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Park YM, Lee HY, Shin DY, Kim SH, Yoo Y, Kim MJ, Kim MJ, Yang HJ, Park KH. Augmentation of NK-cell activity and immunity by combined natural polyphenols and saccharides in vitro and in vivo. Int J Biol Macromol 2024; 268:131908. [PMID: 38679269 DOI: 10.1016/j.ijbiomac.2024.131908] [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: 01/19/2024] [Revised: 04/02/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
Curcuma longa and Sargassum coreanum are commonly used in traditional pharmaceutical medicine to improve immune function in chronic diseases. The present study was designed to systematically elucidate the in vitro and in vivo immuno-enhancing effects of a combination of C. longa and S. coreanum extracts (CS) that contain polyphenols and saccharides as functional molecules in a cyclophosphamide (Cy)-induced model of immunosuppression. In primary splenocytes, we observed the ameliorative effects of CS on a Cy-induced immunosuppression model with low cytotoxicity and an optimal mixture procedure. CS treatment enhanced T- and B-cell proliferation, increased splenic natural killer-cell activity, and restored cytokine release. Wistar rats were orally administered low (30 mg/kg), intermediate (100 mg/kg), or high (300 mg/kg) doses of CS for four weeks, followed by oral administration of Cy (5 mg/kg) for four weeks. Compared with the vehicle group, low-, intermediate-, and high-dose CS treatment accelerated dose-dependent recovery of the serum level of tumor necrosis factor-α, interferon-γ, interleukin-2, and interleukin-12. These results suggest that CS treatment accelerates the amelioration of immune deficiency in Cy-treated primary splenocytes and rats, which supports considering it for immunity maintenance. Our findings provide experimental evidence for further research and clinical application in immunosuppressed patients.
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Affiliation(s)
- Young Mi Park
- INVIVO Co. Ltd., 121, Nonsan 32992, Republic of Korea; Department of Pathology, College of Korean Medicine, Wonkwang University, Iksan 54651, Republic of Korea
| | - Hak Yong Lee
- INVIVO Co. Ltd., 121, Nonsan 32992, Republic of Korea
| | | | - Suk Hun Kim
- Agricultural Corporation Company Nongjeongsim LC., Jeonju 55070, Republic of Korea
| | - Yeol Yoo
- Agricultural Corporation Company Nongjeongsim LC., Jeonju 55070, Republic of Korea
| | - Min Ji Kim
- Agricultural Corporation Company Nongjeongsim LC., Jeonju 55070, Republic of Korea
| | - Min Jung Kim
- Korea Food Research Institute, Wanju 55365, Republic of Korea
| | - Hye Jeong Yang
- Korea Food Research Institute, Wanju 55365, Republic of Korea.
| | - Kwang-Hyun Park
- Department of Emergency Medical Rescue and Department of Oriental Pharmaceutical Development, Nambu University, Gwangju 62271, Republic of Korea; Department of Emergency Medicine and BioMedical Science Graduate Program (BMSGP), Chonnam National University, Gwangju 61469, Republic of Korea.
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Peng Y, Yang X, Huang R, Ren B, Chen B, Liu Y, Zhang H. Diversified Chemical Structures and Bioactivities of the Chemical Constituents Found in the Brown Algae Family Sargassaceae. Mar Drugs 2024; 22:59. [PMID: 38393030 PMCID: PMC10890103 DOI: 10.3390/md22020059] [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: 12/20/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
Sargassaceae, the most abundant family in Fucales, was recently formed through the merging of the two former families Sargassaceae and Cystoseiraceae. It is widely distributed in the world's oceans, notably in tropical coastal regions, with the exception of the coasts of Antarctica and South America. Numerous bioactivities have been discovered through investigations of the chemical diversity of the Sargassaceae family. The secondary metabolites with unique structures found in this family have been classified as terpenoids, phlorotannins, and steroids, among others. These compounds have exhibited potent pharmacological activities. This review describes the new discovered compounds from Sargassaceae species and their associated bioactivities, citing 136 references covering from March 1975 to August 2023.
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Affiliation(s)
- Yan Peng
- College of Food Science and Engineering, Lingnan Normal University, Zhanjiang 524048, China; (Y.P.); (B.R.); (B.C.)
| | - Xianwen Yang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China;
| | - Riming Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China;
| | - Bin Ren
- College of Food Science and Engineering, Lingnan Normal University, Zhanjiang 524048, China; (Y.P.); (B.R.); (B.C.)
| | - Bin Chen
- College of Food Science and Engineering, Lingnan Normal University, Zhanjiang 524048, China; (Y.P.); (B.R.); (B.C.)
