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Dibwe DF, Kitayama E, Oba S, Takeishi N, Chiba H, Hui SP. Inhibition of Lipid Accumulation and Oxidation in Hepatocytes by Bioactive Bean Extracts. Antioxidants (Basel) 2024; 13:513. [PMID: 38790618 DOI: 10.3390/antiox13050513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/13/2024] [Accepted: 04/14/2024] [Indexed: 05/26/2024] Open
Abstract
During our search for natural resources that can inhibit lipid droplet accumulation (LDA) and potentially prevent metabolic dysfunction-associated fatty liver disease (MAFLD) and its progressive stages, such as metabolic dysfunction-associated steatohepatitis (MASH), eight bean extracts (BE1-BE8) were tested for their ability to inhibit lipid accumulation and oxidation in hepatocytes. Substantial inhibitory effects on LDA with bean extracts (BEs) BE2, BE4, BE5, and BE8 were demonstrated. An advanced lipidomic approach was used to quantify the accumulation and inhibition of intracellular triacylglycerol (TAG) and its oxidized species, TAG hydroperoxide (TGOOH), in hepatocytes under fatty acid-loading conditions. The results show that the antioxidants BE2 and BE8 are potential candidates for regulating TAG and TGOOH accumulation in fatty acid-induced lipid droplets (LDs). This study suggests that bean-based foods inhibit LDs formation by decreasing intracellular lipids and lipid hydroperoxides in the hepatocytes. The metabolic profiling of BEs revealed that BE2 and BE8 contained polyphenolic compounds. These may be potential resources for the development of functional foods and drug discovery targeting MAFLD/MASH.
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Affiliation(s)
- Dya Fita Dibwe
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan
| | - Emi Kitayama
- Graduate School of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan
| | - Saki Oba
- Graduate School of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan
| | - Nire Takeishi
- Graduate School of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan
| | - Hitoshi Chiba
- Department of Nutrition, Sapporo University of Health Sciences, Nakanuma Nishi-4-3-1-15, Higashi-Ku, Sapporo 007-0894, Japan
| | - Shu-Ping Hui
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan
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Dibwe DF, Takeishi N, Oba S, Sakurai A, Sakurai T, Tsukui T, Chiba H, Hui SP. Identification of a β-Carboline Alkaloid from Chemoselectively Derived Vanilla Bean Extract and Its Prevention of Lipid Droplet Accumulation in Human Hepatocytes (HepG2). Molecules 2023; 28:8024. [PMID: 38138514 PMCID: PMC10745329 DOI: 10.3390/molecules28248024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/02/2023] [Accepted: 12/03/2023] [Indexed: 12/24/2023] Open
Abstract
Targeting bioactive compounds to prevent lipid droplet accumulation in the liver, we explored an antioxidative extract from vanilla bean (Vainilla planifolia) after chemo-selective derivatization through heating and acid modification. The chemical analysis of vanilla bean extract through chemoselective derivatization resulted in the identification of sixteen compounds (34-50) using LC-MS/MS analysis. A β-carboline alkaloid with a piperidine C-ring and a vanillin moiety at C-1 (34) was identified by molecular networking and diagnostic fragmentation filtering approaches. β-carboline alkaloid 34 exhibited significant inhibitory activity of lipid droplet accumulation (LDAI) in oleic acid-loaded hepatocellular carcinoma HepG2 cells. The LDAI activity was associated with both activation of lipolysis and suppression of lipogenesis in the cells. The study indicates that crude plant extracts, following chemoselective derivatization, may contain bioactive compounds that could be beneficial in preventing hepatosteatosis and could serve as a source of lead compounds for drug development. This approach may be useful to investigate other mixtures of natural products and food resources.
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Affiliation(s)
- Dya Fita Dibwe
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (D.F.D.); (T.S.)
| | - Nire Takeishi
- Graduate School of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (N.T.); (S.O.); (A.S.)
| | - Saki Oba
- Graduate School of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (N.T.); (S.O.); (A.S.)
| | - Akiko Sakurai
- Graduate School of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (N.T.); (S.O.); (A.S.)
| | - Toshihiro Sakurai
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (D.F.D.); (T.S.)
| | - Takayuki Tsukui
- Department of Nutrition, Sapporo University of Health Sciences, Nakanuma Nishi-4-3-1-15, Higashi-Ku, Sapporo 007-0894, Japan; (T.T.); (H.C.)
| | - Hitoshi Chiba
- Department of Nutrition, Sapporo University of Health Sciences, Nakanuma Nishi-4-3-1-15, Higashi-Ku, Sapporo 007-0894, Japan; (T.T.); (H.C.)
| | - Shu-Ping Hui
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (D.F.D.); (T.S.)
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Haedar JR, Uria AR, Lallo S, Dibwe DF, Wakimoto T. New Theonellapeptolides from Indonesian Marine Sponge Theonella swinhoei as Anti-austerity Agents. Mar Drugs 2022; 20:md20110661. [PMID: 36354984 PMCID: PMC9697519 DOI: 10.3390/md20110661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/17/2022] [Accepted: 10/19/2022] [Indexed: 11/29/2022] Open
Abstract
We reported three new members of the theonellapeptolide family from theonellapeptolide II series, namely theonellapeptolides IIb (1), IIa (2), IIc (3), and three known members—IId (4), IIe (5), and Id (6)—from Kodingarengan marine sponge Theonella swinhoei collected in Makassar, Indonesia. The structures of tridecadepsipeptides 1–3, including the absolute configurations of their amino acids, were determined by the integrated NMR and tandem MS analyses followed by Marfey’s analysis. To the best of our knowledge, 1 and 2 are the first theonellapeptolide-type compounds to have a valine residue with D configuration at residue position 6. The isolated theonellapeptolide-type compounds 1–6 showed selective cytotoxic activity against human pancreatic MIA PaCa-2 cancer cells in a nutrient-deprived medium. Among them, the most potent preferential cytotoxicity was observed in new theonellapeptolide IIc (3) and known IId (4), IIe (5), and Id (6).
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Affiliation(s)
- Jabal Rahmat Haedar
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Sapporo 060-0812, Japan
| | - Agustinus Robert Uria
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Sapporo 060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Kita 12, Nishi 6, Sapporo 060-0812, Japan
| | - Subehan Lallo
- Faculty of Pharmacy, Hasanuddin University, JI. Perintis Kemerdekaan Km. 10, Makassar 90245, Indonesia
| | - Dya Fita Dibwe
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan
- Faculty of Sciences, Department of Chemistry, University of Kinshasa, Kinshasa P.O. Box 190 KIN XI, Congo
- Department of Biotechnology and Natural Products, Research Center for Applied Sciences and Technologies, 106 Boulevard 30 Juin, Kinshasa P.O. Box 8401 Kinshasa-1, Congo
- Correspondence: or (D.F.D.); (T.W.)
| | - Toshiyuki Wakimoto
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Sapporo 060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Kita 12, Nishi 6, Sapporo 060-0812, Japan
- Correspondence: or (D.F.D.); (T.W.)
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Phan ND, Omar AM, Sun S, Maneenet J, Dibwe DF, Sato M, Kalauni SK, Toyooka N, Fujii T, Awale S. Abietane diterpenes from Abies spectabilis and their anti-pancreatic cancer activity against the MIA PaCa-2 cell line. Bioorg Med Chem Lett 2022; 66:128723. [PMID: 35395369 DOI: 10.1016/j.bmcl.2022.128723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/22/2022] [Accepted: 04/02/2022] [Indexed: 11/22/2022]
Abstract
An ethanolic extract of the stem of Abies spectabilis exhibited strong cytotoxicity against MIA PaCa-2 human pancreatic cancer cells preferentially under nutrient-deprived conditions. Therefore, phytochemical investigation of this bioactive extract was carried out, and that led the isolation of ten compounds (1-10) including a new abietane-type diterpene (1). The structure of the new compound (1) was elucidated by combined spectroscopic techniques, including HRFABMS, NMR and quantum ECD calculation. All the isolated compounds were evaluated for their efficacy against MIA PaCa-2 human pancreatic cancer cell line by employing an anti-austerity strategy. Among the tested compounds, dehydroabietinol (5) displayed the most potent activity with a PC50 value of 6.6 μM. Dehydroabietinol (5) was also found to retard the MIA PaCa-2 cell migration under normal nutrient-rich conditions displaying its anti-metastatic potential. Investigation on the mechanism suggested that dehydroabietinol (5) is an inhibitor of the key cancer cell survival Akt/mTOR/autophagy signaling pathway.
