activity against S. aureus MRSA was obtained for compound 4a.
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Affiliation(s)
- Małgorzata Grabarczyk
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland; (F.R.); (W.M.); (K.W.)
| | - Anna Duda-Madej
- Department of Microbiology, Faculty of Medicine, Wroclaw Medical University, Chałubińskiego 4, 50-368 Wrocław, Poland
| | - Fedor Romanenko
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland; (F.R.); (W.M.); (K.W.)
| | - Gabriela Maciejewska
- Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland;
| | - Wanda Mączka
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland; (F.R.); (W.M.); (K.W.)
| | - Agata Białońska
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland;
| | - Katarzyna Wińska
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland; (F.R.); (W.M.); (K.W.)
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Silva M, Avni D, Varela J, Barreira L. The Ocean's Pharmacy: Health Discoveries in Marine Algae. Molecules 2024; 29:1900. [PMID: 38675719 PMCID: PMC11055030 DOI: 10.3390/molecules29081900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
Non-communicable diseases (NCDs) represent a global health challenge, constituting a major cause of mortality and disease burden in the 21st century. Addressing the prevention and management of NCDs is crucial for improving global public health, emphasizing the need for comprehensive strategies, early interventions, and innovative therapeutic approaches to mitigate their far-reaching consequences. Marine organisms, mainly algae, produce diverse marine natural products with significant therapeutic potential. Harnessing the largely untapped potential of algae could revolutionize drug development and contribute to combating NCDs, marking a crucial step toward natural and targeted therapeutic approaches. This review examines bioactive extracts, compounds, and commercial products derived from macro- and microalgae, exploring their protective properties against oxidative stress, inflammation, cardiovascular, gastrointestinal, metabolic diseases, and cancer across in vitro, cell-based, in vivo, and clinical studies. Most research focuses on macroalgae, demonstrating antioxidant, anti-inflammatory, cardioprotective, gut health modulation, metabolic health promotion, and anti-cancer effects. Microalgae products also exhibit anti-inflammatory, cardioprotective, and anti-cancer properties. Although studies mainly investigated extracts and fractions, isolated compounds from algae have also been explored. Notably, polysaccharides, phlorotannins, carotenoids, and terpenes emerge as prominent compounds, collectively representing 42.4% of the investigated compounds.
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Affiliation(s)
- Mélanie Silva
- Centre of Marine Sciences, University of Algarve, 8005-139 Faro, Portugal; (M.S.); (J.V.)
| | - Dorit Avni
- MIGAL Galilee Institute, Kiryat Shmona 1106000, Israel;
| | - João Varela
- Centre of Marine Sciences, University of Algarve, 8005-139 Faro, Portugal; (M.S.); (J.V.)
- Green Colab—Associação Oceano Verde, University of Algarve, 8005-139 Faro, Portugal
| | - Luísa Barreira
- Centre of Marine Sciences, University of Algarve, 8005-139 Faro, Portugal; (M.S.); (J.V.)
- Green Colab—Associação Oceano Verde, University of Algarve, 8005-139 Faro, Portugal
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5
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Khaled M, Ouache R, Pale P, Harkat H. Phytochemical Profiles and Biological Activities of Frankenia Species: A Review. Molecules 2024; 29:980. [PMID: 38474492 DOI: 10.3390/molecules29050980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/12/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
The relatively small Frankeniaceae family is represented by halophyte plants, growing in arid and semi-arid climates in saline, alkaline or calcareous soils. Due to their living conditions, they usually produce a large diversity of compounds, which often exhibit bioactivities. Some species of this genus have long been used as traditional herbal medicines to treat dysentery, diarrhea, gonorrhea, vaginal leucorrhea, respiratory diseases and wounds. To date, several studies on either phytochemical or pharmacological aspects, or both, have revealed that this genus is a rich source of diverse and novel bioactive chemicals, including phenolics, flavonoids, alkaloids and fatty acids. This review describes all the reported chemical profiles of Frankenia species, as well as the corresponding biological properties, when available. The aim of this review is to show the potential of these plants for various applications, especially therapeutic ones.
