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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Geske L, Kauhl U, Saeed MEM, Schüffler A, Thines E, Efferth T, Opatz T. Xylochemical Synthesis and Biological Evaluation of Shancigusin C and Bletistrin G. Molecules 2021; 26:3224. [PMID: 34072126 PMCID: PMC8198954 DOI: 10.3390/molecules26113224] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 05/18/2021] [Accepted: 05/22/2021] [Indexed: 11/16/2022] Open
Abstract
The biological activities of shancigusin C (1) and bletistrin G (2), natural products isolated from orchids, are reported along with their first total syntheses. The total synthesis of shancigusin C (1) was conducted by employing the Perkin reaction to forge the central stilbene core, whereas the synthesis of bletistrin G (2) was achieved by the Wittig olefination followed by several regioselective aromatic substitution reactions. Both syntheses were completed by applying only renewable starting materials according to the principles of xylochemistry. The cytotoxic properties of shancigusin C (1) and bletistrin G (2) against tumor cells suggest suitability as a starting point for further structural variation.
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Affiliation(s)
- Leander Geske
- Department of Chemistry, Organic Chemistry Section, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany; (L.G.); (U.K.)
| | - Ulrich Kauhl
- Department of Chemistry, Organic Chemistry Section, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany; (L.G.); (U.K.)
| | - Mohamed E. M. Saeed
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudingerweg 5, 55128 Mainz, Germany;
| | - Anja Schüffler
- Institut für Biotechnologie und Wirkstoff-Forschung gGmbH, Hanns-Dieter-Hüsch-Weg 17, 55128 Mainz, Germany; (A.S.); (E.T.)
- Institute for Microbiology, Johannes Gutenberg University, Hanns-Dieter-Hüsch-Weg 17, 55128 Mainz, Germany
| | - Eckhard Thines
- Institut für Biotechnologie und Wirkstoff-Forschung gGmbH, Hanns-Dieter-Hüsch-Weg 17, 55128 Mainz, Germany; (A.S.); (E.T.)
- Institute for Microbiology, Johannes Gutenberg University, Hanns-Dieter-Hüsch-Weg 17, 55128 Mainz, Germany
| | - Thomas Efferth
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudingerweg 5, 55128 Mainz, Germany;
| | - Till Opatz
- Department of Chemistry, Organic Chemistry Section, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany; (L.G.); (U.K.)
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Affiliation(s)
- Ulrich Kauhl
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10−14, D-55128 Mainz, Germany
| | - Lars Andernach
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10−14, D-55128 Mainz, Germany
| | - Till Opatz
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10−14, D-55128 Mainz, Germany
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Ozenver N, Saeed M, Kauhl U, Guvenalp Z, Demirezer Lutfiye O, Opatz T, Efferth T. Structure determination and preliminary cytotoxicity researches of the compounds isolated from Rumex acetosella L. on leukemia cells. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- N Ozenver
- Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Sihhiye, 06100, Ankara, Turkey
| | - M Saeed
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - U Kauhl
- Institute of Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10 – 14, D-55128, Mainz, Germany
| | - Z Guvenalp
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, 25240, Erzurum, Turkey
| | - O Demirezer Lutfiye
- Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Sihhiye, 06100, Ankara, Turkey
| | - T Opatz
- Institute of Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10 – 14, D-55128, Mainz, Germany
| | - T Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
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Hong C, Schüffler A, Kauhl U, Cao J, Wu CF, Opatz T, Thines E, Efferth T. Identification of NF-κB as Determinant of Posttraumatic Stress Disorder and Its Inhibition by the Chinese Herbal Remedy Free and Easy Wanderer. Front Pharmacol 2017; 8:181. [PMID: 28428751 PMCID: PMC5382210 DOI: 10.3389/fphar.2017.00181] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 10/21/2016] [Accepted: 03/20/2017] [Indexed: 01/09/2023] Open
Abstract
