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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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Oluwabusola ET, Adebisi OO, Reyes F, Acquah KS, De La Cruz M, Mweetwa LL, Rajakulendran JE, Warner DF, Hai D, Ebel R, Jaspars M. Isolation and characterization of new phenolic siderophores with antimicrobial properties from Pseudomonas sp. UIAU-6B. Beilstein J Org Chem 2021; 17:2390-2398. [PMID: 34621401 PMCID: PMC8450953 DOI: 10.3762/bjoc.17.156] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 08/30/2021] [Indexed: 01/21/2023] Open
Abstract
Five new phenolic siderophores 1–5 were isolated from the organic extract of a culture broth in a modified SGG medium of Pseudomonas sp. UIAU-6B, obtained from sediments collected from the Oyun river in North Central Nigeria. The structure of the new compounds, pseudomonin A–C (1–3) and pseudomobactin A and B (4 and 5) isolated alongside two known compounds, pseudomonine (6) and salicylic acid (7), were elucidated based on high-resolution mass spectrometry, 1D and 2D NMR analyses. The absolute configuration of the threonine residue in compounds 1–5 was determined by Marfey analysis. The antimicrobial evaluation of compound 4 exhibited the most potent activity against vancomycin-sensitive Enterococcus faecium VS144754, followed by 3 and 5, with MIC values ranging from 8 to 32 µg/mL. Compounds 2 and 3 exhibited moderate activity against Mycobacterium tuberculosis H37Rv, with MIC values of 7.8 and 15.6 µg/mL, respectively. Plausible biosynthetic hypotheses toward the new compounds 1–5 were proposed.
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Affiliation(s)
| | - Olusoji O Adebisi
- Department of Microbiology, Faculty of Life Sciences, University of Ilorin, Kwara State, Ilorin, Nigeria
| | - Fernando Reyes
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnoloógico de Ciencias de la Salud, E-18016 Granada, Spain
| | - Kojo S Acquah
- Wellcome Centre for Infectious Diseases Research in Africa, University of Cape Town, Rondebosch, 7701, South Africa
| | - Mercedes De La Cruz
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnoloógico de Ciencias de la Salud, E-18016 Granada, Spain
| | - Larry L Mweetwa
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Scotland, UK
| | - Joy E Rajakulendran
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Scotland, UK
| | - Digby F Warner
- Wellcome Centre for Infectious Diseases Research in Africa, University of Cape Town, Rondebosch, 7701, South Africa
| | - Deng Hai
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Scotland, UK
| | - Rainer Ebel
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Scotland, UK
| | - Marcel Jaspars
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Scotland, UK
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Witika BA, Mweetwa LL, Tshiamo KO, Edler K, Matafawali SK, Ntemi PV, Chikukwa MTR, Makoni PA. Vesicular drug delivery for the treatment of topical disorders: current and future perspectives. J Pharm Pharmacol 2021; 73:1427-1441. [PMID: 34132342 DOI: 10.1093/jpp/rgab082] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 02/02/2021] [Accepted: 05/12/2021] [Indexed: 11/13/2022]
Abstract
OBJECTIVES Vesicular drug delivery has become a useful approach for therapeutic administration of pharmaceutical compounds. Lipid vesicles have found application in membrane biology, immunology, genetic engineering and theragnostics. This review summarizes topical delivery, specifically dermal/transdermal, ocular and transungual, via these vesicles, including future formulation perspectives. KEY FINDINGS Liposomes and their subsequent derivatives, viz. niosomes, transferosomes, pharmacososmes and ethosomes, form a significant part of vesicular systems that have been successfully utilized in treating an array of topical disorders. These vesicles are thought to be a safe and effective mode of improving the delivery of lipophilic and hydrophilic drugs. SUMMARY Several drug molecules are available for topical disorders. However, physicochemical properties and undesirable toxicity have limited their efficacy. Vesicular delivery systems have the potential to overcome these shortcomings due to properties such as high biocompatibility, simplicity of surface modification and suitability as controlled delivery vehicles. However, incorporating these systems into environmentally responsive dispersants such as hydrogels, ionic liquids and deep eutectic solvents may further enhance therapeutic prowess of these delivery systems. Consequently, improved vesicular drug delivery can be achieved by considering combining some of these formulation approaches.
