1
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Thordarson P, Meijer EW. Roeland Nolte (1944-2024). Nat Nanotechnol 2024; 19:421. [PMID: 38561427 DOI: 10.1038/s41565-024-01646-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Affiliation(s)
- Pall Thordarson
- School of Chemistry & UNSW RNA Institute, UNSW Sydney, Sydney, New South Wales, Australia.
| | - E W Meijer
- School of Chemistry & UNSW RNA Institute, UNSW Sydney, Sydney, New South Wales, Australia.
- Institute for Complex Molecular Systems & Department of Chemistry and Chemical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.
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2
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Marshall LK, Fahrenbach AC, Thordarson P. RNA-Binding Peptides Inspired by the RNA Recognition Motif. ACS Chem Biol 2024; 19:243-248. [PMID: 38314708 DOI: 10.1021/acschembio.3c00694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
β-Hairpin peptides with RNA-binding sequences mimicking the central two β-strands of the RNA recognition motif (RRM) protein domain have been observed to bind in a 2:1 fashion to a series of RNA homooligonucleotides in aqueous solution (PBS buffer, pH 7.40) with binding energies (-27 to -35 kJ mol-1) similar to those of full-size protein RRMs. The peptides display mild selectivities with respect to the binding of the different homooligomers. Binding studies in 500 mM magnesium chloride suggest that the complex formation is not predominantly driven by Coulombic attraction. These peptides represent a starting point for further studies of non-Coulombic binding of RNA by peptides and proteins, which is important in the context of contemporary biology, potential therapeutic applications, and prebiotic peptide-RNA interactions.
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3
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Höglsperger F, Larik FA, Bai C, Seyfried MD, Daniliuc C, Klaasen H, Thordarson P, Beves JE, Ravoo BJ. Water-Soluble Arylazoisoxazole Photoswitches. Chemistry 2023; 29:e202302069. [PMID: 37578089 DOI: 10.1002/chem.202302069] [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: 06/30/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/15/2023]
Abstract
Azoheteroarenes are emerging as powerful alternatives to azobenzene molecular photoswitches. In this study, water-soluble arylazoisoxazole photoswitches are introduced. UV/vis and NMR spectroscopy revealed moderate to very good photostationary states and reversible photoisomerization between the E- and Z-isomers over multiple cycles with minimal photobleaching. Several arylazoisoxazoles form host-guest complexes with β- and γ-cyclodextrin with significant differences in binding constants for each photoisomer as shown by isothermal titration calorimetry and NMR experiments, indicating their potential for photoresponsive host-guest chemistry in water. One carboxylic acid functionalized arylazoisoxazole can act as a hydrogelator, allowing gel properties to be manipulated reversibly with light. The hydrogel was characterized by rheological experiments, atom force microscopy and transmission electron microscopy. These results demonstrate that arylazoisoxazoles can find applications as molecular photoswitches in aqueous media.
