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Chang CW, Chang HS, Cheng MJ, Liu TW, Hsieh SY, Yuan GF, Chen IS. Inhibitory effects of constituents of an endophytic fungus Hypoxylon investiens on nitric oxide and interleukin-6 production in RAW264.7 macrophages. Chem Biodivers 2015; 11:949-61. [PMID: 24934680 DOI: 10.1002/cbdv.201300364] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Indexed: 11/11/2022]
Abstract
Three new compounds, hypoxyloamide (1), 8-methoxynaphthalene-1,7-diol (2), and hypoxylonol (3), together with seven compounds isolated from nature for the first time, investiamide (4), hypoxypropanamide (5), hypoxylonol A (6), investienol (7), 2-heptylfuran (8), (3S)-5-methyl-8-O-methylmellein (9), (4R)-O-methylsclerone (10), along with 19 known compounds, 11-29, were isolated from the culture broth of Hypoxylon investiens BCRC 10F0115, a fungal endophyte residing in the stems of an endemic Formosan plant Litsea akoensis var. chitouchiaoensis. The structures of the new compounds were established by spectroscopic methods, including UV, IR, HR-ESI-MS, and extensive 1D- and 2D-NMR techniques. Of these isolates, 2, 8-methoxynaphthalen-1-ol (15), and 1,8-dimethoxynaphthalene (16) showed nitric oxide (NO) inhibitory activity with IC50 values of 11.8±0.9, 17.8±1.1, and 13.3±0.5 μM, respectively, stronger than the positive control quercetin (IC50 36.8±1.3 μM). Compounds 2, 15, and 16 also showed interleukin-6 (IL-6) inhibitory activity with IC50 values of 9.2±1.7, 18.0±0.6, and 2.0±0.1 μM, stronger than the positive control quercetin (IC50 31.3±1.6 μM). To the best of our knowledge, this is the first report on guaiane sesquiterpene metabolites, 3, 6, and 7, from the genus Hypoxylon.
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Chang CW, Chang HS, Cheng MJ, Peng CF, Chen IS. Identification of Five New Minor Constituents from the Whole Plant ofAmischotolype hispida. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201400179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Chang HS, Shin SW, Lee TH, Bae DJ, Park JS, Kim YH, Uh ST, Choi BW, Kim MK, Choi IS, Park BL, Shin HD, Park CS. Development of a genetic marker set to diagnose aspirin-exacerbated respiratory disease in a genome-wide association study. THE PHARMACOGENOMICS JOURNAL 2015; 15:316-21. [PMID: 25707394 DOI: 10.1038/tpj.2014.78] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 09/28/2014] [Accepted: 11/05/2014] [Indexed: 12/27/2022]
Abstract
We developed a genetic marker set of single nucleotide polymorphisms (SNPs) by summing risk scores of 14 SNPs showing a significant association with aspirin-exacerbated respiratory disease (AERD) from our previous 660 W genome-wide association data. The summed scores were higher in the AERD than in the aspirin-tolerant asthma (ATA) group (P=8.58 × 10(-37)), and were correlated with the percent decrease in forced expiratory volume in 1 s after aspirin challenge (r(2)=0.150, P=5.84 × 10(-30)). The area under the curve of the scores for AERD in the receiver operating characteristic curve was 0.821. The best cutoff value of the summed risk scores was 1.01328 (P=1.38 × 10(-32)). The sensitivity and specificity of the best scores were 64.7% and 85.0%, respectively, with 42.1% positive and 93.4% negative predictive values. The summed risk score may be used as a genetic marker with good discriminative power for distinguishing AERD from ATA.