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Affiliation(s)
- Nguyen Duy Phan
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan; Department of Surgery and Science, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Japan
| | - Ashraf M Omar
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Sijia Sun
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Juthamart Maneenet
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Dya Fita Dibwe
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Mao Sato
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | | | - Naoki Toyooka
- Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan; Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Tsutomu Fujii
- Department of Surgery and Science, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Japan
| | - Suresh Awale
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
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Dibwe DF, Oba S, Takeishi N, Sakurai T, Tsukui T, Chiba H, Hui SP. Food-Derived β-Carboline Alkaloids Ameliorate Lipid Droplet Accumulation in Human Hepatocytes. Pharmaceuticals (Basel) 2022; 15:ph15050578. [PMID: 35631404 PMCID: PMC9147645 DOI: 10.3390/ph15050578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/28/2022] [Accepted: 04/30/2022] [Indexed: 02/06/2023] Open
Abstract
Lipid droplet accumulation (LDA) in hepatocytes is the initial stage of nonalcoholic fatty liver disease (NAFLD). In the search for natural compounds for the prevention of NAFLD, a series of β-carboline alkaloid derivatives, inspired by flazin and its derivative, newly identified in Crassostrea gigas Thunberg. extracts, were examined for LDA inhibition (LDAI) activity in oleic acid–loaded hepatocytes (HepG2). Eight compounds with a piperidine or pyridine C-ring were chemically synthesized (1–8). Among them, compounds 2 and 4 (flazin) with a carboxy group at C-3 and furfuryl alcohol moiety at C-1 showed low cytotoxicity and they exhibited significant LDAI activity. Compound 2 with piperidine C-ring was identified for the first time in C. gigas extract, and ameliorated the lipid accumulation with the LDAI value of 25.4%. Active compounds 2 and 4 significantly inhibited triacylglycerol species accumulation in cells. These compounds upregulated ATGL and downregulated SREBP1, FASN, and SCD1 genes, suggesting that they activated lipolysis and suppressed lipogenesis, respectively. These results suggest that β-carboline alkaloids, especially compounds 2 and 4, might be potentially useful for preventing NAFLD.
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Affiliation(s)
- Dya Fita Dibwe
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (D.F.D.); (T.S.)
| | - Saki Oba
- Graduate School of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (S.O.); (N.T.)
| | - Nire Takeishi
- Graduate School of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (S.O.); (N.T.)
| | - Toshihiro Sakurai
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (D.F.D.); (T.S.)
| | - Takayuki Tsukui
- Department of Nutrition, Sapporo University of Health Sciences, Nakanuma Nishi-4-3-1-15, Higashi-Ku, Sapporo 007-0894, Japan; (T.T.); (H.C.)
| | - Hitoshi Chiba
- Department of Nutrition, Sapporo University of Health Sciences, Nakanuma Nishi-4-3-1-15, Higashi-Ku, Sapporo 007-0894, Japan; (T.T.); (H.C.)
| | - Shu-Ping Hui
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-Ku, Sapporo 060-0812, Japan; (D.F.D.); (T.S.)
- Correspondence: ; Tel./Fax: +81-11-706-3693
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Sun S, Dibwe DF, Kim MJ, Omar AM, Phan ND, Fujino H, Pongterdsak N, Chaithatwatthana K, Phrutivorapongkul A, Awale S. A new anti-austerity agent, 4'-O-methylgrynullarin from Derris scandens induces PANC-1 human pancreatic cancer cell death under nutrition starvation via inhibition of Akt/mTOR pathway. Bioorg Med Chem Lett 2021; 40:127967. [PMID: 33753259 DOI: 10.1016/j.bmcl.2021.127967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/04/2021] [Accepted: 03/11/2021] [Indexed: 10/21/2022]
Abstract
An ethanolic extract of Derris scandens flowers showed potent preferential cytotoxicity against PANC-1 human pancreatic cancer cells under nutrient-deprived condition, with a PC50 value of 0.7 μg/mL. Phytochemical investigation of this active extract led to the isolation of four prenylated isoflavones (1-4) including a new compound named 4'-O-methylgrynullarin (1). The structure elucidation of the new compound was achieved by HRFABMS and NMR spectroscopic analysis. The isolated compounds exhibited potent anti-austerity activity against four different human pancreatic cancer cell lines under nutrient-deprived conditions. The new compound 4'-O-methylgrynullarin (1) was also found to inhibit PANC-1 cell migration and colony formation under nutrient-rich condition. Mechanistically, compound 1 inhibited key survival proteins in the Akt/mTOR signaling pathway. Therefore, 4'-O-methylgrynullarin (1) can be considered as a potential lead compound for the anticancer drug development based on the anti-austerity strategy.
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Affiliation(s)
- Sijia Sun
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Dya Fita Dibwe
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Min Jo Kim
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Ashraf M Omar
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Nguyen Duy Phan
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Haruka Fujino
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | | | | | | | - Suresh Awale
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
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Balakrishnan N, Haribabu J, Dhanabalan AK, Swaminathan S, Sun S, Dibwe DF, Bhuvanesh N, Awale S, Karvembu R. Thiosemicarbazone(s)-anchored water soluble mono- and bimetallic Cu(ii) complexes: enzyme-like activities, biomolecular interactions, anticancer property and real-time live cytotoxicity. Dalton Trans 2021; 49:9411-9424. [PMID: 32589180 DOI: 10.1039/d0dt01309a] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The reactions of CuCl2·2H2O with chromone thiosemicarbazone ligands containing a -H or -CH3 substituent on terminal N yielded monometallic Cu(ii) complexes [Cu(HL1)Cl2] (1) and [Cu(HL2)Cl2] (2), whereas bimetallic Cu(ii) complexes [Cu(μ-Cl)(HL3)]2Cl2 (3), [Cu(μ-Cl)(HL4)]2Cl2 (4) and [Cu(μ-Cl)(L5)]2 (5) were obtained when a -C2H5, -C6H11 or -C6H5 substituent was present, respectively, in the ligands. The complexes were characterized using elemental analyses, UV-Vis, FT-IR, EPR, mass and TGA studies. The structures of neutral monometallic and dicationic bimetallic complexes were confirmed by single crystal X-ray diffraction, and they exhibited a distorted square pyramidal geometry around Cu(ii) ions. The catecholase-mimicking activity of complexes 1-5 was examined spectrophotometrically, and the results revealed that all the complexes except 5 had the ability to oxidize 3,5-di-tert-butylcatechol (3,5-DTBC) to 3,5-di-tert-butylquinone (3,5-DTBQ) under aerobic conditions with moderate turnover numbers. In order to find the possible complex-substrate intermediates, a mass spectrometry study was carried out for complexes 1-4 in the presence of 3,5-DTBC. The phosphatase-like activity of 1-5 was also investigated using 4-nitrophenylphosphate (4-NPP) as a model substrate. All the complexes exhibited excellent phosphatase activity in DMF-H2O medium. The complexes displayed significant biomolecular interactions and antioxidant potential. Complex 3 showed good interaction with apoptotic CASP3 protein, VEGFR2 and PIM-1 kinase receptors as revealed by a molecular docking study. Complexes (3-5) exhibited promising cytotoxicity against HeLa-cervical cancer cells with IC50 values of 2.24 (3), 2.25 (4) and 3.77 (5) μM, respectively, and showed a two-fold higher activity than cisplatin. The active complex 3 showed complete inhibition of colony formation at 10 μM concentration. In addition, the acridine orange (AO)/ethidium bromide (EB) staining and real-time live cell imaging results confirmed that complex 3 induced cell death in HeLa cells.
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Affiliation(s)
- Nithya Balakrishnan
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India.
| | - Jebiti Haribabu
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India. and Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Ananda Krishnan Dhanabalan
- Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600025, India
| | - Srividya Swaminathan
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India.
| | - Sijia Sun
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A & M University, College Station, TX 77842, USA
| | - Suresh Awale
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Ramasamy Karvembu
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India.
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Umeyama L, Hardianti B, Kasahara S, Dibwe DF, Awale S, Yokoyama S, Hayakawa Y. Anti-inflammatory effects of Morus alba Linne bark on the activation of toll-like receptors and imiquimod-induced ear edema in mice. BMC Complement Med Ther 2021; 21:115. [PMID: 33836731 PMCID: PMC8033707 DOI: 10.1186/s12906-021-03291-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 03/29/2021] [Indexed: 02/06/2023] Open
Abstract
Background Morus alba L. bark has been widely used in traditional medicine for treating several inflammatory diseases, such as hypertension, diabetes mellitus and coughing; however, the molecular mechanisms underlying its anti-inflammatory effects are not well understood. Methods We examined the effects of an extract of Morus alba L. bark (MabE) on Toll-like receptor (TLR) ligand-induced activation of RAW264.7 macrophages using a luciferase reporter assay and immunoassays. For the in vivo experiment, we used an imiquimod-induced ear edema model to examine the anti-inflammatory effects of MabE. Results MabE inhibited the TLR ligand-induced activation of NF-κB in RAW264.7 cells without affecting their viability. Consistent with the inhibition of NF-κB activation, MabE also inhibited the production of IL-6 and IL-1β from TLR ligand-treated RAW264.7 cells. In vivo MabE treatment inhibited the ear swelling of IMQ-treated mice, in addition to the mRNA expression of IL-17A, IL-1β and COX-2. The increases in splenic γδT cells in IMQ-treated mice and the production of IL-17A from splenocytes were significantly inhibited by MabE treatment. Conclusion Our study suggests that the anti-inflammatory effects of MabE on the activation of the macrophage cell line RAW246.7 by TLRs and IMQ-induced ear edema are through the inhibition of NF-κB activation and IL-17A-producing γδT cells, respectively. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-021-03291-5.
