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Wutthiwong N, Suthiphasilp V, Pintatum A, Suwannarach N, Kumla J, Lumyong S, Maneerat T, Charoensup R, Cheenpracha S, Limtharakul T, Pyne SG, Laphookhieo S. Daldiniaeschsone A, a Rare Tricyclic Polyketide Having a Chromone Unit Fused to a δ-Lactone and Its Symmetrical Biphenyl Dimer, Daldiniaeschsone B, from an Endophytic Fungus Daldinia eschscholtzii SDBR-CMUNKC745. J Fungi (Basel) 2021; 7:358. [PMID: 34063266 PMCID: PMC8147462 DOI: 10.3390/jof7050358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 11/17/2022] Open
Abstract
Daldiniaeschsone A (1), a rare tricyclic polyketide having a chromone unit fused to a δ-lactone and its symmetrical 6,6'-biphenyl dimer, daldiniaeschsone B (2), together with three known compounds (3-5), were isolated from a plant-derived endophytic fungus, Daldinia eschscholtzii SDBR-CMUNKC745. Their structures were elucidated by extensive 1D and 2D NMR spectroscopic data and HRESIMS. All compounds showed α-glucosidase inhibitory activity with IC50 values ranging from 0.16-0.85 mM and compound 1 was the best α-glucosidase inhibitory activity (IC50 = 0.16 mM).
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Affiliation(s)
- Natnicha Wutthiwong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Virayu Suthiphasilp
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
| | - Aknarin Pintatum
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
| | - Nakarin Suwannarach
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jaturong Kumla
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Saisamorn Lumyong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand
| | - Tharakorn Maneerat
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
| | - Rawiwan Charoensup
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
- School of Integrative Medicine, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | | | - Thunwadee Limtharakul
- Department of Chemistry, Faculty of Science and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Stephen G. Pyne
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia;
| | - Surat Laphookhieo
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
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Gu G, Cai G, Wang Y, Li L, Bai J, Zhang T, Cen S, Zhang D, Yu L. Daldispones A and B, two new cyclopentenones from Daldinia sp. CPCC 400770. J Antibiot (Tokyo) 2020; 74:215-218. [PMID: 33173167 DOI: 10.1038/s41429-020-00384-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 10/13/2020] [Indexed: 11/09/2022]
Abstract
Two new cyclopentenone derivatives, daldispones A (1) and B (2) were isolated from the fungus Daldinia sp. CPCC 400770. Their structures and absolute configurations were elucidated by extensive spectroscopic analyses and calculated electronic circular dichroism (ECD). Compounds 1 and 2 exhibited significant anti-influenza A virus activities with IC50 values of 16.0 and 7.4 μM, respectively. Compound 2 showed moderate antibacterial activities against Staphylococcus aureus, Enterococcus faecalis and Bacillus cereus.
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Affiliation(s)
- Guowei Gu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Guowei Cai
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yujia Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Li Li
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jinglin Bai
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tao Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shan Cen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dewu Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Liyan Yu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Su LH, Geng CA, Li TZ, Huang XY, Ma YB, Zhang XM, Wu G, Yang ZL, Chen JJ. Spiroseoflosterol, a Rearranged Ergostane-Steroid from the Fruiting Bodies of Butyriboletus roseoflavus. JOURNAL OF NATURAL PRODUCTS 2020; 83:1706-1710. [PMID: 32323991 DOI: 10.1021/acs.jnatprod.9b01282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Spiroseoflosterol (1), a 7(8→9)-abeo-ergostane steroid with a unique spiro[4.5]decan-6-one system, was isolated from the fruiting bodies of Butyriboletus roseoflavus. Its structure was determined by interpretation of comprehensive spectroscopic, X-ray, and computational data. A plausible biogenetic pathway for spiroseoflosterol (1) was postulated based on a key semipinacol rearrangement. Compound 1 was cytotoxic to HepG2 and Huh7/S (sorafenib-resistant Huh7) with IC50 values of 9.1 and 6.2 μM, respectively.
