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Lei Y, Liao XJ, Xing XW, Xu SH, Zhao BX. Two new diketopiperazines from the marine sponge Dysidea sp. Nat Prod Res 2024:1-6. [PMID: 38591101 DOI: 10.1080/14786419.2024.2337116] [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: 12/09/2023] [Accepted: 03/21/2024] [Indexed: 04/10/2024]
Abstract
A chemical investigation on the marine sponge Dysidea sp. resulted in the isolation of a series of diketopiperazines, including two new compounds, dysidines A (1) and B (2) as well as six known ones (3-8). Their structures with absolute configurations were determined on the basis of UV, IR, HRMS, NMR and calculated ECD method. Additionally, the cytotoxic, anti-inflammatory, antibacterial and antiviral activities of 1-8 were also tested. However, none of them exhibited significant bioactivities.
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Affiliation(s)
- Yu Lei
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou, PR China
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2
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Ceravolo IP, Leoni LF, Krettli AU, Murta SMF, Resende DDM, Cruz MGFDML, Varejão JOS, Mendes LL, Varejão EVV, Kohlhoff M. Novel 2,5- Diketopiperazines with In Vitro Activities against Protozoan Parasites of Tropical Diseases. Pharmaceuticals (Basel) 2024; 17:223. [PMID: 38399438 PMCID: PMC10893061 DOI: 10.3390/ph17020223] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/21/2023] [Accepted: 12/23/2023] [Indexed: 02/25/2024] Open
Abstract
Malaria, Chagas disease, and leishmaniasis are tropical diseases caused by protozoan parasites of the genera Plasmodium, Trypanosoma and Leishmania, respectively. These diseases constitute a major burden on public health in several regions worldwide, mainly affecting low-income populations in economically poor countries. Severe side effects of currently available drug treatments and the emergence of resistant parasites need to be addressed by the development of novel drug candidates. Natural 2,5-Diketopiperazines (2,5-DKPs) constitute N-heterocyclic secondary metabolites with a wide range of biological activities of medicinal interest. Its structural and physicochemical properties make the 2,5-DKP ring a versatile, peptide-like, and stable pharmacophore attractive for synthetic drug design. In the present work, twenty-three novel synthetic 2,5-DKPs, previously synthesized through the versatile Ugi multicomponent reaction, were assayed for their anti-protozoal activities against P. falciparum, T. cruzi, and L. infantum. Some of the 2,5-DKPs have shown promising activities against the target protozoans, with inhibitory concentrations (IC50) ranging from 5.4 to 9.5 µg/mL. The most active compounds also show low cytotoxicity (CC50), affording selectivity indices ≥ 15. Results allowed for observing a clear relationship between the substitution pattern at the aromatic rings of the 2,5-DKPs and their corresponding anti-Plasmodium activity. Finally, calculated drug-like properties of the compounds revealed points for further structure optimization of promising drug candidates.
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Affiliation(s)
- Isabela P. Ceravolo
- Laboratory of Immunopathology, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (I.P.C.); (L.F.L.); (A.U.K.)
| | - Letícia F. Leoni
- Laboratory of Immunopathology, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (I.P.C.); (L.F.L.); (A.U.K.)
| | - Antoniana U. Krettli
- Laboratory of Immunopathology, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (I.P.C.); (L.F.L.); (A.U.K.)
| | - Silvane M. F. Murta
- Laboratory of Functional Genomics of Parasites, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (S.M.F.M.); (D.d.M.R.); (M.G.F.d.M.L.C.)
| | - Daniela de M. Resende
- Laboratory of Functional Genomics of Parasites, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (S.M.F.M.); (D.d.M.R.); (M.G.F.d.M.L.C.)
| | - Mariza G. F. de M. L. Cruz
- Laboratory of Functional Genomics of Parasites, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (S.M.F.M.); (D.d.M.R.); (M.G.F.d.M.L.C.)
| | - Jodieh O. S. Varejão
- Laboratory of Natural Product Chemistry Studies and Organic Synthesis, Federal University of Viçosa (UFV), Av. PH Rolfs, s/n, Viçosa 36570-900, Brazil; (J.O.S.V.); (L.L.M.); (E.V.V.V.)
| | - Lorena L. Mendes
- Laboratory of Natural Product Chemistry Studies and Organic Synthesis, Federal University of Viçosa (UFV), Av. PH Rolfs, s/n, Viçosa 36570-900, Brazil; (J.O.S.V.); (L.L.M.); (E.V.V.V.)
| | - Eduardo V. V. Varejão
- Laboratory of Natural Product Chemistry Studies and Organic Synthesis, Federal University of Viçosa (UFV), Av. PH Rolfs, s/n, Viçosa 36570-900, Brazil; (J.O.S.V.); (L.L.M.); (E.V.V.V.)
| | - Markus Kohlhoff
- Laboratory of Bioactive Natural Product Chemistry, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil
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Virués-Segovia JR, Millán C, Pinedo C, González-Rodríguez VE, Papaspyrou S, Zorrilla D, Mackenzie TA, Ramos MC, de la Cruz M, Aleu J, Durán-Patrón R. New Eremophilane-Type Sesquiterpenes from the Marine Sediment-Derived Fungus Emericellopsis maritima BC17 and Their Cytotoxic and Antimicrobial Activities. Mar Drugs 2023; 21:634. [PMID: 38132955 PMCID: PMC10745059 DOI: 10.3390/md21120634] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/30/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
The fungal strain BC17 was isolated from sediments collected in the intertidal zone of the inner Bay of Cadiz and characterized as Emericellopsis maritima. On the basis of the one strain-many compounds (OSMAC) approach, four new eremophilane-type sesquiterpenes (1-4), together with thirteen known derivatives (5-17) and two reported diketopiperazines (18, 19), were isolated from this strain. The chemical structures and absolute configurations of the new compounds were determined through extensive NMR and HRESIMS spectroscopic studies and ECD calculation. Thirteen of the isolated eremophilanes were examined for cytotoxic and antimicrobial activities. PR toxin (16) exhibited cytotoxic activity against HepG2, MCF-7, A549, A2058, and Mia PaCa-2 human cancer cell lines with IC50 values ranging from 3.75 to 33.44 µM. (+)-Aristolochene (10) exhibited selective activity against the fungal strains Aspergillus fumigatus ATCC46645 and Candida albicans ATCC64124 at 471 µM.
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Affiliation(s)
- Jorge R. Virués-Segovia
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
- Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Carlos Millán
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
| | - Cristina Pinedo
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
- Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Victoria E. González-Rodríguez
- Laboratorio de Microbiología, Departamento de Biomedicina, Biotecnología y Salud Pública, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain;
| | - Sokratis Papaspyrou
- Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain;
| | - David Zorrilla
- Departamento de Química Física, Facultad de Ciencias, Universidad de Cádiz, Campus Universitario Puerto Real s/n, Puerto Real, 11510 Cádiz, Spain;
| | - Thomas A. Mackenzie
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, 18016 Granada, Spain; (T.A.M.); (M.C.R.); (M.d.l.C.)
| | - María C. Ramos
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, 18016 Granada, Spain; (T.A.M.); (M.C.R.); (M.d.l.C.)
| | - Mercedes de la Cruz
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, 18016 Granada, Spain; (T.A.M.); (M.C.R.); (M.d.l.C.)
| | - Josefina Aleu
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
- Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Rosa Durán-Patrón
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
- Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
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Pacheco-Tapia R, Ortíz S, Jargeat P, Amasifuen C, Vansteelandt M, Haddad M. Exploration of the Production of Three Thio diketopiperazines by an Endophytic Fungal Strain of Cophinforma mamane. Chem Biodivers 2023; 20:e202201087. [PMID: 36919620 DOI: 10.1002/cbdv.202201087] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/10/2023] [Accepted: 03/12/2023] [Indexed: 03/16/2023]
Abstract
Endophytic fungi possess a versatile metabolism which is related to their ability to live in diverse ecological niches. While culturing under laboratory conditions, their metabolism is mainly influenced by the culture media, time of incubation and other physicochemical factors. In this study, we focused on the production of 3 thiodiketopiperazines (TDKPs) botryosulfuranols A-C produced by an endophytic strain of Cophinforma mamane isolated from the leaves of Bixa orellana L collected in the Peruvian Amazon. We studied the time-course production of botryosulfuranols A-C during 28 days and evaluated the variations in the production of secondary metabolites, including the TDKPs, produced by C. mamane in response to different culture media, light versus dark conditions and different incubation times. We observed a short time-frame production of botryosulfuranol C while its production was significantly affected by the light conditions and nutrients of the culture media. Botryosulfuranols A and B showed a similar production pattern and a similar response to culturing conditions. Molecular networking allowed us to detect three compounds related to TDKPs that will be the focus of future experiments.
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Affiliation(s)
- Romina Pacheco-Tapia
- UMR 152 Pharma Dev, Université de Toulouse, IRD, UPS, France
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Perú
| | - Sergio Ortíz
- Therapeutic Innovation Laboratory UMR CNRS 7200, Faculty of Pharmacy, Université de Strasbourg, Strasbourg, France
| | - Patricia Jargeat
- Laboratoire Evolution et Diversité Biologique UMR 5174, Université de Toulouse, CNRS, IRD, France
| | - Carlos Amasifuen
- Instituto Nacional de Innovación Agraria, Dirección de Recursos Genéticos y Biotecnología, Avenida La Molina 1981, Lima, 15024, Perú
- Present address: Epigénomique Fonctionnelle et Physiologie Moléculaire Du Diabète et Maladies Associées UMR 1283/8199, Université de Lille, Lille, France
| | | | - Mohamed Haddad
- UMR 152 Pharma Dev, Université de Toulouse, IRD, UPS, France
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Stelmasiewicz M, Świątek Ł, Ludwiczuk A. Chemical and Biological Studies of Endophytes Isolated from Marchantia polymorpha. Molecules 2023; 28. [PMID: 36903448 DOI: 10.3390/molecules28052202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023] Open
Abstract
Natural bioresources, predominantly plants, have always been regarded as the richest source of drugs for diseases threatening humanity. Additionally, microorganism-originating metabolites have been extensively explored as weapons against bacterial, fungal, and viral infections. However, the biological potential of metabolites produced by plant endophytes still remains understudied, despite significant efforts reflected in recently published papers. Thus, our goal was to evaluate the metabolites produced by endophytes isolated from Marchantia polymorpha and to study their biological properties, namely anticancer and antiviral potential. The cytotoxicity and anticancer potential were assessed using the microculture tetrazolium technique (MTT) against non-cancerous VERO cells and cancer cells-namely the HeLa, RKO, and FaDu cell lines. The antiviral potential was tested against the human herpesvirus type-1 replicating in VERO cells by observing the influence of the extract on the virus-infected cells and measuring the viral infectious titer and viral load. The most characteristic metabolites identified in the ethyl acetate extract and fractions obtained by use of centrifugal partition chromatography (CPC) were volatile cyclic dipeptides, cyclo(l-phenylalanyl-l-prolyl), cyclo(l-leucyl-l-prolyl), and their stereoisomers. In addition to the diketopiperazine derivatives, this liverwort endophyte also produced arylethylamides and fatty acids amides. The presence of N-phenethylacetamide and oleic acid amide was confirmed. The endophyte extract and isolated fractions showed a potential selective anticancer influence on all tested cancer cell lines. Moreover, the extract and the first separated fraction noticeably diminished the formation of the HHV-1-induced cytopathic effect and reduced the virus infectious titer by 0.61-1.16 log and the viral load by 0.93-1.03 log. Endophytic organisms produced metabolites with potential anticancer and antiviral activity; thus, future studies should aim to isolate pure compounds and evaluate their biological activities.