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;
| | - Hongjie Zhang
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong, China
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Choi HK, Hwang K, Hong YD, Cho YH, Kim JW, Lee EO, Park WS, Park CS. Ceramide NPs Derived from Natural Oils of Korean Traditional Plants Enhance Skin Barrier Functions and Stimulate Expressions of Genes for Epidermal Homeostasis. J Cosmet Dermatol 2022; 21:4931-4941. [PMID: 35262269 DOI: 10.1111/jocd.14905] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 02/06/2022] [Accepted: 03/01/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND New ceramide (CER) NPs were prepared by linking fatty acids derived from oils of Korean traditional plants to phytosphingosine(PHS). The oils of Korean traditional plants were extracted from the seeds of Panax ginseng, Camellia sinensis, Glycine max napjakong, Glycine max seoritae and Camellia japonica as sources of diverse fatty acids AIMS: To investigate signaling bioactivities of HP-C. sinensis ceramide NP that was column purified to remove any residual PHS and to evaluate the skin barrier functions of the HP-C. sinensis ceramide NP in human skin. METHODS The expressions of genes related with epidermal differentiation was analyzed in vitro by qPCR. Human studies were also performed to determine the skin barrier functions with respect of TEWL and SC cohesion. RESULTS The HP-C. sinensis CER NP significantly enhanced the expressions of FLG, CASP14 and INV indicates that the signaling biological activities of oil-derived ceramide NPs could be different depend on the natural oils. The control ceramide, C18-CER NP had no effect on the expression of the three genes. HP-C. sinensis CER NP was selected for the in vivo human studies. Application of 0.5% HP-C. sinensis CER NP cream stimulated significantly faster recovery of a disrupted skin barrier than that of the control C18-CER NP. A significant enhancement of SC cohesion of the skin treated with 0.5% HP-C. sinensis CER NP was also observed. CONCLUSION Taken all together, our results clearly demonstrate that HP-C. sinensis CER NP, P. ginseng CER NP and other oil-derived CER NP could be a better choice for developing moisturizers to improve skin barrier function as they more closely mimic the endogenous CER composition of the actual human skin barrier.
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Affiliation(s)
- Hyun Kyung Choi
- Department of Chemical Engineering, Dongguk University, 3-26, Pil-dong, Chung-gu, Seoul, 100-715, Republic of Korea
| | - Kyeonghwan Hwang
- Department of Chemical Engineering, Dongguk University, 3-26, Pil-dong, Chung-gu, Seoul, 100-715, Republic of Korea.,Department of R&D center, Amorepacific, Republic of Korea
| | | | - Young Hoon Cho
- Department of Chemical Engineering, Dongguk University, 3-26, Pil-dong, Chung-gu, Seoul, 100-715, Republic of Korea
| | - Jin Wook Kim
- SNU Business Incubator, 5-105, 89 Sehoro, Gwonseon-gu, Suwon, Gyeonggi-do, 16614, Republic of Korea
| | - Eun Ok Lee
- SNU Business Incubator, 5-105, 89 Sehoro, Gwonseon-gu, Suwon, Gyeonggi-do, 16614, Republic of Korea
| | - Won-Seok Park
- Department of R&D center, Amorepacific, Republic of Korea
| | - Chang Seo Park
- Department of Chemical Engineering, Dongguk University, 3-26, Pil-dong, Chung-gu, Seoul, 100-715, Republic of Korea.,SNU Business Incubator, 5-105, 89 Sehoro, Gwonseon-gu, Suwon, Gyeonggi-do, 16614, Republic of Korea
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Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue. Catalysts 2021. [DOI: 10.3390/catal11111377] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Herein, Sargassum coreanum (marine algae)-mediated silver nanoparticles (AgNPs) were successfully synthesized by a simple reduction method. The synthesized AgNPs were characterized using ultraviolet-visible spectroscopy, attenuated total reflection Fourier transformed infrared spectroscopy, X-ray diffractometry, field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray (EDX) spectroscopy, and high-resolution transmission electron microscopy (HR-TEM) analysis. The acquired colloidal AgNPs were strongly absorbed around 420 nm and displayed brown color under visible light. The XRD pattern of AgNPs exposed their face-centered cubic geometry along with crystalline nature. The HRTEM images of synthesized AgNPs confirmed the mean particle size of 19 nm with a distorted spherical shape, and the calculated interlayer distance (d-spacing value) was about 0.24 nm. Further, the catalytic degradation of methylene blue using sodium borohydride and AgNPs was monitored using UV–vis spectroscopy. The result revealed that AgNPs performed as a superior catalyst, which completely degraded MB in 20 min. The rate constant for MB degradation was calculated to be 0.106 min−1, demonstrating that the marine algae-mediated AgNPs had outstanding catalytic activity. This approach is easy and environmentally benign, which can be applied for environmental-based applications such as dye degradation and pollutant detoxification.
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Seasonal Nutritional Profile of Gelidium corneum (Rhodophyta, Gelidiaceae) from the Center of Portugal. Foods 2021; 10:foods10102394. [PMID: 34681442 PMCID: PMC8536063 DOI: 10.3390/foods10102394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/04/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022] Open
Abstract
Gelidium corneum is a well-known agarophyte, harvested worldwide for its high agar quality. However, the species also exhibits an interesting nutritional profile, but with seasonal variations. Therefore, to evaluate the nutritional value of G. corneum, ash, crude protein, total lipids, and carbohydrates were analyzed at different times of the year. The heavy metals mercury, arsenic, lead, cadmium, and tin, as well as iodine were also measured. Finally, the seasonal antioxidant capacity of G. corneum extracts was evaluated. Our results indicate that the biomass is rich in protein (up to 16.25 ± 0.33%) and carbohydrates (up to 39.5 ± 3.29%), and low in lipids (up to 2.75 ± 0.28%), and especially in the summer, the AI, TI indexes, n-6/n-3 and h/H ratios (0.93, 0.6, 0.88 and 1.08, respectively) are very interesting. None of the contaminants exceeded the legally established limits, and the iodine values were adequate for a healthy diet. Finally, the antioxidant capacity is fair, with the DPPH ≤ 10.89 ± 1.46%, and ABTS ≤ 13.90 ± 1.54% inhibition, FRAP ≤ 0.91 ± 0.22 AAE.g−1, and TPC ≤ 6.82 ± 0.26 GAE.g−1. The results show that G. corneum is an attractive resource, with potential use as food or as a food supplement.