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Affiliation(s)
- Meyada Khaled
- Department of Pharmacy, Faculty of Medicine, Batna 2 University, Batna 05000, Algeria
| | - Rachid Ouache
- Laboratory of Physio-Toxicology, Cellular and Molecular Pathology-Biomolecules (LPTPCMB), Batna 2 University, Batna 05000, Algeria
| | - Patrick Pale
- Laboratory of Organic Synthesis & Catalysis, Institute of Chemistry (UMR-CNRS 7177), University of Strasbourg, 67000 Strasbourg, France
| | - Hassina Harkat
- Department of Pharmacy, Faculty of Medicine, Batna 2 University, Batna 05000, Algeria
- Laboratory of Physio-Toxicology, Cellular and Molecular Pathology-Biomolecules (LPTPCMB), Batna 2 University, Batna 05000, Algeria
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Mazur M, Zych KM, Obmińska-Mrukowicz B, Pawlak A. Microbial Transformations of Halolactones and Evaluation of Their Antiproliferative Activity. Int J Mol Sci 2023; 24:ijms24087587. [PMID: 37108750 PMCID: PMC10144491 DOI: 10.3390/ijms24087587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
The microbial transformations of lactones with a halogenoethylocyclohexane moiety were performed in a filamentous fungi culture. The selected, effective biocatalyst for this process was the Absidia glauca AM177 strain. The lactones were transformed into the hydroxy derivative, regardless of the type of halogen atom in the substrate structure. For all lactones, the antiproliferative activity was determined toward several cancer cell lines. The antiproliferative potential of halolactones was much broader than that observed for the hydroxyderivative. According to the presented results, the most potent was chlorolactone, which exhibited significant activity toward the T-cell lymphoma line (CL-1) cell line. The hydroxyderivative obtained through biotransformation was not previously described in the literature.
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Affiliation(s)
- Marcelina Mazur
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - Karolina Maria Zych
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - Bożena Obmińska-Mrukowicz
- Department of Pharmacology and Toxicology, Wrocław University of Environmental and Life Sciences, C.K. Norwida 31, 50-375 Wrocław, Poland
| | - Aleksandra Pawlak
- Department of Pharmacology and Toxicology, Wrocław University of Environmental and Life Sciences, C.K. Norwida 31, 50-375 Wrocław, Poland
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7
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In Vitro Antiproliferative Activity and Phytochemicals Screening of Extracts of the Freshwater Microalgae, Chlorochromonas danica. Appl Biochem Biotechnol 2023; 195:534-555. [PMID: 36103038 DOI: 10.1007/s12010-022-04137-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2022] [Indexed: 01/13/2023]
Abstract
The present study was focused on the screening of phytochemicals, their quantitative estimation and analysis by LC-MS profile, and antiproliferative efficacy of the aqueous-ethanolic extracts of the microalgae, Chlorochromonas danica isolated from the freshwater body Tavanampalli. The aqueous-ethanol extract of Chlorochromonas danica showed the presence of flavonoids, phenols, and proteins. The total flavonoid content, total phenol content, and total protein content were determined to be 158.65 mg of quercetin equivalent, 15.75 mg of gallic acid equivalent, and 134.65 mg/g dry weight of the extract, respectively. The LC-MS analysis confirmed the presence of several major bioactive molecules including L-Histidine, D-glutamine, L-aspartic acid, adenine, adenosine, cotinine, guanine hypoxanthine, L-glutamic acid, nicotinamide, 4-Hydroxycoumarin, and Stearamide. The aqueous-ethanol extract of Chlorochromonas danica exhibited an IC50 values of 63.34 µg, 279.29 µg, 125.42 µg, 90.56 µg, and 95.58 µg against A375, A549, HeLa, HepG2, and HT29 cell lines respectively, compared to the positive control cisplatin with IC50 values of 3.56 µg, 4.65 µg, 3.88 µg, 4.87 µg, and 7.23 µg respectively. These data suggest that Chlorochromonas danica remains a promising drug candidate for the treatment of cancers, particularly melanoma (A375 cell line) that can be considered for purification of antiproliferative compound and further clinical trials for the discovery of novel antiproliferative drugs from cost-effective sources.