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Affiliation(s)
- Fabian Höglsperger
- Organisch-Chemisches Institut and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Correnstrasse 36, 48149, Münster, Germany
| | - Fayaz Ali Larik
- School of Chemistry, The University of New South Wales, Sydney, NSW-2052, Australia
| | - Changzhuang Bai
- School of Chemistry, The University of New South Wales, Sydney, NSW-2052, Australia
- UNSW RNA Institute, The University of New South Wales, Sydney, NSW-2052, Australia
| | - Maximilian D Seyfried
- Organisch-Chemisches Institut and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Correnstrasse 36, 48149, Münster, Germany
| | - Constantin Daniliuc
- Organisch-Chemisches Institut and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Correnstrasse 36, 48149, Münster, Germany
| | - Henning Klaasen
- Organisch-Chemisches Institut and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Correnstrasse 36, 48149, Münster, Germany
| | - Pall Thordarson
- School of Chemistry, The University of New South Wales, Sydney, NSW-2052, Australia
- UNSW RNA Institute, The University of New South Wales, Sydney, NSW-2052, Australia
| | - Jonathon E Beves
- School of Chemistry, The University of New South Wales, Sydney, NSW-2052, Australia
| | - Bart Jan Ravoo
- Organisch-Chemisches Institut and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Correnstrasse 36, 48149, Münster, Germany
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4
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Rathbone HW, Laos AJ, Michie KA, Iranmanesh H, Biazik J, Goodchild SC, Thordarson P, Green BR, Curmi PMG. Molecular dissection of the soluble photosynthetic antenna from the cryptophyte alga Hemiselmis andersenii. Commun Biol 2023; 6:1158. [PMID: 37957226 PMCID: PMC10643455 DOI: 10.1038/s42003-023-05508-4] [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: 07/27/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Cryptophyte algae have a unique phycobiliprotein light-harvesting antenna that fills a spectral gap in chlorophyll absorption from photosystems. However, it is unclear how the antenna transfers energy efficiently to these photosystems. We show that the cryptophyte Hemiselmis andersenii expresses an energetically complex antenna comprising three distinct spectrotypes of phycobiliprotein, each composed of two αβ protomers but with different quaternary structures arising from a diverse α subunit family. We report crystal structures of the major phycobiliprotein from each spectrotype. Two-thirds of the antenna consists of open quaternary form phycobiliproteins acting as primary photon acceptors. These are supplemented by a newly discovered open-braced form (~15%), where an insertion in the α subunit produces ~10 nm absorbance red-shift. The final components (~15%) are closed forms with a long wavelength spectral feature due to substitution of a single chromophore. This chromophore is present on only one β subunit where asymmetry is dictated by the corresponding α subunit. This chromophore creates spectral overlap with chlorophyll, thus bridging the energetic gap between the phycobiliprotein antenna and the photosystems. We propose that the macromolecular organization of the cryptophyte antenna consists of bulk open and open-braced forms that transfer excitations to photosystems via this bridging closed form phycobiliprotein.
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Affiliation(s)
- Harry W Rathbone
- School of Physics, The University of New South Wales, Sydney, NSW, 2052, Australia
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, 2052, Australia
- UMR144 Cell Biology and Cancer, Institut Curie, Paris, 75005, France
| | - Alistair J Laos
- UNSW RNA Institute and School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Katharine A Michie
- School of Physics, The University of New South Wales, Sydney, NSW, 2052, Australia
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, 2052, Australia
- Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Hasti Iranmanesh
- School of Physics, The University of New South Wales, Sydney, NSW, 2052, Australia
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Joanna Biazik
- Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Sophia C Goodchild
- School of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Pall Thordarson
- UNSW RNA Institute and School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Beverley R Green
- Department of Botany, University of British Columbia, Vancouver, BC, Canada
| | - Paul M G Curmi
- School of Physics, The University of New South Wales, Sydney, NSW, 2052, Australia.
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, 2052, Australia.
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5
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Hassan MM, Romana B, Mao G, Kumar N, Sonvico F, Thordarson P, Joyce P, Bremmell KE, Barnes TJ, Prestidge CA. Liposome-Micelle-Hybrid (LMH) Carriers for Controlled Co-Delivery of 5-FU and Paclitaxel as Chemotherapeutics. Pharmaceutics 2023; 15:1886. [PMID: 37514072 PMCID: PMC10385268 DOI: 10.3390/pharmaceutics15071886] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 05/31/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/30/2023] Open
Abstract
Paclitaxel (PTX) and 5-fluorouracil (5-FU) are clinically relevant chemotherapeutics, but both suffer a range of biopharmaceutical challenges (e.g., either low solubility or permeability and limited controlled release from nanocarriers), which reduces their effectiveness in new medicines. Anticancer drugs have several major limitations, which include non-specificity, wide biological distribution, a short half-life, and systemic toxicity. Here, we investigate the potential of liposome-micelle-hybrid (LMH) carriers (i.e., drug-loaded micelles encapsulated within drug-loaded liposomes) to enhance the co-formulation and delivery of PTX and 5-FU, facilitating new delivery opportunities with enhanced chemotherapeutic performance. We focus on the combination of liposomes and micelles for co-delivery of PTX and 5_FU to investigate increased drug loading, improved solubility, and transport/permeability to enhance chemotherapeutic potential. Furthermore, combination chemotherapy (i.e., containing two or more drugs in a single formulation) may offer improved pharmacological performance. Compared with individual liposome and micelle formulations, the optimized PTX-5FU-LMH carriers demonstrated increased drug loading and solubility, temperature-sensitive release, enhanced permeability in a Caco-2 cell monolayer model, and cancer cell eradication. LMH has significant potential for cancer drug delivery and as a next-generation chemotherapeutic.
