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Qader M, Mweetwa LL, Rämä T, Thissera B, Milne BF, Abdelmohsen UR, Orfali R, Tawfike A, Esheli M, Oluwabusola ET, Jaysainghe L, Jaspars M, Rateb ME. Discovery and structural assignment of (S)-sydosine from amphipod-derived Aspergillus sydowii MBC15-11F through HRMS, advanced Mosher and molecular modelling analyses. J Appl Microbiol 2023:lxad158. [PMID: 37480242 DOI: 10.1093/jambio/lxad158] [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] [Indexed: 07/23/2023]
Abstract
AIMS This study aims to prioritize fungal strains recovered from under-explored habitats that produce new metabolites. HRMS dereplication is used to avoid structure redundancy and molecular modelling is used to assign absolute configuration. METHODS AND RESULTS MBC15-11F was isolated from an amphipod and identified using ITS, 28S, and β-tubulin phylogeny as Aspergillus sydowii. Chemical profiling using taxonomic-based dereplication identified structurally diverse metabolites, including unreported ones. Large-scale fermentation led to the discovery of a new N-acyl adenosine derivative: (S)-sydosine (1) which was elucidated by NMR and HRESIMS analyses. Two known compounds were also identified as predicted by the initial dereplication process. Due to scarcity of 1, molecular modelling was used to assign its absolute configuration without hydrolysis, and is supported by advanced Mosher derivatization. When the isolated compounds were assessed against a panel of bacterial pathogens, only phenamide (3) showed anti-Staphylococcus aureus activity. CONCLUSION Fermentation of A. sydowii yielded a new (S)-sydosine and known metabolites as predicted by HRESIMS-aided dereplication. Molecular modelling prediction of the absolute configuration of 1 agreed with advanced Mosher analysis.
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Affiliation(s)
- Mallique Qader
- School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, Scotland, UK
- National Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka
| | - Larry L Mweetwa
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Old Aberdeen, AB24 3UE, UK
| | - Teppo Rämä
- The Norwegian College of Fishery Science, UiT Arctic University of Norway, Tromsø, Norway
| | - Bathini Thissera
- School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, Scotland, UK
| | - Bruce F Milne
- Department of Physics, University of Coimbra, Rua Larga 3004 - 516 Coimbra, Portugal
- Department of Chemistry, University of Aberdeen, Old Aberdeen, AB24 3UE, Scotland, UK
| | - Usama R Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, New Minia 61111, Egypt
| | - Raha Orfali
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed Tawfike
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, 11795, Cairo, Egypt
| | - Manal Esheli
- School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, Scotland, UK
- Food Science & Technology Department, Faculty of Agriculture, University of Tripoli, Tripoli 13538, Libya
| | - Emmanuel T Oluwabusola
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Old Aberdeen, AB24 3UE, UK
- DDT College of Medicine, Broadhurst Mall, P.O. BOX 70587, Gaborone, Botswana
| | - Lalith Jaysainghe
- National Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka
| | - Marcel Jaspars
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Old Aberdeen, AB24 3UE, UK
| | - Mostafa E Rateb
- School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, Scotland, UK
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2
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Ferrandino G, De Palo G, Murgia A, Birch O, Tawfike A, Smith R, Debiram-Beecham I, Gandelman O, Kibble G, Lydon AM, Groves A, Smolinska A, Allsworth M, Boyle B, van der Schee MP, Allison M, Fitzgerald RC, Hoare M, Snowdon VK. Breath Biopsy ® to Identify Exhaled Volatile Organic Compounds Biomarkers for Liver Cirrhosis Detection. J Clin Transl Hepatol 2023; 11:638-648. [PMID: 36969895 PMCID: PMC10037526 DOI: 10.14218/jcth.2022.00309] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/30/2022] [Accepted: 11/01/2022] [Indexed: 03/29/2023] Open
Abstract
Background and Aims The prevalence of chronic liver disease in adults exceeds 30% in some countries and there is significant interest in developing tests and treatments to help control disease progression and reduce healthcare burden. Breath is a rich sampling matrix that offers non-invasive solutions suitable for early-stage detection and disease monitoring. Having previously investigated targeted analysis of a single biomarker, here we investigated a multiparametric approach to breath testing that would provide more robust and reliable results for clinical use. Methods To identify candidate biomarkers we compared 46 breath samples from cirrhosis patients and 42 from controls. Collection and analysis used Breath Biopsy OMNI™, maximizing signal and contrast to background to provide high confidence biomarker detection based upon gas chromatography mass spectrometry (GC-MS). Blank samples were also analyzed to provide detailed information on background volatile organic compounds (VOCs) levels. Results A set of 29 breath VOCs differed significantly between cirrhosis and controls. A classification model based on these VOCs had an area under the curve (AUC) of 0.95±0.04 in cross-validated test sets. The seven best performing VOCs were sufficient to maximize classification performance. A subset of 11 VOCs was correlated with blood metrics of liver function (bilirubin, albumin, prothrombin time) and separated patients by cirrhosis severity using principal component analysis. Conclusions A set of seven VOCs consisting of previously reported and novel candidates show promise as a panel for liver disease detection and monitoring, showing correlation to disease severity and serum biomarkers at late stage.