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Motinia N, Ghannadian M, Zolfaghari B, Yazdiniapour Z. Phytochemical Study of Euphorbia turcomanica Boiss. Metabolites 2022; 12:1200. [PMID: 36557238 PMCID: PMC9781534 DOI: 10.3390/metabo12121200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/22/2022] [Accepted: 11/26/2022] [Indexed: 12/03/2022] Open
Abstract
The attraction to the Euphorbia genus, with its remarkable diversity in species, is due to its variety of chemical compositions. Euphorbia turcomanica is one of the species of the spurge family growing wildly in Iran. This research aims to investigate the presence of secondary metabolites, specially terpenoid compounds, in terms of structural determination. Samples of E. tucomanica were finely powdered and macerated with acetone/dichloromethane 2:1. Repeated column chromatography using silica gel, MPLC, and HPLC methods followed by the analysis of data obtained from spectroscopic means was carried out to purify and identify the terpenoid constituents. The chemical structures of nine known terpenoids were determined for the first time from E. turcomanica during this study. Loliolide (1), a monoterpene, and eight steroids and triterpenes, including simiarenol (2), isomultiflorenol (3), cycloart-25-ene-3β,24-diol (4), β-sitosterol (5), cycloart-23-ene-3β,25-diol (6), 3α, 11α-dihydroxyurs-12-ene (7), 3β, 24β, 25-trihydroxycycloartane (8), and 7α-hydroxystigmasterol (9) were isolated and identified. E. tucomanica, with a rich terpenoid profile, can be one of the valuable and economic sources providing compounds for drug development.
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Affiliation(s)
| | | | | | - Zeinab Yazdiniapour
- Department of Pharmacognosy, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
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Fang X, Zhu Y, Zhang T, Li Q, Fan L, Li X, Jiang D, Lin J, Zou L, Ren J, Huang Z, Ye H, Liu Y. Fucoxanthin Inactivates the PI3K/Akt Signaling Pathway to Mediate Malignant Biological Behaviors of Non-Small Cell Lung Cancer. Nutr Cancer 2022; 74:3747-3760. [PMID: 35838029 DOI: 10.1080/01635581.2022.2091149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Although lung cancer treatment strategies have improved in recent years, the 5-year overall survival of non-small cell lung cancer (NSCLC) remains less than 15%. Chemotherapy is considered the most promising option in the comprehensive treatment of NSCLC. Fucoxanthin (FX) is a natural product derived from brown algae and has extensive applications in medicine. Previous studies reported that FX effectively inhibits the growth of NSCLC cells in vitro and in vivo. However, the mechanism underlying the anti-NSCLC effect of FX remains unknown. In this study, NSCLC cell lines and a xenograft nude mouse model were used to examine the anti-NSCLC activities of FX in vitro and in vivo. Network pharmacology analysis and inhibitors or activators of the PI3K/Akt signaling pathway were used to explore the anti-NSCLC mechanisms of FX. The results indicated that FX could inhibit proliferation, migration, and invasion, arrest cell cycle at the G0/G1 phase, and induce apoptosis of NSCLC cells in vitro. Additionally, FX suppressed tumor growth in vivo. The PI3K/Akt signaling pathway was found to be involved in the anti-NSCLC activity of FX. In conclusion, FX inhibits malignant biological behaviors of NSCLC by suppressing the phosphorylation of both PI3K and AKT, and subsequently inactivating PI3K/AKT signaling pathway.