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Chang CI, Li YC, Yang CS, Chao CY, Li YJ, Chang HS, Huang CJ, Kuo CC, Kuo YH. Two New Labdane-Type Diterpene Acids from the Wood of Cunninghamia konishii. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201400138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Takahashi M, Suzuki N, Ishikawa T, Huang HY, Chang HS, Chen IS. Unprecedented 8,9'-neolignans: enantioselective synthesis of possible stereoisomers for structural determination. JOURNAL OF NATURAL PRODUCTS 2014; 77:2585-2589. [PMID: 25427159 DOI: 10.1021/np500641a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
(+)-Wutaienin (3) and its C-7 methyl ether (4), isolated from Zanthoxylum wutaiense, were found to be unprecedented 8,9'-neolignans containing an (S)-2-(1,1-dimethyl-1-hydroxymethyl)-7-methoxydihydrobenzofuran skeleton. Wutaienin (3) was present in the plant as an inseparable 1:1 mixture of the (7,8)-syn-diastereoisomers. The diastereoisomeric mixture was characterized by comparison with four possible diastereoisomers, which were enantioselectively synthesized from (S)-5-bromo-(1,1-dimethyl-1-hydroxymethyl)-7-methoxydihydrobenzofuran using Evans' oxazolidinone-assisted asymmetric aldol condensation to install the chiral centers at the C-7 and C-8 positions.
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Lee TH, Chen CC, Chen JJ, Liao HF, Chang HS, Sung PJ, Tseng MH, Wang SY, Ko HH, Kuo YH. New and Cytotoxic Components from Antrodia camphorata. Molecules 2014; 19:21378-85. [PMID: 25532837 PMCID: PMC6271605 DOI: 10.3390/molecules191221378] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 12/10/2014] [Accepted: 12/11/2014] [Indexed: 01/19/2023] Open
Abstract
The solid-state cultured products of Antrodia camphorata as health foods has been blooming for the past few decades in Taiwan. In continuing our studies on the chemical constituents of the solid-state cultured products of this fungus, 6-methoxy-4-methyl-2,3-(methylenedioxy)phenol (1) and 4,4'-(ethane-1,2-diyl)bis(2,3,6-trimethoxyphenol)(2) together with 2,3,6-trimethoxy-4-methylphenol (3), 1(10→6)abeo-ergosta-5,7,9,22-tetraen-3α-ol (4), citreoanthrasteroid B (5) and dankasterones A (6) and B (7) were purified by a series of column chromatography. Their structures were elucidated by spectral data analysis. For bioactivity assay, compounds 4–7 showed significant cytotoxicity toward murine colorectal CT26 and human leukemia K562 cancer cell lines with IC50 values ranging from 6.7 to 15.3 µM and from 12.5 to 23.1 µM, respectively.
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Hou YL, Chang HS, Wang HC, Wang SY, Chen TY, Lin CH, Chen IS. Sassarandainol: a new neolignan and anti-inflammatory constituents from the stem ofSassafras randaiense. Nat Prod Res 2014; 29:827-32. [DOI: 10.1080/14786419.2014.988713] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Fan NW, Chang HS, Cheng MJ, Hsieh SY, Liu TW, Yuan GF, Chen IS. Secondary Metabolites from the Endophytic FungusXylaria cubensis. Helv Chim Acta 2014. [DOI: 10.1002/hlca.201400091] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Cheng MJ, Cheng YC, Hsieh MT, Chen IS, Tseng M, Yuan GF, Chang HS. Chemical Constituents of Metabolites Produced by the Actinomycete Acrocarpospora punica. Chem Nat Compd 2014. [DOI: 10.1007/s10600-014-1034-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mizukami K, Yabuki A, Endoh D, Chang HS, Lee KW, Nakayama M, Kushida K, Kohyama M, Lee JI, Yamato O. Investigation of parallel and simultaneous selection for collie eye anomaly and ivermectin toxicosis. Vet Rec 2014; 175:174. [PMID: 24939474 DOI: 10.1136/vr.102015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Chang CI, Li YC, Chao CY, Wang SY, Chang HS, Chao LK, Yang CS, Kuo YH. Two new labdane-type diterpenes from the wood of Cunninghamia konishii. Nat Prod Commun 2014; 9:1127-1128. [PMID: 25233588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
Phytochemical investigation of the methanol extract of the wood of Cunninghamia konishii resulted in the isolation of two new acidic labdane-type diterpenoids, 12(S)-hydroxy-15,16-epoxylabda-8(17),13-dien-19-oic acid (1) and 12(S)-hydroxy-15,16-epoxylabda-8(17),13-dien-18-oic acid (2), along with one known labdane-type diterpene, 7,13E-labdadien-15-ol (3). Their structures were determined by analysis of spectroscopic data and comparison with the data of known analogues.