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Affiliation(s)
- Bwalya A Witika
- Division of Pharmaceutics, Department of Pharmacy, DDT College of Medicine, Gaborone, Botswana
| | - Larry L Mweetwa
- Division of Pharmaceutics, Department of Pharmacy, DDT College of Medicine, Gaborone, Botswana
| | - Kabo O Tshiamo
- Division of Pharmaceutics, Department of Pharmacy, DDT College of Medicine, Gaborone, Botswana
| | - Karen Edler
- Department of Chemistry, University of Bath, Bath, UK
| | - Scott K Matafawali
- Department of Basic Sciences, School of Medicine, Copperbelt University, Ndola, Zambia
| | - Pascal V Ntemi
- Department of Pharmaceutics, School of Pharmacy, Muhimbili University of Health Allied Sciences, Dar es Salaam, Tanzania
| | - Melissa T R Chikukwa
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda, South Africa
| | - Pedzisai A Makoni
- Division of Pharmacology, Faculty of Pharmacy, Rhodes University, Makhanda, South Africa
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Witika BA, Makoni PA, Mweetwa LL, Ntemi PV, Chikukwa MTR, Matafwali SK, Mwila C, Mudenda S, Katandula J, Walker RB. Nano-Biomimetic Drug Delivery Vehicles: Potential Approaches for COVID-19 Treatment. Molecules 2020; 25:E5952. [PMID: 33339110 PMCID: PMC7765509 DOI: 10.3390/molecules25245952] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 11/21/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 02/07/2023] Open
Abstract
The current COVID-19 pandemic has tested the resolve of the global community with more than 35 million infections worldwide and numbers increasing with no cure or vaccine available to date. Nanomedicines have an advantage of providing enhanced permeability and retention and have been extensively studied as targeted drug delivery strategies for the treatment of different disease. The role of monocytes, erythrocytes, thrombocytes, and macrophages in diseases, including infectious and inflammatory diseases, cancer, and atherosclerosis, are better understood and have resulted in improved strategies for targeting and in some instances mimicking these cell types to improve therapeutic outcomes. Consequently, these primary cell types can be exploited for the purposes of serving as a "Trojan horse" for targeted delivery to identified organs and sites of inflammation. State of the art and potential utilization of nanocarriers such as nanospheres/nanocapsules, nanocrystals, liposomes, solid lipid nanoparticles/nano-structured lipid carriers, dendrimers, and nanosponges for biomimicry and/or targeted delivery of bioactives to cells are reported herein and their potential use in the treatment of COVID-19 infections discussed. Physicochemical properties, viz., hydrophilicity, particle shape, surface charge, composition, concentration, the use of different target-specific ligands on the surface of carriers, and the impact on carrier efficacy and specificity are also discussed.
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Affiliation(s)
- Bwalya A. Witika
- Department of Pharmacy, DDT College of Medicine, P.O. Box 70587, Gaborone 00000, Botswana; (B.A.W.); (L.L.M.)
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa; (P.A.M.); (P.V.N.); (M.T.R.C.)
| | - Pedzisai A. Makoni
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa; (P.A.M.); (P.V.N.); (M.T.R.C.)
| | - Larry L. Mweetwa
- Department of Pharmacy, DDT College of Medicine, P.O. Box 70587, Gaborone 00000, Botswana; (B.A.W.); (L.L.M.)
| | - Pascal V. Ntemi
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa; (P.A.M.); (P.V.N.); (M.T.R.C.)
| | - Melissa T. R. Chikukwa
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa; (P.A.M.); (P.V.N.); (M.T.R.C.)
| | - Scott K. Matafwali
- Department of Basic Sciences, School of Medicine, Copperbelt University, Ndola 10101, Zambia;
| | - Chiluba Mwila
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka 10101, Zambia; (C.M.); (S.M.)
| | - Steward Mudenda
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka 10101, Zambia; (C.M.); (S.M.)
| | - Jonathan Katandula
- Department of Biosciences and Chemistry, Faculty of Health and Wellbeing, Sheffield Hallam University, Sheffield S1 1WB, UK;
| | - Roderick B. Walker
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa; (P.A.M.); (P.V.N.); (M.T.R.C.)
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