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Affiliation(s)
- Xuehong Fang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Department of Pharmacology, Guangdong Medical University, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, China
| | - Yuzhen Zhu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Department of Pharmacology, Guangdong Medical University, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, China
| | - Taomin Zhang
- Department of Pharmacology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Qian Li
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Department of Pharmacology, Guangdong Medical University, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, China
| | - Lvhua Fan
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Department of Pharmacology, Guangdong Medical University, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, China
| | - Xiaodan Li
- People's Hospital of Longhua District, Shenzhen, Guangdong, China
| | - Daishun Jiang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Department of Pharmacology, Guangdong Medical University, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, China
| | - Jie Lin
- Department of Pharmacology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Liyi Zou
- Department of Pharmacology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Jianwei Ren
- Shenzhen Ritzcon Biological Technology Co., LTD, Shenzhen, Guangdong, China
| | - Zunnan Huang
- Department of Pharmacology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Hua Ye
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Department of Pharmacology, Guangdong Medical University, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, China
| | - Yi Liu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Department of Pharmacology, Guangdong Medical University, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, China
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Microalgae as Potential Sources of Bioactive Compounds for Functional Foods and Pharmaceuticals. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12125877] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Microalgae are an untapped source of bioactive compounds with various biotechnological applications. Several species are industrially produced and commercialized for the feed or cosmetic industries, however, other applications in the functional food and pharmaceutical markets can be foreseen. In this study, nine industrial/commercial species were evaluated for in vitro antioxidant, calcium-chelating, anti-tumoral, and anti-inflammatory activities. The most promising extracts were fractionated yielding several promising fractions namely, of Tetraselmis striata CTP4 with anti-inflammatory activity (99.0 ± 0.8% reduction in TNF-α production in LPS stimulated human macrophages at 50 µg/mL), of Phaeodactylum Tricornutum with cytotoxicity towards cancerous cell lines (IC50 = 22.3 ± 1.8 μg/mL and 27.5 ± 1.6 μg/mL for THP-1 and HepG2, respectively) and of Porphyridium sp. and Skeletonema sp. with good chelating activity for iron, copper and calcium (IC50 = 0.047, 0.272, 0.0663 mg/mL and IC50 = 0.055, 0.240, 0.0850 mg/mL, respectively). These fractions were chemically characterized by GC–MS after derivatization and in all, fatty acids at various degrees of unsaturation were the most abundant compounds. Some of the species under study proved to be potentially valuable sources of antioxidant, metal chelators, anti-tumoral and anti-inflammatory compounds with possible application in the functional food and pharmaceutical industries.
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Rodrigues MJ, Jekő J, Cziáky Z, Pereira CG, Custódio L. The Medicinal Halophyte Frankenia laevis L. (Sea Heath) Has In Vitro Antioxidant Activity, α-Glucosidase Inhibition, and Cytotoxicity towards Hepatocarcinoma Cells. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11101353. [PMID: 35631777 PMCID: PMC9148066 DOI: 10.3390/plants11101353] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 05/03/2023]
Abstract
This work explored the medicinal halophyte Frankenia laevis L. (sea heath) as a potential source of bioactive natural products. In this sense, methanol and dichloromethane extracts were prepared from aerial organs containing flowers, leaves and stems, and were profiled for their chemical composition using high-performance liquid chromatography coupled with electrospray ionization mass spectrometry (HPLC-ESI-MS/MS). The extracts were evaluated for their in vitro antioxidant capacity using five complementary methods: enzyme inhibitory effects on enzymes related with neurodegeneration (acetyl (AChE) and butyrylcholinesterase (BuChE)), Type 2 diabetes (α-glucosidase and α-amylase), hyperpigmentation/food oxidation (tyrosinase), and cytotoxicity towards human hepatocarcinoma (HepG2) cells. Fifty-one molecules were identified in the extracts, including several derivatives of phenolic acids, lignans and flavonoids, monoterpenes, and hydroxylated derivatives of linoleic acid. The methanol extract was effective in DPPH and ABTS radical scavenging (EC50 = 0.25 and 0.65 mg/mL, respectively), copper chelation (EC50 = 0.78 mg/mL), and iron reduction (EC50 = 0.51 mg/mL) activities, whereas the dichloromethane extract had high iron chelating ability (EC50 = 0.76 mg/mL). Both extracts showed the capacity to inhibit α-glucosidase, especially the dichloromethane (EC50 = 0.52 mg/mL). This extract also exerted a significant selective cytotoxicity towards HepG2 cells (EC50 = 52.1 μg/mL, SI > 1.9). In conclusion, extracts from the aerial parts of sea heath were shown to be a promising source of natural products for pharmaceutical and/or food additive applications due to their high antioxidant, anti-diabetic, and cytotoxic properties.
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Affiliation(s)
- Maria João Rodrigues
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve, 8005-139 Faro, Portugal; (C.G.P.); (L.C.)
