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Dey S, Das A, Hossain MF. Galiellalactone: a review on synthetic strategies and tactics. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02630-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Rohr M, Kiefer AM, Kauhl U, Groß J, Opatz T, Erkel G. Anti-inflammatory dihydroxanthones from a Diaporthe species. Biol Chem 2021; 403:89-101. [PMID: 34333887 DOI: 10.1515/hsz-2021-0192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 07/09/2021] [Indexed: 11/15/2022]
Abstract
In a search for anti-inflammatory compounds from fungi inhibiting the promoter activity of the small chemokine CXCL10 (Interferon-inducible protein 10, IP-10) as a pro-inflammatory marker gene, the new dihydroxanthone methyl (1R, 2R)-1,2,8-trihydroxy-6-(hydroxymethyl)-9-oxo-2,9-dihydro-1H-xanthene-1-carboxylate (2) and the previously described dihydroxanthone AGI-B4 (1) were isolated from fermentations of a Diaporthe species. The structures of the compounds were elucidated by a combination of one- and two-dimensional NMR spectroscopy, mass spectrometry, and calculations using density functional theory (DFT). Compounds 1 and 2 inhibited the LPS/IFNγ induced CXCL10 promoter activity in transiently transfected human MonoMac6 cells in a dose-dependent manner with IC50 values of 4.1 µM (±0.2 µM) and 1.0 µM (±0.06 µM) respectively. Moreover, compounds 1 and 2 reduced mRNA levels and synthesis of pro-inflammatory mediators such as cytokines and chemokines in LPS/IFNγ stimulated MonoMac6 cells by interfering with the Stat1 and NFκB pathway.
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Affiliation(s)
- Markus Rohr
- Department of Molecular Biotechnology and Systems Biology, University of Kaiserslautern, Paul-Ehrlich-Strasse 23, D-67663Kaiserslautern, Germany
| | - Anna Maria Kiefer
- Department of Molecular Biotechnology and Systems Biology, University of Kaiserslautern, Paul-Ehrlich-Strasse 23, D-67663Kaiserslautern, Germany
| | - Ulrich Kauhl
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55128Mainz, Germany
| | - Jonathan Groß
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55128Mainz, Germany
| | - Till Opatz
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55128Mainz, Germany
| | - Gerhard Erkel
- Department of Molecular Biotechnology and Systems Biology, University of Kaiserslautern, Paul-Ehrlich-Strasse 23, D-67663Kaiserslautern, Germany
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Lu Y, Zhao S, Zhou S, Chen SC, Luo T. Enantioselective syntheses and application of 4-epi-galiellalactone and the corresponding activity-based probe: from strained bicycles to strained tricycles. Org Biomol Chem 2019; 17:1886-1892. [PMID: 30183048 DOI: 10.1039/c8ob01915k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The [6,5,5] tricyclic fungal metabolite galiellalactone is a Michael acceptor that has been demonstrated to be a covalent inhibitor for Signal Transducer and Activator of Transcription 3 (STAT3). Recognizing the ring strain associated with the skeleton of this natural product, we utilized 1R-5S-bicyclo[3.1.0]hexan-2-one as the starting material and developed two novel approaches to accomplish the enantioselective total synthesis of the C4 epimer of galiellalactone in 5 and 7 steps, respectively, which capitalized on an efficient radical cyclization/fragmentation cascade reaction. Furthermore, an activity-based probe of 4-epi-galiellalactone with a terminal alkyne tag was successfully prepared to enable the experiments of activity-based protein profiling (ABPP). Through western blot and proteomic analysis, we not only confirmed the known target STAT3, but also identified a new target protein ataxin-7, which formed a covalent bond with the probe in intact cells via the Cys-129 residue.
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Affiliation(s)
- Yandong Lu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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SWATH proteomic profiling of prostate cancer cells identifies NUSAP1 as a potential molecular target for Galiellalactone. J Proteomics 2019; 193:217-229. [DOI: 10.1016/j.jprot.2018.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/22/2018] [Accepted: 10/23/2018] [Indexed: 12/13/2022]
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Linnakoski R, Reshamwala D, Veteli P, Cortina-Escribano M, Vanhanen H, Marjomäki V. Antiviral Agents From Fungi: Diversity, Mechanisms and Potential Applications. Front Microbiol 2018; 9:2325. [PMID: 30333807 PMCID: PMC6176074 DOI: 10.3389/fmicb.2018.02325] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/11/2018] [Indexed: 01/14/2023] Open
Abstract
Viral infections are amongst the most common diseases affecting people worldwide. New viruses emerge all the time and presently we have limited number of vaccines and only few antivirals to combat viral diseases. Fungi represent a vast source of bioactive molecules, which could potentially be used as antivirals in the future. Here, we have summarized the current knowledge of fungi as producers of antiviral compounds and discuss their potential applications. In particular, we have investigated how the antiviral action has been assessed and what is known about the molecular mechanisms and actual targets. Furthermore, we highlight the importance of accurate fungal species identification on antiviral and other natural products studies.