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Affiliation(s)
- Md Musfizur Hassan
- School of Chemistry, The Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW 2052, Australia
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Bilquis Romana
- School of Chemistry, The Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW 2052, Australia
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Guangzhao Mao
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Naresh Kumar
- School of Chemistry, The Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Fabio Sonvico
- Department of Food and Drug, University of Parma, 43124 Parma, Italy
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Paul Joyce
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Kristen E Bremmell
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Timothy J Barnes
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Clive A Prestidge
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
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6
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Chrisman CH, Kudisch M, Puffer KO, Stewart TK, Lamb YML, Lim CH, Escobar R, Thordarson P, Johannes JW, Miyake GM. Halide Noninnocence and Direct Photoreduction of Ni(II) Enables Coupling of Aryl Chlorides in Dual Catalytic, Carbon-Heteroatom Bond-Forming Reactions. J Am Chem Soc 2023; 145:12293-12304. [PMID: 37204458 PMCID: PMC10786213 DOI: 10.1021/jacs.3c02784] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Recent mechanistic studies of dual photoredox/Ni-catalyzed, light-driven cross-coupling reactions have found that the photocatalyst (PC) operates through either reductive quenching or energy transfer cycles. To date, reports invoking oxidative quenching cycles are comparatively rare and direct observation of such a quenching event has not been reported. However, when PCs with highly reducing excited states are used (e.g., Ir(ppy)3), photoreduction of Ni(II) to Ni(I) is thermodynamically feasible. Recently, a unified reaction system using Ir(ppy)3 was developed for forming C-O, C-N, and C-S bonds under the same conditions, a prospect that is challenging with PCs that can photooxidize these nucleophiles. Herein, in a detailed mechanistic study of this system, we observe oxidative quenching of the PC (Ir(ppy)3 or a phenoxazine) via nanosecond transient absorption spectroscopy. Speciation studies support that a mixture of Ni-bipyridine complexes forms under the reaction conditions, and the rate constant for photoreduction increases when more than one ligand is bound. Oxidative addition of an aryl iodide was observed indirectly via oxidation of the resulting iodide by Ir(IV)(ppy)3. Intriguingly, the persistence of the Ir(IV)/Ni(I) ion pair formed in the oxidative quenching step was found to be necessary to simulate the observed kinetics. Both bromide and iodide anions were found to reduce the oxidized form of the PC back to its neutral state. These mechanistic insights inspired the addition of a chloride salt additive, which was found to alter Ni speciation, leading to a 36-fold increase in the initial turnover frequency, enabling the coupling of aryl chlorides.