- Correspondence:
| | - József Jekő
- Agricultural and Molecular Research and Service Institute, University of Nyíregyháza, 4400 Nyíregyháza, Hungary; (J.J.); (Z.C.)
| | - Zoltán Cziáky
- Agricultural and Molecular Research and Service Institute, University of Nyíregyháza, 4400 Nyíregyháza, Hungary; (J.J.); (Z.C.)
| | - Catarina G. Pereira
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve, 8005-139 Faro, Portugal; (C.G.P.); (L.C.)
| | - Luísa Custódio
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve, 8005-139 Faro, Portugal; (C.G.P.); (L.C.)
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12
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Chen D, Jin Y, Hu D, Ye J, Lu Y, Dai Z. One-Step Preparative Separation of Fucoxanthin from Three Edible Brown Algae by Elution-Extrusion Countercurrent Chromatography. Mar Drugs 2022; 20:257. [PMID: 35447930 PMCID: PMC9024483 DOI: 10.3390/md20040257] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/01/2022] [Accepted: 04/01/2022] [Indexed: 02/07/2023] Open
Abstract
A method for batch preparation of fucoxanthin from brown algae was established, which possessed the advantages of high yield and high purity. The ultrasonic-assisted extraction method was used to obtain a crude extract from Sargassum fusiforme as the separation sample. Then the crude extract was separated by elution-extrusion countercurrent chromatography. The optimum preparation conditions of fucoxanthin were determined as follows: n-hexane-ethanol-water (20:9:11, v:v:v) as a two-phase solvent system, the mobile phase flow rate was 5 mL min-1, the revolution speed was 800 r min-1, the loading capacity was 60 mg 10 mL-1 and the temperature was 25 °C. By this method, 12.8 mg fucoxanthin with a purity of 94.72% was obtained from the crude extract of Sargassum fusiforme. In addition, when the loading capacity was 50 mg 10 mL-1, the purity of fucoxanthin reached 96.01%. Two types of by-products, chlorophyll and pheophytin, could also be obtained during the process of separation. This optimal method was further applied to separate fucoxanthin from Laminaria japonica and Undaria pinnatifida, and 6.0 mg and 9.7 mg fucoxanthin with a purity of 96.24% and 92.62% were acquired, respectively. Therefore, it was demonstrated that the preparation method of fucoxanthin established in this study had an applicability to brown algae, which improved the utilization value of raw materials.
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Affiliation(s)
| | | | | | | | - Yanbin Lu
- Key Laboratory of Aquatic Products Processing of Zhejiang Province, Collaborative Innovation Center of Seafood Deep Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China; (D.C.); (Y.J.); (D.H.); (J.Y.); (Z.D.)
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13
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Swantara MD, Rita WS, Dira MA, Agustina KK. Cervical anticancer activities of Annona squamosa Linn. leaf isolate. Vet World 2022; 15:124-131. [PMID: 35369588 PMCID: PMC8924393 DOI: 10.14202/vetworld.2022.124-131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 12/20/2021] [Indexed: 11/17/2022] Open
Abstract
Background and Aim: Cancer is one of the leading causes of death, the need for new anticancer herbal drugs is becoming more urgent considering the side effects of synthetic drugs. This study aimed to determine the anticancer activity of isolates derived from the methanol extract of Annona squamosa Linn. leaves and to identify the compounds that have an active effect against HeLa cells. Materials and Methods: The leaf metabolites of A. squamosa L. were extracted using methanol at room temperature (28°C) and were partitioned into n-hexane, chloroform, and n-butanol. The toxicity test of these extracts was conducted using a brine shrimp lethality assay. Furthermore, the most toxic extracts were separated and purified using silica gel column chromatography to yield four isolate fractions: FA, FB, FC, and FD. The most toxic isolates were tested for anticancer against HeLa cells, and their compounds were identified using liquid chromatography-mass spectrometry. Results: The results showed that the most toxic isolate with an LC50 value of 100.00 ppm had a potency similar to that of an anticancer agent with an IC50 value of 70.9021 ppm. Furthermore, the five compounds identified in this isolate include (6S, 7aR)-6-hydroxy-4,4,7a-trimethyl-6,7-dihydro-5H-1-benzofuran-2-one or loliolide, cocamidopropyl betaine, N-[3-(dimethylamino)propyl]dodecanamide or lauramidopropyl dimethylamine, linolenic acid, and 1-dodecyl-2-azepanone or laurocapram. Conclusion: It can be concluded that the leaf isolates of A. squamosa Linn. had shown anticancer activities against cervical cancer.