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Bioactive Compounds from Medicinal Plants in Myanmar. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2021; 114:135-251. [PMID: 33792861 DOI: 10.1007/978-3-030-59444-2_2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Myanmar is a country with rich natural resources and of these, medicinal plants play a vital role in the primary health care of its population. The people of Myanmar have used their own system of traditional medicine inclusive of the use of medicinal plants for 2000 years. However, systematic and scientific studies have only recently begun to be reported. Researchers from Japan, Germany, and Korea have collaborated with researchers in Myanmar on medicinal plants since 2000. During the past two decades, over 50 publications have been published in peer-reviewed journals. Altogether, 433 phytoconstituents, including 147 new and 286 known compounds from 26 plant species consisting of 29 samples native to Myanmar, have been collated. In this contribution, phytochemical and biological investigations of these plants, including information on traditional knowledge are compiled and discussed.
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Stojković D, Kostić M, Smiljković M, Aleksić M, Vasiljević P, Nikolić M, Soković M. Linking Antimicrobial Potential of Natural Products Derived from Aquatic Organisms and Microbes Involved in Alzheimer's Disease - A Review. Curr Med Chem 2020. [PMID: 29521212 DOI: 10.2174/0929867325666180309103645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The following review is oriented towards microbes linked to Alzheimer's disease (AD) and antimicrobial effect of compounds and extracts derived from aquatic organisms against specific bacteria, fungi and viruses which were found previously in patients suffering from AD. Major group of microbes linked to AD include bacteria: Chlamydia pneumoniae, Helicobacter pylori, Porphyromonas gingivalis, Fusobacterium nucleatum, Prevotella intermedia, Actinomyces naeslundii, spirochete group; fungi: Candida sp., Cryptococcus sp., Saccharomyces sp., Malassezia sp., Botrytis sp., and viruses: herpes simplex virus type 1 (HSV-1), Human cytomegalovirus (CMV), hepatitis C virus (HCV). In the light of that fact, this review is the first to link antimicrobial potential of aquatic organisms against these sorts of microbes. This literature review might serve as a starting platform to develop novel supportive therapy for patients suffering from AD and to possibly prevent escalation of the disease in patients already having high-risk factors for AD occurrence.
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Affiliation(s)
- Dejan Stojković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Marina Kostić
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Marija Smiljković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Milena Aleksić
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Nis, Visegradska 33, 18000 Nis, Serbia
| | - Perica Vasiljević
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Nis, Visegradska 33, 18000 Nis, Serbia
| | - Miloš Nikolić
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Marina Soković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
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Khanh Tran HN, Youn UJ, Kim JA, Chae H, Kim S, Min BS. Glycerols and fatty acids isolated from Micractinium sp. KSF0031. BIOCHEM SYST ECOL 2020. [DOI: 10.1016/j.bse.2019.104000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rushdi MI, Abdel-Rahman IAM, Saber H, Attia EZ, Abdelraheem WM, Madkour HA, Hassan HM, Elmaidomy AH, Abdelmohsen UR. Pharmacological and natural products diversity of the brown algae genus Sargassum. RSC Adv 2020; 10:24951-24972. [PMID: 35517468 PMCID: PMC9055232 DOI: 10.1039/d0ra03576a] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/13/2020] [Indexed: 12/22/2022] Open
Abstract
Sargassum (F. Sargassaceae) is an important seaweed excessively distributed in tropical and subtropical regions.
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Affiliation(s)
- Mohammed I. Rushdi
- Department of Pharmacognosy
- Faculty of Pharmacy
- South Valley University
- Qena
- Egypt
| | | | - Hani Saber
- Department of Botany and Microbiology
- Faculty of Science
- South Valley University
- Qena
- Egypt
| | - Eman Zekry Attia
- Department of Pharmacognosy
- Faculty of Pharmacy
- Minia University
- 61519 Minia
- Egypt
| | - Wedad M. Abdelraheem
- Department of Medical Microbiology and Immunology
- Faculty of Medicine
- Minia University
- 61519 Minia
- Egypt
| | - Hashem A. Madkour
- Department of Marine and Environmental Geology
- National Institute of Oceanography and Fisheries
- 84511 Hurghada
- Egypt
| | - Hossam M. Hassan
- Department of Pharmacognosy
- Faculty of Pharmacy
- Beni-Suef University
- Beni-Suef
- Egypt
| | - Abeer H. Elmaidomy
- Department of Pharmacognosy
- Faculty of Pharmacy
- Beni-Suef University
- Beni-Suef
- Egypt
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Abstract
Four new octadecanoid derivatives (1-4) including a pair of enantiomers (1/2), along with 12 known analogues (5-16), were isolatedfrom the seeds of Ipomoea nil. Their structures were determined by detailed spectroscopic analyses and comparison with reported data of structurally related compounds, with the absolute configurations of 1 and 2 being assigned by an in situ dimolybdenum ECD method. Our bioassays revealed that these isolates did not show ABTS radical scavenging activity while 10 and 13 displayed better α-glucosidase inhibitory activity than the positive control acarbose (IC50 167.7 ± 1.55 μmol·L-1), with IC50 of 92.73 ± 3.12 and 11.39 ± 2.18μmol·L-1, respectively.