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Affiliation(s)
- Cameron H Chrisman
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Max Kudisch
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Katherine O Puffer
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Trevor K Stewart
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Yisrael M L Lamb
- Department of Chemistry and Biochemistry, Fort Lewis College, 1000 Rim Drive, Durango, Colorado 81301, United States
| | - Chern-Hooi Lim
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
- New Iridium LLC, Boulder, Colorado 80303, United States
| | - Randolph Escobar
- Chemistry, Oncology R&D, AstraZeneca, 35 Gatehouse Drive, Waltham, Massachusetts 02451, United States
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the UNSW RNA Institute, The University of New South Wales, Sydney 2052, NSW, Australia
| | - Jeffrey W Johannes
- Chemistry, Oncology R&D, AstraZeneca, 35 Gatehouse Drive, Waltham, Massachusetts 02451, United States
| | - Garret M Miyake
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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7
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McInnes SJ, Tangney R, Brophy JJ, Thordarson P, Ooi MKJ. Does fire drive fatty acid composition in seed coats of physically dormant species? Plant Biol (Stuttg) 2023; 25:268-275. [PMID: 36534442 DOI: 10.1111/plb.13498] [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] [Received: 07/11/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Seed dormancy is the key driver regulating seed germination, hence is fundamental to the seedling recruitment life-history stage and population persistence. However, despite the importance of physical dormancy (PY) in timing post-fire germination, the mechanism driving dormancy-break within seed coats remains surprisingly unclear. We suggest that seed coat chemistry may play an important role in controlling dormancy in species with PY. In particular, seed coat fatty acids (FAs) are hydrophobic, and have melting points within the range of seed dormancy-breaking temperatures. Furthermore, melting points of saturated FAs increase with increasing carbon chain length. We investigated whether fire could influence seed coat FA profiles and discuss their potential influence on dormancy mechanisms. Seed coat FAs of 25 species within the Faboideae, from fire-prone and fire-free ecosystems, were identified and quantified through GC-MS. Fatty acid profiles were interpreted in the context of species habitat and interspecific variation. Fatty acid compositions were distinct between species from fire-prone and fire-free habitats. Fire-prone species tended to have longer saturated FA chains, a lower ratio of saturated to unsaturated FA, and a slightly higher relative amount of FAs compared to fire-free species. The specific FA composition of seed coats of fire-prone species indicated a potential role of FAs in dormancy mechanisms. Overall, the distinct FA composition between fire-prone and fire-free species suggests that chemistry of the seed coat may be under selection pressure in fire-prone ecosystems.
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Affiliation(s)
- S J McInnes
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - R Tangney
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
- Kings Park Science, Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Kings Park, Western Australia, Australia
- School of Agriculture and Environment, The University of Western Australia, Perth, Western Australia, Australia
| | - J J Brophy
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney, New South Wales, Australia
| | - P Thordarson
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney, New South Wales, Australia
- The UNSW RNA Institute, The University of New South Wales, Sydney, New South Wales, Australia
| | - M K J Ooi
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
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Nemec S, Ganda S, Al Taief K, Kopecky C, Kuchel R, Lebhar H, Marquis CP, Thordarson P, Kilian KA. A Tunable Tumor Microenvironment through Recombinant Bacterial Collagen-Hyaluronic Acid Hydrogels. ACS Appl Bio Mater 2022; 5:4581-4588. [PMID: 35670558 DOI: 10.1021/acsabm.2c00186] [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: 11/30/2022]
Abstract
Laboratory models of the tumor microenvironment require control of mechanical and biochemical properties to ensure accurate mimicry of patient disease. In contrast to pure natural or synthetic materials, hybrid approaches that pair recombinant protein fragments with synthetic scaffolding show many advantages. Here we demonstrate production of a recombinant bacterial collagen-like protein (CLP) for thiol-ene pairing to norbornene functionalized hyaluronic acid (NorHA). The resultant hydrogel material shows an adjustable modulus with evidence for strain-stiffening behavior that resembles natural tumor matrices. Cysteine terminated peptide binding motifs are incorporated to adjust the cell-adhesion points. The modular hybrid gel shows good biocompatibility and was demonstrated to control cell adhesion, proliferation, and the invasive properties of MCF7 and MD-MBA-231 breast adenocarcinoma cells. The ease in which multiple structural and bioactive components can be integrated provides a robust framework to form models of the tumor microenvironment for fundamental studies and drug development.
