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Fukuyama Y, Kubo M, Harada K. Neurotrophic Natural Products. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2024; 123:1-473. [PMID: 38340248 DOI: 10.1007/978-3-031-42422-9_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
Neurotrophins (NGF, BDNF, NT3, NT4) can decrease cell death, induce differentiation, as well as sustain the structure and function of neurons, which make them promising therapeutic agents for the treatment of neurodegenerative disorders. However, neurotrophins have not been very effective in clinical trials mostly because they cannot pass through the blood-brain barrier owing to being high-molecular-weight proteins. Thus, neurotrophin-mimic small molecules, which stimulate the synthesis of endogenous neurotrophins or enhance neurotrophic actions, may serve as promising alternatives to neurotrophins. Small-molecular-weight natural products, which have been used in dietary functional foods or in traditional medicines over the course of human history, have a great potential for the development of new therapeutic agents against neurodegenerative diseases such as Alzheimer's disease. In this contribution, a variety of natural products possessing neurotrophic properties such as neurogenesis, neurite outgrowth promotion (neuritogenesis), and neuroprotection are described, and a focus is made on the chemistry and biology of several neurotrophic natural products.
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Affiliation(s)
- Yoshiyasu Fukuyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan.
| | - Miwa Kubo
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan
| | - Kenichi Harada
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan
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2
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Tseng HK, Su YY, Chang TW, Liu HC, Li PJ, Chiang PY, Lin CC. Acceptor-mediated regioselective enzyme catalyzed sialylation: chemoenzymatic synthesis of GAA-7 ganglioside glycan. Chem Commun (Camb) 2021; 57:3468-3471. [PMID: 33688902 DOI: 10.1039/d1cc00653c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Herein, we applied PmST1 (a sialyltransferase) to achieve acceptor-mediated regioselective sialylation (AMRS) on the nonreducing end GalNH2 or GalAz (2-azido-2-deoxy galactose). Thus, C5 and C8-modified sialic acid was efficiently assembled on GalNH2 (or GalAz) to achieve the synthesis of the GAA-7 (one of the echinodermatous gangliosides with higher neuritogenic activity) glycan moiety.
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Affiliation(s)
- Hsin-Kai Tseng
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang Fu Road, Hsinchu 30013, Taiwan.
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Wu YF, Tsai YF, Huang YS, Shih JF. Total Synthesis of the Echinodermatous Ganglioside LLG-3 Possessing the Biological Function of Promoting the Neurite Outgrowth. Org Lett 2020; 22:7491-7495. [PMID: 32965122 DOI: 10.1021/acs.orglett.0c02692] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A total synthesis of echinodermatous ganglioside LLG-3 with neuritogenic activity was accomplished by a convergent strategy. The synthesis of 2-hydroxyethyl 8-O-Me-α-sialoside 2 was started from the phenyl 7,8-di-O-Pico-thiosialoside 5, which can be chemoselectively removed the picoloyl group, and then the methyl group in 8-O-MeNeu5Ac moiety was chemoselectively prepared using TMSCHN2/FeCl3. For preparation of the terminal disialic unit, oxidative amidation was initially utilized by our group to efficiently construct the α(2,11) linkage of 8-O-Me-Neu5Acα(2,11)Neu5Gc. Herein, we also demonstrate that the synthesized ganglioside LLG-3 exhibited the neuritogenic activity toward the primary cortical neurons and that biological activity is superior to that of ganglioside DSG-A.
