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de Lucio H, Revuelto A, Carriles AA, de Castro S, García-González S, García-Soriano JC, Alcón-Calderón M, Sánchez-Murcia PA, Hermoso JA, Gago F, Camarasa MJ, Jiménez-Ruiz A, Velázquez S. Identification of 1,2,3-triazolium salt-based inhibitors of Leishmania infantum trypanothione disulfide reductase with enhanced antileishmanial potency in cellulo and increased selectivity. Eur J Med Chem 2022; 244:114878. [DOI: 10.1016/j.ejmech.2022.114878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/14/2022] [Accepted: 10/21/2022] [Indexed: 11/04/2022]
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Nunes RS, Vila-Viçosa D, Costa PJ. Halogen Bonding: An Underestimated Player in Membrane–Ligand Interactions. J Am Chem Soc 2021; 143:4253-4267. [DOI: 10.1021/jacs.0c12470] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Rafael Santana Nunes
- BioISI - Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisboa, Campo Grande, C8 bdg, 1749-016 Lisboa, Portugal
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Diogo Vila-Viçosa
- BioISI - Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisboa, Campo Grande, C8 bdg, 1749-016 Lisboa, Portugal
| | - Paulo J. Costa
- BioISI - Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisboa, Campo Grande, C8 bdg, 1749-016 Lisboa, Portugal
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Mohamed HA, Shepherd S, William N, Blundell HA, Das M, Pask CM, Lake BRM, Phillips RM, Nelson A, Willans CE. Silver(I) N-Heterocyclic Carbene Complexes Derived from Clotrimazole: Antiproliferative Activity and Interaction with an Artificial Membrane-Based Biosensor. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Heba A. Mohamed
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Samantha Shepherd
- School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, U.K
| | - Nicola William
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Helen A. Blundell
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Madhurima Das
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Christopher M. Pask
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Benjamin R. M. Lake
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Roger M. Phillips
- School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, U.K
| | - Andrew Nelson
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
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Owen J, Kuznecovs M, Bhamji R, William N, Domenech-Garcia N, Hesler M, Knoll T, Kohl Y, Nelson A, Kapur N. High-throughput electrochemical sensing platform for screening nanomaterial-biomembrane interactions. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:025002. [PMID: 32113378 DOI: 10.1063/1.5131562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
A high-throughput, automated screening platform has been developed for the assessment of biological membrane damage caused by nanomaterials. Membrane damage is detected using the technique of analyzing capacitance-current peak changes obtained through rapid cyclic voltammetry measurements of a phospholipid self-assembled monolayer formed on a mercury film deposited onto a microfabricated platinum electrode after the interaction of a biomembrane-active species. To significantly improve wider usability of the screening technique, a compact, high-throughput screening platform was designed, integrating the monolayer-supporting microfabricated electrode into a microfluidic flow cell, with bespoke pumps used for precise, automated control of fluid flow. Chlorpromazine, a tricyclic antidepressant, and a citrate-coated 50 nm diameter gold nanomaterial (AuNM) were screened to successfully demonstrate the platform's viability for high-throughput screening. Chlorpromazine and the AuNM showed interactions with a 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) monolayer at concentrations in excess of 1 µmol dm-3. Biological validity of the electrochemically measured interaction of chlorpromazine with DOPC monolayers was confirmed through quantitative comparisons with HepG2 and A549 cytotoxicity assays. The platform also demonstrated desirable performance for high-throughput screening, with membrane interactions detected in <6 min per assay. Automation contributed to this significantly by reducing the required operating skill level when using the technique and minimizing fluid consumption.
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Affiliation(s)
- Joshua Owen
- Institute of Thermofluids, School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Maksims Kuznecovs
- Institute of Thermofluids, School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Raeesa Bhamji
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Nicola William
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
| | | | - Michelle Hesler
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Thorsten Knoll
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Yvonne Kohl
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Andrew Nelson
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Nikil Kapur
- Institute of Thermofluids, School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
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William N, Nelson A, Gutsell S, Hodges G, Rabone J, Teixeira A. Hg-supported phospholipid monolayer as rapid screening device for low molecular weight narcotic compounds in water. Anal Chim Acta 2019; 1069:98-107. [PMID: 31084746 DOI: 10.1016/j.aca.2019.04.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/04/2019] [Accepted: 04/09/2019] [Indexed: 11/27/2022]
Abstract
This study positions the fabricated Pt/Hg-supported phospholipid sensor element in the context of more conventional biomembrane-based screening platforms. The technology has been used together with immobilised artificial membrane (IAM) chromatography and COSMOmic simulation methods to screen the interaction of a series of low molecular weight narcotic organic compounds in water with phosphatidylcholine (PC) membranes. For these chemicals it is shown that toxicity to aquatic species is related to compound hydrophobicity which is associated with compound accumulation in the phospholipid membrane as modelled by IAM chromatography measurements and COSMOmic simulations. In contrast, the Hg-supported dioleoyl phosphatidylcholine (DOPC) sensor element records membrane damage/modification which is indirectly related to general toxicity and directly related to compound structure. Electrochemical limit of detection (LoD) values depend on molecular structure and range from 20 μmolL-1 for substituted phenols to 23 mmolL-1 for aliphatics. Rapid cyclic voltammetry (RCV) "fingerprints" showed that the major structural classes of compounds: alkyl/chlorobenzenes, substituted phenols, quaternary ammonium compounds and neutral amines interacted distinctively with the DOPC on Hg and that these observations correlated with and supported those predicted by the COSMOmic simulations of the compound/DMPC association. In addition, the compatibility of the electrochemical and COSMOmic methods validates the electrochemical device as a meaningful high throughput technology to screen compounds in water and report on the mechanistic details of their interaction with phospholipid layers.
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Affiliation(s)
- N William
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - A Nelson
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
| | - S Gutsell
- Safety and Environmental Assurance Centre, Unilever, Colworth Science Park, Sharnbrook, UK
| | - G Hodges
- Safety and Environmental Assurance Centre, Unilever, Colworth Science Park, Sharnbrook, UK
| | - J Rabone
- Safety and Environmental Assurance Centre, Unilever, Colworth Science Park, Sharnbrook, UK
| | - A Teixeira
- Safety and Environmental Assurance Centre, Unilever, Colworth Science Park, Sharnbrook, UK
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