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Monoglycerol ester, galloylglucoside and phenolic derivatives from Gymnosporia senegalensis leaves. BIOCHEM SYST ECOL 2019. [DOI: 10.1016/j.bse.2018.12.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Barbosa SL, Lima PC, dos Santos WT, Klein SI, Clososki GC, Caires FJ. Oxygenated biofuels: Synthesis of fatty acid solketal esters with a mixture of sulfonated silica and (Bu4N)(BF4) catalyst. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2018.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Di X, Oskarsson JT, Omarsdottir S, Freysdottir J, Hardardottir I. Lipophilic fractions from the marine sponge Halichondria sitiens decrease secretion of pro-inflammatory cytokines by dendritic cells and decrease their ability to induce a Th1 type response by allogeneic CD4 + T cells. PHARMACEUTICAL BIOLOGY 2017; 55:2116-2122. [PMID: 28876152 PMCID: PMC6130455 DOI: 10.1080/13880209.2017.1373832] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
CONTEXT Halichondria (Halichondriidae) marine sponges contain components possessing various biological activities, but immunomodulation is not among the ones reported. OBJECTIVE This study evaluated the immunomodulatory effects of fractions/compounds from Halichondria sitiens Schmidt. MATERIALS AND METHODS Crude dichloromethane/methanol extracts of H. sitiens were subjected to various chromatographic techniques to obtain fractions/compounds with immunomodulatory activity, using bioassay-guided isolation. The effects of the fractions/compounds were determined by measuring secretion of cytokines and expression of surface molecules by dendritic cells (DCs) and their ability to stimulate and modify cytokine secretion by allogeneic CD4+ T cells. The bioactive fractions were chemically analyzed to identify the immunomodulatory constituents by 1D, 2D NMR, and HRMS data. RESULTS Several lipophilic fractions from H. sitiens at 10 μg/mL decreased secretion of the pro-inflammatory cytokines IL-12p40 and IL-6 by the DCs, with maximum inhibition being 64% and 25%, respectively. In addition, fractions B3b3F and B3b3J decreased the ability of DCs to induce T cell secretion of IFN-γ. Fraction B3b3 induced morphological changes in DCs, characterized by extreme elongation of dendrites and cell clustering. Chemical screening revealed the presence of glycerides and some minor unknown constituents in the biologically active fractions. One new glyceride, 2,3-dihydroxypropyl 2-methylhexadecanoate (1), was isolated from one fraction and two known compounds, 3-[(1-methoxyhexadecyl)oxy]propane-1,2-diol (2) and monoheptadecanoin (3), were identified in another, but none of them had immunomodulatory activity. DISCUSSION AND CONCLUSIONS These results demonstrate that several lipophilic fractions from H. sitiens have anti-inflammatory effects on DCs and decrease their ability to induce a Th1 type immune response.
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Affiliation(s)
- Xiaxia Di
- Faculty of Pharmaceutical Sciences, University of Iceland, Reykjavik, Iceland
- Department of Immunology, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland
| | - Jon T. Oskarsson
- Department of Immunology, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland
- Centre for Rheumatology Research, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland
- Faculty of Medicine, Biomedical Center, University of Iceland, Reykjavik, Iceland
| | | | - Jona Freysdottir
- Department of Immunology, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland
- Centre for Rheumatology Research, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland
- Faculty of Medicine, Biomedical Center, University of Iceland, Reykjavik, Iceland
| | - Ingibjorg Hardardottir
- Department of Immunology, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland
- Faculty of Medicine, Biomedical Center, University of Iceland, Reykjavik, Iceland
- CONTACT Ingibjorg HardardottirFaculty of Medicine, Biomedical Center, University of Iceland, Vatnsmyrarvegur 16, 101Reykjavik, Iceland
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Chama MA, Dziwornu GA, Waibel R, Osei-Safo D, Addae-Mensah I, Otchere J, Wilson M. Isolation, characterization, and anthelminthic activities of a novel dichapetalin and other constituents of Dichapetalum filicaule. PHARMACEUTICAL BIOLOGY 2016; 54:1179-1188. [PMID: 26118692 DOI: 10.3109/13880209.2015.1059861] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
CONTEXT Dichapetalum filicaule Breteler (Dichapetalaceae) is a rare species occurring only in Côte d'Ivoire and Ghana. Although research on several species of the genus has produced interesting bioactive compounds, particularly the Dichapetalins, a novel class of triterpenoids with antineoplastic properties, there is virtually no information on the ethnobotanical uses and chemical constituents of D. filicaule. OBJECTIVE The phytochemical and anthelminthic activities of the constituents of D. filicaule were investigated. MATERIALS AND METHODS Chemical constituents of the petroleum ether, chloroform-acetone, and methanol root extracts of D. filicaule were isolated by column chromatography and characterized by their physico-chemical properties, 1-D and 2-D NMR spectroscopy and mass spectrometry. In vitro anthelminthic activity of the extracts and compounds against the human hookworm, Necator americanus, Stiles 1902 (Nematoda: Ancylostomatidae) was determined within a concentration range of 2500-250 μg/ml using the Egg Hatch Inhibition (EHI) Assay. The hookworm species were identified using a published polymerase chain reaction (PCR) method. RESULTS A new dichapetalin, dichapetalin X (1), together with the known dichapetalin A (2), pomolic acid (3), glycerol monostearate (4), D:A-friedooleanan-3β-ol (5), and D:A-friedooleanan-3-one (6) were isolated. Compounds 1, 2, and 4 exhibited EHI with IC50 values of 523.2, 162.4, and 306.0 μg/ml, respectively, against the hookworm. The positive control albendazole gave an IC50 value of 93.27 μg/ml. DISCUSSION AND CONCLUSION This is the first report of the phytochemical investigation of D. filicaule. The study has yielded a new dichapetalin and also demonstrated the potential anthelminthic properties of the constituents.