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Poonia BK, Sidhu A, Sharma AB. Cyclo(l-proline-l-serine) Dipeptide Suppresses Seed Borne Fungal Pathogens of Rice: Altered Cellular Membrane Integrity of Fungal Hyphae and Seed Quality Benefits. J Agric Food Chem 2022; 70:2160-2168. [PMID: 35142498 DOI: 10.1021/acs.jafc.1c07659] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Five proline-containing diketopiperazines (Pro-DKPs) produced by antagonistic microorganisms as secondary metabolites were selected and synthesized under laboratory conditions. Out of five synthesized Pro-DKPs, cyclo(l-Pro-l-Ser) (DKP-6) revealed the best inhibition of fungal pathogens (Fusarium verticillioides and Fusarium fujikuroi) of rice under in vitro conditions with effective doses lower than standard fungicide carbendazim. DKP-6 induced stress on the fungal cell membrane integrity, which was revealed by calcofluor white and propidium iodide assays, endorsed by ultra-microscopic details and soluble protein leakage assays. In vivo seed treatment of infested rice seeds with DKP-6 at 2000 μg/mL for 10 h of seed treatment inflicted best reduction in seed rot and seedling blight with respect to control and carbendazim. Significant enhancement in seedling quality parameters were also observed. The work presented the strong influence of cyclo(l-Pro-l-Ser) as a mycocidal seed treatment agent better than synthetic toxic fungicides for rice.
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Affiliation(s)
| | - Anjali Sidhu
- Department of Soil Science, Punjab Agricultural University, Ludhiana 141004, India
| | - Anju Bala Sharma
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana 141004, India
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Girich EV, Rasin AB, Popov RS, Yurchenko EA, Chingizova EA, Trinh PTH, Ngoc NTD, Pivkin MV, Zhuravleva OI, Yurchenko AN. New Tripeptide Derivatives Asperripeptides A-C from Vietnamese Mangrove-Derived Fungus Aspergillus terreus LM.5.2. Mar Drugs 2022; 20:77. [PMID: 35049932 DOI: 10.3390/md20010077] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/12/2022] [Accepted: 01/13/2022] [Indexed: 02/01/2023] Open
Abstract
Three new tripeptide derivatives asterripeptides A-C (1-3) were isolated from Vietnamese mangrove-derived fungus Aspergillus terreus LM.5.2. Structures of isolated compounds were determined by a combination of NMR and ESIMS techniques. The absolute configurations of all stereocenters were determined using the Murfey's method. The isolated compounds 1-3 contain a rare fungi cinnamic acid residue. The cytotoxicity of isolated compounds against several cancer cell lines and inhibition ability of sortase A from Staphylococcus aureus of asterripeptides A-C were investigated.
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Jothi R, Hari Prasath N, Gowrishankar S, Pandian SK. Bacterial Quorum-Sensing Molecules as Promising Natural Inhibitors of Candida albicans Virulence Dimorphism: An In Silico and In Vitro Study. Front Cell Infect Microbiol 2021; 11:781790. [PMID: 34926324 PMCID: PMC8677694 DOI: 10.3389/fcimb.2021.781790] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 09/23/2021] [Accepted: 11/12/2021] [Indexed: 11/25/2022] Open
Abstract
Farnesol, a self-secreted quorum-sensing molecule (QSM) of Candida albicans, has been known to limit yeast-to-hyphal transition by blocking the RAS1-cAMP-PKA pathway. In a similar fashion, certain bacterial QSMs have also been reported to be successful in attenuating C. albicans biofilm and hyphal formation at relatively high cell density. This prompted us to investigate the antihyphal efficacy of certain bacterial QSMs through virtual docking against seminal drug targets, viz., CYCc and RAS1, that have been reported to be the hallmark players in C. albicans dimorphic virulence cascade. Against this backdrop, 64 QSMs belonging to five different bacterial QS signaling systems were subjected to initial virtual screening with farnesol as reference. Data of the virtual screening unveiled QSMs belonging to diketopiperazines (DKPs), i.e., 3-benzyl-6-isobutylidene-2,5-piperazinedione (QSSM 1157) and cyclo(l-Pro-l-Leu) (QSSM 1112), as potential inhibitors of CYCc and RAS1 with binding energies of -8.2 and -7.3 kcal mol-1, respectively. Further, the molecular dynamics simulations (for 50 ns) of CYCc-QSSM 1157 and RAS1-QSSM 1112 complexes revealed the mean ligand root mean square deviation (RMSD) values of 0.35 and 0.27 Å, respectively, which endorsed the rigid nature, less fluctuation in binding stiffness, and conformation of binding complexes. Furthermore, the identified two QSMs were found to be good in solubility, absorption, and permeation and less toxic in nature, as revealed by pharmacokinetics and toxicity analyses. In addition, the in vitro antihyphal assays using liquid and solid media, germ-tube experiment, and microscopic analysis strongly validated DKP-QSSM 1112 as a promising inhibitor of hyphal transition. Taken together, the present study unequivocally proves that DKPs can be used as potent inhibitors of C. albicans virulence dimorphism.
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Bojarska J, Mieczkowski A, Ziora ZM, Skwarczynski M, Toth I, Shalash AO, Parang K, El-Mowafi SA, Mohammed EHM, Elnagdy S, AlKhazindar M, Wolf WM. Cyclic Dipeptides: The Biological and Structural Landscape with Special Focus on the Anti-Cancer Proline-Based Scaffold. Biomolecules 2021; 11:1515. [PMID: 34680148 PMCID: PMC8533947 DOI: 10.3390/biom11101515] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [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: 09/18/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022] Open
Abstract
Cyclic dipeptides, also know as diketopiperazines (DKP), the simplest cyclic forms of peptides widespread in nature, are unsurpassed in their structural and bio-functional diversity. DKPs, especially those containing proline, due to their unique features such as, inter alia, extra-rigid conformation, high resistance to enzyme degradation, increased cell permeability, and expandable ability to bind a diverse of targets with better affinity, have emerged in the last years as biologically pre-validated platforms for the drug discovery. Recent advances have revealed their enormous potential in the development of next-generation theranostics, smart delivery systems, and biomaterials. Here, we present an updated review on the biological and structural profile of these appealing biomolecules, with a particular emphasis on those with anticancer properties, since cancers are the main cause of death all over the world. Additionally, we provide a consideration on supramolecular structuring and synthons, based on the proline-based DKP privileged scaffold, for inspiration in the design of compound libraries in search of ideal ligands, innovative self-assembled nanomaterials, and bio-functional architectures.
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Affiliation(s)
- Joanna Bojarska
- Faculty of Chemistry, Institute of General & Inorganic Chemistry, Technical University of Lodz, 90-924 Lodz, Poland;
| | - Adam Mieczkowski
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland;
| | - Zyta M. Ziora
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia; (Z.M.Z.); (I.T.)
| | - Mariusz Skwarczynski
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (M.S.); (A.O.S.)
| | - Istvan Toth
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia; (Z.M.Z.); (I.T.)
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (M.S.); (A.O.S.)
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
| | - Ahmed O. Shalash
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (M.S.); (A.O.S.)
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, School of Pharmacy, Chapman University, Irvine, CA 92618, USA; (K.P.); (S.A.E.-M.); (E.H.M.M.)
| | - Shaima A. El-Mowafi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, School of Pharmacy, Chapman University, Irvine, CA 92618, USA; (K.P.); (S.A.E.-M.); (E.H.M.M.)
| | - Eman H. M. Mohammed
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, School of Pharmacy, Chapman University, Irvine, CA 92618, USA; (K.P.); (S.A.E.-M.); (E.H.M.M.)
| | - Sherif Elnagdy
- Botany Department, Faculty of Science, Cairo University, Giza 12613, Egypt; (S.E.); (M.A.)
| | - Maha AlKhazindar
- Botany Department, Faculty of Science, Cairo University, Giza 12613, Egypt; (S.E.); (M.A.)
| | - Wojciech M. Wolf
- Faculty of Chemistry, Institute of General & Inorganic Chemistry, Technical University of Lodz, 90-924 Lodz, Poland;
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Domzalski A, Margent L, Vigo V, Dewan F, Pilarsetty NVK, Xu Y, Kawamura A. Unambiguous Stereochemical Assignment of Cyclo(Phe-Pro), Cyclo(Leu-Pro), and Cyclo(Val-Pro) by Electronic Circular Dichroic Spectroscopy. Molecules 2021; 26:molecules26195981. [PMID: 34641525 PMCID: PMC8512403 DOI: 10.3390/molecules26195981] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/23/2021] [Accepted: 09/28/2021] [Indexed: 11/21/2022] Open
Abstract
2,5-diketopiperazines (DKPs) are cyclic dipeptides ubiquitously found in nature. In particular, cyclo(Phe-Pro), cyclo(Leu-Pro), and cyclo(Val-Pro) are frequently detected in many microbial cultures. Each of these DKPs has four possible stereoisomers due to the presence of two chirality centers. However, absolute configurations of natural DKPs are often ambiguous due to the lack of a simple, sensitive, and reproducible method for stereochemical assignment. This is an important problem because stereochemistry is a key determinant of biological activity. Here, we report a synthetic DKP library containing all stereoisomers of cyclo(Phe-Pro), cyclo(Leu-Pro), and cyclo(Val-Pro). The library was subjected to spectroscopic characterization using mass spectrometry, NMR, and electronic circular dichroism (ECD). It turned out that ECD can clearly differentiate DKP stereoisomers. Thus, our ECD dataset can serve as a reference for unambiguous stereochemical assignment of cyclo(Phe-Pro), cyclo(Leu-Pro), and cyclo(Val-Pro) samples from natural sources. The DKP library was also subjected to a biological screening using assays for E. coli growth and biofilm formation, which revealed distinct biological effects of cyclo(D-Phe-L-Pro).