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Affiliation(s)
- Yu-Fa Wu
- Department of Chemistry, Chung Yuan Christian University, 200 Zhongbei Road, Chung Li District, Taoyuan City 32023, Taiwan
| | - Yow-Fu Tsai
- Department of Chemistry, Chung Yuan Christian University, 200 Zhongbei Road, Chung Li District, Taoyuan City 32023, Taiwan
| | - Yuahn-Sieh Huang
- Department of Biology and Anatomy, National Defense Medical Center, 161 Section 6, Minquan East Road, Neihu District, Taipei City 11490, Taiwan
| | - Jing-Feng Shih
- Department of Chemistry, Chung Yuan Christian University, 200 Zhongbei Road, Chung Li District, Taoyuan City 32023, Taiwan
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Abstract
Sialic acids are cytoprotectors, mainly localized on the surface of cell membranes with multiple and outstanding cell biological functions. The history of their structural analysis, occurrence, and functions is fascinating and described in this review. Reports from different researchers on apparently similar substances from a variety of biological materials led to the identification of a 9-carbon monosaccharide, which in 1957 was designated "sialic acid." The most frequently occurring member of the sialic acid family is N-acetylneuraminic acid, followed by N-glycolylneuraminic acid and O-acetylated derivatives, and up to now over about 80 neuraminic acid derivatives have been described. They appeared first in the animal kingdom, ranging from echinoderms up to higher animals, in many microorganisms, and are also expressed in insects, but are absent in higher plants. Sialic acids are masks and ligands and play as such dual roles in biology. Their involvement in immunology and tumor biology, as well as in hereditary diseases, cannot be underestimated. N-Glycolylneuraminic acid is very special, as this sugar cannot be expressed by humans, but is a xenoantigen with pathogenetic potential. Sialidases (neuraminidases), which liberate sialic acids from cellular compounds, had been known from very early on from studies with influenza viruses. Sialyltransferases, which are responsible for the sialylation of glycans and elongation of polysialic acids, are studied because of their significance in development and, for instance, in cancer. As more information about the functions in health and disease is acquired, the use of sialic acids in the treatment of diseases is also envisaged.
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Affiliation(s)
- Roland Schauer
- Biochemisches Institut, Christian-Albrechts-Universität zu Kiel, Kiel, Germany.
| | - Johannis P Kamerling
- Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands.
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Yamagishi M, Hosoda-Yabe R, Tamai H, Konishi M, Imamura A, Ishida H, Yabe T, Ando H, Kiso M. Structure-Activity Relationship Study of the Neuritogenic Potential of the Glycan of Starfish Ganglioside LLG-3 (‡). Mar Drugs 2015; 13:7250-74. [PMID: 26690179 PMCID: PMC4699235 DOI: 10.3390/md13127062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 11/25/2015] [Indexed: 11/27/2022] Open
Abstract
LLG-3 is a ganglioside isolated from the starfish Linchia laevigata. To clarify the structure-activity relationship of the glycan of LLG-3 toward rat pheochromocytoma PC12 cells in the presence of nerve growth factor, a series of mono- to tetrasaccharide glycan derivatives were chemically synthesized and evaluated in vitro. The methyl group at C8 of the terminal sialic acid residue was crucial for neuritogenic activity, and the terminal trisaccharide moiety was the minimum active motif. Furthermore, the trisaccharide also stimulated neuritogenesis in human neuroblastoma SH-SY5Y cells via mitogen-activated protein kinase (MAPK) signaling. Phosphorylation of extracellular signal-regulated kinase (ERK) 1/2 was rapidly induced by adding 1 or 10 nM of the trisaccharide. The ratio of phosphorylated ERK to ERK reached a maximum 5 min after stimulation, and then decreased gradually. However, the trisaccharide did not induce significant Akt phosphorylation. These effects were abolished by pretreatment with the MAPK inhibitor U0126, which inhibits enzymes MEK1 and MEK2. In addition, U0126 inhibited the phosphorylation of ERK 1/2 in response to the trisaccharide dose-dependently. Therefore, we concluded that the trisaccharide promotes neurite extension in SH-SY5Y cells via MAPK/ERK signaling, not Akt signaling.
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Affiliation(s)
- Megumi Yamagishi
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
| | - Ritsuko Hosoda-Yabe
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.
- Department of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
| | - Hideki Tamai
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.
| | - Miku Konishi
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.
| | - Akihiro Imamura
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
| | - Hideharu Ishida
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
| | - Tomio Yabe
- Department of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
| | - Hiromune Ando
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.
| | - Makoto Kiso
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.