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Affiliation(s)
- Made Dira Swantara
- Department of Applied Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University, Denpasar, Bali 80225 Indonesia
| | - Wiwik Susanah Rita
- Department of Applied Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University, Denpasar, Bali 80225 Indonesia
| | - Made Asmarani Dira
- Clinical and Community Pharmacy Study Program, Faculty of Health, Bali Institute of Technology and Health, Denpasar, Bali 80225, Indonesia
| | - Kadek Karang Agustina
- Department of Public Health, The Faculty of Veterinary Medicine, Udayana University, Denpasar, Bali 80225, Indonesia
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14
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El-Mekkawy S, Hassan AZ, Abdelhafez MA, Mahmoud K, Mahrous KF, Meselhy MR, Sendker J, Abdel-Sattar E. Cytotoxicity, genotoxicity, and gene expression changes induced by methanolic extract of Moringa stenopetala leaf with LC-qTOF-MS metabolic profile. Toxicon 2021; 203:40-50. [PMID: 34610271 DOI: 10.1016/j.toxicon.2021.09.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 12/25/2022]
Abstract
Moringa stenopetala (Baker f.) Cuf.and other Moringa species have traditionally been used to treat various diseases. The purpose of this study was to determine the cytotoxic and genotoxic effects of the methanolic extract of M. stenopetala leaf and its fractions on selected tumor cells. Cytotoxicity was determined by MTT assay. The comet assay was used toassess DNA damage, and gel electrophoresis was used to determine DNA fragmentation. Gene expression was analyzed by qPCR using two specific genes for each cancer cell line. Fractionation of the methanolic extract (E-1) on Diaion HP-20 yielded five fractions (Fr-2 to Fr-6); only Fr-4 and Fr-6 were cytotoxic to breast cancer cells (MCF-7; IC50 = 58.3 ± 0.93 and 35.8 ± 2.44 μg/mL, respectively), human hepatocellular carcinoma cells (HepG2; IC50 = 57.8 ± 1.57 and 39.3 ± 1.90 μg/mL, respectively), and Fr-4 was cytotoxic to human colon cancer cells (HCT-116; IC50 = 94.2 ± 4.9 μg/mL). In addition, exposure of the cancer cells to Fr-4 and Fr-6 resulted in a high level of DNA damage. Moreover, relative expression of MTAP and CDKN2A in MCF-7 were increased, whereas expression of p21 and p53 in HCT-116, and APC and TERT in HepG2 were decreased, similar to that of doxorubicin. LC-qTOF-MS was used to identify metabolites in E-1, the majority of which were enriched in Fr-4. Two terpenes (loliolide and dihydroactinidiolide), the majority of the flavonoids, and niazirin were about two fold enriched in Fr-4, whereas the majority of the lipids were 4-10 fold enriched. However, Fr-6 hardly showed compounds other than the two terpenes that were enriched 1.5 and 7 fold. The findings suggest that Fr-4 and Fr-6 are promising sources of compounds possessing cytotoxic and genotoxic properties.