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Affiliation(s)
- Li-Hua Su
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Chang-An Geng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, People's Republic of China
| | - Tian-Ze Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, People's Republic of China
| | - Xiao-Yan Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, People's Republic of China
| | - Yun-Bao Ma
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, People's Republic of China
| | - Xue-Mei Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, People's Republic of China
| | - Gang Wu
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Zhu-Liang Yang
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Ji-Jun Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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Epitypification and neotypification: guidelines with appropriate and inappropriate examples. FUNGAL DIVERS 2014. [DOI: 10.1007/s13225-014-0315-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Stadler M, Læssøe T, Fournier J, Decock C, Schmieschek B, Tichy HV, Peršoh D. A polyphasic taxonomy of Daldinia (Xylariaceae). Stud Mycol 2014; 77:1-143. [PMID: 24790283 PMCID: PMC3953824 DOI: 10.3114/sim0016] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
For a monograph based on a polythetic concept, several thousands of herbarium specimens, and several hundreds of freshly collected and cultured specimens of Daldinia and allied Xylariaceae, originating from around the world, were studied for morphological traits, including by SEM, and chemically by HPLC profiles using UV-visible and mass spectrometric detection. Emphasis was given to tropical material, and importantly, ancient specimens, including as many types as possible, were tracked and studied to review earlier taxonomic concepts. An epitype of D. eschscholtzii was selected as representative of the morphochemotype that is most widely distributed in the tropics. Six new species of Daldinia from the tropics and the southern Hemisphere are described. Daldinia asphalatum is resurrected, and D. cudonia is regarded as its synonym. In addition, the following binomials are epi-, iso-, neo- and/or lectotypified: Daldinia asphalatum, D. caldariorum, D. clavata, D. cuprea, D. durissima, D. eschscholtzii, D. grandis, D. loculata, and D. vernicosa. Annellosporium and Versiomyces are regarded as synonyms of Daldinia. Many new synonymies in Daldinia are proposed, and some previously published names are rejected. In total, 47 taxa in Daldinia are recognised and a key is provided. Their biogeography, chorology, and ecology, as well as the importance of their secondary metabolites, are also discussed. The previous definition of the genus is emended. The species concept is based mainly on morphological and other phenotype-derived characters because, despite diligent search, no molecular data or cultures of several of the accepted species could be obtained. Daldinia is segregated into five major groups, based on phenotypic characteristics. Some unnamed but aberrant specimens were not found in good condition and are therefore not formally described as new species. However, they are illustrated in detail in a hope that this will facilitate the discovery of fresh material in future. A preliminary molecular phylogeny based on 5.8S/ITS nrDNA including numerous representatives of all hitherto described taxa for which cultures are extant, was found basically in agreement with the above mentioned segregation of the genus, based on morphological and chemotaxonomic evidence. In the rDNA based phylogenetic tree, Daldinia appears clearly distinct from members of the genera Annulohypoxylon and Hypoxylon; nevertheless, representatives of small genera of predominantly tropical origin (Entonaema, Phylacia, Ruwenzoria, Rhopalostroma, Thamnomyces) appear to have evolved from daldinioid ancestors and are nested inside the Daldinia clade. Interestingly, these findings correlate with chemotaxonomic characters to a great extent, especially regarding the distribution of marker metabolites in their mycelial cultures. Hence, the current study revealed for the first time that fungal secondary metabolite profiles can have taxonomic value beyond the species rank and even coincide with phylogenetic data. TAXONOMIC NOVELTIES Daldinia andina sp. nov., D. australis sp. nov., D. hausknechtii sp. nov., D. rehmii sp. nov., D. starbaeckii sp. nov., D. theissenii sp. nov., D. cahuchosa comb. nov., D. nemorosa comb. nov.