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Affiliation(s)
- Lin Umeyama
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Besse Hardianti
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.,Sekolah Tinggi Ilmu Farmasi Makassar, Perintis Kemerdekaan Street Km 13.7, Makassar, 90242, Indonesia
| | - Shiori Kasahara
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Suresh Awale
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Satoru Yokoyama
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.,Department of Cancer Cell Biology, Graduate School of Medicine and Pharmaceutical Science, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Yoshihiro Hayakawa
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
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Sun S, Kim MJ, Dibwe DF, Omar AM, Athikomkulchai S, Phrutivorapongkul A, Okada T, Tsuge K, Toyooka N, Awale S. Anti-Austerity Activity of Thai Medicinal Plants: Chemical Constituents and Anti-Pancreatic Cancer Activities of Kaempferia parviflora. Plants (Basel) 2021; 10:plants10020229. [PMID: 33503922 PMCID: PMC7911922 DOI: 10.3390/plants10020229] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/21/2021] [Accepted: 01/21/2021] [Indexed: 11/16/2022]
Abstract
Human pancreatic tumor cells have an intrinsic ability to tolerate nutrition starvation and survive in the hypovascular tumor microenvironment, the phenomenon termed as "austerity". Searching for an agent that inhibits such tolerance to nutrient starvation and kills the pancreatic cancer cells preferentially in nutrient-starvation is a unique anti-austerity strategy in anti-cancer drug discovery. In this strategy, plant extracts and compounds are tested against PANC-1 human pancreatic cancer cell line under the conditions of nutrient-deprived medium (NDM) and nutrient-rich medium (DMEM), to discover the compounds that show selective cytotoxicity in NDM. Screening of twenty-five Thai indigenous medicinal plant extracts for their anti-austerity activity against the PANC-1 human pancreatic cancer cell line in nutrient deprived medium (NDM) resulted in the identification of four active plants, Derris scandens, Boesenbergia pandurata, Citrus hystrix, and Kaempferia parviflora, with PC50 values 0.5-8.9 µg/mL. K. parviflora extract also inhibited PANC-1 cancer cell colony formation. Phytochemical investigation of K. parviflora extract led to the isolation of fourteen compounds, including two polyoxygenated cyclohexanes (1 and 2), eleven flavonoids (3-13), and β-sitosterol (14). Stereochemical assignment of compound 1 was confirmed through X-ray analysis. All isolated compounds were tested for their preferential cytotoxicity against PANC-1 cells. Among them, 5-hydroxy-7-methoxyflavone (3) displayed the most potent activity with a PC50 value of 0.8 µM. Mechanistically, it was found to induce apoptosis in PANC-1 cell death in NDM as evident by caspase cleavage. It was also found to inhibit PANC-1 cancer cell colony formation in DMEM. Therefore, compound 3 can be considered as a potential lead compound for the anticancer drug development based on the anti-austerity strategy.
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Affiliation(s)
- Sijia Sun
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan; (S.S.); (M.J.K.); (D.F.D.); (A.M.O.)
| | - Min Jo Kim
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan; (S.S.); (M.J.K.); (D.F.D.); (A.M.O.)
| | - Dya Fita Dibwe
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan; (S.S.); (M.J.K.); (D.F.D.); (A.M.O.)
| | - Ashraf M. Omar
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan; (S.S.); (M.J.K.); (D.F.D.); (A.M.O.)
| | | | | | - Takuya Okada
- Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan; (T.O.); (K.T.); (N.T.)
| | - Kiyoshi Tsuge
- Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan; (T.O.); (K.T.); (N.T.)
| | - Naoki Toyooka
- Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan; (T.O.); (K.T.); (N.T.)
- Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Suresh Awale
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan; (S.S.); (M.J.K.); (D.F.D.); (A.M.O.)
- Correspondence: ; Tel.: +81-76-434-7640
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10
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Tawila AM, Sun S, Kim MJ, Omar AM, Dibwe DF, Awale S. A Triterpene Lactone from Callistemon citrinus Inhibits the PANC-1 Human Pancreatic Cancer Cells Viability through Suppression of Unfolded Protein Response. Chem Biodivers 2020; 17:e2000495. [PMID: 32865330 DOI: 10.1002/cbdv.202000495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 08/28/2020] [Indexed: 12/22/2022]
Abstract
Human pancreatic tumor cells such as PANC-1 are known for their ability to tolerate nutrient starvation and thrive under the hypovascular tumor microenvironment, a phenomenon termed as 'austerity'. A search of agents that preferentially inhibit the cancer cell viability under the starvation condition without toxicity in the nutrient-rich condition is a promising approach in anticancer drug discovery. In this study, a triterpene lactone, 3β-hydroxy-13,28-epoxyurs-11-en-28-one (ursenolide), isolated from a Callistemon citrinus extract has shown strong preferential cytotoxicity against PANC-1 cells under nutrient starvation with PC50 value of 0.4 μm. Ursenolide-induced rounding of PANC-1 cell morphology followed by rupture of the cell membrane leading to cell death. In a real-time cell migration study, ursenolide was found to inhibit PANC-1 cell migration significantly. Mechanistically, it inhibited GRP78 and GRP94 under the starvation condition suggesting inhibition of unfolded protein response (UPR), an adaptive process of cell survival during starvation. It also inhibited the phosphorylation of the key survival protein Akt and mTOR. Overall results suggested that ursenolide is a potential anticancer agent against pancreatic cancer.
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Affiliation(s)
- Ahmed M Tawila
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Sijia Sun
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Min Jo Kim
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Ashraf M Omar
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Dya Fita Dibwe
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Suresh Awale
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
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11
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Tawila AM, Sun S, Kim MJ, Omar AM, Dibwe DF, Ueda JY, Toyooka N, Awale S. Chemical constituents of Callistemon citrinus from Egypt and their antiausterity activity against PANC-1 human pancreatic cancer cell line. Bioorg Med Chem Lett 2020; 30:127352. [PMID: 32631550 DOI: 10.1016/j.bmcl.2020.127352] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/25/2020] [Accepted: 06/12/2020] [Indexed: 01/03/2023]
Abstract
Human pancreatic cancer is resistant to almost all conventional chemotherapeutic agents. It is known to proliferate aggressively within hypovascular tumor microenvironment by exhibiting remarkable tolerance to nutrition starvation, a phenomenon termed as "austerity". Search for the new agents that eliminate the tolerance of cancer cells to nutrition starvation is a promising strategy in anticancer drug discovery. In this study, two new meroterpenoids named callistrilones O and P (1 and 2) together with eight known triterpenes (3-10) were isolated from the active dichloromethane extract of Callistemon citrinus leaves. The structure elucidation of the new compounds was achieved by HRFABMS, 1D, 2D NMR, and ECD quantum calculations. All isolated compounds were tested for their preferential cytotoxicity against PANC-1 human pancreatic cancer cells. Among these, callistrilone O (1) exhibited the most potent preferential cytotoxicity with a PC50 value of 0.3 nM, the strongest activity with over 2000 times potent than the positive control arctigenin. Callistrilone O (1) induced dramatic alterations in PANC-1 cell morphology leading to cell death under nutrient-deprived conditions. Compound 1 also inhibited PANC-1 cell migration and -PANC-1 colony formation under the nutrient-rich condition.