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Affiliation(s)
- Sahar El-Mekkawy
- Department of Chemistry of Natural Compounds, National Research Centre, Giza, 12622, Egypt
| | - Amal Z Hassan
- Department of Chemistry of Natural Compounds, National Research Centre, Giza, 12622, Egypt
| | | | - Khaled Mahmoud
- Pharmacognosy Department, National Research Centre, Giza, 12622, Egypt
| | - Karima F Mahrous
- Cell Biology Department, National Research Centre, Giza, 12622, Egypt
| | - Meselhy R Meselhy
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Jandirk Sendker
- Institute of Pharmaceutical Biology and Phytochemistry,University of Münster, Münster, Germany
| | - Essam Abdel-Sattar
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
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15
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Regulation of p53 Activity by (+)-Epiloliolide Isolated from Ulva lactuca. Mar Drugs 2021; 19:md19080450. [PMID: 34436289 PMCID: PMC8399812 DOI: 10.3390/md19080450] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 07/30/2021] [Accepted: 08/04/2021] [Indexed: 12/22/2022] Open
Abstract
Ulva lactuca (U. lactuca) is a green alga distributed worldwide and used as a food and cosmetic material. In our previous study, we determined the effects of U. lactuca methanol extracts on the UVB-induced DNA repair. In the present study, we fractionated U. lactuca methanol extracts to identify the effective compound for the DNA repair. MTT assay demonstrated that (+)-epiloliolide showed no cytotoxicity up to 100 μM in BJ-5ta human dermal fibroblast. Upon no treatment, exposure to UVB 400 J/m2 decreased cell viability by 45%, whereas (+)-epiloliolide treatment for 24 h after UVB exposure significantly increased the cell viability. In GO and GESA analysis, a number of differentially expressed genes were uniquely expressed in (+)-epiloliolide treated cells, which were enriched in the p53 signaling pathway and excision repair. Immunofluorescence demonstrated that (+)-epiloliolide increased the nuclear localization of p53. Comet assay demonstrated that (+)-epiloliolide decreased tail moment increased by UVB. Western blot analysis demonstrated that (+)-epiloliolide decreased the levels of p-p53, p21, Bax, and Bim, but increased that of Bcl-2. Reverse transcription PCR (RT-PCR) demonstrated that (+)-epiloliolide decreased the levels of MMP 1, 9, and 13, but increased that of COL1A1. These results suggest that (+)-epiloliolide regulates p53 activity and has protective effects against UVB.
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16
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Kim EN, Nabende WY, Jeong H, Hahn D, Jeong GS. The Marine-Derived Natural Product Epiloliolide Isolated from Sargassum horneri Regulates NLRP3 via PKA/CREB, Promoting Proliferation and Anti-Inflammatory Effects of Human Periodontal Ligament Cells. Mar Drugs 2021; 19:388. [PMID: 34356813 PMCID: PMC8304756 DOI: 10.3390/md19070388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 12/11/2022] Open
Abstract
Currently, periodontitis treatment relies on surgical operations, anti-inflammatory agents, or antibiotics. However, these treatments cause pain and side effects, resulting in a poor prognosis. Therefore, in this study, we evaluated the impact of the compound epiloliolide isolated from Sargassum horneri on the recovery of inflammatory inhibitors and loss of periodontal ligaments, which are essential treatment strategies for periodontitis. Here, human periodontal ligament cells stimulated with PG-LPS were treated with the compound epiloliolide, isolated from S. horneri. In the results of this study, epiloliolide proved the anti-inflammatory effect, cell proliferation capacity, and differentiation potential of periodontal ligament cells into osteoblasts, through the regulation of the PKA/CREB signaling pathway. Epiloliolide effectively increased the proliferation and migration of human periodontal ligament cells without cytotoxicity and suppressed the protein expression of proinflammatory mediators and cytokines, such as iNOS, COX-2, TNF-α, IL-6, and IL-1β, by downregulating NLRP3 activated by PG-LPS. Epiloliolide also upregulated the phosphorylation of PKA/CREB proteins, which play an important role in cell growth and proliferation. It was confirmed that the anti-inflammatory effect in PG-LPS-stimulated large cells was due to the regulation of PKA/CREB signaling. We suggest that epiloliolide could serve as a potential novel therapeutic agent for periodontitis by inhibiting inflammation and restoring the loss of periodontal tissue.
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Affiliation(s)
- Eun-Nam Kim
- College of Pharmacy, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Korea;
| | - Woguti Yvonne Nabende
- School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea; (W.Y.N.); (H.J.)
| | - Hyeyoon Jeong
- School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea; (W.Y.N.); (H.J.)
| | - Dongyup Hahn
- School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea; (W.Y.N.); (H.J.)