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Affiliation(s)
- Alison Domzalski
- Biochemistry Ph.D. Program, The Graduate Center of CUNY, New York, NY 10016, USA; (A.D.); (F.D.); (Y.X.)
- Department of Chemistry, Hunter College of CUNY, New York, NY 10065, USA; (L.M.); (V.V.)
| | - Liliana Margent
- Department of Chemistry, Hunter College of CUNY, New York, NY 10065, USA; (L.M.); (V.V.)
| | - Valeria Vigo
- Department of Chemistry, Hunter College of CUNY, New York, NY 10065, USA; (L.M.); (V.V.)
| | - Faizunnahar Dewan
- Biochemistry Ph.D. Program, The Graduate Center of CUNY, New York, NY 10016, USA; (A.D.); (F.D.); (Y.X.)
- Department of Chemistry, Hunter College of CUNY, New York, NY 10065, USA; (L.M.); (V.V.)
| | | | - Yujia Xu
- Biochemistry Ph.D. Program, The Graduate Center of CUNY, New York, NY 10016, USA; (A.D.); (F.D.); (Y.X.)
- Department of Chemistry, Hunter College of CUNY, New York, NY 10065, USA; (L.M.); (V.V.)
- Chemistry Ph.D. Program, The Graduate Center of CUNY, New York, NY 10016, USA
| | - Akira Kawamura
- Biochemistry Ph.D. Program, The Graduate Center of CUNY, New York, NY 10016, USA; (A.D.); (F.D.); (Y.X.)
- Department of Chemistry, Hunter College of CUNY, New York, NY 10065, USA; (L.M.); (V.V.)
- Chemistry Ph.D. Program, The Graduate Center of CUNY, New York, NY 10016, USA
- Correspondence: ; Tel.: +1-212-772-5339
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11
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Cai J, Chen C, Tan Y, Chen W, Luo X, Luo L, Yang B, Liu Y, Zhou X. Bioactive Polyketide and Diketopiperazine Derivatives from the Mangrove-Sediment-Derived Fungus Aspergillus sp. SCSIO41407. Molecules 2021; 26:4851. [PMID: 34443439 DOI: 10.3390/molecules26164851] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/03/2021] [Accepted: 08/09/2021] [Indexed: 12/19/2022] Open
Abstract
Ten polyketide derivatives (1–10), including a new natural product named (E)-2,4-dihydroxy-3-methyl-6-(2-oxopent-3-en-1-yl) benzaldehyde (1), and five known diketopiperazines (11–15), were isolated from the mangrove-sediment-derived fungus Aspergillus sp. SCSIO41407. The structures of 1–15 were determined via NMR and MS spectroscopic analysis. In a variety of bioactivity screening, 3 showed weak cytotoxicity against the A549 cell line, and 2 exhibited weak antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA). Compounds 3, 5, and 6 showed inhibition against acetylcholinesterase (AChE) with IC50 values of 23.9, 39.9, and 18.6 μM. Compounds 11, 12, and 14 exhibited obvious inhibitory activities of lipopolysaccharide (LPS)-induced nuclear factor-κB (NF-κB) with IC50 values of 19.2, 20.9, and 8.7 μM, and they also suppressed RANKL-induced osteoclast differentiation in bone marrow macrophages cells (BMMCs), with the concentration of 5 μM. In silico molecular docking with AChE and NF-κB p65 protein were also performed to understand the inhibitory activities, and 1, 11–14 showed obvious protein/ligand-binding effects to the NF-κB p65 protein.
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12
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Song Z, Hou Y, Yang Q, Li X, Wu S. Structures and Biological Activities of Diketopiperazines from Marine Organisms: A Review. Mar Drugs 2021; 19:403. [PMID: 34436242 DOI: 10.3390/md19080403] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/16/2021] [Accepted: 07/18/2021] [Indexed: 12/12/2022] Open
Abstract
Diketopiperazines are potential structures with extensive biological functions, which have attracted much attention of natural product researchers for a long time. These compounds possess a stable six-membered ring, which is an important pharmacophore. The marine organisms have especially been proven to be a wide source for discovering diketopiperazine derivatives. In recent years, more and more interesting bioactive diketopiperazines had been found from various marine habitats. This review article is focused on the new 2,5-diketopiperazines derived from marine organisms (sponges and microorganisms) reported from the secondary half-year of 2014 to the first half of the year of 2021. We will comment their chemical structures, biological activities and sources. The objective is to assess the merit of these compounds for further study in the field of drug discovery.
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13
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Scarel M, Marchesan S. Diketopiperazine Gels: New Horizons from the Self-Assembly of Cyclic Dipeptides. Molecules 2021; 26:3376. [PMID: 34204905 PMCID: PMC8199760 DOI: 10.3390/molecules26113376] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 05/22/2021] [Revised: 06/01/2021] [Accepted: 06/01/2021] [Indexed: 02/07/2023] Open
Abstract
Cyclodipeptides (CDPs) or 2,5-diketopiperazines (DKPs) can exert a variety of biological activities and display pronounced resistance against enzymatic hydrolysis as well as a propensity towards self-assembly into gels, relative to the linear-dipeptide counterparts. They have attracted great interest in a variety of fields spanning from functional materials to drug discovery. This concise review will analyze the latest advancements in their synthesis, self-assembly into gels, and their more innovative applications.
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Affiliation(s)
- Marco Scarel
- Chemical and Pharmaceutical Sciences Department, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy;
| | - Silvia Marchesan
- Chemical and Pharmaceutical Sciences Department, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy;
- National Interuniversity Consortium of Materials Science and Technology (INSTM), University of Trieste, 34127 Trieste, Italy
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14
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Huang DY, Nong XH, Zhang YQ, Xu W, Sun LY, Zhang T, Chen GY, Han CR. Two new 2,5-diketopiperazine derivatives from mangrove-derived endophytic fungus Nigrospora camelliae-sinensis S30. Nat Prod Res 2021; 36:3651-3656. [PMID: 33517796 DOI: 10.1080/14786419.2021.1878168] [Citation(s) in RCA: 7] [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] [Indexed: 01/18/2023]
Abstract
Two new 2,5-diketopiperazines derivatives (1-2), together with eight known analogs (3-10), were isolated from a culture broth of an endophytic fungus Nigrospora camelliae-sinensis S30, derived from mangrove Lumnitzera littorea. Their complete structures were determined by a detailed analysis of spectroscopic data and ECD calculations. The antimicrobial activity and neuroprotective activity of these isolated compounds were also evaluated.
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Affiliation(s)
- Dan-Yu Huang
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China.,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, Hainan, China
| | - Xu-Hua Nong
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China.,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, Hainan, China
| | - Yu-Qin Zhang
- Pharmacy College, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, China
| | - Wei Xu
- Pharmacy College, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, China
| | - Long-Yu Sun
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China.,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, Hainan, China
| | - Tao Zhang
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China.,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, Hainan, China
| | - Guang-Ying Chen
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China.,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, Hainan, China
| | - Chang-Ri Han
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China.,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, Hainan, China.,Hainan Vocational University of Science and Technology, Haikou, Hainan, China
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15
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Thesmar P, Coomar S, Prescimone A, Häussinger D, Gillingham D, Baudoin O. Divergent Synthesis of Bioactive Dithiodiketopiperazine Natural Products Based on a Double C(sp 3 )-H Activation Strategy. Chemistry 2020; 26:15298-15312. [PMID: 32852800 DOI: 10.1002/chem.202003683] [Citation(s) in RCA: 4] [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: 08/07/2020] [Revised: 08/26/2020] [Indexed: 12/28/2022]
Abstract
This article provides a detailed report of our efforts to synthesize the dithiodiketopiperazine (DTP) natural products (-)-epicoccin G and (-)-rostratin A using a double C(sp3 )-H activation strategy. The strategy's viability was first established on a model system lacking the C8/C8' alcohols. Then, an efficient stereoselective route including an organocatalytic epoxidation was secured to access a key bis-triflate substrate. This bis-triflate served as the functional handles for the key transformation of the synthesis: a double C(sp3 )-H activation. The successful double activation opened access to a common intermediate for both natural products in high overall yield and on a multigram scale. After several unsuccessful attempts, this intermediate was efficiently converted to (-)-epicoccin G and to the more challenging (-)-rostratin A via suitable oxidation/reduction and protecting group sequences, and via a final sulfuration that occurred in good yield and high diastereoselectivity. These efforts culminated in the synthesis of (-)-epicoccin G and (-)-rostratin A in high overall yields (19.6 % over 14 steps and 12.7 % over 17 steps, respectively), with the latter being obtained on a 500 mg scale. Toxicity assessments of these natural products and several analogues (including the newly synthesized epicoccin K) in the leukemia cell line K562 confirmed the importance of the disulfide bridge for activity and identified dianhydrorostratin A as a 20x more potent analogue.
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Affiliation(s)
- Pierre Thesmar
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Seemon Coomar
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Alessandro Prescimone
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Daniel Häussinger
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Dennis Gillingham
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
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16
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Ding Y, Zhu X, Hao L, Zhao M, Hua Q, An F. Bioactive Indolyl Diketopiperazines from the Marine Derived Endophytic Aspergillus versicolor DY180635. Mar Drugs 2020; 18:E338. [PMID: 32605149 PMCID: PMC7401283 DOI: 10.3390/md18070338] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 06/03/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 01/25/2023] Open
Abstract
Four new indolyl diketopiperazines, aspamides A-E (1-4) and two new diketopiperazines, aspamides F-G (5-6), along with 11 known diketopiperazines and intermediates were isolated from the solid culture of Aspergillus versicolor, which is an endophyte with the sea crab (Chiromantes haematocheir). Further chiral high-performance liquid chromatography resolution gave enantiomers (+)- and (-)-4, respectively. The structures and absolute configurations of compounds 1-6 were determined by the comprehensive analyses of nuclear magnetic resonance (NMR), high-resolution mass spectrometry (HR-MS), and electronic circular dichroism (ECD) calculation. All isolated compounds were selected for the virtual screening on the coronavirus 3-chymoretpsin-like protease (Mpro) of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), and the docking scores of compounds 1-2, 5, 6, 8 and 17 were top among all screened molecules, may be helpful in fighting with Corona Virus Disease-19 (COVID-19) after further studies.