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Affiliation(s)
- Ahmed M Tawila
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Sijia Sun
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Min Jo Kim
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Ashraf M Omar
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Jun-Ya Ueda
- Faculty of Pharmaceutical Sciences, Hiroshima International University, 5-1-1, Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Naoki Toyooka
- Graduate School of Innovative Life Science, Department of Bio-functional Molecular Engineering, University of Toyama, Toyama 930-8555, Japan; Faculty of Engineering, University of Toyama, Toyama 930-8555, Japan
| | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
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12
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Tawila AM, Sun S, Kim MJ, Omar AM, Dibwe DF, Ueda JY, Toyooka N, Awale S. Highly Potent Antiausterity Agents from Callistemon citrinus and Their Mechanism of Action against the PANC-1 Human Pancreatic Cancer Cell Line. J Nat Prod 2020; 83:2221-2232. [PMID: 32573227 DOI: 10.1021/acs.jnatprod.0c00330] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Human pancreatic cancer cells display remarkable tolerance to nutrition starvation that help them to survive in a hypovascular tumor microenvironment, a phenomenon known as "austerity". The elucidation of agents countering this tolerance is an established antiausterity strategy in anticancer drug discovery. In this study, a Callistemon citrinus leaf extract inhibited the viability of PANC-1 human pancreatic cancer cells preferentially under nutrient-deprived medium (NDM) with a PC50 value of 7.4 μg/mL. Workup of this extract resulted in the isolation of three new meroterpenoids, callistrilones L-N (1-3), together with 14 known compounds (4-17). The structure elucidation of the new compounds was achieved by HRFABMS and by NMR and ECD spectroscopic analysis. The new compounds showed highly potent preferential cytotoxicity against PANC-1 cells with PC50 values ranging from 10 to 65 nM in NDM. Of these, callistrilone L (1) inhibited PANC-1 cell migration and colony formation in a normal nutrient-rich condition. Callistrilone L (1) also strongly suppressed the migration of PANC-1 cells in real time. Mechanistically, 1 was found to inhibit the Akt/mTOR and autophagy activation pathway. Callistrilone L (1) and related meroterpenoids are promising leads for anticancer drug development based on the antiausterity strategy used in this work.
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Affiliation(s)
- Ahmed M Tawila
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Sijia Sun
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Min Jo Kim
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Ashraf M Omar
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Dya Fita Dibwe
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Jun-Ya Ueda
- Faculty of Pharmaceutical Sciences, Hiroshima International University, 5-1-1, Hirokoshingai, Kure, Hiroshima, 737-0112, Japan
| | - Naoki Toyooka
- Graduate School of Innovative Life Science, Department of Bio-functional Molecular Engineering, University of Toyama, Toyama, 930-8555, Japan
| | - Suresh Awale
- Natural Drug Discovery Laboratory, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
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13
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Alilou M, Dibwe DF, Schwaiger S, Khodami M, Troppmair J, Awale S, Stuppner H. Antiausterity Activity of Secondary Metabolites from the Roots of Ferula hezarlalehzarica against the PANC-1 Human Pancreatic Cancer Cell Line. J Nat Prod 2020; 83:1099-1106. [PMID: 32163286 PMCID: PMC7307951 DOI: 10.1021/acs.jnatprod.9b01109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Indexed: 06/10/2023]
Abstract
Human pancreatic cancer is one of the most aggressive types of cancer, with a high mortality rate. Due to the high tolerance of such cancer cells to nutrient starvation conditions, they can survive in a hypovascular tumor microenvironment. In this study, the dichloromethane extract of the roots of Ferula hezarlalehzarica showed potent preferential cytotoxic activity with a PC50 value of 0.78 μg/mL. Phytochemical investigation of this extract led to the isolation of 18 compounds, including one new sesquiterpenoid (6) and one new monoterpenoid (18). All isolated compounds were evaluated for their preferential cytotoxicity against PANC-1 human pancreatic cancer cells by employing an antiausterity strategy. Among them, ferutinin (2) was identified as the most active compound, with a PC50 value of 0.72 μM. In addition, the real-time effect of ferutinin (2) and compound 6 against PANC-1 cells, exposed to a nutrient-deprived medium (NDM), showed cell shrinkage, leading to cancer cell death within a short period of exposure. Compounds 2 and 6 also inhibited colony formation of PANC-1 cells. The present study indicates that the dichloromethane extract of the roots of F. hezarlalehzarica is a rich source of bioactive compounds for targeting PANC-1 cells.
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Affiliation(s)
- Mostafa Alilou
- Institute
of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, Innsbruck 6020, Austria
- Daniel-Swarovski
Research Laboratory, Department of Visceral, Transplant and Thoracic
Surgery, Innsbruck Medical University, Innrain 66, A-6020 Innsbruck, Austria
| | - Dya Fita Dibwe
- Division
of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Stefan Schwaiger
- Institute
of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, Innsbruck 6020, Austria
| | - Mojtaba Khodami
- Herbal
and Traditional Medicines Research Center, Kerman University of Medical Science, Kerman, Iran
| | - Jakob Troppmair
- Daniel-Swarovski
Research Laboratory, Department of Visceral, Transplant and Thoracic
Surgery, Innsbruck Medical University, Innrain 66, A-6020 Innsbruck, Austria
| | - Suresh Awale
- Division
of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Hermann Stuppner
- Institute
of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, Innsbruck 6020, Austria
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14
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Omar AM, Dibwe DF, Sun S, Tawila AM, Kim MJ, Phrutivorapongkul A, Toyooka N, Awale S. Fragranone C: a new dihydrochalcone glucopyranoside from Anneslea fragrans twigs. Nat Prod Res 2020; 35:3895-3900. [DOI: 10.1080/14786419.2020.1747459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ashraf M. Omar
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Sijia Sun
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Ahmed M. Tawila
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Min Jo Kim
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | | | - Naoki Toyooka
- Graduate School of Science and Engineering, University of Toyama, Toyama, Japan
- Graduate School of Innovative Life Science, University of Toyama, Toyama, Japan
| | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
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15
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Alexander BE, Sun S, Palframan MJ, Kociok‐Köhn G, Dibwe DF, Watanabe S, Caggiano L, Awale S, Lewis SE. Sidechain Diversification of Grandifloracin Allows Identification of Analogues with Enhanced Anti-Austerity Activity against Human PANC-1 Pancreatic Cancer Cells. ChemMedChem 2020; 15:125-135. [PMID: 31821731 PMCID: PMC7003952 DOI: 10.1002/cmdc.201900549] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/11/2019] [Indexed: 12/25/2022]
Abstract
The natural product (+)-grandifloracin is a potent "anti-austerity" agent, able to suppress the ability of various pancreatic cancer cell lines to tolerate conditions of nutrient deprivation. Such anti-austerity agents represent a promising approach to cancer chemotherapy. Here we report the synthesis and biological evaluation of racemic analogues of grandifloracin bearing diverse sidechains, of which two show enhanced potency in comparison with the natural product. Additionally, several unexpected by-products containing modifications of the grandifloracin core were isolated, identified and similarly evaluated for biological activity.
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Affiliation(s)
| | - Sijia Sun
- Institute of Natural MedicineUniversity of Toyama2630 SugitaniToyama930-0194Japan
| | | | - Gabriele Kociok‐Köhn
- Materials and Chemical Characterisation Facility (MC)University of BathBathBA2 7AYUK
| | - Dya Fita Dibwe
- Institute of Natural MedicineUniversity of Toyama2630 SugitaniToyama930-0194Japan
| | - Shiro Watanabe
- Institute of Natural MedicineUniversity of Toyama2630 SugitaniToyama930-0194Japan
| | - Lorenzo Caggiano
- Department of Pharmacy and PharmacologyUniversity of BathBathBA2 7AYUK
| | - Suresh Awale
- Institute of Natural MedicineUniversity of Toyama2630 SugitaniToyama930-0194Japan
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16
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Omar AM, Dibwe DF, Tawila AM, Sun S, Kim MJ, Awale S. Chemical constituents from Artemisia vulgaris and their antiausterity activities against the PANC-1 human pancreatic cancer cell line. Nat Prod Res 2019; 35:4279-4285. [DOI: 10.1080/14786419.2019.1700246] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ashraf M. Omar
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Ahmed M. Tawila
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Sijia Sun
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Min Jo Kim
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, Toyama, Japan
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17
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Omar AM, Dibwe DF, Tawila AM, Sun S, Phrutivorapongkul A, Awale S. Chemical Constituents of Anneslea fragrans and Their Antiausterity Activity against the PANC-1 Human Pancreatic Cancer Cell Line. J Nat Prod 2019; 82:3133-3139. [PMID: 31682126 DOI: 10.1021/acs.jnatprod.9b00735] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An ethanolic extract of Anneslea fragrans leaves showed potent preferential cytotoxicity against PANC-1 human pancreatic cancer cells under a nutrient-deprived condition, with a PC50 value of 9.6 μg/mL. Phytochemical investigation of this active extract led to the isolation of two new secondary metabolites, fragranones A (1) and B (2), along with 15 previously reported compounds. The structure elucidation of the new compounds was achieved by HRFABMS, acid hydrolysis, NMR, and ECD spectroscopic analysis. Fragranone A (1) is the first example of a rare natural product bearing an acetonide glucose moiety. Fragranone B (2) is representative of a rare class of natural products with a threonolactone unit linked to a chalcone through an ether linkage. The isolated compounds exhibited antiausterity activity against PANC-1 cells under nutrient-deprived conditions, and betulin (14) was found to be the most potent compound tested, with a PC50 value of 8.4 μM. In addition, fragranone A (1) was found to suppress PANC-1 cancer cell migration in real time.