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6
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Armstrong Z, Withers SG. Synthesis of Glycans and Glycopolymers Through Engineered Enzymes. Biopolymers 2013; 99:666-74. [DOI: 10.1002/bip.22335] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 06/19/2013] [Accepted: 06/19/2013] [Indexed: 01/16/2023]
Affiliation(s)
- Zachary Armstrong
- Genome Science and Technology Program; University of British Columbia; Canada
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7
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Tamai H, Ando H, Ishida H, Kiso M. First synthesis of a pentasaccharide moiety of ganglioside GAA-7 containing unusually modified sialic acids through the use of N-Troc-sialic acid derivative as a key unit. Org Lett 2012; 14:6342-5. [PMID: 23228133 DOI: 10.1021/ol303122w] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The pentasaccharide part of the potent neuritogenic ganglioside GAA-7 has been synthesized for the first time. The unique branched terminus constituting partially modified sialic acids and N-acetylgalactosamine was successfully established by stereoselective double-sialylation using 8-O-methyl-N-Troc-sialic acid as a donor. The final 4 + 1 coupling reaction provided a high yield of pentasaccharide, which was deprotected to deliver the target molecule.
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Affiliation(s)
- Hideki Tamai
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
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8
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Rich JR, Withers SG. A Chemoenzymatic Total Synthesis of the Neurogenic Starfish Ganglioside LLG‐3 Using an Engineered and Evolved Synthase. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204578] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jamie R. Rich
- Department of Chemistry, University of British Columbia, Vancouver, B.C., V6T 1Z1 (Canada)
| | - Stephen G. Withers
- Department of Chemistry, University of British Columbia, Vancouver, B.C., V6T 1Z1 (Canada)
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9
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Rich JR, Withers SG. A Chemoenzymatic Total Synthesis of the Neurogenic Starfish Ganglioside LLG‐3 Using an Engineered and Evolved Synthase. Angew Chem Int Ed Engl 2012; 51:8640-3. [DOI: 10.1002/anie.201204578] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Jamie R. Rich
- Department of Chemistry, University of British Columbia, Vancouver, B.C., V6T 1Z1 (Canada)
| | - Stephen G. Withers
- Department of Chemistry, University of British Columbia, Vancouver, B.C., V6T 1Z1 (Canada)
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10
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11
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Dong G, Xu T, Yang B, Lin X, Zhou X, Yang X, Liu Y. Chemical constituents and bioactivities of starfish. Chem Biodivers 2011; 8:740-91. [PMID: 21560228 DOI: 10.1002/cbdv.200900344] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Starfish have been the research topic in many chemical and pharmacological laboratories due to their complex secondary metabolites and diverse bioactivities. The aim of this review is to provide an up-to-date review on the chemistry and bioactivity of compounds isolated from all kinds of starfish to illustrate the chemodiversity and biological significance of these constituents, along with their geographical distribution where it is discernible.
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Affiliation(s)
- Guang Dong
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, P. R. China
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12
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Tamai H, Ando H, Tanaka HN, Hosoda-Yabe R, Yabe T, Ishida H, Kiso M. The Total Synthesis of the Neurogenic Ganglioside LLG-3 Isolated from the StarfishLinckia laevigata. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006035] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Tamai H, Ando H, Tanaka HN, Hosoda-Yabe R, Yabe T, Ishida H, Kiso M. The total synthesis of the neurogenic ganglioside LLG-3 isolated from the starfish Linckia laevigata. Angew Chem Int Ed Engl 2011; 50:2330-3. [PMID: 21351347 DOI: 10.1002/anie.201006035] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 12/10/2010] [Indexed: 11/10/2022]
Affiliation(s)
- Hideki Tamai
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
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14
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Hanashima S, Sato KI, Naito Y, Takematsu H, Kozutsumi Y, Ito Y, Yamaguchi Y. Synthesis and binding analysis of unique AG2 pentasaccharide to human Siglec-2 using NMR techniques. Bioorg Med Chem 2010; 18:3720-5. [DOI: 10.1016/j.bmc.2010.03.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Revised: 03/19/2010] [Accepted: 03/25/2010] [Indexed: 10/19/2022]
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15
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Miyamoto T, Higuchi R. Glycosphingolipids of Echinoderms-The Chemical Diversity of Carbohydrate and Ceramide Structure-. J SYN ORG CHEM JPN 2010. [DOI: 10.5059/yukigoseikyokaishi.68.501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
A neuritegenic ganglioside from sea cucumber, HLG-2 (see figure), has been synthesized for the first time. The unique tandem of sialic acids, Neu5Gc-alpha(2,4)-NeuAc, was established by the combination of a reactive N-Troc sialyl donor and a 1,5-lactamized sialyl acceptor. The ceramide counterpart was assembled in a stereoselective manner. Direct connection of the trisaccharide and the ceramide successfully afforded a precursor of HLG-2, which was converted to ganglioside HLG-2 in pure form.A first synthesis of the neuritegenic ganglioside HLG-2, which was identified in extracts of the sea cucumber Holothuria leucospilota, is described. The characteristic sequence of the trisaccharide part, alpha-N-glycolylsialyl-(2,4)-alpha-N-acetylsialyl-(2,6)-glucoside, was efficiently assembled by coupling of a highly active N-2,2,2-trichloroethoxycarbonyl (Troc)-protected sialyl donor and a 1,5-lactamized sialyl acceptor with high stereoselectivity. The corresponding trisaccharyl imidate donor was directly glycosidated with the primary hydroxyl group of the ceramide part, producing protected HLG-2 in relatively high yield, global deprotection of which furnished ganglioside HLG-2 in highly pure form.