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Affiliation(s)
- Stephanie Nemec
- School of Materials Science & Engineering, University of New South Wales, Sydney, Australia 2052
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, Australia 2052
| | - Sylvia Ganda
- School of Chemistry, University of New South Wales, Sydney, Australia 2052
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, Australia 2052
| | - Karrar Al Taief
- School of Chemistry, University of New South Wales, Sydney, Australia 2052
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, Australia 2052
- UNSW RNA Institute, University of New South Wales, Sydney, Australia 2052
| | - Chantal Kopecky
- School of Chemistry, University of New South Wales, Sydney, Australia 2052
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, Australia 2052
| | - Rhiannon Kuchel
- Electron Microscope Unit, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, Australia 2052
| | - Hélène Lebhar
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia 2052
| | - Christopher P Marquis
- UNSW RNA Institute, University of New South Wales, Sydney, Australia 2052
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia 2052
| | - Pall Thordarson
- School of Chemistry, University of New South Wales, Sydney, Australia 2052
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, Australia 2052
- UNSW RNA Institute, University of New South Wales, Sydney, Australia 2052
| | - Kristopher A Kilian
- School of Chemistry, University of New South Wales, Sydney, Australia 2052
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, Australia 2052
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9
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Silva FRO, Lima NB, Bellini MH, Teixeira LFS, Du EY, Jamshidi N, Gooding J, Martin AD, Macmillan A, Marquis CP, Thordarson P. Lanthanide-based β-Tricalcium Phosphate Upconversion Nanoparticles as an Effective Theranostic Nonviral Vectors for Image-Guided Gene Therapy. Nanotheranostics 2022; 6:306-321. [PMID: 35223382 PMCID: PMC8864251 DOI: 10.7150/ntno.68789] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/13/2022] [Indexed: 11/06/2022] Open
Abstract
Lanthanide-based beta-tricalcium phosphate (β-TCP) upconversion nanoparticles are exploited as a non-viral vector for imaging guided-gene therapy by virtue of their unique optical properties and multi-modality imaging ability, high transfection efficiency, high biocompatibility, dispersibility, simplicity of synthesis and surface modification. Ytterbium and thulium-doped β-TCP nanoparticles (βTCPYbTm) are synthesized via co-precipitation method, coated with polyethylenimine (PEI) and functionalized with a nuclear-targeting peptide (TAT). Further, in vitro studies revealed that the nanotheranostic carriers are able to transfect cells with the plasmid eGFP at a high efficiency, with approximately 60% of total cells producing the fluorescent green protein. The optimized protocol developed comprises the most efficient βTCPYbTm/PEI configuration, the amount and the order of assembly of βTCPYbTm:PEI, TAT, plasmid DNA and the culturing conditions. With having excellent dispersibility and high chemical affinity toward nucleic acid, calcium ions released from βTCPYbTm:PEI nanoparticles can participate in delivering nucleic acids and other therapeutic molecules, overcoming the nuclear barriers and improving the transfection efficacy. Equally important, the feasibility of the upconversion multifunctional nanovector to serve as an effective contrast agent for imaging modality, capable of converting low-energy light to higher-energy photons via a multi-photons mechanism, endowing greater unique luminescent properties, was successfully demonstrated.
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Affiliation(s)
- Flavia Rodrigues Oliveira Silva
- Instituto de Pesquisas Energéticas e Nucleares, São Paulo, 05508-000, Brazil.,School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia.,School of Biotechnology and Biomolecular Sciences, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Nelson Batista Lima
- Instituto de Pesquisas Energéticas e Nucleares, São Paulo, 05508-000, Brazil
| | | | | | - Eric Yiwei Du
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Niloufar Jamshidi
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Justin Gooding
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Adam David Martin
- Dementia Research Centre, Department of Biomedical Sciences, Macquarie University, Sydney, NSW 2019, Australia
| | - Alexander Macmillan
- Katharina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre, Lowy Cancer Research Centre, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Christopher Peter Marquis
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Pall Thordarson
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia.,The UNSW RNA Institute, The University of New South Wales, Sydney NSW 2052, Australia
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10
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Pramanik S, Thordarson P, Day VW, Bowman-James K. Oligomeric phosphate clusters in macrocyclic channels. CrystEngComm 2022. [DOI: 10.1039/d2ce00756h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thirty-six-membered ring macrocycles form sandwich-like channels for oligomeric chains of hexaphosphate clusters.