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Affiliation(s)
- Ashraf M Omar
- Division of Natural Drug Discovery, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Ahmed M Tawila
- Division of Natural Drug Discovery, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Sijia Sun
- Division of Natural Drug Discovery, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | | | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
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18
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Awale S, Okada T, Dibwe DF, Maruyama T, Takahara S, Okada T, Endo S, Toyooka N. Design and synthesis of functionalized coumarins as potential anti-austerity agents that eliminates cancer cells' tolerance to nutrition starvation. Bioorg Med Chem Lett 2019; 29:1779-1784. [DOI: 10.1016/j.bmcl.2019.05.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/30/2019] [Accepted: 05/07/2019] [Indexed: 02/07/2023]
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19
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Guo QY, Ebihara K, Shimodaira T, Fujiwara H, Toume K, Dibwe DF, Awale S, Araki R, Yabe T, Matsumoto K. Kami-shoyo-san improves ASD-like behaviors caused by decreasing allopregnanolone biosynthesis in an SKF mouse model of autism. PLoS One 2019; 14:e0211266. [PMID: 30703109 PMCID: PMC6354989 DOI: 10.1371/journal.pone.0211266] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 01/10/2019] [Indexed: 11/18/2022] Open
Abstract
Dysfunctions in the GABAergic system are associated with the pathogenesis of autism spectrum disorder (ASD). However, the mechanisms by which GABAergic system dysfunctions induce the pathophysiology of ASD remain unclear. We previously demonstrated that a selective type I 5α-reductase inhibitor SKF105111 (SKF) induced ASD-like behaviors, such as impaired sociability-related performance and repetitive grooming behaviors, in male mice. Moreover, the effects of SKF were caused by a decrease in the endogenous levels of allopregnanolone (ALLO), a positive allosteric modulator of the GABAA receptor. In this study, we used SKF-treated male mice as a putative animal model of ASD and examined the effects of Kami-shoyo-san (KSS) as an experimental therapeutic strategy for ASD. KSS is a traditional Kampo formula consisting of 10 different crude drugs and has been used for the treatment of neuropsychiatric symptoms. KSS dose-dependently attenuated sociability deficits and suppressed an increase in grooming behaviors in SKF-treated mice without affecting ALLO content in the prefrontal cortex. The systemic administration of the dopamine D1 receptor antagonist SCH23390 reversed the ameliorative effects of KSS. On the other hand, the dopamine D2 receptor antagonist sulpiride and GABAA receptor antagonist bicuculline only attenuated the ameliorative effect of KSS on repetitive self-grooming behaviors. The present results indicate that KSS improves SKF-induced ASD-like behaviors by facilitating dopamine receptor-mediated mechanisms and partly by neurosteroid-independent GABAA receptor-mediated neurotransmission. Therefore, KSS is a potential candidate for the treatment of ASD.
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Affiliation(s)
- Qing-Yun Guo
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Ken Ebihara
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | | | - Hironori Fujiwara
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
- * E-mail:
| | - Kazufumi Toume
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Suresh Awale
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Ryota Araki
- Laboratory of Functional Biomolecules and Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, Osaka, Japan
| | - Takeshi Yabe
- Laboratory of Functional Biomolecules and Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, Osaka, Japan
| | - Kinzo Matsumoto
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
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20
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Fujiwara H, Yoshida J, Dibwe DF, Awale S, Hoshino H, Kohama H, Arai H, Kudo Y, Matsumoto K. Orengedokuto and san'oshashinto improve memory deficits by inhibiting aging-dependent activation of glycogen synthase kinase-3β. J Tradit Complement Med 2018; 9:328-335. [PMID: 31453129 PMCID: PMC6702137 DOI: 10.1016/j.jtcme.2018.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 12/20/2018] [Accepted: 12/26/2018] [Indexed: 11/25/2022] Open
Abstract
Background and aim The aging-dependent activation of glycogen synthase kinase-3β (GSK-3β) has been suggested to be important in the onset of dementia. To discover novel therapeutic Kampo medicines for dementia, we examined the effects of orengedokuto (OGT; 黃連解毒湯 huáng lián jiědú tāng) and san'oshashinto (SST; 三黃瀉心湯 sān huáng xiè xīn tāng) on memory deficits and GSK-3β activity in senescence-accelerated prone mice (SAMP8). Experimental procedure The object recognition test (ORT) and conditioned fear memory test (CFT) were employed to elucidate short-term working memory and long-term fear memory. The activity of GSK-3β and the phosphorylation of related molecules were measured using a kinase assay and Western blotting. Results and conclusion OGT and SST attenuated memory deficits in SAMP8 in ORT, but not in CFT. In ex vivo experiments, cortical GSK-3β activity was significantly stronger in SAMP8 than in SAMR1. The enhanced cortical GSK-3β activity in SAMP8 was accompanied by a significant increase in the level of phosphorylated collapsin response mediator protein-2 (CRMP2), an important factor that is involved in the regulation of microtubule stability. OGT and SST attenuated not only increases in cortical GSK-3β activity, but also the levels of phosphorylated CRMP2 in SAMP8. In vitro experiments, flavonoids contained in these kampo medicines, inhibited GSK-3β activity in concentration-dependent manners. These results suggest that OGT and SST prevent aging-induced short-term working memory deficits by inhibiting aging-dependent elevations in the cortical GSK-3β activity and subsequent CRMP2 phosphorylation. OGT and SST attenuated short-term working memory deficits in SAMP8. Age-dependent cortical GSK-3β activation was suppressed by OGT and SST. OGT and SST also attenuated the levels of phosphorylated CRMP2 in SAMP8.
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Key Words
- AD, Alzheimer's disease
- Alzheimer's disease
- BPSD, behavioral and psychological symptoms of dementia
- CFT, conditioned fear memory test
- CRMP2, collapsin response mediator protein-2
- Collapsin response mediator protein-2
- GSK-3β, glycogen synthase kinase-3β
- Glycogen synthase kinase-3β
- OGT, orengedokuto
- ORT, object recognition test
- Orengedokuto
- SAMP8, senescence-accelerated prone mice 8
- SAMR1, senescence-accelerated prone mice-resistant
- SST, san'oshashinto
- san'oshashinto
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Affiliation(s)
| | - Jun Yoshida
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Suresh Awale
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Haruka Hoshino
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Hiroshi Kohama
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Hiroyuki Arai
- Department of Geriatric and Respiratory Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Yukitsuka Kudo
- Department of Geriatric and Respiratory Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Kinzo Matsumoto
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
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Awale S, Dibwe DF, Balachandran C, Fayez S, Feineis D, Lombe BK, Bringmann G. Ancistrolikokine E 3, a 5,8'-Coupled Naphthylisoquinoline Alkaloid, Eliminates the Tolerance of Cancer Cells to Nutrition Starvation by Inhibition of the Akt/mTOR/Autophagy Signaling Pathway. J Nat Prod 2018; 81:2282-2291. [PMID: 30303002 DOI: 10.1021/acs.jnatprod.8b00733] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PANC-1 human pancreatic cancer cells are characterized by their ability to proliferate aggressively under hypovascular and hypoxic conditions in the tumor microenvironment, displaying a remarkable tolerance to nutrition starvation. The antiausterity strategy is a new approach in anticancer drug discovery aiming at the identification of potent agents that inhibit preferentially the survival of tumor cells during a limited supply of nutrients and oxygen. The new 5,8'-coupled naphthyldihydroisoquinoline alkaloid ancistrolikokine E3 (4), isolated from the Congolese liana Ancistrocladus likoko, showed potent preferential cytotoxicity against PANC-1 cells under nutrient-deprived conditions, with a PC50 value of 2.5 μM, without exhibiting toxicity in normal, nutrient-rich medium. The compound was found to induce dramatic alterations in cell morphology, leading to cell death. Moreover, it inhibited significantly PANC-1 cell migration and colony formation in a concentration-dependent manner. This study on 4 provides the first live evidence of the effect of a naphthyldihydroisoquinoline alkaloid against PANC-1 cells in nutrient-deprived medium. Mechanistic investigations conducted suggest that compound 4 is a potent inhibitor of the activation of the Akt/mTOR pathway. Furthermore, it inhibited the expression levels of the key autophagy regulators Atg5, Atg12, Beclin-1, LC3-I, and LC3-II. The results demonstrated that ancistrolikokine E3 (4) is a potent early-stage inhibitor of the autophagy pathway in PANC-1 human pancreatic cancer cells. Ancistrolikokine E3 (4) and related naphthylisoquinoline alkaloids are promising potential lead compounds for anticancer drug development based on the antiausterity strategy.