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Affiliation(s)
- Yuki Iwayama
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu, Japan
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18
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Inagaki M, Saito T, Miyamoto T, Higuchi R. Isolation and structure of hematoside-type ganglioside from the starfish Linckia laevigata. Chem Pharm Bull (Tokyo) 2009; 57:204-6. [PMID: 19182413 DOI: 10.1248/cpb.57.204] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A hematoside-type ganglioside, LLG-1 (1), has been obtained from the polar lipid fraction of the chloroform/methanol extract of the starfish Linckia laevigata. The structure of the ganglioside has been determined on the basis of chemical and spectroscopic evidence as 1-O-[N-glycolyl-alpha-D-neuraminosyl-(2-->3)-beta-D-galactopyranosyl-(1-->4)-beta-D-glucopyranosyl]-ceramide. The ceramide moiety was composed of heterogeneous 2-hydroxy fatty acid and phytosphingosine units. This is the first report on the isolation and structure elucidation of naked hematoside-type ganglioside from echinoderms.
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Affiliation(s)
- Masanori Inagaki
- Faculty of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
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19
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Hanashima S, Ishikawa D, Akai S, Sato KI. Synthesis of the starfish ganglioside LLG-3 tetrasaccharide. Carbohydr Res 2009; 344:747-52. [PMID: 19281969 DOI: 10.1016/j.carres.2009.02.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 01/30/2009] [Accepted: 02/04/2009] [Indexed: 12/01/2022]
Abstract
The first synthesis of the ganglioside LLG-3 tetrasaccharide, which has attractive biological activities as well as a unique structure, is described. A C8-methoxy decorated sialic acid building block was initially prepared and a glycolic acid moiety was then introduced by sialylation. Amide condensation between the sialyl glycolic acid and an amino group at C5 on the sialyllactoside unit afforded the fully protected LLG-3 tetrasaccharide. Finally, the desired tetrasaccharide part of LLG-3 was obtained after careful global deprotection. [structure: see text].
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Affiliation(s)
- Shinya Hanashima
- Material and Life Chemistry, Faculty of Engineering, Kanagawa University, Yokohama, Kanagawa, Japan
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20
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Inagaki M. [Structure and biological activity of glycosphingolipids from starfish and feather stars]. YAKUGAKU ZASSHI 2008; 128:1187-94. [PMID: 18670184 DOI: 10.1248/yakushi.128.1187] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glycosphingolipids (GSLs) are contained in a various cell membranes and have recently been implicated in many physiologic functions. They are classified based on their sugar moieties into ceramides, cerebrosides, sulfatides, ceramide-oligohexosides, globosides, and gangliosides. A number of GSLs have been obtained from marine invertebrates such as echinoderms, poriferans, and mollusks and have unique biological activities. During the course of our search for biologically active GSLs from echinoderms, we conducted the isolation and structural elucidation of GSLs from starfish and feather stars and found numerous GSLs, some of which have unique structures. In particular, gangliosides from feather stars were unique in that the sialic acids bind to inositol-phosphoceramide. We also found that the GSLs from starfish and feather stars possess neuritogenic activity toward the rat pheochromocytoma cell line PC12, antihyperglycemic effects against type 2 diabetic BKS. Cg-m+/+Leprdb/J (db/db) mice, and antiosteoporosis effects toward the osteoporosis model mice (OVX mice). These biological activities are thought to be related to dementia, osteoporosis, and diabetes, which are becoming social problems, and are expected to become the seeds of preventive or therapeutic drugs for these illness.