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Affiliation(s)
| | | | | | | | | | | | - Irene Debiram-Beecham
- Department of Oncology, University of Cambridge, Hutchison/MRC Research Centre, Cambridge, UK
| | | | - Graham Kibble
- Department of Oncology, University of Cambridge, Hutchison/MRC Research Centre, Cambridge, UK
| | - Anne Marie Lydon
- Department of Oncology, University of Cambridge, Hutchison/MRC Research Centre, Cambridge, UK
| | - Alice Groves
- Department of Oncology, University of Cambridge, Hutchison/MRC Research Centre, Cambridge, UK
| | - Agnieszka Smolinska
- Owlstone Medical, Cambridge, UK
- Department of Pharmacology and Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, the Netherlands
| | | | | | | | - Michael Allison
- Department of Medicine, University of Cambridge, Addenbrooke’s Hospital, Cambridge, UK
- Addenbrookes Hepatology and Liver Transplantation Unit, Addenbrookes Hospital, Cambridge, UK
| | - Rebecca C. Fitzgerald
- MRC Cancer Unit, Hutchison/MRC Research Centre, University of Cambridge, Cambridge, UK
| | - Matthew Hoare
- Department of Medicine, University of Cambridge, Addenbrooke’s Hospital, Cambridge, UK
- Addenbrookes Hepatology and Liver Transplantation Unit, Addenbrookes Hospital, Cambridge, UK
- CRUK Cambridge Institute, Cambridge, UK
| | - Victoria K. Snowdon
- Addenbrookes Hepatology and Liver Transplantation Unit, Addenbrookes Hospital, Cambridge, UK
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Bakr RO, Tawfike A, El-Gizawy HA, Tawfik N, Abdelmohsen UR, Abdelwahab MF, Alshareef WA, Fayez SM, El-Mancy SMS, El-Fishawy AM, Abdelkawy MA, Fayed MAA. The metabolomic analysis of five Mentha species: cytotoxicity, anti- Helicobacter assessment, and the development of polymeric micelles for enhancing the anti- Helicobacter activity. RSC Adv 2021; 11:7318-7330. [PMID: 35423273 PMCID: PMC8694964 DOI: 10.1039/d0ra09334c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 02/26/2021] [Accepted: 01/13/2021] [Indexed: 12/17/2022] Open
Abstract
Mentha species are medicinally used worldwide and remain attractive for research due to the diversity of their phytoconstituents and large therapeutic indices for various ailments. This study used the metabolomics examination of five Mentha species (M. suaveolens, M. sylvestris, M. piperita, M. longifolia, and M. viridis) to justify their cytotoxicity and their anti-Helicobacter effects. The activities of species were correlated with their phytochemical profiles by orthogonal partial least square discriminant analysis (OPLS-DA). Tentatively characterized phytoconstituents using liquid chromatography high-resolution electrospray ionization mass spectrometry (LC-HR-ESI-MS) included 49 compounds: 14 flavonoids, 10 caffeic acid esters, 7 phenolic acids, and other constituents. M. piperita showed the highest cytotoxicity to HepG2 (human hepatoma), MCF-7 (human breast adenocarcinoma), and CACO2 (human colon adenocarcinoma) cells using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays. OPLS-DA and dereplication studies predicted that the cytotoxic activity was related to benzyl glucopyranoside-sulfate, a lignin glycoside. Furthermore, M. viridis was effective in suppressing the growth of Helicobacter pylori at a concentration of 50 mg mL-1. OPLS-DA predicted that this activity was related to a dihydroxytrimethoxyflavone. M. viridis extract was formulated with Pluronic® F127 to develop polymeric micelles as a nanocarrier that enhanced the anti-Helicobacter activity of the extract and provided minimum inhibitory concentrations and minimum bactericidal concentrations of 6.5 and 50 mg mL-1, respectively. This activity was also correlated to tentatively identified constituents, including rosmarinic acid, catechins, carvone, and piperitone oxide.