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Affiliation(s)
| | - Dhanik Reshamwala
- Division of Cell and Molecular Biology, Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Pyry Veteli
- Natural Resources Institute Finland (Luke), Helsinki, Finland
| | | | - Henri Vanhanen
- Natural Resources Institute Finland (Luke), Joensuu, Finland
| | - Varpu Marjomäki
- Division of Cell and Molecular Biology, Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
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Linnakoski R, Reshamwala D, Veteli P, Cortina-Escribano M, Vanhanen H, Marjomäki V. Antiviral Agents From Fungi: Diversity, Mechanisms and Potential Applications. Front Microbiol 2018. [PMID: 30333807 DOI: 10.3389/fmicb.2018.02325/bibtex] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2023] Open
Abstract
Viral infections are amongst the most common diseases affecting people worldwide. New viruses emerge all the time and presently we have limited number of vaccines and only few antivirals to combat viral diseases. Fungi represent a vast source of bioactive molecules, which could potentially be used as antivirals in the future. Here, we have summarized the current knowledge of fungi as producers of antiviral compounds and discuss their potential applications. In particular, we have investigated how the antiviral action has been assessed and what is known about the molecular mechanisms and actual targets. Furthermore, we highlight the importance of accurate fungal species identification on antiviral and other natural products studies.
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Affiliation(s)
| | - Dhanik Reshamwala
- Division of Cell and Molecular Biology, Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Pyry Veteli
- Natural Resources Institute Finland (Luke), Helsinki, Finland
| | | | - Henri Vanhanen
- Natural Resources Institute Finland (Luke), Joensuu, Finland
| | - Varpu Marjomäki
- Division of Cell and Molecular Biology, Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
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Nayar U, Sadek J, Reichel J, Hernandez-Hopkins D, Akar G, Barelli PJ, Sahai MA, Zhou H, Totonchy J, Jayabalan D, Niesvizky R, Guasparri I, Hassane D, Liu Y, Sei S, Shoemaker RH, Warren JD, Elemento O, Kaye KM, Cesarman E. Identification of a nucleoside analog active against adenosine kinase-expressing plasma cell malignancies. J Clin Invest 2017; 127:2066-2080. [PMID: 28504647 DOI: 10.1172/jci83936] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 03/16/2017] [Indexed: 12/22/2022] Open
Abstract
Primary effusion lymphoma (PEL) is a largely incurable malignancy of B cell origin with plasmacytic differentiation. Here, we report the identification of a highly effective inhibitor of PEL. This compound, 6-ethylthioinosine (6-ETI), is a nucleoside analog with toxicity to PEL in vitro and in vivo, but not to other lymphoma cell lines tested. We developed and performed resistome analysis, an unbiased approach based on RNA sequencing of resistant subclones, to discover the molecular mechanisms of sensitivity. We found different adenosine kinase-inactivating (ADK-inactivating) alterations in all resistant clones and determined that ADK is required to phosphorylate and activate 6-ETI. Further, we observed that 6-ETI induces ATP depletion and cell death accompanied by S phase arrest and DNA damage only in ADK-expressing cells. Immunohistochemistry for ADK served as a biomarker approach to identify 6-ETI-sensitive tumors, which we documented for other lymphoid malignancies with plasmacytic features. Notably, multiple myeloma (MM) expresses high levels of ADK, and 6-ETI was toxic to MM cell lines and primary specimens and had a robust antitumor effect in a disseminated MM mouse model. Several nucleoside analogs are effective in treating leukemias and T cell lymphomas, and 6-ETI may fill this niche for the treatment of PEL, plasmablastic lymphoma, MM, and other ADK-expressing cancers.