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Chang CI, Li YC, Chao CY, Wang SY, Chang HS, Chao LK, Yang CS, Kuo YH. Two New Labdane-type Diterpenes from the Wood of Cunninghamia konishii. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Phytochemical investigation of the methanol extract of the wood of Cunninghamia konishii resulted in the isolation of two new acidic labdane-type diterpenoids, 12( S)-hydroxy-15,16-epoxylabda-8(17),13-dien-19-oic acid (1) and 12( S)-hydroxy-15,16-epoxylabda-8(17),13-dien-18-oic acid (2), along with one known labdane-type diterpene, 7,13 E-labdadien-15-ol (3). Their structures were determined by analysis of spectroscopic data and comparison with the data of known analogues.
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Ting YC, Ko HH, Wang HC, Peng CF, Chang HS, Hsieh PC, Chen IS. Biological evaluation of secondary metabolites from the roots of Myrica adenophora. PHYTOCHEMISTRY 2014; 103:89-98. [PMID: 24810013 DOI: 10.1016/j.phytochem.2014.04.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 01/04/2014] [Accepted: 04/08/2014] [Indexed: 06/03/2023]
Abstract
Bioassay-guided fractionation of the roots of Myrica adenophora led to isolation of 24 known compounds and hitherto unknown compounds, including three A-type proanthocyanidins [adenodimerins A-C], two esters of sucrose [myricadenins A and B ], and the phenolic glycoside 6'-O-galloyl orbicularin. Spectroscopic analyses were used to determine their structures. Adenodimerin A, myricananin C, and myricetin showed strong 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities, with SC50 values of 7.9, 16.3, and 15.9 μM, respectively. Adenodimerin A, myricanone, myricananin C, (-)-myricanol, myricanol 11-O-β-D-glucopyranoside, and myricetin showed stronger 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) radical scavenging activities than the positive control, with SC50 values of 7.5, 19.6, 12.0, 22.3, 19.6, and 15.6 μM, respectively. 5-Deoxymyricanone, porson, 12-hydroxymyricanone (-)-myricanol, and (+)-galeon exhibited anti-tubercular activity against Mycobacterium tuberculosis H37Rv in vitro and MICs values of 25.8, 40.0, 35.8, 30.0, and 15.0 μg/mL, respectively. Myricadenin A, myricanone, myricananin C, and (-)-myricanol exhibited anti-inflammatory activities in the iNOS assay with EC50 values of 18.1, 1.00, 13.0, and 7.5 μM, respectively.
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Tung CW, Lin YC, Chang HS, Wang CC, Chen IS, Jheng JL, Li JH. TIPdb-3D: the three-dimensional structure database of phytochemicals from Taiwan indigenous plants. DATABASE-THE JOURNAL OF BIOLOGICAL DATABASES AND CURATION 2014; 2014:bau055. [PMID: 24930145 PMCID: PMC4057645 DOI: 10.1093/database/bau055] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The rich indigenous and endemic plants in Taiwan serve as a resourceful bank for biologically active phytochemicals. Based on our TIPdb database curating bioactive phytochemicals from Taiwan indigenous plants, this study presents a three-dimensional (3D) chemical structure database named TIPdb-3D to support the discovery of novel pharmacologically active compounds. The Merck Molecular Force Field (MMFF94) was used to generate 3D structures of phytochemicals in TIPdb. The 3D structures could facilitate the analysis of 3D quantitative structure–activity relationship, the exploration of chemical space and the identification of potential pharmacologically active compounds using protein–ligand docking. Database URL: http://cwtung.kmu.edu.tw/tipdb.