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Affiliation(s)
- Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Chandrasekar Balachandran
- Division of Natural Drug Discovery, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Shaimaa Fayez
- Institute of Organic Chemistry , University of Würzburg , Am Hubland, D-97074 Würzburg , Germany
| | - Doris Feineis
- Institute of Organic Chemistry , University of Würzburg , Am Hubland, D-97074 Würzburg , Germany
| | - Blaise Kimbadi Lombe
- Institute of Organic Chemistry , University of Würzburg , Am Hubland, D-97074 Würzburg , Germany
- Faculté des Sciences , Université de Kinshasa , B.P. 202, Kinshasa XI , Democratic Republic of the Congo
| | - Gerhard Bringmann
- Institute of Organic Chemistry , University of Würzburg , Am Hubland, D-97074 Würzburg , Germany
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Kavatsurwa SM, Lombe BK, Feineis D, Dibwe DF, Maharaj V, Awale S, Bringmann G. Ancistroyafungines A-D, 5,8′- and 5,1′-coupled naphthylisoquinoline alkaloids from a Congolese Ancistrocladus species, with antiausterity activities against human PANC-1 pancreatic cancer cells. Fitoterapia 2018; 130:6-16. [DOI: 10.1016/j.fitote.2018.07.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 07/25/2018] [Indexed: 12/11/2022]
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23
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Sun S, Phrutivorapongkul A, Dibwe DF, Balachandran C, Awale S. Chemical Constituents of Thai Citrus hystrix and Their Antiausterity Activity against the PANC-1 Human Pancreatic Cancer Cell Line. J Nat Prod 2018; 81:1877-1883. [PMID: 30070833 DOI: 10.1021/acs.jnatprod.8b00405] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Human pancreatic cancer cells have an extreme tolerance to nutrition starvation, enabling them to survive in a hypovascular tumor microenvironment. Searching for agents that preferentially inhibit cancer cell viability under nutrition starvation conditions is a novel antiausterity strategy in anticancer drug discovery. In the present study, a hexane extract of the peels of Citrus hystrix fruits showed preferential cytotoxicity against PANC-1 human pancreatic cancer cells using a nutrient-deprived medium. Phytochemical investigation of this bioactive extract led to the isolation of 10 coumarins (1-10) including a new furanocoumarin (1). The isolated compounds were tested for their preferential cytotoxic activity against three different human pancreatic cancer cell lines [PANC-1, MIA PaCa-2, and PSN-1]. Among these, bergamottin (7) was identified as the most active constituent. In real-time live imaging, 7 was found to induce cell shrinkage, membrane blebbing, and disintegration of organelles in PANC-1 cells. Bergamottin (7) was also found to inhibit PANC-1 cell migration and colony formation. Mechanistically, 7 inhibited key survival proteins in the Akt/mTOR signaling pathway. Bergamottin (7) and related compounds are potential antiausterity candidates for drug development against pancreatic cancer.
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Affiliation(s)
- Sijia Sun
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Ampai Phrutivorapongkul
- Department of Pharmaceutical Sciences, Faculty of Pharmacy , Chiang Mai University , Chiang Mai 50200 , Thailand
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Chandrasekar Balachandran
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
| | - Suresh Awale
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine , University of Toyama , 2630 Sugitani , Toyama 930-0194 , Japan
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Dibwe DF, Sun S, Ueda JY, Balachandran C, Matsumoto K, Awale S. Discovery of potential antiausterity agents from the Japanese cypress Chamaecyparis obtusa. Bioorg Med Chem Lett 2017; 27:4898-4903. [DOI: 10.1016/j.bmcl.2017.09.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/08/2017] [Accepted: 09/14/2017] [Indexed: 02/08/2023]
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Ebihara K, Fujiwara H, Awale S, Dibwe DF, Araki R, Yabe T, Matsumoto K. Decrease in endogenous brain allopregnanolone induces autism spectrum disorder (ASD)-like behavior in mice: A novel animal model of ASD. Behav Brain Res 2017; 334:6-15. [PMID: 28743598 DOI: 10.1016/j.bbr.2017.07.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/11/2017] [Accepted: 07/17/2017] [Indexed: 01/11/2023]
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder with core symptoms of social impairments and restrictive repetitive behaviors. Recent evidence has implicated a dysfunction in the GABAergic system in the pathophysiology of ASD. We investigated the role of endogenous allopregnanolone (ALLO), a neurosteroidal positive allosteric modulator of GABAA receptors, in the regulation of ASD-like behavior in male mice using SKF105111 (SKF), an inhibitor of type I and type II 5α-reductase, a rate-limiting enzyme of ALLO biosynthesis. SKF impaired sociability-related performance, as analyzed by three different tests; i.e., the 3-chamber test and social interaction in the open field and resident-intruder tests, without affecting olfactory function elucidated by the buried food test. SKF also induced repetitive grooming behavior without affecting anxiety-like behavior. SKF had no effect on short-term spatial working memory or long-term fear memory, but enhanced latent learning ability in male mice. SKF-induced ASD-like behavior in male mice was abolished by the systemic administration of ALLO (1mg/kg, i.p.) and methylphenidate (MPH: 2.5mg/kg, i.p.), a dopamine transporter inhibitor. The effects of SKF on brain ALLO contents in male mice were reversed by ALLO, but not MPH. On the other hand, SKF failed to induce ASD-like behavior or a decline in brain ALLO contents in female mice. These results suggest that ALLO regulates episodes of ASD-like behavior by positively modulating the function of GABAA receptors linked to the dopaminergic system. Moreover, a sex-dependently induced decrease in brain ALLO contents may provide an animal model to study the main features of ASD.
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Affiliation(s)
- Ken Ebihara
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Hironori Fujiwara
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Suresh Awale
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Ryota Araki
- Laboratory of Functional Biomolecules and Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata City, Osaka 573-0101, Japan
| | - Takeshi Yabe
- Laboratory of Functional Biomolecules and Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata City, Osaka 573-0101, Japan
| | - Kinzo Matsumoto
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
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Awale S, Tawila AM, Dibwe DF, Ueda JY, Sun S, Athikomkulchai S, Balachandran C, Saiki I, Matsumoto K, Esumi H. Highly oxygenated antiausterity agents from the leaves of Uvaria dac. Bioorg Med Chem Lett 2017; 27:1967-1971. [DOI: 10.1016/j.bmcl.2017.03.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 02/24/2017] [Accepted: 03/09/2017] [Indexed: 02/02/2023]
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27
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Kodama T, Ito T, Dibwe DF, Woo SY, Morita H. Syntheses of benzophenone-xanthone hybrid polyketides and their antibacterial activities. Bioorg Med Chem Lett 2017; 27:2397-2400. [PMID: 28416134 DOI: 10.1016/j.bmcl.2017.04.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 02/22/2017] [Accepted: 04/05/2017] [Indexed: 10/19/2022]
Abstract
Muchimangins are benzophenone-xanthone hybrid polyketides produced by Securidaca longepedunculata. However, their biological activities have not been fully investigated, since they are minor constituents in this plant. To evaluate the possibility of muchimangins as antibacterial agent candidates, five muchimangin analogs were synthesized from 2,4,5-trimethoxydiphenyl methanol and the corresponding xanthones, by utilizing p-toluenesulfonic acid monohydrate for the Brønsted acid-catalysis. The antibacterial assays against Gram-positive bacteria, Staphylococcus aureus and Bacillus subtilis, and Gram-negative bacteria, Klebsiella pneumoniae and Escherichia coli, revealed that the muchimangin analogs (±)-1,3,6,8-tetrahydroxy-4-(phenyl-(2',4',5'-trimethoxyphenyl)methyl)-xanthone (1), (±)-1,3,6-trihydroxy-4-(phenyl-(2',4',5'-trimethoxyphenyl)methyl)-xanthone (2), and (±)-1,3-dihydroxy-4-(phenyl-(2',4',5'-trimethoxyphenyl)methyl)-xanthone (3) showed significant activities against S. aureus, with MIC values of 10.0, 10.0, and 25.0μM, respectively. Analogs (±)-1 and (±)-2 also exhibited antibacterial activities against B. subtilis, with MIC values of 50.0 and 12.5μM, respectively. Furthermore, (+)-3 enhanced the antibacterial activity against S. aureus, with a MIC value of 10μM.
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Affiliation(s)
- Takeshi Kodama
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Takuya Ito
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan.
| | - Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - So-Yeun Woo
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan.