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Affiliation(s)
- Mary Anti Chama
- a Department of Chemistry , University of Ghana , Legon , Ghana
| | | | - Reiner Waibel
- b Department of Chemistry and Pharmacy , Friederich Alexander University of Erlangen-Nurnberg , Erlangen , Germany , and
| | | | | | - Joseph Otchere
- c Department of Parasitology , Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana , Legon , Ghana
| | - Michael Wilson
- c Department of Parasitology , Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana , Legon , Ghana
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Suh WS, Lee SR, Kim CS, Moon E, Kim SY, Choi SU, Kang KS, Lee KR, Kim KH. A New Monoacylglycerol from the Fruiting Bodies of Gymnopilus Spectabilis. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14546877525997] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bioassay-guided fractionation and chemical investigation of the MeOH extract of the wild mushroom Gymnopilus spectabilis resulted in the isolation of a new monoacylglycerol, together with five known compounds. The structure of the new compound (2′ S) −1- O-(6,6-dimethoxyhexanol)-glycerol was elucidated on the basis of 1D and 2D NMR (1H and 13C NMR, 1H-1H COSY, HMQC and HMBC) spectroscopic data as well as chemical reactions. The known compounds were identified by comparison of their spectroscopic and physical data with the reported values. The metabolites were evaluated for their anti-proliferative activities against four human tumour cell lines (A549, SK-OV-3, SK-MEL-2 and HCT-15) and for their inhibitory effects on nitric oxide production in lipopolysaccharide (LPS)-activated murine microglial cells.
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Affiliation(s)
- Won Se Suh
- School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Chung Sub Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Eunjung Moon
- Charmzone R&D Center, Charmzone Co. LTD., Wonju 220-962, Republic of Korea
| | - Sun Yeou Kim
- College of Pharmacy, Gachon University, Incheon 406-799, Republic of Korea
| | - Sang Un Choi
- Korea Research Institute of Chemical Technology, Deajeon 305-600, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 461-701, Republic of Korea
| | - Kang Ro Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
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Payghami N, Jamili S, Rustaiyan A, Saeidnia S, Nikan M, Gohari AR. Alpha-amylase inhibitory activity and sterol composition of the marine algae, Sargassum glaucescens. Pharmacognosy Res 2015; 7:314-21. [PMID: 26692744 PMCID: PMC4660509 DOI: 10.4103/0974-8490.167893] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Sargassum species (phaeophyceae) are economically important brown algae in southern parts of Iran. Sargassum is mainly harvested as a row material in alginate production industries and is a source of plant foods or plant bio-stimulants even a component of animal foods. OBJECTIVE In this study, Sargassum glaucescens, collected from the seashore of Chabahar, was employed for phytochemical and biological evaluations. MATERIALS AND METHODS For that purpose, the dried algae was extracted by methanol and subjected to different chromatographic separation methods. RESULTS Six sterols, fucosterol (1), 24(S)-hydroxy-24-vinylcholesterol (2), 24(R)-hydroxy-24-vinylcholesterol (3), stigmasterol (4), β-sitosterol (5) and cholesterol (6) were identified by spectroscopic methods including (1)H-NMR, (13)C-NMR and mass spectroscopy. In vitro alpha-amylase inhibitory test was performed on the methanolic extract and the results revealed a potent inhibition (IC50 = 8.9 ± 2.4 mg/mL) of the enzyme compared to acarbose as a positive control. CONCLUSION Various biological activities and distribution of sterols in Sargassum genus have been critically reviewed here. The results concluded that these algae are a good candidate for further anti-diabetic investigations in animals and human.