- Department of Integrative Biology, Kyungpook National University, Daegu 41566, Korea
| | - Gil-Saeng Jeong
- College of Pharmacy, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Korea;
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17
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Silva J, Alves C, Martins A, Susano P, Simões M, Guedes M, Rehfeldt S, Pinteus S, Gaspar H, Rodrigues A, Goettert MI, Alfonso A, Pedrosa R. Loliolide, a New Therapeutic Option for Neurological Diseases? In Vitro Neuroprotective and Anti-Inflammatory Activities of a Monoterpenoid Lactone Isolated from Codium tomentosum. Int J Mol Sci 2021; 22:1888. [PMID: 33672866 PMCID: PMC7918146 DOI: 10.3390/ijms22041888] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/03/2021] [Accepted: 02/10/2021] [Indexed: 02/08/2023] Open
Abstract
Parkinsons Disease (PD) is the second most common neurodegenerative disease worldwide, and is characterized by a progressive degeneration of dopaminergic neurons. Without an effective treatment, it is crucial to find new therapeutic options to fight the neurodegenerative process, which may arise from marine resources. Accordingly, the goal of the present work was to evaluate the ability of the monoterpenoid lactone Loliolide, isolated from the green seaweed Codium tomentosum, to prevent neurological cell death mediated by the neurotoxin 6-hydroxydopamine (6-OHDA) on SH-SY5Y cells and their anti-inflammatory effects in RAW 264.7 macrophages. Loliolide was obtained from the diethyl ether extract, purified through column chromatography and identified by NMR spectroscopy. The neuroprotective effects were evaluated by the MTT method. Cells' exposure to 6-OHDA in the presence of Loliolide led to an increase of cells' viability in 40%, and this effect was mediated by mitochondrial protection, reduction of oxidative stress condition and apoptosis, and inhibition of the NF-kB pathway. Additionally, Loliolide also suppressed nitric oxide production and inhibited the production of TNF-α and IL-6 pro-inflammatory cytokines. The results suggest that Loliolide can inspire the development of new neuroprotective therapeutic agents and thus, more detailed studies should be considered to validate its pharmacological potential.
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Affiliation(s)
- Joana Silva
- MARE—Marine and Environmental Sciences Centre, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.A.); (A.M.); (P.S.); (M.S.); (M.G.); (S.P.); (A.R.)
- Department of Pharmacology, Faculty of Veterinary, University of Santiago de Compostela, 27002 Lugo, Spain;
| | - Celso Alves
- MARE—Marine and Environmental Sciences Centre, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.A.); (A.M.); (P.S.); (M.S.); (M.G.); (S.P.); (A.R.)
| | - Alice Martins
- MARE—Marine and Environmental Sciences Centre, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.A.); (A.M.); (P.S.); (M.S.); (M.G.); (S.P.); (A.R.)
| | - Patrícia Susano
- MARE—Marine and Environmental Sciences Centre, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.A.); (A.M.); (P.S.); (M.S.); (M.G.); (S.P.); (A.R.)
| | - Marco Simões
- MARE—Marine and Environmental Sciences Centre, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.A.); (A.M.); (P.S.); (M.S.); (M.G.); (S.P.); (A.R.)
| | - Miguel Guedes
- MARE—Marine and Environmental Sciences Centre, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.A.); (A.M.); (P.S.); (M.S.); (M.G.); (S.P.); (A.R.)
| | - Stephanie Rehfeldt
- Cell Culture Laboratory, Graduate Program in Biotechnology, University of Vale do Taquari (Univates), Lajeado, RS 95914-014, Brazil; (S.R.); (M.I.G.)
| | - Susete Pinteus
- MARE—Marine and Environmental Sciences Centre, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.A.); (A.M.); (P.S.); (M.S.); (M.G.); (S.P.); (A.R.)
| | - Helena Gaspar
- BioISI—Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, 1749-016 Lisboa, Portugal;
| | - Américo Rodrigues
- MARE—Marine and Environmental Sciences Centre, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.A.); (A.M.); (P.S.); (M.S.); (M.G.); (S.P.); (A.R.)
| | - Márcia Ines Goettert
- Cell Culture Laboratory, Graduate Program in Biotechnology, University of Vale do Taquari (Univates), Lajeado, RS 95914-014, Brazil; (S.R.); (M.I.G.)
| | - Amparo Alfonso
- Department of Pharmacology, Faculty of Veterinary, University of Santiago de Compostela, 27002 Lugo, Spain;
| | - Rui Pedrosa
- MARE—Marine and Environmental Sciences Centre, ESTM, Polytechnic of Leiria, 2520-614 Peniche, Portugal
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