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Affiliation(s)
- Riham O Bakr
- Department of Pharmacognosy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA) Giza Egypt
| | - Ahmed Tawfike
- Molecular Discovery Group, Computational and Analytical Science Department Rothamsted Research AL5 2JQ Harpenden UK
| | - Heba A El-Gizawy
- Department of Pharmacognosy, Faculty of Pharmacy, October 6 University Giza Egypt
| | - Nashwa Tawfik
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University Cairo 11795 Egypt
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University 61111 New Minia Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +2-86-2347759
| | - Miada F Abdelwahab
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +2-86-2347759
| | - Walaa A Alshareef
- Department of Microbiology and Immunology, Faculty of Pharmacy, October 6 University Giza Egypt
| | - Sahar M Fayez
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, October 6 University Giza Egypt
| | - Shereen M S El-Mancy
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, October 6 University Giza Egypt
| | - Ahlam M El-Fishawy
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University 11562 Cairo Egypt
| | - Mostafa A Abdelkawy
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University 11562 Cairo Egypt
| | - Marwa A A Fayed
- Department of Pharmacognosy, Faculty of Pharmacy, University of Sadat City Sadat 32897 Egypt
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Eskandari H, Ghanadian M, Noleto-Dias C, Lomax C, Tawfike A, Christiansen G, Sutherland DS, Ward JL, Mohammad-Beigi H, Otzen DE. Inhibitors of α-Synuclein Fibrillation and Oligomer Toxicity in Rosa damascena: The All-Pervading Powers of Flavonoids and Phenolic Glycosides. ACS Chem Neurosci 2020; 11:3161-3173. [PMID: 32886481 DOI: 10.1021/acschemneuro.0c00528] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 11/29/2022] Open
Abstract
There is an intense search for natural compounds that can inhibit the oligomerization and fibrillation of α-synuclein (α-Syn), whose aggregation is key to the development of Parkinson's disease (PD). Rosa damascena is a medicinal herb widely used in Middle Eastern food, ceremonies, and perfumes. The herb is known to contain many different polyphenols. Here we investigated the existence of α-Syn fibrillation inhibitors in R. damascena extract. Different HPLC fractions of the extract were assessed in α-Syn fibrillation and toxicity assays. The most active fractions led to the formation of more α-Syn oligomers but with less toxicity to SH-SY5Y cells, according to MTT and LDH assays. LC-MS analysis identified gallic acid, kaempferol 3-glucoside, kaempferol-3-O-β-rutinoside, and quercetin which were subsequently shown to be strong α-Syn fibrillation inhibitors. Our results highlight the benefits of R. damascena extract to combat PD at the population level.