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21
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Kaneko M, Yamada K, Miyamoto T, Inagaki M, Higuchi R. Neuritogenic Activity of Gangliosides from Echinoderms and Their Structure-Activity Relationship. Chem Pharm Bull (Tokyo) 2007; 55:462-3. [PMID: 17329892 DOI: 10.1248/cpb.55.462] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effects of the gangliosides isolated from echinoderms on the neuritogenesis of a rat pheochromocytoma cell line (PC-12 cells) in the presence of nerve growth factor were investigated. The results show that they displayed neuritogenic activity. Based on the observed results, a structure-activity relationship has been established.
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Affiliation(s)
- Masafumi Kaneko
- Faculty of Pharmaceutical Sciences, Kyushu University, Maidashi, Fukuoka, Japan
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22
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Hoda K, Ikeda Y, Kawasaki H, Yamada K, Higuchi R, Shibata O. Mode of interaction of ganglioside Langmuir monolayer originated from echinoderms: Three binary systems of ganglioside/DPPC, ganglioside/DMPE, and ganglioside/cholesterol. Colloids Surf B Biointerfaces 2006; 52:57-75. [PMID: 16930959 DOI: 10.1016/j.colsurfb.2006.07.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2006] [Revised: 06/20/2006] [Accepted: 07/11/2006] [Indexed: 10/24/2022]
Abstract
The surface pressure (pi)-area (A), the surface potential (DeltaV)-A, and the dipole moment (mu( perpendicular))-A isotherms were obtained for monolayers made from a ganglioside originated from echinoderms [Diadema setosum ganglioside (DSG-1)], dipalmitoylphosphatidylcholine (DPPC), dimyristoylphosphatidylethanolamine (DMPE), cholesterol (Ch), and their combinations. Monolayers spread on several different substrates were investigated at the air/water interface by the Wilhelmy method, ionizing electrode method, fluorescence microscopy (FM) and atomic force microscopy (AFM). Surface potentials (DeltaV) of pure components were analyzed using the three-layer model proposed by Demchak and Fort [R.J. Demchak, T. Fort, J. Colloid Interface Sci. 46 (1974) 191-202]. The new finding was that DSG-1 was stable and showed a liquid-expanded film and that its monolayer behavior of DeltaV was sensitive for the change of the NaCl concentration in the subphase. Moreover, the miscibility of DSG-1 and three major lipids in the two-component monolayers was examined by plotting the variation of the molecular area and the surface potential as a function of the DSG-1 molar fraction (X(DSG-1)), using the additivity rule. From the A-X(DSG-1) and DeltaV(m)-X(DSG-1) plots, partial molecular surface area (PMA) and apparent partial molecular surface potential (APSP) were determined at the discrete surface pressure. The PMA and APSP with the mole fraction were extensively discussed for the miscible system. The miscibility was also investigated from the two-dimensional phase diagrams. Furthermore, a regular surface mixture, for which the Joos equation was used for the analysis of the collapse pressure of two-component monolayers, allowed calculation of the interaction parameter (xi) and the interaction energy (-Deltavarepsilon) between them. The observations using fluorescence microscopy and AFM image also provide us the miscibility in the monolayer state.
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Affiliation(s)
- Kazuki Hoda
- Division of Biointerfacial Science, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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23
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Inagaki M, Miyamoto T, Isobe R, Higuchi R. Biologically active glycosides from asteroidea, 43. Isolation and structure of a new neuritogenic-active ganglioside molecular species from the starfish Linckia laevigata. Chem Pharm Bull (Tokyo) 2006; 53:1551-4. [PMID: 16327187 DOI: 10.1248/cpb.53.1551] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A ganglioside molecular species, LLG-5 (1), has been obtained from the water soluble lipid fraction of the CHCl3/MeOH extract of the starfish Linckia laevigata. On the basis of chemical and spectroscopic findings, the structure of 1 has been elucidated. Negative ion FAB-MS provided important information both on the structure of the sugar moiety and on the molecular mass of the ganglioside. 1 is a new ganglioside molecular species possessing a 2-->11 linked linear-type trisialosyl moiety. Moreover, 1 exhibited neuritogenic activity in rat pheochromocytoma PC-12 cells in the presence of nerve growth factor.