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Affiliation(s)
- Nasrin Payghami
- Department of Marine Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Shahla Jamili
- Department of Marine Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Abdolhossein Rustaiyan
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Soodabeh Saeidnia
- Medicinal Plants Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Marjan Nikan
- Medicinal Plants Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Ahmad Reza Gohari
- Medicinal Plants Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Logvinov S, Gerasimenko N, Esipov A, Denisenko VA. Examination of the structures of several glycerolipids from marine macroalgae by NMR and GC-MS. JOURNAL OF PHYCOLOGY 2015; 51:1066-1074. [PMID: 26987002 DOI: 10.1111/jpy.12338] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Accepted: 07/29/2015] [Indexed: 06/05/2023]
Abstract
Several classes of glycerolipids were isolated from the total lipids of the algae Saccharina cichorioides, Eualaria fistulosa, Fucus evanescens, Sargassum pallidum, Silvetia babingtonii (Ochrophyta, Phaeophyceae), Tichocarpus crinitus, and Neorhodomela larix (Rhodophyta, Florideophyceae). The structures of these lipids were examined by nuclear magnetic resonance (NMR) spectroscopy, including 1D ((1) H and (13) C) and 2D (COSY, HSQC and HMBC) experiments. All of the investigated algae included common galactolipids and sulfonoglycolipids as the major glycolipids. Minor glycolipids isolated from S. cichorioides, T. crinitus, and N. laris were identified as lyso-galactolipids with a polar group consisted of the galactose. Comparison of the (1) H NMR data of minor nonpolar lipids isolated from the extracts of the brown algae S. pallidum and F. evanescens with the (1) H NMR data of other lipids allowed them to be identified as diacylglycerols. The structures of betaine lipids isolated from brown algae were confirmed by NMR for the first time. The fatty acid compositions of the isolated lipids were determined by gas chromatography-mass spectrometry.
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Affiliation(s)
- Stepan Logvinov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690022, Russia
| | - Natalia Gerasimenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690022, Russia
| | - Andrey Esipov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690022, Russia
| | - Vladimir A Denisenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690022, Russia
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18
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Heo SJ, Jang J, Ye BR, Kim MS, Yoon WJ, Oh C, Kang DH, Lee JH, Kang MC, Jeon YJ, Kang SM, Kim D, Kim KN. Chromene suppresses the activation of inflammatory mediators in lipopolysaccharide-stimulated RAW 264.7 cells. Food Chem Toxicol 2014; 67:169-75. [PMID: 24593990 DOI: 10.1016/j.fct.2014.02.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 02/06/2014] [Accepted: 02/11/2014] [Indexed: 12/15/2022]
Abstract
Inflammation is complex process involving a variety of immune cells that defend the body from harmful stimuli. However, pro-inflammatory cytokines and inflammatory mediators can also exacerbate diseases such as cancer. The aim of this study was to identify a natural effective remedy for inflammation. We isolated a functional algal chromene compound from Sargassum siliquastrum, named sargachromanol D (SD). We evaluated the anti-inflammatory effect of SD on lipopolysaccharide (LPS)-exposed RAW 264.7 cells by measuring cell viability, cytotoxicity, and production of inflammatory mediators such as nitric oxide (NO), prostaglandin E2 (PGE2), inducible NO synthase (iNOS), cyclooxygenase-2 (COX-2), and the pro-inflammatory cytokines tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6. SD inhibited production of NO and PGE2 from LPS-induced cells by preventing the expression of inflammatory mediators such as iNOS and COX-2 in a dose-dependent manner. Concurrently, levels of the pro-inflammatory cytokines TNF-α, IL-1β, and IL-6 were reduced with increasing concentrations of SD. In addition, SD inhibited the activation of NF-κB and mitogen-activated protein kinases (MAPKs) pathways in a concentration-dependent manner. These results indicate that SD inhibits LPS-stimulated inflammation by inhibition of the NF-κB and MAPKs pathways in macrophages.
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Affiliation(s)
- Soo-Jin Heo
- Global Bioresources Research Center, Korea Institute of Ocean Science & Technology, Ansan 426-744, Republic of Korea
| | - Jiyi Jang
- Global Bioresources Research Center, Korea Institute of Ocean Science & Technology, Ansan 426-744, Republic of Korea
| | - Bo-Ram Ye
- Global Bioresources Research Center, Korea Institute of Ocean Science & Technology, Ansan 426-744, Republic of Korea
| | - Min-Sun Kim
- Global Bioresources Research Center, Korea Institute of Ocean Science & Technology, Ansan 426-744, Republic of Korea
| | - Weon-Jong Yoon
- Jeju Biodiversity Research Institute (JBRI), Jeju TECHNOPARK (JTP), Jeju 699-943, Republic of Korea.
| | - Chulhong Oh
- Global Bioresources Research Center, Korea Institute of Ocean Science & Technology, Ansan 426-744, Republic of Korea
| | - Do-Hyung Kang
- Global Bioresources Research Center, Korea Institute of Ocean Science & Technology, Ansan 426-744, Republic of Korea
| | - Ji-Hyeok Lee
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Min-Cheol Kang
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - You-Jin Jeon
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Sung-Myung Kang
- Pediatric Oncology Experimental Therapeutics Investigators Consortium (POETIC) Laboratory for Pre-Clinical and Drug Discovery Studies, University of Calgary, Calgary, AB, Canada
| | - Daekyung Kim
- Marine Bio Research Team, Korea Basic Science Institute (KBSI), Jeju 690-140, Republic of Korea
| | - Kil-Nam Kim
- Marine Bio Research Team, Korea Basic Science Institute (KBSI), Jeju 690-140, Republic of Korea.