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Affiliation(s)
| | | | | | | | | | - Faliang An
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China; (Y.D.); (X.Z.); (L.H.); (M.Z.); (Q.H.)
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17
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Ding L, Xu P, Zhang W, Yuan Y, He X, Su D, Shi Y, Naman CB, Yan X, Wu B, Lazaro JEH, Li S, He S. Three New Diketopiperazines from the Previously Uncultivable Marine Bacterium Gallaecimonas mangrovi HK-28 Cultivated by iChip. Chem Biodivers 2020; 17:e2000221. [PMID: 32347603 DOI: 10.1002/cbdv.202000221] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 03/25/2020] [Accepted: 04/28/2020] [Indexed: 11/09/2022]
Abstract
The in situ application of iChip cultivation in mangrove sediment from Hainan province, China, led to the isolation of a novel bacterial species Gallaecimonas mangrovi HK-28. The extract of G. mangrovi HK-28 exhibited antibiotic activity against the aquatic pathogen Vibrio harveyi, and its chemical constituents were further investigated by bioactivity-guided isolation. Three new diketopiperazines, gallaecimonamides A-C, were accordingly isolated from the AcOEt extract of the fermentation broth of G. mangrovi HK-28. The planar structures of gallaecimonamides A-C were determined using HR-ESI-MS together with 1D- and 2D-NMR. The absolute configurations of gallaecimonamides A-C were assigned by optical rotation, NOESY experiment and TDDFT ECD calculations. The in vitro antibacterial and antimalarial activities of gallaecimonamides A-C were assessed. Gallaecimonamide A was found to display antibacterial activity against V. harveyi with a MIC value of 50 μm. However, gallaecimonamides B and C showed no antibacterial activity against V. harveyi (MIC >300 μm). In addition, all the isolates did not exhibit any inhibitory activities against V. parahaemolyticus (MIC>300 μm) and Plasmodium falciparum W2 (EC50 >100 μg/mL).
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Affiliation(s)
- Lijian Ding
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - Peng Xu
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - Weiyan Zhang
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - Ye Yuan
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - Xiaoping He
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - Dengquan Su
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - Yutong Shi
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - C Benjamin Naman
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - Xiaojun Yan
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
| | - Bin Wu
- Ocean College, Zhejiang University, Hangzhou, 310058, P. R. China
| | - J Enrico H Lazaro
- National Institute of Molecular Biology and Biotechnology, University of the Philippines Diliman, Quezon, 1101, Philippines
| | - Shengying Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong, 266237, P. R. China
| | - Shan He
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315832, P. R. China
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18
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Pícha J, Buděšínský M, Mitrová K, Jiráček J. Acid-Stable Ester Linkers for the Solid-Phase Synthesis of Immobilized Peptides. Chempluschem 2020; 85:1297-1306. [PMID: 32558358 DOI: 10.1002/cplu.202000246] [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: 03/27/2020] [Revised: 05/28/2020] [Indexed: 11/09/2022]
Abstract
A series of N-terminally Fmoc-protected linkers of the general formula Fmoc-X-CO-O-Y-COOH have been prepared, where X is -NH-CH2 -CH2 - or -p-(aminomethyl)phenyl- and Y is -(CH2 )n - (n is 1 or 4) or -p-(methyl)phenyl-. These linkers can easily be covalently attached via their C-terminal carboxyl group to a resin bearing a free amino group. After cleavage of the N-terminal Fmoc group, the linkers can be extended by standard solid-phase peptide synthesis techniques. These ester linkers are acid-stable and resistant to the base-mediated diketopiperazine formation that often occurs during the synthesis of ester-bound peptides; they are stable at neutral pH in aqueous buffers for days but can be effectively cleaved with 0.1 m NaOH or aq. ammonia within minutes or hours, respectively. These properties make these ester handles well suited for use as linkers for the solid-phase peptide synthesis of immobilized peptides when the stable on-resin immobilization of the peptides and the testing of their biological properties in aqueous buffers at neutral pH are necessary.
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Affiliation(s)
- Jan Pícha
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Miloš Buděšínský
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Katarína Mitrová
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Jiří Jiráček
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
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19
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Carrieri R, Borriello G, Piccirillo G, Lahoz E, Sorrentino R, Cermola M, Censi SB, Grauso L, Mangoni A, Vinale F. Antibiotic Activity of a Paraphaeosphaeria sporulosa-Produced Diketopiperazine against Salmonella enterica. J Fungi (Basel) 2020; 6:jof6020083. [PMID: 32531985 PMCID: PMC7344678 DOI: 10.3390/jof6020083] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/06/2020] [Accepted: 06/07/2020] [Indexed: 11/16/2022] Open
Abstract
A diketopiperazine has been purified from a culture filtrate of the endophytic fungus Paraphaeosphaeria sporulosa, isolated from healthy tissues of strawberry plants in a survey of microbes as sources of anti-bacterial metabolites. Its structure has been determined by nuclear magnetic resonance (NMR) and liquid chromatography-mass spectrometry (LC-MS) analyses and was found to be identical to cyclo(L-Pro-L-Phe) purified from species of other fungal genera. This secondary metabolite has been selected following bioguided-assay fractionation against two strains of Salmonella enterica, the causal agent of bovine gastroenteritis. The diketopiperazine cyclo(L-Pro-L-Phe), isolated for the first time from Paraphaeosphaeria species, showed minimum inhibitory concentration (MIC) values of 71.3 and 78.6 μg/mL against the two S. enterica strains. This finding may be significant in limiting the use of synthetic antibiotics in animal husbandry and reducing the emergence of bacterial multidrug resistance. Further in vivo experiments of P. sporulosa diketopiperazines are important for the future application of these metabolites.
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Affiliation(s)
- Raffaele Carrieri
- Consiglio per la ricerca in agricoltura e l’economia agraria, Cerealicoltura e Colture Industriali. Via Torrino, 2; I-81100 Caserta, Italy; (R.C.); (G.P.); (E.L.); (R.S.); (M.C.)
| | - Giorgia Borriello
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, Via Salute, 2; Portici, 80055 Napoli, Italy;
| | - Giulio Piccirillo
- Consiglio per la ricerca in agricoltura e l’economia agraria, Cerealicoltura e Colture Industriali. Via Torrino, 2; I-81100 Caserta, Italy; (R.C.); (G.P.); (E.L.); (R.S.); (M.C.)
| | - Ernesto Lahoz
- Consiglio per la ricerca in agricoltura e l’economia agraria, Cerealicoltura e Colture Industriali. Via Torrino, 2; I-81100 Caserta, Italy; (R.C.); (G.P.); (E.L.); (R.S.); (M.C.)
| | - Roberto Sorrentino
- Consiglio per la ricerca in agricoltura e l’economia agraria, Cerealicoltura e Colture Industriali. Via Torrino, 2; I-81100 Caserta, Italy; (R.C.); (G.P.); (E.L.); (R.S.); (M.C.)
| | - Michele Cermola
- Consiglio per la ricerca in agricoltura e l’economia agraria, Cerealicoltura e Colture Industriali. Via Torrino, 2; I-81100 Caserta, Italy; (R.C.); (G.P.); (E.L.); (R.S.); (M.C.)
| | | | - Laura Grauso
- Dipartimento di Agraria, Università degli Studi di Napoli Federico II. Via Università, 100; Portici, 80055 Napoli, Italy;
| | - Alfonso Mangoni
- Dipartimento di Farmacia, Università degli Studi di Napoli Federico II. Via Domenico Montesano, 49; 80131 Napoli, Italy;
| | - Francesco Vinale
- Dipartimento di Medicina Veterinaria e Produzioni Animali—Università degli Studi di Napoli Federico II. Via Federico Delpino, 1; 80137 Napoli, Italy
- Consiglio Nazionale delle Ricerche, Istituto per la Protezione Sostenibile delle Piante, Via Università, 133, Portici, 80131 Napoli, Italy
- Correspondence:
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20
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Díaz MA, González SN, Alberto MR, Arena ME. Human probiotic bacteria attenuate Pseudomonas aeruginosa biofilm and virulence by quorum-sensing inhibition. Biofouling 2020; 36:597-609. [PMID: 32573275 DOI: 10.1080/08927014.2020.1783253] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 03/12/2020] [Revised: 06/04/2020] [Accepted: 06/11/2020] [Indexed: 06/11/2023]
Abstract
This work investigated chloroform extracts from culture supernatants of two human probiotic bacteria, Lactobacillus casei CRL 431 and Lactobacillus acidophilus CRL 730 for the production of virulence factors and quorum sensing (QS) interference against three Pseudomonas aeruginosa strains. Both extracts inhibited biofilm biomass (up to 50%), biofilm metabolic activity (up to 39%), the production of the enzyme elastase (up to 63%) and pyocyanin (up to 77%), and decreased QS, without presenting any antibacterial acgivity. In addition, the chloroform extracts of both strains disrupted preformed biofilms of the three strains of P. aeruginosa analyzed (up to 40%). GC-MS analysis revealed that the major compounds detected in the bioactive extracts were four diketopiperazines. This study suggests that the metabolites of L. casei and L. acidophilus could be a promising alternative to combat the pathogenicity of P. aeruginosa.