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Chen S, Cheng MJ, Wu CC, Peng CF, Huang HY, Chang HS, Wang CJ, Chen IS. Three New Phenylpropanoids from the Roots ofPiper taiwanenseand Their Inhibitory Activities on Platelet Aggregation andMycobacterium tuberculosis. Chem Biodivers 2014; 11:792-9. [DOI: 10.1002/cbdv.201300208] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Indexed: 11/06/2022]
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Wu WL, Huang YD, Hsu KE, Wang YH, Huang HH, Hsiung WC, Chen SM, Chang HS, Chu CP, Chung YJ, Huang YT. A health risk assessment of reclaimed municipal wastewater for industrial and miscellaneous use. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2014; 70:750-756. [PMID: 25116508 DOI: 10.2166/wst.2014.291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The study evaluated the safety of reclaimed water using health risk assessment and biotoxicity tests. The reclaimed water was produced from reverse osmosis and used in industrial and miscellaneous purposes. The health risk assessment was conducted based on the concentrations of detectable pollutants in reclaimed water in a hypothetical scenario. The estimated carcinogenic and non-carcinogenic risks are lower than the generally accepted level. Biotoxicity evaluation included three genotoxicity tests, a chronic toxicity test using medaka fishes, and a subchronic toxicity test using mice. The reclaimed water is not genetically toxic, and does not cause significant chronic effects on these model organisms. These results confirm the safety of using reclaimed water from municipal wastewater treatment plants.
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Chan SH, Leu WJ, Hsu LC, Chang HS, Hwang TL, Chen IS, Chen CS, Guh JH. Reevesioside F induces potent and efficient anti-proliferative and apoptotic activities through Na⁺/K⁺-ATPase α3 subunit-involved mitochondrial stress and amplification of caspase cascades. Biochem Pharmacol 2013; 86:1564-75. [PMID: 24099795 DOI: 10.1016/j.bcp.2013.09.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/26/2013] [Accepted: 09/27/2013] [Indexed: 11/28/2022]
Abstract
Reevesioside F, isolated from Reevesia formosana, induced anti-proliferative activity that was highly correlated with the expression of Na⁺/K⁺-ATPase α₃ subunit in several cell lines, including human leukemia HL-60 and Jurkat cells, and some other cell lines. Knockdown of α₃ subunit significantly inhibited cell apoptosis suggesting a crucial role of the α₃ subunit. Reevesioside F induced a rapid down-regulation of survivin protein, followed by release of cytochrome c from mitochondria and loss of mitochondrial membrane potential (ΔΨm). Further examination demonstrated the mitochondrial damage in leukemic cells through Mcl-1 down-regulation, Noxa up-regulation and an increase of the formation of truncated Bid, tBim and a 23-kDa cleaved Bcl-2 fragment. Furthermore, reevesioside F induced an increase of mitochondria-associated acetyl α-tubulin that may also contribute to apoptosis. The caspase cascade was profoundly activated by reevesioside F. Notably, the specific caspase-3 inhibitor z-DEVD-fmk significantly blunted reevesioside F-induced loss of ΔΨm and apoptosis, suggesting that caspase-3 activation may further amplify mitochondrial damage and apoptotic signaling cascade. In spite of being a cardiac glycoside, reevesioside F did not increase the intracellular Ca²⁺ levels. Moreover, CGP-37157 which blocked Na⁺/Ca²⁺ exchanger on plasma membrane and mitochondria did not modify reevesioside F-mediated effect. In summary, the data suggest that reevesioside F induces apoptosis through the down-regulation of survivin and Mcl-1, and the formation of pro-apoptotic fragments from Bcl-2 family members. The loss of ΔΨm and mitochondrial damage are responsible for the activation of caspases. Moreover, the amplification of caspase-3-mediated signaling pathway contributes largely to the execution of apoptosis in leukemic cells.