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Affiliation(s)
| | | | | | | | - Gunkut Akar
- Department of Pathology and Laboratory Medicine
| | | | - Michelle A Sahai
- Department of Physiology and Biophysics, Weill Cornell Medical College, New York, New York, USA
| | - Hufeng Zhou
- Department of Medicine, Brigham and Women's Hospital, and Harvard Medical School, Boston, Massachusetts, USA
| | | | | | - Ruben Niesvizky
- Division of Hematology and Medical Oncology, Department of Medicine, Weill Cornell Medical College, New York, New York, USA
| | | | - Duane Hassane
- Division of Hematology and Medical Oncology, Department of Medicine, Weill Cornell Medical College, New York, New York, USA
| | - Yifang Liu
- Department of Pathology and Laboratory Medicine
| | - Shizuko Sei
- Viral Vector Toxicology Section, Laboratory of Human Toxicology and Pharmacology, SAIC-Frederick, National Cancer Institute at Frederick, Frederick, Maryland, USA
| | - Robert H Shoemaker
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute at Frederick, Frederick, Maryland, USA
| | | | - Olivier Elemento
- Department of Physiology and Biophysics, Weill Cornell Medical College, New York, New York, USA
| | - Kenneth M Kaye
- Department of Medicine, Brigham and Women's Hospital, and Harvard Medical School, Boston, Massachusetts, USA
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García V, Lara-Chica M, Cantarero I, Sterner O, Calzado MA, Muñoz E. Galiellalactone induces cell cycle arrest and apoptosis through the ATM/ATR pathway in prostate cancer cells. Oncotarget 2016; 7:4490-506. [PMID: 26683224 PMCID: PMC4826221 DOI: 10.18632/oncotarget.6606] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 11/26/2015] [Indexed: 12/14/2022] Open
Abstract
Galiellalactone (GL) is a fungal metabolite that presents antitumor activities on prostate cancer in vitro and in vivo. In this study we show that GL induced cell cycle arrest in G2/M phase, caspase-dependent apoptosis and also affected the microtubule organization and migration ability in DU145 cells. GL did not induce double strand DNA break but activated the ATR and ATM-mediated DNA damage response (DDR) inducing CHK1, H2AX phosphorylation (fH2AX) and CDC25C downregulation. Inhibition of the ATM/ATR activation with caffeine reverted GL-induced G2/M cell cycle arrest, apoptosis and DNA damage measured by fH2AX. In contrast, UCN-01, a CHK1 inhibitor, prevented GL-induced cell cycle arrest but enhanced apoptosis in DU145 cells. Furthermore, we found that GL did not increase the levels of intracellular ROS, but the antioxidant N-acetylcysteine (NAC) completely prevented the effects of GL on fH2AX, G2/M cell cycle arrest and apoptosis. In contrast to NAC, other antioxidants such as ambroxol and EGCG did not interfere with the activity of GL on cell cycle. GL significantly suppressed DU145 xenograft growth in vivo and induced the expression of fH2AX in the tumors. These findings identify for the first time that GL activates DDR in prostate cancer.
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Affiliation(s)
- Víctor García
- Maimónides Biomedical Research Institute of Córdoba, Reina Sofía University Hospital, Department of Cell Biology, Physiology and Immunology, University of Córdoba, Córdoba, Spain
| | - Maribel Lara-Chica
- Maimónides Biomedical Research Institute of Córdoba, Reina Sofía University Hospital, Department of Cell Biology, Physiology and Immunology, University of Córdoba, Córdoba, Spain
| | - Irene Cantarero
- Maimónides Biomedical Research Institute of Córdoba, Reina Sofía University Hospital, Department of Cell Biology, Physiology and Immunology, University of Córdoba, Córdoba, Spain
| | - Olov Sterner
- Department of Science, Centre for Analysis and Synthesis, Lund University, Lund, Sweden
| | - Marco A Calzado
- Maimónides Biomedical Research Institute of Córdoba, Reina Sofía University Hospital, Department of Cell Biology, Physiology and Immunology, University of Córdoba, Córdoba, Spain
| | - Eduardo Muñoz
- Maimónides Biomedical Research Institute of Córdoba, Reina Sofía University Hospital, Department of Cell Biology, Physiology and Immunology, University of Córdoba, Córdoba, Spain
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Bollmann F, Jäckel S, Schmidtke L, Schrick K, Reinhardt C, Jurk K, Wu Z, Xia N, Li H, Erkel G, Walter U, Kleinert H, Pautz A. Anti-Inflammatory and Anti-Thrombotic Effects of the Fungal Metabolite Galiellalactone in Apolipoprotein E-Deficient Mice. PLoS One 2015; 10:e0130401. [PMID: 26076475 PMCID: PMC4468253 DOI: 10.1371/journal.pone.0130401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 05/20/2015] [Indexed: 12/13/2022] Open
Abstract
Patients suffering from chronic inflammatory diseases have an increased mortality risk resulting from cardiovascular disorders due to enhanced atherosclerotic and thrombotic events. Until now, it is not completely understood in which way an abnormal expression of pro-inflammatory mediators contributes to this elevated cardiovascular risk, but there is a need for new drugs that on the one hand suppress the expression of pro-inflammatory mediators and on the other hand inhibit arterial platelet adhesion. Thus, we analyzed the anti-inflammatory and anti-thrombotic capacity of the fungal metabolite Galiellalactone in atherosclerosis-prone apolipoprotein E-deficient mice. Treatment of the mice with Galiellalactone lowered the inflammatory expression profile and improved blood clotting times, as well as platelet adhesion to the injured common carotid artery. The results indicate that administration of Galiellalactone is able to reduce the extent of inflammation and arterial platelet adhesion in this mouse model.