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Affiliation(s)
- Myriam Anabel Díaz
- Instituto de Biotecnología Farmacéutica y Alimentaria (INBIOFAL), CONICET-UNT, Tucumán, Argentina
| | - Silvia Nelina González
- Instituto de Biotecnología Farmacéutica y Alimentaria (INBIOFAL), CONICET-UNT, Tucumán, Argentina
- Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán (UNT), Tucumán, Argentina
| | - María Rosa Alberto
- Instituto de Biotecnología Farmacéutica y Alimentaria (INBIOFAL), CONICET-UNT, Tucumán, Argentina
- Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán (UNT), Tucumán, Argentina
| | - Mario Eduardo Arena
- Instituto de Biotecnología Farmacéutica y Alimentaria (INBIOFAL), CONICET-UNT, Tucumán, Argentina
- Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán (UNT), Tucumán, Argentina
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21
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Sun SJ, Liu YC, Weng CH, Sun SW, Li F, Li H, Zhu H. Cyclic Dipeptides Mediating Quorum Sensing and Their Biological Effects in Hypsizygus Marmoreus. Biomolecules 2020; 10:biom10020298. [PMID: 32070027 PMCID: PMC7072446 DOI: 10.3390/biom10020298] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 02/10/2020] [Accepted: 02/12/2020] [Indexed: 01/19/2023] Open
Abstract
A novel quorum sensing (QS) system was discovered in Serratia odorifera, the symbiotic bacterium of Hypsizygus marmoreus. This system uses cyclo(Pro-Phe), cyclo(Pro-Tyr), cyclo(Pro-Val), cyclo(Pro-Leu), cyclo(Tyr-Leu), and cyclo(Tyr-Ile) as autoinducers. This discovery is the first attempt to characterize cyclic dipeptides as QS signaling molecules in S. odorifera and improves the classical QS theory. Significantly, except for cyclo(Tyr-Leu), these QS autoinducers can increase the transcription level of lignin-degrading enzyme genes of H. marmoreus. The cyclo(Pro-Phe) can increase the activity of extracellular laccase (1.32-fold) and manganese peroxidase (20%), which may explain why QS potentially regulates the hyphal growth, primordium formation, and fruit body development of H. marmoreus. Furthermore, it was demonstrated that the cyclo(Tyr-Ile) biosynthesis in S. odorifera was catalyzed by the nonribosomal peptide synthetase (NRPS). This study supports exploring the growth and development of H. marmoreus promoted by its symbiotic bacteria at QS signal transduction level.
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Affiliation(s)
- Shu-Jing Sun
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Correspondence: (S.-J.S.); (H.Z.); Tel.: +86-591-83-789-492 (S.-J.S.); +86-591-83-465-326 (H.Z.)
| | - Yun-Chao Liu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Cai-Hong Weng
- Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China (S.-W.S.); (H.L.)
| | - Shi-Wei Sun
- Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China (S.-W.S.); (H.L.)
| | - Fan Li
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hui Li
- Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China (S.-W.S.); (H.L.)
| | - Hu Zhu
- Fujian Provincial University Engineering Research Center of Industrial Biocatalysis, College of Chemistry and Materials Science, Fujian Normal University, 32 Shangsan Road, Fuzhou 350007, China
- Correspondence: (S.-J.S.); (H.Z.); Tel.: +86-591-83-789-492 (S.-J.S.); +86-591-83-465-326 (H.Z.)
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22
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Samson D, Rentsch D, Minuth M, Meier T, Loidl G. The aspartimide problem persists: Fluorenylmethyloxycarbonyl-solid-phase peptide synthesis (Fmoc-SPPS) chain termination due to formation of N-terminal piperazine-2,5-diones. J Pept Sci 2019; 25:e3193. [PMID: 31309675 PMCID: PMC6772008 DOI: 10.1002/psc.3193] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 01/22/2019] [Revised: 05/10/2019] [Accepted: 05/13/2019] [Indexed: 11/24/2022]
Abstract
Aspartimide (Asi) formation is a notorious side reaction in peptide synthesis that is well characterized and described in literature. In this context, we observed significant amounts of chain termination in Fmoc‐SPPS while synthesizing the N‐terminal Xaa‐Asp‐Yaa motif. This termination was caused by the formation of piperazine‐2,5‐diones. We investigated this side reaction using a linear model peptide and independently synthesizing its piperazine‐2,5‐dione derivative. Nuclear magnetic resonance (NMR) data of the side product present in the crude linear peptide proves that exclusively the six‐membered ring is formed whereas the theoretically conceivable seven‐membered 1,4‐diazepine‐2,5‐dione is not found. We propose a mechanism where nucleophilic attack of the N‐terminal amino function takes place at the α‐carbon of the carbonyl group of the corresponding Asi intermediate. In addition, we systematically investigated the impact of (a) different adjacent amino acid residues, (b) backbone protection, and (c) side chain protection of flanking amino acids. The side reaction is directly related to the Asi intermediate. Hence, hindering or avoiding Asi formation reduces or completely suppresses this side reaction.
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Affiliation(s)
- Daniel Samson
- Bachem AG, Hauptstrasse 144, CH-4416, Bubendorf, Switzerland
| | - Daniel Rentsch
- Swiss Federal Laboratories for Materials Science and Technology (EMPA), Laboratory for Functional Polymers, Überlandstrasse 129, CH-8600, Dübendorf, Switzerland
| | - Marco Minuth
- Bachem AG, Hauptstrasse 144, CH-4416, Bubendorf, Switzerland
| | - Thomas Meier
- Bachem AG, Hauptstrasse 144, CH-4416, Bubendorf, Switzerland
| | - Günther Loidl
- Bachem AG, Hauptstrasse 144, CH-4416, Bubendorf, Switzerland
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23
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Salvatore MM, Nicoletti R, DellaGreca M, Andolfi A. Occurrence and Properties of Thiosilvatins. Mar Drugs 2019; 17:E664. [PMID: 31779089 DOI: 10.3390/md17120664] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/19/2019] [Accepted: 11/21/2019] [Indexed: 12/02/2022] Open
Abstract
The spread of studies on biodiversity in different environmental contexts is particularly fruitful for natural product discovery, with the finding of novel secondary metabolites and structural models, which are sometimes specific to certain organisms. Within the large class of the epipolythiodioxopiperazines, which are typical of fungi, thiosilvatins represent a homogeneous family that, so far, has been reported in low frequency in both marine and terrestrial contexts. However, recent observations indicate that these compounds have been possibly neglected in the metabolomic characterization of fungi, particularly from marine sources. Aspects concerning occurrence, bioactivities, structural, and biosynthetic properties of thiosilvatins are reviewed in this paper.
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24
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Rothwell JA, Keski-Rahkonen P, Robinot N, Assi N, Casagrande C, Jenab M, Ferrari P, Boutron-Ruault MC, Mahamat-Saleh Y, Mancini FR, Boeing H, Katzke V, Kühn T, Niforou K, Trichopoulou A, Valanou E, Krogh V, Mattiello A, Palli D, Sacerdote C, Tumino R, Scalbert A. A Metabolomic Study of Biomarkers of Habitual Coffee Intake in Four European Countries. Mol Nutr Food Res 2019; 63:e1900659. [PMID: 31483556 DOI: 10.1002/mnfr.201900659] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/23/2019] [Indexed: 11/07/2022]
Abstract
SCOPE The goal of this work is to identify circulating biomarkers of habitual coffee intake using a metabolomic approach, and to investigate their associations with coffee intake in four European countries. METHODS AND RESULTS Untargeted mass spectrometry-based metabolic profiling is performed on serum samples from 451 participants of the European Prospective Investigation on Cancer and Nutrition (EPIC) originating from France, Germany, Greece, and Italy. Eleven coffee metabolites are found to be associated with self-reported habitual coffee intake, including eight more strongly correlated (r = 0.25-0.51, p < 10E-07 ). Trigonelline shows the highest correlation, followed by caffeine, two caffeine metabolites (paraxanthine and 5-Acetylamino-6-amino-3-methyluracil), quinic acid, and three compounds derived from coffee roasting (cyclo(prolyl-valyl), cyclo(isoleucyl-prolyl), cyclo(leucyl-prolyl), and pyrocatechol sulfate). Differences in the magnitude of correlations are observed between countries, with trigonelline most highly correlated with coffee intake in France and Germany, quinic acid in Greece, and cyclo(isoleucyl-prolyl) in Italy. CONCLUSION Several biomarkers of habitual coffee intake are identified. No unique biomarker is found to be optimal for all tested populations. Instead, optimal biomarkers are shown to depend on the population and on the type of coffee consumed. These biomarkers should help to further explore the role of coffee in disease risk.
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Affiliation(s)
- Joseph A Rothwell
- International Agency for Research on Cancer (IARC), Nutrition and Metabolism Section, 150 Cours Albert Thomas, Lyon, F-69372, France
| | - Pekka Keski-Rahkonen
- International Agency for Research on Cancer (IARC), Nutrition and Metabolism Section, 150 Cours Albert Thomas, Lyon, F-69372, France
| | - Nivonirina Robinot
- International Agency for Research on Cancer (IARC), Nutrition and Metabolism Section, 150 Cours Albert Thomas, Lyon, F-69372, France
| | - Nada Assi
- International Agency for Research on Cancer (IARC), Nutrition and Metabolism Section, 150 Cours Albert Thomas, Lyon, F-69372, France
| | - Corinne Casagrande
- International Agency for Research on Cancer (IARC), Nutrition and Metabolism Section, 150 Cours Albert Thomas, Lyon, F-69372, France
| | - Mazda Jenab
- International Agency for Research on Cancer (IARC), Nutrition and Metabolism Section, 150 Cours Albert Thomas, Lyon, F-69372, France
| | - Pietro Ferrari
- International Agency for Research on Cancer (IARC), Nutrition and Metabolism Section, 150 Cours Albert Thomas, Lyon, F-69372, France
| | - Marie-Christine Boutron-Ruault
- French National Institute of Health and Medical Research (INSERM), Centre for Research in Epidemiology and Population Health (CESP), UVSQ, Université Paris-Saclay, Université Paris-Sud, F-94805, Villejuif, France
- Institut Gustave Roussy, F-94805, Villejuif, France
| | - Yahya Mahamat-Saleh
- French National Institute of Health and Medical Research (INSERM), Centre for Research in Epidemiology and Population Health (CESP), UVSQ, Université Paris-Saclay, Université Paris-Sud, F-94805, Villejuif, France
- Institut Gustave Roussy, F-94805, Villejuif, France
| | - Francesca Romana Mancini
- French National Institute of Health and Medical Research (INSERM), Centre for Research in Epidemiology and Population Health (CESP), UVSQ, Université Paris-Saclay, Université Paris-Sud, F-94805, Villejuif, France
- Institut Gustave Roussy, F-94805, Villejuif, France
| | - Heiner Boeing
- German Institute of Human Nutrition Potsdam-Rehbruecke, 14558, Nuthetal, Germany
| | - Verena Katzke
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Tilman Kühn
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | | | | | - Elisavet Valanou
- Hellenic Health Foundation, 11527, Athens, Greece
- Pulmonary Medicine Department, School of Medicine, National and Kapodistrian University of Athens, "ATTIKON" University, Athens, Greece
| | - Vittorio Krogh
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133, Milan, Italy
| | - Amalia Mattiello
- Department of Clinical Medicine and Surgery, Federico II University, 80131, Naples, Italy
| | - Domenico Palli
- Cancer Risk Factors and Life-Style Epidemiology Unit, Cancer Research and Prevention Institute (ISPRO), 50139, Florence, Italy
| | - Carlotta Sacerdote
- Unit of Cancer Epidemiology, Citta` della Salute e della Scienza University-Hospital and Center for Cancer Prevention (CPO), Turin, Italy
| | - Rosario Tumino
- Cancer Registry and Histopathology Unit, "Civic-M.P.Arezzo" Hospital, Provincial Health Unit, Ragusa, Italy
| | - Augustin Scalbert
- International Agency for Research on Cancer (IARC), Nutrition and Metabolism Section, 150 Cours Albert Thomas, Lyon, F-69372, France
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25
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Zhu J, Zhang Y, Deng J, Jiang H, Zhuang L, Ye W, Ma J, Jiang J, Feng L. Diketopiperazines Synthesis Gene in Shewanella baltica and Roles of Diketopiperazines and Resveratrol in Quorum Sensing. J Agric Food Chem 2019; 67:12013-12025. [PMID: 31589428 DOI: 10.1021/acs.jafc.9b04620] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The synthesis pathways of quorum sensing (QS) signal molecules and the mechanism of action of quorum sensing inhibitors (QSIs) have gained considerable attention as research topics in the field of food preservation. Here, Shewanella baltica was detected as the specific spoilage organism in large yellow croaker during 4 °C storage, and it produced the QS signal molecules autoinducer-2 (AI-2) and diketopiperazines (DKPs). Then, a cyclodipeptide synthase (CDPS) homologous gene, sb1370, was screened, and knockout and rescue results revealed that this gene was involved in DKP synthesis but not in AI-2 synthesis, and it also played an important role in QS. Furthermore, fish fillets and mutant strains were treated with resveratrol, and the results suggested that resveratrol was an ideal QSI for inhibition of DKPs production via the sb1370 gene and reduced QS in S. baltica, thus delaying the process of fish spoilage during chilling storage.