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Affiliation(s)
- Marc Stadler
- Helmholtz Centre for Infection Research, Dept. Microbial Drugs, Inhoffenstrasse 7, D-38124 Braunschweig, Germany
| | - Thomas Læssøe
- University of Copenhagen, Department of Biology/Natural History Museum of Denmark, Universitetsparken 15, DK-2100 Copenhagen Ø, Denmark
| | | | - Cony Decock
- Mycothèque de l’Université catholique de Louvain (MUCL, BCCM™), Earth and Life Institute - Microbiology (ELIM), Université catholique de Louvain, Croix du Sud 2 bte L7.05.06,B-1348, Louvain-la-Neuve, Belgium
| | | | - Hans-Volker Tichy
- Bayer Pharma AG, Product Supply, API - Supply Center Elberfeld Quality Unit - QCB-Mikrobiologie I, 42096 Wuppertal, Germany
| | - Derek Peršoh
- University of Bayreuth, Dept. Mycology, Universitätsstraße 30, D-95540 Bayreuth, Germany
- Present address: Ruhr-Universität Bochum, AG Geobotanik, Universitätsstraße 150, D-44780 Bochum, Germany
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Ikewaki N, Yamada A, Inoko H. Depolymerization of Actin Filament by Cytochalasin E Induces Interleukin-8 Production and Up-Regulates CD54 in the HeLa Epithelial Cell Line. Microbiol Immunol 2013; 47:775-83. [PMID: 14605444 DOI: 10.1111/j.1348-0421.2003.tb03435.x] [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: 11/28/2022]
Abstract
We previously reported that the depolymerization of actin filament by cytochalasin E enhances low affinity Fcepsilon receptor II (CD23) expression on the human monocyte-like cell line, U937 (J. Clin. Immunol. 20: 235, 2000). In this study, we found that cytochalasin E strongly induces interleukin-8 through an epithelial cell line, HeLa, in dose- and time-dependent manners as assessed by enzyme-linked immunoassay and reverse transcription-polymerase chain reaction techniques. In addition, interleukin-8 production in the HeLa cells cultured with cytochalasin E was blocked in the presence of protein kinase C inhibitors, Go6976 and H-7. On the other hand, it was found that CD54 (intercellular adhesion molecule-1; ICAM-1) expression on the HeLa cells and the secretion of soluble CD54 were significantly up-regulated after culturing with cytochalasin E, and that these up-regulations of CD54 were also suppressed by Go6976. Taken together, these findings indicate that cytochalasin E activates protein kinase C under the depolymerization of actin filament, leading to the induction of interleukin-8 production and the up-regulation of CD54 in HeLa cells.
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Affiliation(s)
- Nobunao Ikewaki
- Division of Immunology, Kyushu University of Health and Welfare, Faculty of Health and Science, Nobeoka, Miyazaki 882-8508, Japan
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Wen L, Wei Q, Chen G, Cai J, She Z. Chemical constituents from the mangrove endophytic fungus Sporothrix sp. Chem Nat Compd 2013. [DOI: 10.1007/s10600-013-0534-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Sreekanth D, Arunasree MK, Roy KR, Chandramohan Reddy T, Reddy GV, Reddanna P. Betanin a betacyanin pigment purified from fruits of Opuntia ficus-indica induces apoptosis in human chronic myeloid leukemia Cell line-K562. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2007; 14:739-46. [PMID: 17482444 DOI: 10.1016/j.phymed.2007.03.017] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Betalains are water-soluble nitrogenous vacuolar pigments present in flowers and fruits of many caryophyllales with potent antioxidant properties. In the present study the antiproliferative effects of betanin, a principle betacyanin pigment, isolated from the fruits of Opuntia ficus-indica, was evaluated on human chronic myeloid leukemia cell line (K562). The results show dose and time dependent decrease in the proliferation of K562 cells treated with betanin with an IC(50) of 40 microM. Further studies involving scanning and transmission electron microscopy revealed the apoptotic characteristics such as chromatin condensation, cell shrinkage and membrane blebbing. Agarose electrophoresis of genomic DNA of cells treated with betanin showed fragmentation pattern typical for apoptotic cells. Flow cytometric analysis of cells treated with 40 microM betanin showed 28.4% of cells in sub G0/G1 phase. Betanin treatment to the cells also induced the release of cytochrome c into the cytosol, poly (ADP) ribose polymerase (PARP) cleavage, down regulation Bcl-2, and reduction in the membrane potentials. Confocal microscopic studies on the cells treated with betanin suggest the entry of betanin into the cells. These studies thus demonstrate that betanin induces apoptosis in K562 cells through the intrinsic pathway and is mediated by the release of cytochrome c from mitochondria into the cytosol, and PARP cleavage. The antiproliferative effects of betanin add further value to the nutritional characteristics of the fruits of O. ficus-indica.