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28
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Nguyen NT, Nguyen MTT, Nguyen HX, Dang PH, Dibwe DF, Esumi H, Awale S. Constituents of the Rhizomes of Boesenbergia pandurata and Their Antiausterity Activities against the PANC-1 Human Pancreatic Cancer Line. J Nat Prod 2017; 80:141-148. [PMID: 28099006 DOI: 10.1021/acs.jnatprod.6b00784] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Human pancreatic cancer cell lines have a remarkable tolerance to nutrition starvation, which enables them to survive under a tumor microenvironment. The search for agents that preferentially inhibit the survival of cancer cells under low nutrient conditions represents a novel antiausterity strategy in anticancer drug discovery. In this investigation, a methanol extract of the rhizomes of Boesenbergia pandurata showed potent preferential cytotoxicity against PANC-1 human pancreatic cancer cells under nutrient-deprived conditions, with a PC50 value of 6.6 μg/mL. Phytochemical investigation of this extract led to the isolation of 15 compounds, including eight new cyclohexene chalcones (1-8). The structures of the new compounds were elucidated by NMR spectroscopic data analysis. Among the isolated compounds obtained, isopanduratin A1 (14) and nicolaioidesin C (15) exhibited potent preferential cytotoxicity against PANC-1 human pancreatic cancer cells under nutrition-deprived conditions, with PC50 values of 1.0 and 0.84 μM, respectively.
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Affiliation(s)
- Nhan Trung Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Hai Xuan Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Phu Hoang Dang
- Faculty of Chemistry, University of Science, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama , 2630 Sugitani, Toyama 930-0194, Japan
| | - Hiroyasu Esumi
- Research Institute for Biomedical Sciences, Tokyo University of Science , Chiba 278-8510, Japan
| | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama , 2630 Sugitani, Toyama 930-0194, Japan
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29
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Nguyen HX, Nguyen NT, Dang PH, Thi PH, Nguyen MTT, Can MV, Dibwe DF, Ueda JY, Matsumoto K, Awale S. A New Cassane-type Diterpene from the Seed of Caesalpinia sappan. Nat Prod Commun 2016; 11:723-724. [PMID: 27534101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023] Open
Abstract
Phytochemical investigation of the CH2Cl2 extract of the Vietnamese medicinal plant Caesalpinia sappan Linn resulted in the isolation of a new cassane-type diterpene named tomocin I (1). Its chemical structure was determined by NMR spectroscopic and mass spectrometric analysis.
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Nguyen HX, Nguyen NT, Dang PH, Thi PH, Nguyen MTT, Van Can M, Dibwe DF, Ueda JY, Matsumoto K, Awale S. A New Cassane-type Diterpene from the Seed of Caesalpinia Sappan. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Phytochemical investigation of the CH2C12 extract of the Vietnamese medicinal plant Caesalpinia sappan Linn resulted in the isolation of a new cassane-type diterpene named tomocin I (1). Its chemical structure was determined by NMR spectroscopic and mass spectrometric analysis.
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Affiliation(s)
- Hai Xuan Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Nhan Trung Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Phu Hoang Dang
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Phuoc Ho Thi
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Mao Van Can
- Vietnam Military Medical University, 160 Phung Hung Street, Dong Ha, Ha Noi, Vietnam
| | - Dya Fita Dibwe
- Division of Medicinal Pharmacology, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Jun-ya Ueda
- Faculty of Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Kinzo Matsumoto
- Division of Medicinal Pharmacology, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Suresh Awale
- ivision of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
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Nguyen HX, Nguyen NT, Dang PH, Thi Ho P, Nguyen MTT, Van Can M, Dibwe DF, Ueda JY, Awale S. Cassane diterpenes from the seed kernels of Caesalpinia sappan. Phytochemistry 2016; 122:286-293. [PMID: 26769396 DOI: 10.1016/j.phytochem.2015.12.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 12/18/2015] [Accepted: 12/31/2015] [Indexed: 06/05/2023]
Abstract
Eight structurally diverse cassane diterpenes named tomocins A-H were isolated from the seed kernels of Vietnamese Caesalpinia sappan Linn. Their structures were determined by extensive NMR and CD spectroscopic analysis. Among the isolated compounds, tomocin A, phanginin A, F, and H exhibited mild preferential cytotoxicity against PANC-1 human pancreatic cancer cells under nutrition-deprived condition without causing toxicity in normal nutrient-rich conditions.
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Affiliation(s)
- Hai Xuan Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, Viet Nam
| | - Nhan Trung Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, Viet Nam
| | - Phu Hoang Dang
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, Viet Nam
| | - Phuoc Thi Ho
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, Viet Nam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University-Ho Chi Minh City, Viet Nam.
| | - Mao Van Can
- Vietnam Military Medical University, Ha Noi, Viet Nam
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Jun-Ya Ueda
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Suresh Awale
- Division of Natural Drug Discovery, Department of Translational Research, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
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Farley CM, Dibwe DF, Ueda JY, Hall EA, Awale S, Magolan J. Evaluation of synthetic coumarins for antiausterity cytotoxicity against pancreatic cancers. Bioorg Med Chem Lett 2016; 26:1471-4. [PMID: 26832787 DOI: 10.1016/j.bmcl.2016.01.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/14/2016] [Accepted: 01/19/2016] [Indexed: 01/15/2023]
Abstract
A series of functionalized coumarins were synthesized and evaluated for their capacity to inhibit the resistance to starvation of pancreatic cancer cells. This form of cytotoxicity, termed 'antiausterity' activity, was evaluated using a preferential cytotoxicity assay that compared cell survival in nutrient poor and nutrient rich conditions. Six of the seventeen compounds showed weak antiausterity activity against PANC-1. Compound 34 was active against PANC-1, MIA PaCa-2, and Capan-1 cancer cell lines. All of the compounds tested were simplified structural analogs of previously reported natural product leads. Six of the compounds, including 34, contain functionalized triazoles as novel potential bioisosteres of the side chain of the natural product angelmarin. Overall, the analogs were found to have low antiausterity activity relative to the corresponding natural products.
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Affiliation(s)
- Conner M Farley
- Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA
| | - Dya Fita Dibwe
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Jun-ya Ueda
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Eric A Hall
- Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA
| | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Jakob Magolan
- Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA
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Abstract
In the course of our search for anticancer agents based on a novel anti-austerity strategy, we found that the CHCl3 extract of the roots of Aflamomum melegueta (Zingiberaceae), collected in the Democratic Republic of Congo, killed PANC-1 human pancreatic cancer cells preferentially in nutrient-deprived medium (NDM). Phytochemical investigation of the CHCl3 extract led to the isolation of seven known compounds [(-)-buplerol (1), (-)-arctigenin (2), ( E)-14-hydroxy-15-norlabda-8(17),12-dien-16-al (3), labda-8(17),12-dien-15,16-dial (4), 16-oxo-8(17),12( E)-labdadien-15-oic acid (5), 5-hydroxy-7-methoxyflavone (6), and apigenin (7)]. In addition to the previously reported preferentially cytotoxic compound, (-)-arctigenin (2, PC50 0.5 μM), (-)-buplerol (1) also displayed potent preferential cytotoxicity with a PC50 value of 8.42 pM and triggered apoptosis-like PANC-1 cell death in NDM.
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Affiliation(s)
- Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Suresh Awale
- Frontier Research Core for Life sciences, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Yasuhiro Tezuka
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
- Faculty of Pharmaceutical Sciences, Hokuriku University, Ho-3, Kanagawa-machi, Kanazawa 920–1181, Japan
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Lallo S, Lee S, Dibwe DF, Tezuka Y, Morita H. A new polyoxygenated cyclohexane and other constituents from Kaempferia rotunda and their cytotoxic activity. Nat Prod Res 2014; 28:1754-9. [DOI: 10.1080/14786419.2014.945175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Subehan Lallo
- Faculty of Pharmacy, Biofarmaka Research Center, Hasanuddin University, Jl. Perintis Kemerdekaan Km 10, Makassar, 90245, Indonesia
| | - Sullim Lee
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama, 930-0194, Japan
| | - Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama, 930-0194, Japan
| | - Yasuhiro Tezuka
- Faculty of Pharmaceutical Sciences, Hokuriku University, Ho-3 Kanagawa-machi, Kanazawa, 920-1181, Japan
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama, 930-0194, Japan
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Abstract
Two new diphenylmethyl-substituted xanthones, named muchimangins K (1) and L (2), have been isolated from the roots of Securidaca longepedunculata (Polygalaceae) collected in the Democratic Republic of Congo. Their structures were established by analyses of the spectral data, including 2D NMR spectra, to be l,3,6,8-tetrahydroxy-2,5-dimethoxy-4-[l-(2,4,5-trimethoxyphenyl)-1-phenylmethyl]xanthone (1) and l,3,6-trihydroxy-4,7-dimethoxy-2-[l-(2,4,5-trimethoxyphenyl)-1-phenylmethyl]xanthone (2).