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Affiliation(s)
- Junli Zhu
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Yuwei Zhang
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Jingmin Deng
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Hanyun Jiang
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Liumin Zhuang
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Wei Ye
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Jiayu Ma
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Jingyang Jiang
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Lifang Feng
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
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26
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Wang Y, Wang F, Wang C, Li X, Fu L. Positive Regulation of Spoilage Potential and Biofilm Formation in Shewanella baltica OS155 via Quorum Sensing System Composed of DKP and Orphan LuxRs. Front Microbiol 2019; 10:135. [PMID: 30804914 PMCID: PMC6370745 DOI: 10.3389/fmicb.2019.00135] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 04/25/2018] [Accepted: 01/21/2019] [Indexed: 12/23/2022] Open
Abstract
The spoilage potential and biofilm formation of Shewanella baltica are reported to be regulated by Quorum sensing (QS) system from the phenotype point of view, but the specific mechanism is not fully understood. In the present study, the QS autoinducers were detected by UHPLC-MS/MS, cell density-dependent luxR-type genes were obtained through autoregulation experiments among a series of candidates in S. baltica OS155 (The SSO of large yellow croaker). The direct interaction between cyclo-(L-Pro-L-Phe) (PP) and LuxR01 as well as LuxR02 proteins was revealed via in vitro binding assay. Deletion of luxR-type genes (luxR01 and luxR02) impaired spoilage potential and biofilm formation of S. baltica OS155 in various degrees. Transcriptional analysis and qRT-PCR validation showed that spoilage and biofilm-related genes torS, speF, and pomA were down-regulated in luxR01 and luxR02 deletion strains. In addition, exogenous PP promoted spoilage potential and biofilm formation, which could be attenuated by luxR01 or luxR02 deletion. Our results revealed an explicit QS system employing PP as autoinducer and two orphan LuxRs as receptors which positively regulated spoilage capacity and biofilm formation via transcriptional regulation of corresponding genes in S. baltica OS155, which provides potential specific targets for seafood preservation involving QS system.
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Affiliation(s)
- Yanbo Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
- Zhejiang Engineering Institute of Food Quality and Safety, Zhejiang Gongshang University, Hangzhou, China
| | - Feifei Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Chong Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Linglin Fu
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
- Zhejiang Engineering Institute of Food Quality and Safety, Zhejiang Gongshang University, Hangzhou, China
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27
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Yurchenko AN, Berdyshev DV, Smetanina OF, Ivanets EV, Zhuravleva OI, Rasin AB, Khudyakova YV, Popov RS, Dyshlovoy SA, von Amsberg G, Afiyatullov SS. Citriperazines A-D produced by a marine algae-derived fungus Penicillium sp. KMM 4672. Nat Prod Res 2019; 34:1118-1123. [PMID: 30663353 DOI: 10.1080/14786419.2018.1552696] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Four new diketopiperazine alkaloids, citriperazines A-D were isolated from algae-derived Penicillium sp. KMM 4672. The structures of compounds 1-4 were determined using spectroscopic methods. The absolute configurations of compounds 1 and 4 were established by comparison of calculated and experimental ECD spectra. The cytotoxicity of compounds 1-4 against several human prostate cell lines was evaluated.
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Affiliation(s)
| | - Dmitry V Berdyshev
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia
| | - Olga F Smetanina
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia
| | - Elena V Ivanets
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia
| | - Olesya I Zhuravleva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia.,Laboratory of Biologically Active Compounds, Far Eastern Federal University, Vladivostok, Russia
| | - Anton B Rasin
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia
| | | | - Roman S Popov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia
| | - Sergey A Dyshlovoy
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia.,Laboratory of Biologically Active Compounds, Far Eastern Federal University, Vladivostok, Russia.,Laboratory of Experimental Oncology, Department of Oncology, Haematology and Bone Marrow Transplantation, Section Pneumology, Hubertus Wald-Tumorzentrum, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gunhild von Amsberg
- Laboratory of Experimental Oncology, Department of Oncology, Haematology and Bone Marrow Transplantation, Section Pneumology, Hubertus Wald-Tumorzentrum, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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28
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Zhang D, Wang W. A facile synthesis of cysteine-based diketopiperazine from thiol-protected precursor. R Soc Open Sci 2018; 5:180272. [PMID: 30110492 PMCID: PMC6030340 DOI: 10.1098/rsos.180272] [Citation(s) in RCA: 4] [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] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 05/14/2018] [Indexed: 06/08/2023]
Abstract
l-Cysteine is one of the most promising biomass-based building blocks with great potential applications. Herein, we report a versatile synthetic route to produce cysteine-based 2,5-diketopiperazine (DKP) with good yield from the thiol-ene click reaction of l-cysteine and commercially available acrylates, followed by dimerization of the amino acid intermediates. The achieved DKP diastereomers were successfully separated and fully characterized by spectroscopic methods. Moreover, the chiroptical property of DKP in the presence of various metal ions was investigated by circular dichroism spectroscopy. The potential application of the optically active cysteine-based DKP as a chiral probe for detection of silver ion in water has been demonstrated.
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Affiliation(s)
- Di Zhang
- Department of Chemistry, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, Shanxi 030001, China
| | - Wayne Wang
- Department of Chemistry, Carleton University, 1125 Colonel by Drive, Ottawa, Ontario, CanadaK1S 5B6
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29
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Alshaibani M, Zin NM, Jalil J, Sidik N, Ahmad SJ, Kamal N, Edrada-Ebel R. Isolation, Purification, and Characterization of Five Active Diketopiperazine Derivatives from Endophytic Streptomyces SUK 25 with Antimicrobial and Cytotoxic Activities. J Microbiol Biotechnol 2018; 27:1249-1256. [PMID: 28535606 DOI: 10.4014/jmb.1608.08032] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
In our search for new sources of bioactive secondary metabolites from Streptomyces sp., the ethyl acetate extracts from endophytic Streptomyces SUK 25 afforded five active diketopiperazine (DKP) compounds. The aim of this study was to characterize the bioactive compounds isolated from endophytic Streptomyces SUK 25 and evaluate their bioactivity against multiple drug resistance (MDR) bacteria such as Enterococcus raffinosus, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumanii, Pseudomonas aeruginosa, and Enterobacter spp., and their cytotoxic activities against the human hepatoma (HepaRG) cell line. The production of secondary metabolites by this strain was optimized through Thornton's medium. Isolation, purification, and identification of the bioactive compounds were carried out using high-performance liquid chromatography, high-resolution mass liquid chromatography-mass spectrometry, Fourier transform infrared spectroscopy, and nuclear magnetic resonance, and cryopreserved HepaRG cells were selected to test the cytotoxicity. The results showed that endophytic Streptomyces SUK 25 produces four active DKP compounds and an acetamide derivative, which were elucidated as cyclo-(L-Val-L-Pro), cyclo-(L-Leu-L-Pro), cyclo-(L-Phe-L-Pro), cyclo-(L-Val-L-Phe), and N-(7-hydroxy-6-methyl-octyl)-acetamide. These active compounds exhibited activity against methicillin-resistant S. aureus ATCC 43300 and Enterococcus raffinosus, with low toxicity against human hepatoma HepaRG cells. Endophytic Streptomyces SUK 25 has the ability to produce DKP derivatives biologically active against some MDR bacteria with relatively low toxicity against HepaRG cells line.
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Affiliation(s)
- Muhanna Alshaibani
- Programme of Biomedical Science, School of Diagnostic and Applied Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Noraziah Mohamad Zin
- Programme of Biomedical Science, School of Diagnostic and Applied Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Juriyati Jalil
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Nik Sidik
- Faculty of Ago-based Industry, Universiti Malaysia Kelantan, 17600 Jeli, Kelantan, Malaysia
| | - Siti Junaidah Ahmad
- Programme of Biomedical Science, School of Diagnostic and Applied Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Nurkhalida Kamal
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, Scotland.,Department of Pharmaceutical Sciences, Faculty of Pharmacy, Cyberjaya University College of Medical Sciences, 63000 Cyberjaya, Selangor Malaysia
| | - Ruangelie Edrada-Ebel
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, Scotland
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30
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Abstract
Cyclic dipeptides are the simplest peptide derivatives commonly found in nature. These chiral molecules are easily synthesized from readily available α-amino acids using a simple methodology. They are privileged structures with the ability to bind to a wide range of receptors and have a broad variety of biological and pharmacological activities. We will give a brief overview of their status giving and interesting reference list about the last works.