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Affiliation(s)
- Franziska Bollmann
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Sven Jäckel
- Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Lisa Schmidtke
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Katharina Schrick
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Kerstin Jurk
- Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Zhixiong Wu
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Ning Xia
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Huige Li
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Gerhard Erkel
- Department of Molecular Biotechnology and Systems Biology, Technical University Kaiserslautern, Kaiserslautern, Germany
| | - Ulrich Walter
- Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Hartmut Kleinert
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- * E-mail:
| | - Andrea Pautz
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
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Galiellalactone analogs and their possible precursors from Sarcosomataceae. Fitoterapia 2015; 101:92-8. [DOI: 10.1016/j.fitote.2015.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 12/31/2014] [Accepted: 01/06/2015] [Indexed: 11/21/2022]
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Don-Doncow N, Escobar Z, Johansson M, Kjellström S, Garcia V, Munoz E, Sterner O, Bjartell A, Hellsten R. Galiellalactone is a direct inhibitor of the transcription factor STAT3 in prostate cancer cells. J Biol Chem 2014; 289:15969-78. [PMID: 24755219 DOI: 10.1074/jbc.m114.564252] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The transcription factor STAT3 is constitutively active in several malignancies including castration-resistant prostate cancer and has been identified as a promising therapeutic target. The fungal metabolite galiellalactone, a STAT3 signaling inhibitor, inhibits the growth, both in vitro and in vivo, of prostate cancer cells expressing active STAT3 and induces apoptosis of prostate cancer stem cell-like cells expressing phosphorylated STAT3 (pSTAT3). However, the molecular mechanism of this STAT3-inhibiting effect by galiellalactone has not been clarified. A biotinylated analogue of galiellalactone (GL-biot) was synthesized to be used for identification of galiellalactone target proteins. By adding streptavidin-Sepharose beads to GL-biot-treated DU145 cell lysates, STAT3 was isolated and identified as a target protein. Confocal microscopy revealed GL-biot in both the cytoplasm and the nucleus of DU145 cells treated with GL-biot, appearing to co-localize with STAT3 in the nucleus. Galiellalactone inhibited STAT3 binding to DNA in DU145 cell lysates without affecting phosphorylation status of STAT3. Mass spectrometry analysis of recombinant STAT3 protein pretreated with galiellalactone revealed three modified cysteines (Cys-367, Cys-468, and Cys-542). Here we demonstrate with chemical and molecular pharmacological methods that galiellalactone is a cysteine reactive inhibitor that covalently binds to one or more cysteines in STAT3 and that this leads to inhibition of STAT3 binding to DNA and thus blocks STAT3 signaling without affecting phosphorylation. This further validates galiellalactone as a promising direct STAT3 inhibitor for treatment of castration-resistant prostate cancer.
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Affiliation(s)
- Nicholas Don-Doncow
- From the Division of Urological Cancers, Lund University, SE-205 02 Malmö, Sweden
| | - Zilma Escobar
- the Division of Organic Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Martin Johansson
- From the Division of Urological Cancers, Lund University, SE-205 02 Malmö, Sweden
| | - Sven Kjellström
- the Department of Biochemistry and Structural Biology, Lund University, SE-221 00 Lund, Sweden, and
| | - Victor Garcia
- the Maimonides Institute for Research in Biomedicine of Cordoba, Reina Sofia University Hospital, University of Córdoba, 14004 Córdoba, Spain
| | - Eduardo Munoz
- the Maimonides Institute for Research in Biomedicine of Cordoba, Reina Sofia University Hospital, University of Córdoba, 14004 Córdoba, Spain
| | - Olov Sterner
- the Division of Organic Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Anders Bjartell
- From the Division of Urological Cancers, Lund University, SE-205 02 Malmö, Sweden
| | - Rebecka Hellsten
- From the Division of Urological Cancers, Lund University, SE-205 02 Malmö, Sweden,
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