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Affiliation(s)
- Hoda Eskandari
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK− 8000 Aarhus C, Denmark
| | - Mustafa Ghanadian
- Department of Pharmacognosy, Isfahan Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Clarice Noleto-Dias
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Herts AL5 2JQ, U.K
| | - Charlotte Lomax
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Herts AL5 2JQ, U.K
| | - Ahmed Tawfike
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Herts AL5 2JQ, U.K
| | - Gunna Christiansen
- Department of Biomedicine-Medical Microbiology and Immunology, Aarhus University, 8000 Aarhus C, Denmark
| | - Duncan S. Sutherland
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK− 8000 Aarhus C, Denmark
| | - Jane L. Ward
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Herts AL5 2JQ, U.K
| | - Hossein Mohammad-Beigi
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK− 8000 Aarhus C, Denmark
| | - Daniel E. Otzen
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK− 8000 Aarhus C, Denmark
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Grimberg Å, Wilkinson M, Snell P, De Vos RP, González-Thuillier I, Tawfike A, Ward JL, Carlsson AS, Shewry P, Hofvander P. Transitions in wheat endosperm metabolism upon transcriptional induction of oil accumulation by oat endosperm WRINKLED1. BMC Plant Biol 2020; 20:235. [PMID: 32450804 PMCID: PMC7249431 DOI: 10.1186/s12870-020-02438-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 05/10/2020] [Indexed: 05/09/2023]
Abstract
BACKGROUND Cereal grains, including wheat (Triticum aestivum L.), are major sources of food and feed, with wheat being dominant in temperate zones. These end uses exploit the storage reserves in the starchy endosperm of the grain, with starch being the major storage component in most cereal species. However, oats (Avena sativa L.) differs in that the starchy endosperm stores significant amounts of oil. Understanding the control of carbon allocation between groups of storage compounds, such as starch and oil, is therefore important for understanding the composition and hence end use quality of cereals. WRINKLED1 is a transcription factor known to induce triacylglycerol (TAG; oil) accumulation in several plant storage tissues. RESULTS An oat endosperm homolog of WRI1 (AsWRI1) expressed from the endosperm-specific HMW1Dx5 promoter resulted in drastic changes in carbon allocation in wheat grains, with reduced seed weight and a wrinkled seed phenotype. The starch content of mature grain endosperms of AsWRI1-wheat was reduced compared to controls (from 62 to 22% by dry weight (dw)), TAG was increased by up to nine-fold (from 0.7 to 6.4% oil by dw) and sucrose from 1.5 to 10% by dw. Expression of AsWRI1 in wheat grains also resulted in multiple layers of elongated peripheral aleurone cells. RNA-sequencing, lipid analyses, and pulse-chase experiments using 14C-sucrose indicated that futile cycling of fatty acids could be a limitation for oil accumulation. CONCLUSIONS Our data show that expression of oat endosperm WRI1 in the wheat endosperm results in changes in metabolism which could underpin the application of biotechnology to manipulate grain composition. In particular, the striking effect on starch synthesis in the wheat endosperm indicates that an important indirect role of WRI1 is to divert carbon allocation away from starch biosynthesis in plant storage tissues that accumulate oil.
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Affiliation(s)
- Åsa Grimberg
- Department of Plant Breeding, Swedish University of Agricultural Sciences, SE-23053, Alnarp, Sweden.
| | - Mark Wilkinson
- Department of Plant Sciences, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - Per Snell
- Department of Plant Breeding, Swedish University of Agricultural Sciences, SE-23053, Alnarp, Sweden
- Current address: MariboHilleshög Research AB, Box 302, 261 23, Landskrona, Sweden
| | - Rebecca P De Vos
- Department of Computational and Analytical Sciences, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | | | - Ahmed Tawfike
- Department of Computational and Analytical Sciences, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - Jane L Ward
- Department of Computational and Analytical Sciences, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - Anders S Carlsson
- Department of Plant Breeding, Swedish University of Agricultural Sciences, SE-23053, Alnarp, Sweden
| | - Peter Shewry
- Department of Plant Sciences, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - Per Hofvander
- Department of Plant Breeding, Swedish University of Agricultural Sciences, SE-23053, Alnarp, Sweden
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Abdelhafez OH, Othman EM, Fahim JR, Desoukey SY, Pimentel-Elardo SM, Nodwell JR, Schirmeister T, Tawfike A, Abdelmohsen UR. Metabolomics analysis and biological investigation of three Malvaceae plants. Phytochem Anal 2020; 31:204-214. [PMID: 31390115 DOI: 10.1002/pca.2883] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [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: 11/29/2018] [Revised: 07/03/2019] [Accepted: 07/05/2019] [Indexed: 05/27/2023]
Abstract
INTRODUCTION Metabolomics is a fast growing technology that has effectively contributed to many plant-related sciences and drug discovery. OBJECTIVE To use the non-targeted metabolomics approach to investigate the chemical profiles of three Malvaceae plants, namely Hibiscus mutabilis L. (Changing rose), H. schizopetalus (Dyer) Hook.f. (Coral Hibiscus), and Malvaviscus arboreus Cav. (Sleeping Hibiscus), along with evaluating their antioxidant and anti-infective potential. METHODOLOGY Metabolic profiling was carried out using liquid chromatography coupled with high-resolution electrospray ionisation mass spectrometry (LC-HR-ESI-MS) for dereplication purposes. The chemical composition of the studied plants was further compared by principal component analysis (PCA). The antioxidant and anti-infective properties of their different extracts were correlated to their phytochemical profiles by orthogonal partial least square discriminant analysis (OPLS-DA). RESULTS A variety of structurally different metabolites, mostly phenolics, were characterized. Comparing the distribution pattern of these tentatively identified metabolites among the studied plant species/fractions revealed the chemical uniqueness of the dichloromethane fraction of M. arboreus. Some extracts and fractions of these plants demonstrated noteworthy antioxidant and antitrypanosomal potential; the latter was partly attributed to their anti-protease activities. The active principles of these plants were pinpointed before any laborious isolation steps, to avoid the redundant isolation of previously known compounds. CONCLUSION This study highlighted the use of the established procedure in exploring the metabolomes of these species, which could be helpful for chemotaxonomic and authentication purposes, and might expand the basis for their future phytochemical analysis. Coupling the observed biological potential with LC-MS data has also accelerated the tracing of their bioactive principles.