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Affiliation(s)
- Masanori Inagaki
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi, Fukuoka, Japan
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Maruta T, Saito T, Inagaki M, Shibata O, Higuchi R. Biologically active glycosides from Asteroidea, 41. Isolation and structure determination of glucocerebrosides from the starfish Linckia laevigata. Chem Pharm Bull (Tokyo) 2006; 53:1255-8. [PMID: 16204980 DOI: 10.1248/cpb.53.1255] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new glucocerebroside, linckiacerebroside A (1) and a known glucocerebroside S-2a-3 (2), have been isolated from the cerebroside molecular species obtained from the less polar fraction of the CHCl3/MeOH extract of the starfish Linckia laevigata, together with three pseudo homogeneous glucocerebroside, 3, 4, and 5. The structures of these cerebrosides were determined on the basis of chemical and spectroscopic evidence.
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Affiliation(s)
- Tomoki Maruta
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
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Maruta T, Hoda K, Inagaki M, Higuchi R, Shibata O. Langmuir monolayers of cerebroside originated from Linckia laevigata: binary systems of cerebrosides and phospholipid. Colloids Surf B Biointerfaces 2005; 44:123-42. [PMID: 16051475 DOI: 10.1016/j.colsurfb.2005.06.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2005] [Revised: 05/31/2005] [Accepted: 06/18/2005] [Indexed: 11/21/2022]
Abstract
The surface pressure (pi)-area (A), the surface potential (DeltaV)-A and the dipole moment (mu( perpendicular))-A isotherms were obtained for six cerebrosides of LLC-2, LLC-2-1, LLC-2-8, LLC-2-10, LLC-2-12, and LLC-2-15, which were isolated from Linckia laevigata, and two-component monolayers of two different cerebrosides (LLC-2 and LLC-2-8) with phospholipid of dipalmitoylphosphatidylcholine (DPPC) on a subphase of 0.15 M sodium chloride solution as a function of cerebroside compositions in the two-component systems by employing the Wilhelmy method, the ionizing electrode method, and the fluorescence microscopy. The new finding was that LLC-2 showed a stable and liquid expanded type film. Four of them (LLC-2-8, -10, -12, and -15) had the phase transition from the liquid-expanded (LE) to the liquid-condensed (LC) states at 298.2 K. The apparent molar quantity changes (Deltas(gamma), Deltah(gamma), and Deltau(gamma)) on their phase transition on 0.15M at 298.2 K were calculated. The miscibility of cerebroside and phospholipid in the two-component monolayers was examined by plotting the variation of the molecular area and the surface potential as a function of the cerebroside molar fraction (X(cerebroside)), using the additivity rule. From the A-X(cerebroside) and DeltaV(m)-X(phospholipid) plots, a partial molecular surface area (PMA) and an apparent partial molecular surface potential (APSP) were determined at the discrete surface pressure. The PMA and APSP with the mole fraction were extensively discussed for the miscible systems. Judging from the two-dimensional phase diagrams, these were found to be one type, a positive azeotropic type; all the cerebrosides were miscible with DPPC. Furthermore, assuming a regular surface mixture, the Joos equation for the analysis of the collapse pressure of two-component monolayers allowed calculation of the interaction parameter (xi) and the interaction energy (-Deltavarepsilon) between the cerebrosides and DPPC. The miscibility of cerebroside and phospholipid components in the monolayer state was also supported by fluorescence microscopy.