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Affiliation(s)
- Aurelio Ortiz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, C.P. 72570, Puebla, Pue. Mexico
| | - Estibaliz Sansinenea
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, C.P. 72570, Puebla, Pue. Mexico
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31
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Silva MMD, Andrade MDS, Bauermeister A, Merfa MV, Forim MR, Fernandes JB, Vieira PC, Silva MFDGFD, Lopes NP, Machado MA, Souza AAD. A Simple Defined Medium for the Production of True Diketopiperazines in Xylella fastidiosa and Their Identification by Ultra-Fast Liquid Chromatography-Electrospray Ionization Ion Trap Mass Spectrometry. Molecules 2017; 22:E985. [PMID: 28608830 PMCID: PMC6152636 DOI: 10.3390/molecules22060985] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/24/2017] [Accepted: 06/08/2017] [Indexed: 11/28/2022] Open
Abstract
Diketopiperazines can be generated by non-enzymatic cyclization of linear dipeptides at extreme temperature or pH, and the complex medium used to culture bacteria and fungi including phytone peptone and trypticase peptone, can also produce cyclic peptides by heat sterilization. As a result, it is not always clear if many diketopiperazines reported in the literature are artifacts formed by the different complex media used in microorganism growth. An ideal method for analysis of these compounds should identify whether they are either synthesized de novo from the products of primary metabolism and deliver true diketopiperazines. A simple defined medium (X. fastidiosa medium or XFM) containing a single carbon source and no preformed amino acids has emerged as a method with a particularly high potential for the grown of X. fastidiosa and to produce genuine natural products. In this work, we identified a range of diketopiperazines from X. fastidiosa 9a5c growth in XFM, using Ultra-Fast Liquid Chromatography coupled with mass spectrometry. Diketopiperazines are reported for the first time from X. fastidiosa, which is responsible for citrus variegated chlorosis. We also report here fatty acids from X. fastidiosa, which were not biologically active as diffusible signals, and the role of diketopiperazines in signal transduction still remains unknown.
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Affiliation(s)
| | - Moacir Dos Santos Andrade
- Departamento de Química, Universidade Federal de São Carlos, CP 676, 13565-905 São Carlos-SP, Brazil.
| | - Anelize Bauermeister
- Núcleo Pesquisas em Produtos Naturais e Sintéticos, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, 14040-903 Ribeirão Preto-SP, Brazil.
| | - Marcus Vinícius Merfa
- Centro APTA Citros Sylvio Moreira, Instituto Agronômico, CP 04, 13490-970 Cordeirópolis-SP, Brazil.
| | - Moacir Rossi Forim
- Departamento de Química, Universidade Federal de São Carlos, CP 676, 13565-905 São Carlos-SP, Brazil.
| | - João Batista Fernandes
- Departamento de Química, Universidade Federal de São Carlos, CP 676, 13565-905 São Carlos-SP, Brazil.
| | - Paulo Cezar Vieira
- Departamento de Química, Universidade Federal de São Carlos, CP 676, 13565-905 São Carlos-SP, Brazil.
| | | | - Norberto Peporine Lopes
- Núcleo Pesquisas em Produtos Naturais e Sintéticos, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, 14040-903 Ribeirão Preto-SP, Brazil.
| | - Marcos Antônio Machado
- Centro APTA Citros Sylvio Moreira, Instituto Agronômico, CP 04, 13490-970 Cordeirópolis-SP, Brazil.
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Noël A, Ferron S, Rouaud I, Gouault N, Hurvois JP, Tomasi S. Isolation and Structure Identification of Novel Brominated Diketopiperazines from Nocardia ignorata-A Lichen-Associated Actinobacterium. Molecules 2017; 22:E371. [PMID: 28264516 DOI: 10.3390/molecules22030371] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 02/22/2017] [Accepted: 02/23/2017] [Indexed: 11/26/2022] Open
Abstract
Actinobacteria are well known for their potential in biotechnology and their production of metabolites of interest. Lichens are a promising source of new bacterial strains, especially Actinobacteria, which afford a broad chemical diversity. In this context, the culture medium of the actinobacterium Nocardia ignorata, isolated from the terrestrial lichen Collema auriforme, was studied. The strain was cultivated in a BioFlo 115 bioreactor, and the culture medium was extracted using an XAD7HP resin. Five known diketopiperazines: cyclo (l-Pro-l-OMet) (1), cyclo (l-Pro-l-Tyr) (2), cyclo (d-Pro-l-Tyr) (3), cyclo (l-Pro-l-Val) (4), cyclo (l-Pro-l-Leu) (5), and one auxin derivative: indole-carboxaldehyde (8) were isolated, along with two new brominated diketopiperazines: cyclo (d-Pro-l-Br-Tyr) (6) and cyclo (l-Pro-l-Br-Tyr) (7). Structure elucidation was performed using HRMS and 1D and 2D NMR analysis, and the synthesis of compounds 6 and 7 was carried out in order to confirm their structure.
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Amatov T, Gebauer M, Pohl R, Cisařová I, Jahn U. Oxidative radical cyclizations of diketopiperazines bearing an amidomalonate unit. Heterointermediate reaction sequences toward the asperparalines and stephacidins. Free Radic Res 2016; 50:S6-S17. [PMID: 27806645 DOI: 10.1080/10715762.2016.1223295] [Citation(s) in RCA: 6] [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] [Indexed: 12/16/2022]
Abstract
A novel approach to the diazabicyclo[2.2.2]octane core of prenylated bridged diketopiperazine alkaloids is described by direct oxidative cyclizations of functionalized diketopiperazines mediated by ferrocenium hexafluorophosphate or the Mn(OAc)3•2H2O/Cu(OTf)2 system. Divergent reaction pathways take place depending on the substitution pattern of the substrates and the oxidation conditions such as temperature or the presence or absence of persistent radical TEMPO. For ester-substituted diketopiperazines, the ester group exerts a significant influence on the reaction outcome and stereochemistry of the radical cyclizations.
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Affiliation(s)
- Tynchtyk Amatov
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Martin Gebauer
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Radek Pohl
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Ivana Cisařová
- b Department of Inorganic Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030/8 , Prague 2, Czech Republic
| | - Ullrich Jahn
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
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Abstract
A new propanamide analogue (1), along with one known alkaloid (2) and four known diketopiperazines (3-6), was isolated from a cultured broth of the actinomycete Streptomyces sp. Q24 that was obtained from a sample of mangrove soil. The structures of these isolates were characterised as 3-acetylamino-N-2-thienyl-propanamide (1), N-acetyltryptamine (2), cyclo-(l-phenylalanine-l-4-hydroxyproline) (3), cyclo-(l-leucine-l-4-hydroxyproline) (4), cyclo-(l-phenylalanine-d-4-hydroxyproline) (5) and cyclo-(l-leucine-l-proline) (6) based on their NMR and HRESIMS data as well as optical rotation. Three diketopiperazines (3, 4, 6) showed activity in inhibiting the proliferation of human glioma U87-MG and U251 cells. This type of the new propanamide analogue (1) is first found from a nature source and the antiproliferative property of these three diketopiperazines against glioma cells is also reported herein for the first time.
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Affiliation(s)
- Xuewei Ye
- a Ocean College , Zhejiang University , Zhoushan , China
| | - Weiyun Chai
- a Ocean College , Zhejiang University , Zhoushan , China
| | - Xiao-Yuan Lian
- b College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Zhizhen Zhang
- a Ocean College , Zhejiang University , Zhoushan , China
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Fan Z, Sun ZH, Liu Z, Chen YC, Liu HX, Li HH, Zhang WM. Dichotocejpins A-C: New Diketopiperazines from a Deep-Sea-Derived Fungus Dichotomomyces cejpii FS110. Mar Drugs 2016; 14:md14090164. [PMID: 27618072 PMCID: PMC5039535 DOI: 10.3390/md14090164] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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: 08/03/2016] [Revised: 09/02/2016] [Accepted: 09/05/2016] [Indexed: 01/07/2023] Open
Abstract
Three new diketopiperazines, dichotocejpins A–C (1–3), together with eight known analogues (4–11), were isolated from the culture of the deep-sea sediment derived fungus Dichotomomyces cejpii FS110. Their structures, including absolute configurations, were elucidated by a combination of HRESIMS, NMR, X-ray crystallography, and ECD calculations. Compounds 4–6, 10–11 showed significant cytotoxic activities against MCF-7, NCI-H460, HepG-2, and SF-268 tumor cell lines. Compound 1 exhibited excellent inhibitory activity against α-glucosidase with an IC50 of 138 μM.
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Affiliation(s)
- Zhen Fan
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
| | - Zhang-Hua Sun
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
| | - Zhong Liu
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
| | - Yu-Chan Chen
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
| | - Hong-Xin Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
| | - Hao-Hua Li
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
| | - Wei-Min Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
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May Zin WW, Buttachon S, Dethoup T, Fernandes C, Cravo S, Pinto MMM, Gales L, Pereira JA, Silva AMS, Sekeroglu N, Kijjoa A. New Cyclotetrapeptides and a New Diketopiperzine Derivative from the Marine Sponge-Associated Fungus Neosartorya glabra KUFA 0702. Mar Drugs 2016; 14:E136. [PMID: 27447650 PMCID: PMC4962026 DOI: 10.3390/md14070136] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [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: 06/17/2016] [Revised: 07/14/2016] [Accepted: 07/15/2016] [Indexed: 11/16/2022] Open
Abstract
Two new cyclotetrapeptides, sartoryglabramides A (5) and B (6), and a new analog of fellutanine A (8) were isolated, together with six known compounds including ergosta-4, 6, 8 (14), 22-tetraen-3-one, ergosterol 5, 8-endoperoxide, helvolic acid, aszonalenin (1), (3R)-3-(1H-indol-3-ylmethyl)-3,4-dihydro-1H-1,4-benzodiazepine-2,5-dione (2), takakiamide (3), (11aR)-2,3-dihydro-1H-pyrrolo[2,1-c][1,4]benzodiazepine-5,11(10H,11aH)-dione (4), and fellutanine A (7), from the ethyl acetate extract of the culture of the marine sponge-associated fungus Neosartorya glabra KUFA 0702. The structures of the new compounds were established based on extensive 1D and 2D spectral analysis. X-ray analysis was also used to confirm the relative configuration of the amino acid constituents of sartoryglabramide A (5), and the absolute stereochemistry of the amino acid constituents of sartoryglabramide A (5) and sartoryglabramides B (6) was determined by chiral HPLC analysis of their hydrolysates by co-injection with the d- and l- amino acids standards. Compounds 1-8 were tested for their antibacterial activity against Gram-positive (Escherichia coli ATCC 25922) and Gram-negative (Staphyllococus aureus ATCC 25923) bacteria, as well as for their antifungal activity against filamentous (Aspergillus fumigatus ATCC 46645), dermatophyte (Trichophyton rubrum ATCC FF5) and yeast (Candida albicans ATCC 10231). None of the tested compounds exhibited either antibacterial (MIC > 256 μg/mL) or antifungal activities (MIC > 512 μg/mL).