Posttraumatic stress disorder (PTSD) is a mental disorder developing after exposure to traumatic events. Although psychotherapy reveals some therapeutic effectiveness, clinically sustainable cure is still uncertain. Some Chinese herbal formulae are reported to work well clinically against mental diseases in Asian countries, but the safety and their mode of action are still unclear. In this study, we investigated the mechanisms of Chinese remedy free and easy wanderer (FAEW) on PTSD. We used a reverse pharmacology approach combining clinical data to search for mechanisms of PTSD with subsequent in vitro verification and bioinformatics techniques as follows: (1) by analyzing microarray-based transcriptome-wide mRNA expression profiling of PTSD patients; (2) by investigating the effect of FAEW and the antidepressant control drug fluoxetine on the transcription factor NF-κB using reporter cell assays and western blotting; (3) by performing molecular docking and literature data mining based on phytochemical constituents of FAEW. The results suggest an involvement of inflammatory processes mediated through NF-κB in the progression of PTSD. FAEW was non-cytotoxic in vitro and inhibited NF-κB activity and p65 protein expression. FAEW's anti-inflammatory compounds, i.e., paeoniflorin, isoliquiritin, isoliquiritin apioside and ononin were evaluated for binding to IκK and p65-RelA in a molecular docking approach. Paeoniflorin, albiflorin, baicalin, isoliquiritin and liquiritin have been reported to relieve depression in vivo or in clinical trials, which might be the active ingredients for FAEW against PTSD.
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Affiliation(s)
- Chunlan Hong
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg UniversityMainz, Germany
| | - Anja Schüffler
- Institut für Biotechnologie und Wirkstoff Forschung gGmbHKaiserslautern, Germany.,Institute of Molecular Physiology, Johannes Gutenberg UniversityMainz, Germany
| | - Ulrich Kauhl
- Institute of Organic Chemistry, Johannes Gutenberg UniversityMainz, Germany
| | - Jingming Cao
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg UniversityMainz, Germany
| | - Ching-Fen Wu
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg UniversityMainz, Germany
| | - Till Opatz
- Institute of Organic Chemistry, Johannes Gutenberg UniversityMainz, Germany
| | - Eckhard Thines
- Institut für Biotechnologie und Wirkstoff Forschung gGmbHKaiserslautern, Germany.,Institute of Molecular Physiology, Johannes Gutenberg UniversityMainz, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg UniversityMainz, Germany
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Abstract
Marine isonitriles represent the largest group of natural products carrying the remarkable isocyanide moiety. Together with marine isothiocyanates and formamides, which originate from the same biosynthetic pathways, they offer diverse biological activities and in spite of their exotic nature they may constitute potential lead structures for pharmaceutical development. Among other biological activities, several marine isonitriles show antimalarial, antitubercular, antifouling and antiplasmodial effects. In contrast to terrestrial isonitriles, which are mostly derived from α-amino acids, the vast majority of marine representatives are of terpenoid origin. An overview of all known marine isonitriles and their congeners will be given and their biological and chemical aspects will be discussed.
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Affiliation(s)
- Jens Emsermann
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Ulrich Kauhl
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Till Opatz
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
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Abstract
The 3-decalinoyltetramic acid (-)-hymenosetin and its N-methyl analogue were prepared in 11 and 8 steps, respectively, from (+)-citronellal using an intramolecular Diels-Alder reaction as the key step. This method represents the first example for the synthesis of a 3-decalinoyltetramic acid with a free NH moiety. The stereochemistry of the title compound, an unnatural diastereomer, and of a decalin building block was studied in detail using circular dichroism spectroscopy in the IR and UV/VIS freqeuncy range. This allowed to determine the absolute configuration of the natural product and to plan the synthetic route.
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Affiliation(s)
- Ulrich Kauhl
- Institute of Organic Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Lars Andernach
- Institute of Organic Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Stefan Weck
- Institute of Organic Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Louis P Sandjo
- Institute of Organic Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Stefan Jacob
- Institut für Biotechnologie und Wirkstoff-Forschung gGmbH (IBWF) , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, Germany
| | - Eckhard Thines
- Institut für Biotechnologie und Wirkstoff-Forschung gGmbH (IBWF) , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, Germany.,Johannes Gutenberg-University Mainz , Institute of Biotechnology and Drug Research, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Till Opatz
- Institute of Organic Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
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