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Affiliation(s)
- Tomoki Maruta
- Division of Biointerfacial Science, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Kawatake S, Inagaki M, Isobe R, Miyamoto T, Higuchi R. Isolation and structure of a GD3-Type ganglioside molecular species possessing neuritogenic activity from the starfish Luidia maculata. Chem Pharm Bull (Tokyo) 2005; 52:1002-4. [PMID: 15305002 DOI: 10.1248/cpb.52.1002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A GD3-type ganglioside molecular species, LMG-4 (1), has been obtained from the polar lipid fraction of the chloroform/methanol extract of the starfish Luidia maculata. The structure of this ganglioside has been determined on the basis of chemical and spectroscopic evidence to be 1-O-[(N-acetyl-alpha-D-neuraminosyl)-(2-->8)-(N-acetyl-alpha-D-neuraminosyl)-(2-->3)-beta-D-galactopyranosyl-(1-->4)-beta-D-glucopyranosyl]-ceramide. The ceramide moiety was composed of heterogeneous 2-hydroxy fatty acid and phytosphingosine units. This is the first report on the isolation and structure elucidation of GD3-type ganglioside from echinoderms. Moreover, 1 exhibited neuritogenic activity toward the rat pheochromocytoma PC12 cells in the presence of nerve growth factor.
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Affiliation(s)
- Satoshi Kawatake
- Faculty of Pharmaceutical Sciences, Kyushu University, Fukouka, Japan
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Yamada K. [Chemo-pharmaceutical studies on the glycosphingolipid constituents from echinoderm, sea cucumbers, as the medicinal materials]. YAKUGAKU ZASSHI 2002; 122:1133-43. [PMID: 12510390 DOI: 10.1248/yakushi.122.1133] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glycosphingolipids (GSLs), together with glycopeptides, are typical constitutents of various cell membranes in a wide variety of organisms. In particular, it is known that GSLs have numerous physiological functions due to variations in the sugar chain, in spite of the very small quantity of constituents. Those are classified into cerebrosides, sulfatides, ceramide oligohexosides, globosides, and gangliosides based on the constituent sugars. Gangliosides, sialic acid-containing GSLs, are especially enriched in the brain and nervous tissues and are involved in the regulation of many cellular events. Recently, a number of GSLs have been isolated from marine invertebrates such as echinoderms, poriferans, and mollusks. We have also been researching biologically active GSLs from echinoderms to elucidate the structure-function relationships of GSLs and to develop novel medicinal resources. This review summarizes the structures and biological activities of GSLs from sea cucumbers. This study showed that the characteristics of GSLs and structure-activity relationships had neuritogenic activity toward the rat pheochromocytoma cell line PC12. That is, most of the cerebroside constituents of the sea cucumber are same glucocerebrosides as in other animals, except for some constituents, while the ganglioside constituents were unique in that a sialic acid directly binds to the glucose of cerebroside, they are mutually connected in tandem, and some are located in the internal parts of the sugar chain. It also became apparent that sialic acid is indispensable for the neuritogenic activities.
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Affiliation(s)
- Koji Yamada
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
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Kawatake S, Inagaki M, Isobe R, Miyamoto T, Higuchi R. Isolation and structure of monomethylated GM3-type ganglioside molecular species from the starfish Luidia maculata. Chem Pharm Bull (Tokyo) 2002; 50:1386-9. [PMID: 12372870 DOI: 10.1248/cpb.50.1386] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two monomethylated GM(3)-Type ganglioside molecular species, 1 and 2, have been obtained from the polar lipid fraction of the chloroform/methanol extract of the starfish Luidia maculata. The structures of these gangliosides have been determined on the basis of chemical and spectroscopic evidence as 1-O-[8-O-methyl-(N-acetyl-alpha-D-neuraminosyl)-(2-->3)-beta-D-galactopyranosyl-(1-->4)-beta-D-glucopyranosyl]-ceramide (1) and 1-O-[8-O-methyl-(N-glycolyl-alpha-D-neuraminosyl)-(2-->3)-beta-D-galactopyranosyl-(1-->4)-beta-D-glucopyranosyl]-ceramide (2). The ceramide moieties were composed of heterogeneous unsubstituted fatty acid, 2-hydroxy fatty acid, sphingosine and phytosphingosine units. Compound 1, designated as LMG-3, represents new ganglioside molecular species. Compound 2 was a known ganglioside molecular species.
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Affiliation(s)
- Satoshi Kawatake
- Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
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