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Lee TH, Chen YC, Lee CK, Chang HS, Kuo CC, Chao CY, Lin JJ, Lo LC, Kuo YH. Aconitamide, a Novel Alkaloid from the Roots of Aconitum carmichaeli. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aconitum carmichaeli Debx. is a traditional Chinese medicine commonly employed for curing a wide array of diseases in East Asia. From the ethyl acetate soluble fraction of the methanolic extracts of A carmichaeli, a new alkaloid, aconitamide (1), along with eighteen known compounds 2–19 were isolated by column chromatography and identified on the basis of spectroscopic analyses. The anti-telomerase activity of 1–19 was also assessed, but no activity was found, even at a concentration higher than 30 μM.
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Chang CI, Li YC, Kuo CC, Chao CY, Chang HS, Wu JH, Wang SY, Kuo YH. Two New Lignans from the Wood of Cunninghamia konishii. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Two new lignans, (8 S,8′ S)-4,3′-dihydroxy-3,4′,5′-trimethoxylignan-9′,9-olide (1) and trans–4′,8,8′-trihydroxy-3′-methoxy-3,4-methylenedioxylignan-9′,9-olide (2), were isolated from the wood of Cunninghamia konishii. Their structures were determined by analysis of spectroscopic data.
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Lin CH, Chang HS, Liao HR, Chen IS, Tsai IL. Triterpenoids from the roots of Rhaphiolepis indica var. tashiroi and their anti-inflammatory activity. Int J Mol Sci 2013; 14:8890-8. [PMID: 23615476 PMCID: PMC3676762 DOI: 10.3390/ijms14058890] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 03/22/2013] [Accepted: 03/26/2013] [Indexed: 11/30/2022] Open
Abstract
Two new triterpenoids, 2α,3β-dihydroxyolean-11,13(18)-dien-19β,28-olide (1) and 3β,5β-dihydroxyglutinol (2), together with eight known compounds (3-10) were isolated from the roots of Rhaphiolepis indica var. tashiroi (Rosaceae). The structures of 1-10 were determined by spectroscopic techniques. Among these isolates, 2α,3β-dihydroxyolean-13(18)-en-28-oic acid (9) exhibited inhibitory effect on N-formyl-methionyl-leucyl-phenylalanine (fMLP)-induced superoxide production, with an IC50 value of 16.50 μM.
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Wu MD, Cheng MJ, Chen IS, Su YS, Hsieh SY, Chang HS, Chang CW, Yuan GF. Phytochemical Investigation ofAnnulohypoxylon ilanense, an Endophytic Fungus Derived fromCinnamomumSpecies. Chem Biodivers 2013; 10:493-505. [DOI: 10.1002/cbdv.201200418] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Indexed: 11/11/2022]
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Chang HS, Chiang MY, Hsu HY, Yang CW, Lin CH, Lee SJ, Chen IS. Cytotoxic cardenolide glycosides from the root of Reevesia formosana. PHYTOCHEMISTRY 2013; 87:86-95. [PMID: 23313131 DOI: 10.1016/j.phytochem.2012.11.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 10/01/2012] [Accepted: 11/30/2012] [Indexed: 06/01/2023]
Abstract
Bioassay-guided fractionation of the root tissue of Reevesia formosana led to isolation of 13 cardenolide glycosides, reevesiosides A-I and epi-reevesiosides F-I. Their structures were determined by means of spectroscopic analysis and single-crystal X-ray diffraction was performed using reevesioside A. Reevesioside A, reevesioside F, and epi-reevesioside F displayed especially potent cytotoxicity against the MCF-7 and NCI-H460 cancer cell lines, with IC(50) values of 63±2 and 19±1, 72±8 and 20±0, and 34±6 and 10±1 nM, respectively. Identification of the sugar constituents and unusual 18,20-epoxide cardenolide glycosides are described herein. Cardiac glycosides were previously unknown in the Sterculiaceae family.