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Affiliation(s)
- Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Suresh Awale
- Frontier Research Core for Life sciences, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Shigetoshi Kadota
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
| | - Yasuhiro Tezuka
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
- Faculty of Pharmaceutical Sciences, Hokuriku University, Ho-3 Kanagawa-machi, Kanazawa 920-1181, Japan
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Dibwe DF, Awale S, Kadota S, Morita H, Tezuka Y. Two new diphenylmethyl-substituted xanthones from Seicuridaca longepedunculata. Nat Prod Commun 2014; 9:655-657. [PMID: 25026713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
Two new diphenylmethyl-substituted xanthones, named muchimangins K (1) and L (2), have been isolated from the roots of Securidaca longepedunculata (Polygalaceae) collected in the Democratic Republic of Congo. Their structures were established by analyses of the spectral data, including 2D NMR spectra, to be 1 ,3,6,8-tetrahydroxy-2.5-dimethoxy-4-[ -(2,4,5-trimethoxyphenyl)-1-phenylmethyl]xanthone (1) and 1,3,6-trihydroxy-4,7-dimethoxy-2-[1-(2,4,5-trimethoxyphenyl)- 1-phenylmethyl]xanthone (2).
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Awale S, Kato M, Dibwe DF, Li F, Miyoshi C, Esumi H, Kadota S, Tezuka Y. Antiausterity Activity of Arctigenin Enantiomers: Importance of (2 R,3 R)-Absolute Configuration. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
From a MeOH extract of powdered roots of Wikstroema indica, six dibenzyl-γ-butyrolactone-type lignans with (2 S,3 S)-absolute configuration [(+)-arctigenin (1), (+)-matairesinol (2), (+)-trachelogenin (3), (+)-nortrachelogenin (4), (+)-hinokinin (5), and (+)-kusunokinin (6)] were isolated, whereas three dibenzyl-γ-butyrolactone-type lignans with (2 R,3 R)-absolute configuration [(-)-arctigenin (1), (-)-matairesinol (2), (-)-trachelogenin (3)] were isolated from Trachelospermum asiaticum. The in vitro preferential cytotoxic activity of the nine compounds was evaluated against human pancreatic PANC-1 cancer cells in nutrient-deprived medium (NDM), but none of the six lignans (1–6) with (2 S,3 S)-absolute configuration showed preferential cytotoxicity. On the other hand, three lignans (1*–3*) with (2 R,3 R)-absolute configuration exhibited preferential cytotoxicity in a concentration-dependent manner with PC50 values of 0.54, 6.82, and 5.85 μM, respectively. Furthermore, the effect of (-)- and (+)-arctigenin was evaluated against the activation of Akt, which is a key process in the tolerance to nutrition starvation. Interestingly, only (-)-arctigenin (1*) strongly suppressed the activation of Akt. These results indicate that the (2 R,3 R)-absolute configuration of (-)-enantiomers should be required for the preferential cytotoxicity through the inhibition of Akt activation.
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Affiliation(s)
- Suresh Awale
- Frontier Research Core for Life Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Mamoru Kato
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
| | - Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
| | - Feng Li
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
| | - Chika Miyoshi
- Cancer Physiology Project, Research Center for Innovative Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - Hiroyasu Esumi
- Cancer Physiology Project, Research Center for Innovative Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - Shigetoshi Kadota
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
| | - Yasuhiro Tezuka
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
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Awale S, Kato M, Dibwe DF, Li F, Miyoshi C, Esumi H, Kadota S, Tezuka Y. Antiausterity activity of arctigenin enantiomers: importance of (2R,3R)-absolute configuration. Nat Prod Commun 2014; 9:79-82. [PMID: 24660468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
From a MeOH extract of powdered roots of Wikstroemia indica, six dibenzyl-gamma-butyrolactone-type lignans with (2S,3S)-absolute configuration [(+)-arctigenin (1), (+)-matairesinol (2), (+)-trachelogenin (3), (+)-nortrachelogenin (4), (+)-hinokinin (5), and (+)-kusunokinin (6)] were isolated, whereas three dibenzyl-gamma-butyrolactone-type lignans with (2R,3R)-absolute configuration [(-)-arctigenin (1*), (-)-matairesinol (2*), (-)-trachelogenin (3*)] were isolated from Trachelospermum asiaticum. The in vitro preferential cytotoxic activity of the nine compounds was evaluated against human pancreatic PANC-1 cancer cells in nutrient-deprived medium (NDM), but none of the six lignans (1-6) with (2S,3S)-absolute configuration showed preferential cytotoxicity. On the other hand, three lignans (1*-3*) with (2R,3R)-absolute configuration exhibited preferential cytotoxicity in a concentration-dependent manner with PC50 values of 0.54, 6.82, and 5.85 microM, respectively. Furthermore, the effect of (-)- and (+)-arctigenin was evaluated against the activation of Akt, which is a key process in the tolerance to nutrition starvation. Interestingly, only (-)-arctigenin (1*) strongly suppressed the activation of Akt. These results indicate that the (2R,3R)-absolute configuration of (-)-enantiomers should be required for the preferential cytotoxicity through the inhibition of Akt activation.
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Dibwe DF, Awale S, Kadota S, Morita H, Tezuka Y. Heptaoxygenated xanthones as anti-austerity agents from Securidaca longepedunculata. Bioorg Med Chem 2013; 21:7663-8. [DOI: 10.1016/j.bmc.2013.10.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 10/17/2013] [Accepted: 10/19/2013] [Indexed: 11/28/2022]
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40
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Kudou N, Taniguchi A, Sugimoto K, Matsuya Y, Kawasaki M, Toyooka N, Miyoshi C, Awale S, Dibwe DF, Esumi H, Kadota S, Tezuka Y. Synthesis and antitumor evaluation of arctigenin derivatives based on antiausterity strategy. Eur J Med Chem 2013; 60:76-88. [DOI: 10.1016/j.ejmech.2012.11.031] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/14/2012] [Accepted: 11/21/2012] [Indexed: 10/27/2022]
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Awale S, Ueda JY, Athikomkulchai S, Dibwe DF, Abdelhamed S, Yokoyama S, Saiki I, Miyatake R. Uvaridacols E-H, highly oxygenated antiausterity agents from Uvaria dac. J Nat Prod 2012; 75:1999-2002. [PMID: 23092429 DOI: 10.1021/np300596c] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Chemical investigation of the stems of Uvaria dac yielded four new highly oxygenated cyclohexene derivatives named uvaridacols E-H (1-4). Their structures were established through NMR and circular dichroism spectroscopic analysis. Uvaridacols E (1), F (2), and H (4) displayed weak preferential cytotoxicity against PANC-1 human pancreatic cancer cells under nutrition-deprived conditions in a concentration-dependent manner, without causing toxicity in normal nutrient-rich conditions.
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Affiliation(s)
- Suresh Awale
- Frontier Research Core for Life Sciences, University of Toyama , 2630 Sugitani, Toyama 930-0194, Japan
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Dibwe DF, Awale S, Kadota S, Tezuka Y. Muchimangins A–D: novel diphenylmethyl-substituted xanthones from Securidaca longepedunculata. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.115] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
During a search for potent anticancer agents from natural products based on an anti-austerity strategy, we found that a CHCl3 extract of Rhizoma et Radix Notopterygii (Qianghuo), a Chinese crude drug, exhibited strong cytotoxicity against PANC-1 human pancreatic cancer cells, with a PC₅₀ value of 17.5 µg/mL. Further fractionation and purification of this bioactive extract led to the isolation of 19 known compounds. The in vitro preferential cytotoxicity of the isolates was evaluated against two human pancreatic cancer cell lines, PANC-1 and PSN-1. Among the compounds isolated, ostruthin displayed the most potent activity against both PANC-1 (PC₅₀, 7.2 µM) and PSN-1 (PC₅₀, 7.8 µM) cells in nutrient-deprived medium (NDM) and may have induced necrotic nutrient-deprived PANC-1 cell death.
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Affiliation(s)
- Feng Li
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
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Dibwe DF, Awale S, Kadota S, Tezuka Y. Damnacanthal from the Congolese medicinal plant Garcinia huillensis has a potent preferential cytotoxicity against human pancreatic cancer PANC-1 cells. Phytother Res 2012; 26:1920-6. [PMID: 22447631 DOI: 10.1002/ptr.4672] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 02/09/2012] [Accepted: 02/15/2012] [Indexed: 01/08/2023]
Abstract
Screening of eight Congolese medicinal plants showed that the CHCl(3) and MeOH extracts of Aframomum melegueta (PC(50) = 47.8 µg/mL and 13.8 µg/mL, respectively) and CHCl(3) extracts of Garcinia huillensis (PC(50) = 17.8 µg/mL) and Securidaca longepedunculata (PC(50) = 23.4 µg/mL) had preferential cytotoxicity against human pancreatic cancer PANC-1 cells under nutrient-deprived conditions. The active constituents of the CHCl(3) extract of G. huillensis were examined and 12 known anthraquinones were identified. Among them, damnacanthal (1) caused preferential necrotic cell death of PANC-1 and PSN-1 cells under nutrient-deprived and serum-sensitive conditions (PC(50) = 4.46 µm and 3.77 µm, respectively).
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Affiliation(s)
- Dya Fita Dibwe
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan
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