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Affiliation(s)
| | - Eman Maher Othman
- Department of Biochemistry, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - John Refaat Fahim
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Samar Yehia Desoukey
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | | | - Justin R Nodwell
- Department of Biochemistry, University of Toronto, MaRS Centre West, Toronto, ON, Canada
| | - Tanja Schirmeister
- Institute of Pharmacy and Biochemistry, University of Mainz, Mainz, Germany
| | - Ahmed Tawfike
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Cairo, Egypt
- Department of Computational and Analytical Science, Molecular Discovery Group, Rothamsted Research, Harpenden, UK
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Tawfike A, Attia EZ, Desoukey SY, Hajjar D, Makki AA, Schupp PJ, Edrada-Ebel R, Abdelmohsen UR. New bioactive metabolites from the elicited marine sponge-derived bacterium Actinokineospora spheciospongiae sp. nov. AMB Express 2019; 9:12. [PMID: 30680548 PMCID: PMC6345950 DOI: 10.1186/s13568-018-0730-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 12/21/2018] [Accepted: 12/31/2018] [Indexed: 12/15/2022] Open
Abstract
Several approaches have been dedicated to activate the cryptic gene clusters in the genomes of actinomycetes for the targeted discovery of new fascinating biomedical lead structures. In the current study, N-acetylglucosamine was used to maximize the chemical diversity of sponge-derived actinomycete Actinokineospora spheciospongiae sp. nov. HR-ESI-MS was employed for dereplication study and orthogonal partial least square-discriminant analysis was applied to evaluate the HR-ESI-MS data of the different fractions. As a result, two new fridamycins H (1) and I (2), along with three known compounds actinosporin C (3), D (4), and G (5) were isolated from the solid culture of sponge-associated actinomycete Actinokineospora spheciospongiae sp. nov., elicited with N-acetylglucosamine. Characterization of the isolated compounds was pursued using mass spectrometry and NMR spectral data. Fridamycin H (1) exhibited significant growth inhibitory activity towards Trypanosoma brucei strain TC221. These results highlight the potential of elicitation in sponge-associated actinomycetes as an effective strategy for the discovery of new anti-infective natural products.
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Mohammad-Beigi H, Aliakbari F, Sahin C, Lomax C, Tawfike A, Schafer NP, Amiri-Nowdijeh A, Eskandari H, Møller IM, Hosseini-Mazinani M, Christiansen G, Ward JL, Morshedi D, Otzen DE. Oleuropein derivatives from olive fruit extracts reduce α-synuclein fibrillation and oligomer toxicity. J Biol Chem 2019; 294:4215-4232. [PMID: 30655291 DOI: 10.1074/jbc.ra118.005723] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 01/09/2019] [Indexed: 11/06/2022] Open
Abstract
Aggregation of α-synuclein (αSN) is implicated in neuronal degeneration in Parkinson's disease and has prompted searches for natural compounds inhibiting αSN aggregation and reducing its tendency to form toxic oligomers. Oil from the olive tree (Olea europaea L.) represents the main source of fat in the Mediterranean diet and contains variable levels of phenolic compounds, many structurally related to the compound oleuropein. Here, using αSN aggregation, fibrillation, size-exclusion chromatography-multiangle light scattering (SEC-MALS)-based assays, and toxicity assays, we systematically screened the fruit extracts of 15 different olive varieties to identify compounds that can inhibit αSN aggregation and oligomer toxicity and also have antioxidant activity. Polyphenol composition differed markedly among varieties. The variety with the most effective antioxidant and aggregation activities, Koroneiki, combined strong inhibition of αSN fibril nucleation and elongation with strong disaggregation activity on preformed fibrils and prevented the formation of toxic αSN oligomers. Fractionation of the Koroneiki extract identified oleuropein aglycone, hydroxyl oleuropein aglycone, and oleuropein as key compounds responsible for the differences in inhibition across the extracts. These phenolic compounds inhibited αSN amyloidogenesis by directing αSN monomers into small αSN oligomers with lower toxicity, thereby suppressing the subsequent fibril growth phase. Our results highlight the molecular consequences of differences in the level of effective phenolic compounds in different olive varieties, insights that have implications for long-term human health.