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Stadler M, Quang DN, Tomita A, Hashimoto T, Asakawa Y. Changes in secondary metabolism during stromatal ontogeny of Hypoxylon fragiforme. ACTA ACUST UNITED AC 2006; 110:811-20. [PMID: 16876700 DOI: 10.1016/j.mycres.2006.03.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2006] [Accepted: 03/23/2006] [Indexed: 10/24/2022]
Abstract
Stromata of Hypoxylon fragiforme were studied during the vegetation period by hplc profiling, revealing changes in the composition during stromatal development. Cytochalasin H and two new cytochalasins named fragiformins A-B were identified as major constituents of the young, maturing stromata, whereas mature, ascogenous material yielded large amounts of mitorubrin-type azaphilones. The above compounds, further cytochalasins from Xylariaceae and other fungi, and additional azaphilones of the mitorubrin type were assayed for their nematicidal effects against Caenorhabditis elegans and their antimicrobial activities against Bacillus subtilis, Yarrowia lipolytica, and various filamentous fungi. The results confirmed data in the literature on broad-spectrum non-selective activities of azaphilones and cytochalasins in biological systems. Most interestingly, laboratory cultures of the above Hypoxylon spp. mainly produced dihydroisocoumarin derivatives and were found devoid of mitorubrins and cytochalasins. These rather drastic changes in the secondary metabolism of H. fragiforme and the above biological activities are discussed in relation to the possible biological functions of secondary metabolites (extrolites) in the Hypoxyloideae.
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Affiliation(s)
- Marc Stadler
- Intermed Discovery GmbH, BioMedizin Zentrum Dortmund, Otto-Hahn-Str. 15, D-44227 Dortmund, Germany.
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Quang DN, Harinantenaina L, Nishizawa T, Hashimoto T, Kohchi C, Soma GI, Asakawa Y. Inhibitory activity of nitric oxide production in RAW 264.7 cells of daldinals A–C from the fungus Daldinia childiae and other metabolites isolated from inedible mushrooms. J Nat Med 2006. [DOI: 10.1007/s11418-006-0010-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Quang DN, Hashimoto T, Asakawa Y. Inedible mushrooms: a good source of biologically active substances. CHEM REC 2006; 6:79-99. [PMID: 16565983 DOI: 10.1002/tcr.20074] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In the course of our investigation on biologically active substances from inedible mushrooms in Japan, Germany, and Vietnam, we studied the chemical constituents of 22 species belonging to five families: Scutigeraceae, Polyporaceae, Xylariaceae, Thelephoraceae, and Paxillaceae. Various types of chemical substances were purified and characterized based on the modern spectroscopic methods and also on chemical reactions. These metabolites have shown a broad activity in many biological systems, such as antimicrobial, nematicidal, inhibition of NO production, anti-human immunodeficiency virus, tumor necrosis factor-alpha, and antioxidant activities. These isolated metabolites did not only show interesting activities, but also are employed as chemical markers supported for chemosystematics of these families. This review paper deals with the chemical constituents of 22 species, their biological activities, and also a discussion on chemosystematics.
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Affiliation(s)
- Dang Ngoc Quang
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan
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12
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Quang DN, Hashimoto T, Nukada M, Yamamoto I, Tanaka M, Takaoka S, Asakawa Y. Two novel ravenelones from the edible mushroom Pulveroboletus ravenelii. Chem Pharm Bull (Tokyo) 2003; 51:330-2. [PMID: 12612423 DOI: 10.1248/cpb.51.330] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two novel butenolides, isoravenelone (1) and ravenelone (2), and a large amount of a known compound, vulpinic acid (3), were isolated from the methanolic extract of the Japanese fungus Pulveroboletus ravenelii (Boletales). These structures were elucidated by two dimensional (2D) NMR, MS, IR and UV spectra, and X-ray crystallographic analysis.