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Affiliation(s)
- Subhamay Pramanik
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, USA
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the UNSW RNA Institute, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Victor W. Day
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, USA
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11
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Hendrikse SIS, Contreras-Montoya R, Ellis AV, Thordarson P, Steed JW. Biofunctionality with a twist: the importance of molecular organisation, handedness and configuration in synthetic biomaterial design. Chem Soc Rev 2021; 51:28-42. [PMID: 34846055 DOI: 10.1039/d1cs00896j] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The building blocks of life - nucleotides, amino acids and saccharides - give rise to a large variety of components and make up the hierarchical structures found in Nature. Driven by chirality and non-covalent interactions, helical and highly organised structures are formed and the way in which they fold correlates with specific recognition and hence function. A great amount of effort is being put into mimicking these highly specialised biosystems as biomaterials for biomedical applications, ranging from drug discovery to regenerative medicine. However, as well as lacking the complexity found in Nature, their bio-activity is sometimes low and hierarchical ordering is missing or underdeveloped. Moreover, small differences in folding in natural biomolecules (e.g., caused by mutations) can have a catastrophic effect on the function they perform. In order to develop biomaterials that are more efficient in interacting with biomolecules, such as proteins, DNA and cells, we speculate that incorporating order and handedness into biomaterial design is necessary. In this review, we first focus on order and handedness found in Nature in peptides, nucleotides and saccharides, followed by selected examples of synthetic biomimetic systems based on these components that aim to capture some aspects of these ordered features. Computational simulations are very helpful in predicting atomic orientation and molecular organisation, and can provide invaluable information on how to further improve on biomaterial designs. In the last part of the review, a critical perspective is provided along with considerations that can be implemented in next-generation biomaterial designs.
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Affiliation(s)
- Simone I S Hendrikse
- Department of Chemical Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia. .,School of Chemistry, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
| | | | - Amanda V Ellis
- Department of Chemical Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia.
| | - Pall Thordarson
- School of Chemistry, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
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12
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Dvořák M, Prasad SKK, Dover CB, Forest CR, Kaleem A, MacQueen RW, Petty AJ, Forecast R, Beves JE, Anthony JE, Tayebjee MJY, Widmer-Cooper A, Thordarson P, Schmidt TW. Singlet Fission in Concentrated TIPS-Pentacene Solutions: The Role of Excimers and Aggregates. J Am Chem Soc 2021; 143:13749-13758. [PMID: 34397219 DOI: 10.1021/jacs.1c05767] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The excited-state dynamics of 6,13-bis(triisopropylsilylethynyl)pentacene is investigated to determine the role of excimer and aggregate formation in singlet fission in high-concentration solutions. Photoluminescence spectra were measured by excitation with the evanescent wave in total internal reflection, in order to avoid reabsorption effects. The spectra over nearly two magnitudes of concentration were nearly identical, with no evidence for excimer emission. Time-correlated single-photon counting measurements confirm that the fluorescence lifetime shortens with concentration. The observed rate constant grows at high concentrations, and this effect is modeled in terms of the hard-sphere radial distribution function. NMR measurements confirm that aggregation takes place with a binding constant of between 0.14 and 0.43 M-1. Transient absorption measurements are consistent with a diffusive encounter mechanism for singlet fission, with hints of more rapid singlet fission in aggregates at the highest concentration measured. These data show that excimers do not play the role of an emissive intermediate in exothermic singlet fission in solution and that, while aggregation occurs at higher concentrations, the mechanism of singlet fission remains dominated by diffusive encounters.