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Tseng M, Su YS, Cheng MJ, Liu TW, Chen IS, Wu MD, Chang HS, Yuan GF. Chemical Constituents from a Soil-Derived Actinomycete,Actinomadura miaoliensisBCRC 16873, and Their Inhibitory Activities on Lipopolysaccharide-Induced Tumor Necrosis Factor Production. Chem Biodivers 2013; 10:303-12. [DOI: 10.1002/cbdv.201200242] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Indexed: 11/10/2022]
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Yu CC, Wu PJ, Hsu JL, Ho YF, Hsu LC, Chang YJ, Chang HS, Chen IS, Guh JH. Ardisianone, a natural benzoquinone, efficiently induces apoptosis in human hormone-refractory prostate cancers through mitochondrial damage stress and survivin downregulation. Prostate 2013; 73:133-45. [PMID: 22674285 DOI: 10.1002/pros.22548] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Accepted: 05/14/2012] [Indexed: 11/08/2022]
Abstract
BACKGROUND Increasing evidence suggests that mitochondria play a central role in regulating cell apoptosis. Survivin, an inhibitor of apoptosis protein (IAP) family member, mediates resistance to cancer chemotherapy particularly in prostate cancers. Therefore, development of anticancer agents targeting mitochondria and survivin is a potential strategy. METHOD Cell proliferation was examined by sulforhodamine B, CFSE staining, and clonogenic assays. Mitochondrial membrane potential (ΔΨ(m) ) and reactive oxygen species (ROS) were detected by flow cytometric analysis. Protein expression was detected by Western blot. RNA levels were examined by reverse transcription polymerase chain reaction assay. Overexpression of constitutively active Akt was also used in this study. RESULTS Ardisianone, a natural benzoquinone derivative, displayed anti-proliferative and apoptotic activities against human hormone-refractory prostate cancer cells (HRPC), PC-3, and DU-145. Ardisianone dramatically induced mitochondrial damage, identified by downregulation of Bcl-2 family proteins, ROS production, and loss of ΔΨ(m) . Ardisianone also inhibited Akt and mTOR/p70S6K pathways and induced a fast downregulation of survivin, leading to activation of mitochondria-involved caspase cascades. Overexpression of constitutively active Akt partly rescued ardisianone-mediated apoptotic signaling cascades. Furthermore, a long-term treatment of ardisianone caused an increase of endoplasmic reticulum (ER) stress, upregulation of cIAP1 and cIAP2, and apoptosis-inducing factor (AIF)-mediated caspase-independent apoptosis. CONCLUSIONS The data suggest that the ardisianone induces apoptosis in human prostate cancers through mitochondrial damage stress, leading to the inhibition of mTOR/p70S6K pathway, downregulation of Bcl-2 family members, degradation of survivin, and activation of caspase cascades. The data provide evidence supporting that ardisianone is a potential anticancer agent against HRPCs.
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Huang YT, Chang HS, Wang GJ, Lin CH, Chen IS. Secondary metabolites from the roots of Beilschmiedia tsangii and their anti-inflammatory activities. Int J Mol Sci 2012. [PMID: 23208379 PMCID: PMC3546699 DOI: 10.3390/ijms131216430] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Four new endiandric acid analogues, tsangibeilin C (1), tsangibeilin D (2), tricyclotsangibeilin (3) and endiandric acid M (4), one new lignan, beilschminol B (5) and two new sesquiterpenes, (+)-5-hydroxybarbatenal (6) and (4R,5R)-4,5-dihydroxycaryophyll-8(13)-ene (7), together with four known compounds (8-11), were isolated from the roots of Beilschmiedia tsangii (Lauraceae). The structures of 1-7 were determined by spectroscopic techniques. Among the isolates, endiandric acid M (4) exhibited moderate iNOS inhibitory activity, with an IC(50) value of 31.70 μM.
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