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Affiliation(s)
- Dang Ngoc Quang
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
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13
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Mohamad SB, Nagasawa H, Uto Y, Hori H. Tumor cell alpha-N-acetylgalactosaminidase activity and its involvement in GcMAF-related macrophage activation. Comp Biochem Physiol A Mol Integr Physiol 2002; 132:1-8. [PMID: 12062184 DOI: 10.1016/s1095-6433(01)00522-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Alpha-N-acetyl galactosaminidase (alpha-NaGalase) has been reported to accumulate in serum of cancer patients and be responsible for deglycosylation of Gc protein, which is a precursor of GcMAF-mediated macrophage activation cascade, finally leading to immunosuppression in advanced cancer patients. We studied the biochemical characterization of alpha-NaGalase from several human tumor cell lines. We also examined its effect on the potency of GcMAF to activate mouse peritoneal macrophage to produce superoxide in GcMAF-mediated macrophage activation cascade. The specific activity of alpha-NaGalases from human colon tumor cell line HCT116, human hepatoma cell line HepG2, and normal human liver cells (Chang liver cell line) were evaluated using two types of substrates; GalNAc-alpha-PNP (exo-type substrate) and Gal-beta-GalNAc-alpha-PNP (endo-type substrate). Tumor-derived alpha-NaGalase having higher activity than normal alpha-NaGalase, had higher substrate specificity to the exo-type substrate than to the endo-type substrate, and still maintained its activity at pH 7. GcMAF enhance superoxide production in mouse macrophage, and pre-treatment of GcMAF with tumor cell lysate reduce the activity. We conclude that tumor-derived alpha-NaGalase is different in biochemical characterization compared to normal alpha-NaGalase from normal Chang liver cells. In addition, tumor cell-derived alpha-NaGalase decreases the potency of GcMAF on macrophage activation.
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Affiliation(s)
- Saharuddin B Mohamad
- Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, Tokushima 770-8506, Japan
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Nukata M, Hashimoto T, Yamamoto I, Iwasaki N, Tanaka M, Asakawa Y. Neogrifolin derivatives possessing anti-oxidative activity from the mushroom Albatrellus ovinus. PHYTOCHEMISTRY 2002; 59:731-737. [PMID: 11909630 DOI: 10.1016/s0031-9422(02)00050-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Three neogrifolin derivatives, 3-hydroxyneogrifolin, 1-formylneogrifolin and 1-formyl-3-hydroxyneogrifolin along with grifolin and neogrifolin were isolated from the Japanese mushroom Albatrellus ovinus belonging to Scutigeraceae. Their structures were established by a combination of two-dimensional NMR spectroscopic analyses and by chemical synthesis. 3-Hydroxyneogrifolin and 1-formyl-3-hydroxy-neogrifolin showed more potent antioxidative activity properties than either alpha-tocopherol or BHA.
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Affiliation(s)
- Makiko Nukata
- Faculty of Food Culture, Kurashiki Sakuyo University, 710-0290, Kurashiki, Japan
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Ikewaki N, Tamauchi H, Yamada A, Aoki M, Yamamoto R, Sawada A, Inoko H. A microfilament formation inhibitor, cytochalasin strongly enhances the low-affinity Fc epsilon receptor II (CD23) expression on the human monocyte-like cell line, U937. J Clin Immunol 2000; 20:424-33. [PMID: 11202232 DOI: 10.1023/a:1026403615037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Enhancement of the low-affinity Fc epsilon receptor (CD23) expression by cytochalasin was analyzed on the human monocytelike cell line, U937. The CD23 expression on the U937 cells was enhanced at 24 hr after culture with cytochalasin B, D, or E, especially cytochalasin E having the most remarkable effect on it at the low concentration. This enhanced expression was found to be associated with a concomitant increase of a CD23 (about 45-kDa) protein on the U937 cells as assessed by Western blotting analysis. On the other hand, CD11a, CD18, CD31, CD49d, or CD54 was not markedly enhanced on the U937 cells by culture with cytochalasin E, although the mean fluorescence intensities (MFIs) of CD11a, CD18, and CD54 on U937 was partially up-regulated. Cell growth of U937 cultured with cytochalasin E was completely suppressed for 72 hr, but cell viability was sufficiently maintained (more than 95%). Soluble-formed CD23 (sCD23) also was released from the U937 cells at 24 to 72 hr after culture with cytochalasin E. In addition, the protein tyrosine kinase activity was detected in the U937 cells cultured with cytochalasin E for 24 hr using the enzyme immunoassay. Enhancement of the CD23 expression on the U937 cells at 24 to 72 hr cultured with cytochalasin E was sufficiently blocked by protein tyrosine kinase inhibitors herbimycin A and genistein, and a protein synthesis inhibitor, cychloheximide. On the other hand, protein kinase C inhibitors such as H-7 and H-8 had no effect on this CD23 expression. These results suggest that a mechanism underlying enhancement of the CD23 expression on the U937 cells cultured with cytochalasin E is mediated through tyrosine phosphorylation and protein synthesis.
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Affiliation(s)
- N Ikewaki
- Division of Immunology, Kyushu University of Health and Welfare, Faculty of Health and Science, Nobeoka-city, Miyazaki, Japan
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