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Affiliation(s)
- Hossein Mohammad-Beigi
- From the Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark,
| | - Farhang Aliakbari
- From the Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.,the Departments of Industrial and Environmental Biotechnology and
| | - Cagla Sahin
- From the Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.,the Department of Molecular Biology and Genetics, Aarhus University, Forsøgsvej 1, DK-4200 Slagelse, Denmark
| | - Charlotte Lomax
- the Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Herts AL5 2JQ, United Kingdom
| | - Ahmed Tawfike
- the Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Herts AL5 2JQ, United Kingdom
| | - Nicholas P Schafer
- From the Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Alireza Amiri-Nowdijeh
- Agricultural Biotechnology, National Institute of Genetic Engineering and Biotechnology, P. O. Box 1417863171, Tehran, Iran
| | - Hoda Eskandari
- From the Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Ian Max Møller
- the Department of Molecular Biology and Genetics, Aarhus University, Forsøgsvej 1, DK-4200 Slagelse, Denmark
| | - Mehdi Hosseini-Mazinani
- Agricultural Biotechnology, National Institute of Genetic Engineering and Biotechnology, P. O. Box 1417863171, Tehran, Iran
| | - Gunna Christiansen
- the Department of Biomedicine-Medical Microbiology and Immunology, Aarhus University, 8000 Aarhus C, Denmark, and
| | - Jane L Ward
- the Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Herts AL5 2JQ, United Kingdom
| | - Dina Morshedi
- the Departments of Industrial and Environmental Biotechnology and
| | - Daniel E Otzen
- From the Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark, .,the Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10C, DK-8000 Aarhus C, Denmark
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Shewry P, Rakszegi M, Lovegrove A, Amos D, Corol DI, Tawfike A, Mikó P, Ward JL. Effects of Organic and Conventional Crop Nutrition on Profiles of Polar Metabolites in Grain of Wheat. J Agric Food Chem 2018; 66:5346-5351. [PMID: 29746125 DOI: 10.1021/acs.jafc.8b01593] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 06/08/2023]
Abstract
The profiles of polar metabolites were determined in wholemeal flours of grain from the Broadbalk wheat experiment and from plants grown under organic and low-input systems to study the effects of nutrition on composition. The Broadbalk samples showed increased amino acids, acetate, and choline and decreased fructose and succinate with increasing nitrogen fertilization. Samples receiving farm yard manure had similar grain nitrogen to those receiving 96 kg of N/ha but had higher contents of amino acids, sugars, and organic acids. A comparison of the profiles of grain from organic and low-input systems showed only partial separation, with clear effects of climate and agronomy. However, supervised multivariate analysis showed that the low-input samples had higher contents of many amino acids, raffinose, glucose, organic acids, and choline and lower sucrose, fructose, and glycine. Consequently, although differences between organic and conventional grain occur, these cannot be used to confirm sample identity.
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Affiliation(s)
- Peter Shewry
- School of Agriculture, Policy and Development , University of Reading , Whiteknights Campus, Early Gate, Reading RG6 6AR , United Kingdom
| | - Marianna Rakszegi
- Agricultural Institute, Centre for Agricultural Research , Hungarian Academy of Sciences , Brunszvik ut 2 , Martonvásár 2462 , Hungary
| | | | - Dominic Amos
- Organic Research Centre , Elm Farm, Hamstead Marshall, Newbury , Berkshire RG20 0HR , United Kingdom
| | | | | | - Péter Mikó
- Agricultural Institute, Centre for Agricultural Research , Hungarian Academy of Sciences , Brunszvik ut 2 , Martonvásár 2462 , Hungary
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