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19
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Kumari P, Reddy CRK, Jha B. Comparative evaluation and selection of a method for lipid and fatty acid extraction from macroalgae. Anal Biochem 2011; 415:134-44. [PMID: 21539805 DOI: 10.1016/j.ab.2011.04.010] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 03/16/2011] [Accepted: 04/06/2011] [Indexed: 11/17/2022]
Abstract
A comparative evaluation of Bligh and Dyer, Folch, and Cequier-Sánchez methods for quantitative determination of total lipids (TLs) and fatty acids (FAs) was accomplished in selective green (Ulva fasciata), red (Gracilaria corticata), and brown algae (Sargassum tenerrimum) using a full factorial categorical design. Applications of sonication and buffer individually on lipid extraction solvent systems were also evaluated. The FA recoveries obtained from the aforementioned methods were compared with those of direct transesterification (DT) methods to identify the best extraction methods. The experimental design showed that macroalgal matrix, extraction method, and buffer were key determinants for TL and FA recoveries (P≤0.05), exhibiting significant interactions. But sonication gave erratic results with no interaction with any of the factors investigated. The buffered solvent system of Folch rendered the highest TL yield in U. fasciata and G. corticata while the buffered system of Bligh and Dyer gave the highest yield in S. tenerrimum. DT methods were more convenient and accurate for FA quantification and rendered 1.5-2 times higher yields when compared with the best conventional method, minimizing the use of chlorinated solvents, their cost of analysis, and disposal. The buffered solvent system was found to be the most appropriate for lipid research in macroalgae.
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Affiliation(s)
- Puja Kumari
- Discipline of Marine Biotechnology and Ecology, Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research, Bhavnagar 364021, Gujarat, India
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20
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Choi BW, Lee HS, Lee KB, Lee BH. Isolation of diacyl glycerol acyl transferase (DGAT) inhibitors from Pachydictyon coriaceum. Phytother Res 2011; 25:1041-5. [PMID: 21254273 DOI: 10.1002/ptr.3391] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The pharmacological inhibition of acyl CoA:diacylglycerol acyltransferase (DGAT, EC 2.3.1.20) has emerged as a target for the treatment of obesity and type 2 diabetes. Chromatographic analysis of the brown alga, Pachydictyon coriaceum, led to the isolation of diterpene dictyol E and hydroxyisocrenulatin. Pharmacological assay of these compounds demonstrated DGAT inhibitory activity with IC₅₀ values of 46.0 μM and 23.3 μM, respectively.
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Affiliation(s)
- Byoung Wook Choi
- Department of Biotechnology, Hanbat National University, Dukmyung-dong, Yuseong-gu, Daejeon 305-719, Republic of Korea
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21
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Mayer AMS, Rodríguez AD, Berlinck RGS, Fusetani N. Marine pharmacology in 2007-8: Marine compounds with antibacterial, anticoagulant, antifungal, anti-inflammatory, antimalarial, antiprotozoal, antituberculosis, and antiviral activities; affecting the immune and nervous system, and other miscellaneous mechanisms of action. Comp Biochem Physiol C Toxicol Pharmacol 2011; 153:191-222. [PMID: 20826228 PMCID: PMC7110230 DOI: 10.1016/j.cbpc.2010.08.008] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 08/25/2010] [Accepted: 08/25/2010] [Indexed: 11/23/2022]
Abstract
The peer-reviewed marine pharmacology literature in 2007-8 is covered in this review, which follows a similar format to the previous 1998-2006 reviews of this series. The preclinical pharmacology of structurally characterized marine compounds isolated from marine animals, algae, fungi and bacteria is discussed in a comprehensive manner. Antibacterial, anticoagulant, antifungal, antimalarial, antiprotozoal, antituberculosis and antiviral activities were reported for 74 marine natural products. Additionally, 59 marine compounds were reported to affect the cardiovascular, immune and nervous systems as well as to possess anti-inflammatory effects. Finally, 65 marine metabolites were shown to bind to a variety of receptors and miscellaneous molecular targets, and thus upon further completion of mechanism of action studies, will contribute to several pharmacological classes. Marine pharmacology research during 2007-8 remained a global enterprise, with researchers from 26 countries, and the United States, contributing to the preclinical pharmacology of 197 marine compounds which are part of the preclinical marine pharmaceuticals pipeline. Sustained preclinical research with marine natural products demonstrating novel pharmacological activities, will probably result in the expansion of the current marine pharmaceutical clinical pipeline, which currently consists of 13 marine natural products, analogs or derivatives targeting a limited number of disease categories.
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Affiliation(s)
- Alejandro M S Mayer
- Department of Pharmacology, Chicago College of Osteopathic Medicine, Midwestern University, 555 31st Street, Downers Grove, IL 60515, USA.