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Affiliation(s)
- War War May Zin
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-313 Porto, Portugal.
| | - Suradet Buttachon
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-313 Porto, Portugal.
| | - Tida Dethoup
- Department of Plant Pathology, Faculty of Agriculture, Kasetsart University, 10240 Bangkok, Thailand.
| | - Carla Fernandes
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-313 Porto, Portugal.
- Laboratório de Química Orgânica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Sara Cravo
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-313 Porto, Portugal.
- Laboratório de Química Orgânica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Madalena M M Pinto
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-313 Porto, Portugal.
- Laboratório de Química Orgânica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Luís Gales
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
- Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - José A Pereira
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Artur M S Silva
- Departamento de Química & QOPNA, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
| | - Nazim Sekeroglu
- Medicinal and Aromatic Plant Programme, Plant and Animal Sciences Department, Vocational School, Kilis Aralık University, 79000 Kilis, Turkey.
| | - Anake Kijjoa
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-313 Porto, Portugal.
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Zhu J, Huang X, Zhang F, Feng L, Li J. Inhibition of quorum sensing, biofilm, and spoilage potential in Shewanella baltica by green tea polyphenols. J Microbiol 2015; 53:829-36. [PMID: 26626353 DOI: 10.1007/s12275-015-5123-3] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [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: 03/09/2015] [Revised: 10/22/2015] [Accepted: 10/29/2015] [Indexed: 10/22/2022]
Abstract
We investigated the quorum sensing (QS) system of Shewanella baltica and the anti-QS related activities of green tea polyphenols (TP) against spoilage bacteria in refrigerated large yellow croaker. Autoinducer-2 (AI-2) and the diketopiperazines (DKPs) cyclo-(L-Pro-L-Leu) and cyclo-(L-Pro-L-Phe) were detected in the culture extract of S. baltica XH2, however, no N-acylhomoserine lactones (AHLs) activity was observed. Green TP at sub-inhibitory concentrations interfered with AI-2 and DKPs activities of S. baltica without inhibiting cell growth and promoted degradation of AI-2. The green TP treatment inhibited biofilm development, exopolysaccharide production and swimming motility of S. baltica in a concentration- dependent manner. In addition, green TP decreased extracellular protease activities and trimethylamine production in S. baltica. A transcriptional analysis showed that green TP repressed the luxS and torA genes in S. baltica, which agreed with the observed reductions in QS activity and the spoilage phenotype. Epigallocatechin gallate (EGCG)-enriched in green TP significantly inhibited AI-2 activity of S. baltica. These findings strongly suggest that green TP could be developed as a new QS inhibitor for seafood preservation to enhance shelf life.
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Affiliation(s)
- Junli Zhu
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, P. R. China.
| | - Xuzheng Huang
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, P. R. China
| | - Fang Zhang
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, P. R. China
| | - Lifang Feng
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, P. R. China
| | - Jianrong Li
- College of Chemistry, Chemical Engineering and Food Safety, Bohai University, Food Safety Key Lab of Liaoning Province, Jinzhou, 121013, P. R. China
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Deepa I, Kumar SN, Sreerag RS, Nath VS, Mohandas C. Purification and synergistic antibacterial activity of arginine derived cyclic dipeptides, from Achromobacter sp. associated with a rhabditid entomopathogenic nematode against major clinically relevant biofilm forming wound bacteria. Front Microbiol 2015; 6:876. [PMID: 26379651 PMCID: PMC4548193 DOI: 10.3389/fmicb.2015.00876] [Citation(s) in RCA: 15] [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: 05/13/2015] [Accepted: 08/10/2015] [Indexed: 01/01/2023] Open
Abstract
Skin and chronic wound infections caused by various pathogenic bacteria are an increasing and urgent health problem worldwide. In the present investigation ethyl acetate extract of an Achromobacter sp. associated with a Rhabditis entomopathogenic nematode (EPN), displayed promising antibacterial property and was further purified by silica gel column chromatography to get three different cyclic dipeptides (CDPs). Based on the spectral data and Marfey's analyses, the CDPs were identified as cyclo(D-Leu-D-Arg) (1), cyclo(L-Trp-L-Arg) (2), and cyclo(D-Trp-D-Arg) (3), respectively. Three CDPs were active against all the 10 wound associated bacteria tested. The significant antibacterial activity was recorded by CDP 3, and highest activity of 0.5 μg/ml was recorded against Staphylococcus aureus and Pseudomonas aeruginosa. The synergistic antibacterial activities of CDPs and ampicillin were assessed using the checkerboard microdilution method. The results of the current study recorded that the combined effects of CDPs and ampicillin principally recorded synergistic activity. Interestingly, the combination of CDPs and ampicillin also recorded enhanced inhibition of biofilm formation by bacteria. Moreover, CDPs significantly stimulate the production of IL-10 and IL-4 (anti-inflammatory cytokines) by human peripheral blood mononuclear cells. CDPs do not make any significant effect on the production of pro-inflammatory cytokines like TNF-α. The three CDPs have been studied for their effect on intracellular S. aureus in murine macrophages (J774) using 24 h exposure to 0.5X, 1X, and 2X MIC concentrations. Significant decrease in intracellular S. aureus burden was recorded by CDPs. CDPs also recorded no cytotoxicity toward FS normal fibroblast, VERO, and L231 normal lung epithelial cell lines. Antimicrobial activity of the arginine containing CDPs against the wound associated bacteria is reported here for the first. Moreover, this is also the first report on the production of CDPs by Achromobacter sp. Finally, we conclude that the Achromobacter sp. is an incredibly promising source of natural bioactive secondary metabolites especially against wound pathogenic bacteria that may receive significant benefit in the field of human medicine in near future as topical agents.
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Affiliation(s)
- Indira Deepa
- Division of Crop Protection, Central Tuber Crops Research Institute Thiruvananthapuram, India
| | - Sasidharan N Kumar
- Division of Crop Protection, Central Tuber Crops Research Institute Thiruvananthapuram, India
| | - Ravikumar S Sreerag
- Division of Crop Protection, Central Tuber Crops Research Institute Thiruvananthapuram, India
| | - Vishnu S Nath
- Division of Crop Protection, Central Tuber Crops Research Institute Thiruvananthapuram, India
| | - Chellapan Mohandas
- Division of Crop Protection, Central Tuber Crops Research Institute Thiruvananthapuram, India
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Abstract
Marine indole alkaloids comprise a large and steadily growing group of secondary metabolites. Their diverse biological activities make many compounds of this class attractive starting points for pharmaceutical development. Several marine-derived indoles were found to possess cytotoxic, antineoplastic, antibacterial and antimicrobial activities, in addition to the action on human enzymes and receptors. The newly isolated indole alkaloids of marine origin since the last comprehensive review in 2003 are reported, and biological aspects will be discussed.
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Affiliation(s)
- Natalie Netz
- 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
Modified cyclic dipeptides represent a diverse family of microbial secondary metabolites. They display a broad variety of biological and pharmacological activities and have long been recognized as privileged structures with the ability to bind to a wide range of receptors. This is due to their conformationally constrained 2, 5-diketopiperazine (DKP) scaffold and the diverse set of DKP tailoring enzymes present in nature. After initial DKP assembly through different biosynthetic systems modifying enzymes are responsible for installing functional groups crucial for the biological activities of the resulting modified DKPs. They represent a vast and largely untapped enzyme repository very useful for synthetic biology approaches aiming at introducing structural variations into DKP scaffolds. In this review we focus on these DKP modification enzymes found in various microbial secondary metabolite gene clusters. We will give a brief overview of their distribution and highlight a select number of characterized DKP tailoring enzymes before turning to their application potential in combinatorial biosynthesis with the aim of producing molecules with improved or entirely new biological and medicinally relevant properties.
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Affiliation(s)
- Tobias W Giessen
- Department of Systems Biology, Harvard Medical School, Boston MA, USA ; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston MA, USA
| | - Mohamed A Marahiel
- Department of Chemistry, Philipps-University Marburg Marburg, Germany ; LOEWE Center for Synthetic Microbiology, Philipps-University Marburg Marburg, Germany
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Abstract
Cyclic dipeptides (CDPs) are a group of hormone-like molecules that are evolutionarily conserved from bacteria to humans. In bacteria, CDPs are used in quorum sensing (QS) to communicate information about population size and to regulate a behavioural switch from symbiosis with their host to virulence. In mammals, CDPs have been shown to act on glial cells (macrophage-like cells) to control a conceptually homologous behavioural switch between homeostatic and inflammatory modes, with implications for the control of neurodegenerative disease. Here we argue that, because of their capacity to regulate inflammation via glial cells and induce a protective response in neuronal cells, CDPs have potential therapeutic utility in an array of inflammatory diseases.
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Affiliation(s)
- Ilaria Bellezza
- Experimental Medicine Department, Polo Unico S. Andrea delle Fratte, University of Perugia, 06124 Perugia, Italy
| | - Matthew J Peirce
- Experimental Medicine Department, Polo Unico S. Andrea delle Fratte, University of Perugia, 06124 Perugia, Italy
| | - Alba Minelli
- Experimental Medicine Department, Polo Unico S. Andrea delle Fratte, University of Perugia, 06124 Perugia, Italy.
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Li XZ, Chen G, Wang HF, Hua HM, Pei YH. Synthesis and bioactivity of diketopiperazine PJ147 and its derivatives from Gliocladium sp. YUP08. J Asian Nat Prod Res 2014; 16:764-769. [PMID: 24827395 DOI: 10.1080/10286020.2014.916283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 10/16/2013] [Accepted: 04/15/2014] [Indexed: 06/03/2023]
Abstract
Concise total synthesis of diketopiperazine PJ147, obtained from mycelium of Gliocladium sp. YUP08, has been achieved in seven steps with 43.5% overall yield. Biological evaluation of PJ147 exhibited strong inhibiting activity against A375-S2, Hela, P388, A-549, HL-60, and BEL-7420 cell lines. Thus, eight derivatives of PJ147 with high water solubility were also synthesized to facilitate the in vivo bioassay of this kind of diketopiperazines.
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Affiliation(s)
- Xue-Zheng Li
- a Department of Pharmacy , Affiliated Hospital of Yanbian University , Yanji 133000 , China
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