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22
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Kim KH, Moon EJ, Kim SY, Lee KR. Anti-melanogenic Fatty Acid Derivatives from the Tuber-barks of Colocasia antiquorum var. esculenta. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.7.2051] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Hyun Kim K, Keun Ha S, Yeou Kim S, Joo Youn H, Ro Lee K. Constituents of Limonia acidissima inhibit LPS-induced nitric oxide production in BV-2 microglia. J Enzyme Inhib Med Chem 2010; 25:887-92. [DOI: 10.3109/14756360903514156] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ki Hyun Kim
- Natural Products Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Korea
| | - Sang Keun Ha
- Graduate School of East-West Medical Science, Kyung Hee University, #1 Seocheon-dong, Gihung-gu, Yongin-city, Gyeonggi-do 446-701, Korea
| | - Sun Yeou Kim
- Graduate School of East-West Medical Science, Kyung Hee University, #1 Seocheon-dong, Gihung-gu, Yongin-city, Gyeonggi-do 446-701, Korea
- East-West Integrated Medical Science Rearch Center, Kyung Hee University, #1 Seocheon-dong, Giheung-gu, Yongin-city, Gyeonggi-do 446-701, Korea
| | - Hyun Joo Youn
- School of Biological Sciences and Bio-health Products Research Center, Inje University, Gimhae, 621-749, Korea
| | - Kang Ro Lee
- Natural Products Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Korea
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24
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Blunt JW, Copp BR, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2010; 27:165-237. [DOI: 10.1039/b906091j] [Citation(s) in RCA: 322] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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25
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Kim KH, Choi SU, Lee KR. Neomastoidin A, a Novel Monoacylglycerol with an Amino Acid Moiety fromMacrolepiota neomastoidea. CHEM LETT 2009. [DOI: 10.1246/cl.2009.894] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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Gamal-Eldeen AM, Ahmed EF, Abo-Zeid MA. In vitro cancer chemopreventive properties of polysaccharide extract from the brown alga, Sargassum latifolium. Food Chem Toxicol 2009; 47:1378-84. [PMID: 19306910 DOI: 10.1016/j.fct.2009.03.016] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2008] [Revised: 02/14/2009] [Accepted: 03/11/2009] [Indexed: 01/15/2023]
Abstract
Polysaccharides of edible algae attracted extensive interest due to their numerous biological activities. Sargassum latifolium (Turner) C. Agardh, belongs to Sargassaceae, is a brown algae in red sea shores in Egypt. This work is a novel attempt to explore the cancer chemopreventive activity of different fractions of water-soluble polysaccharide extract derived from S. latifolium. Estimation of cancer chemopreventive activity, specifically anti-initiation, including the modulation of carcinogen metabolism and the antioxidant capacity, revealed that E1 and E4 were potent anti-initiators, where they lead not only to an inhibition in the carcinogen activator cytochrome P450 1A (IC50 2.54 and 10.30 microg/ml, respectively), but also to an induction in the carcinogen detoxification enzymes glutathione-S-transferases (144% and 225% of the control, respectively). E1 and E4 inhibited 59% and 63% of the induced-DNA damage, as measured by comet assay. Similarly both E1 and E4 possessed potential anti-promoting properties as indicated by their anti-inflammatory activity. E1 and E4 enhanced the macrophage proliferation; however they dramatically inhibited the stimulated NO (30.7% and 59.3%), TNF-alpha (38.2% and 54.9) and COX-2 (20% and 18%), respectively. E3 showed a selective cytotoxicity against lymphoblastic leukemia (1301 cells), while other fraction extracts had no cytotoxic effect against all tested cell lines. E3 led to a major disturbance in cell cycle including arrest in both S-phases in 1301 cells. This disturbance was associated with an induced-cell death due to apoptosis, but not necrosis. In conclusion, E1 and E4 are promising cancer chemopreventive fractions, since they had tumor anti- initiating activity via their protective modulation of carcinogen metabolism, and tumor anti-promoting activity via their anti-inflammatory activity, while E3 can be considered as a promising anti-cancer agent against leukemia.
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Affiliation(s)
- Amira M Gamal-Eldeen
- Cancer Biology Laboratory, Center of Excellency for Advanced Sciences, National Research Centre, Dokki 12622, Cairo, Egypt.
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27
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Jung M, Jang KH, Kim B, Lee BH, Choi BW, Oh KB, Shin J. Meroditerpenoids from the brown alga Sargassum siliquastrum. JOURNAL OF NATURAL PRODUCTS 2008; 71:1714-9. [PMID: 18817444 DOI: 10.1021/np800321y] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Eleven new meroditerpenoids (7-11, 14-17, 19, 20) and nine known compounds (1-6, 12, 13, 18) were isolated from the brown alga Sargassum siliquastrum. Combined chemical and spectroscopic analyses revealed a common tetraprenyl hydroquinone structure; these compounds belonged to the nahocol, isonahocol, and sargahydroquinoic acid classes. The dihydroquinone moiety of 20 was unique and unprecedented in a brown alga. Stereochemical assignments were made for several of the known compounds based on their chemical reactivity. These compounds exhibited moderate to significant radical-scavenging activity as well as weak inhibitory activities against sortase A and isocitrate lyase.
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Affiliation(s)
- Misong Jung
- Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
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