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Affiliation(s)
- Miroslav Dvořák
- ARC Centre of Excellence in Exciton Science, School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia.,Department of Physical Electronics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, V Holešovičkách 2, 180 00 Prague 8, Czechia
| | - Shyamal K K Prasad
- ARC Centre of Excellence in Exciton Science, School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Cameron B Dover
- ARC Centre of Excellence in Exciton Science, School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Chelsea R Forest
- Australian Centre for Nanomedicine and The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Akasha Kaleem
- School of Photovoltaic and Renewable Energy Engineering, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Rowan W MacQueen
- Department of Spins in Energy Conversion and Quantum Information Science, Helmholtz-Zentrum Berlin für Materialen und Energie GmbH, Berlin 14109, Germany
| | - Anthony J Petty
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Roslyn Forecast
- ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, Victoria 3001, Australia
| | - Jonathon E Beves
- ARC Centre of Excellence in Exciton Science, School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - John E Anthony
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Murad J Y Tayebjee
- School of Photovoltaic and Renewable Energy Engineering, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Asaph Widmer-Cooper
- ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Pall Thordarson
- Australian Centre for Nanomedicine and The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Timothy W Schmidt
- ARC Centre of Excellence in Exciton Science, School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
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13
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Aguilar A, He Q, Lammer A, Thordarson P, Sessler JL. Double tailed scorpiand-type calix[10]phyrin: Synthesis and proton-driven anion recognition features. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Larik FA, Fillbrook LL, Nurttila SS, Martin AD, Kuchel RP, Al Taief K, Bhadbhade M, Beves JE, Thordarson P. Ultra-Low Molecular Weight Photoswitchable Hydrogelators. Angew Chem Int Ed Engl 2021; 60:6764-6770. [PMID: 33295683 DOI: 10.1002/anie.202015703] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Indexed: 12/20/2022]
Abstract
Two photoswitchable arylazopyrozoles form hydrogels at a concentration of 1.2 % (w/v). With a molecular weight of 258.28 g mol-1 , these are the lowest known molecular weight hydrogelators that respond reversibly to light. Photoswitching of the E- to the Z-form by exposure to 365 nm light results in a macroscopic gel→sol transition; nearly an order of magnitude reduction in the measured elastic and loss moduli. In the case of the meta-arylazopyrozole, cryogenic transmission electron microscopy suggests that the 29±7 nm wide sheets in the E-gel state narrow to 13±2 nm upon photoswitching to the predominantly Z-solution state. Photoswitching for meta-arylazopyrozole is reversible through cycles of 365 nm and 520 nm excitation with little fatigue. The release of a rhodamine B dye encapsulated in gels formed by the arylazopyrozoles is accelerated more than 20-fold upon photoswitching with 365 nm light, demonstrating these materials are suitable for light-controlled cargo release.
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Affiliation(s)
- Fayaz Ali Larik
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia.,The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Lucy L Fillbrook
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Sandra S Nurttila
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia.,The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Adam D Martin
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Rhiannon P Kuchel
- Electron Microscopy Unit, Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Karrar Al Taief
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia.,The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Mohan Bhadbhade
- Solid State & Elemental Analysis Unit, Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Jonathon E Beves
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Pall Thordarson
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia.,The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, 2052, Australia
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15
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Larik FA, Fillbrook LL, Nurttila SS, Martin AD, Kuchel RP, Al Taief K, Bhadbhade M, Beves JE, Thordarson P. Ultra‐Low Molecular Weight Photoswitchable Hydrogelators. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015703] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Fayaz Ali Larik
- School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology The University of New South Wales Sydney NSW 2052 Australia
| | - Lucy L. Fillbrook
- School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
| | - Sandra S. Nurttila
- School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology The University of New South Wales Sydney NSW 2052 Australia
| | - Adam D. Martin
- Dementia Research Centre Department of Biomedical Science Faculty of Medicine and Health Sciences Macquarie University Sydney NSW 2109 Australia
| | - Rhiannon P. Kuchel
- Electron Microscopy Unit Mark Wainwright Analytical Centre The University of New South Wales Sydney NSW 2052 Australia
| | - Karrar Al Taief
- School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology The University of New South Wales Sydney NSW 2052 Australia
| | - Mohan Bhadbhade
- Solid State & Elemental Analysis Unit Mark Wainwright Analytical Centre The University of New South Wales Sydney NSW 2052 Australia
| | - Jonathon E. Beves
- School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
| | - Pall Thordarson
- School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology The University of New South Wales Sydney NSW 2052 Australia
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16
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Evans CW, Ho D, Lee PKH, Martin AD, Chin IL, Wei Z, Li H, Atkin R, Choi YS, Norret M, Thordarson P, Iyer KS. A dendronised polymer architecture breaks the conventional inverse relationship between porosity and mechanical properties of hydrogels. Chem Commun (Camb) 2021; 57:773-776. [PMID: 33355551 DOI: 10.1039/d0cc07115c] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We present a series of synthetic polymer hydrogels which break the traditional correlation between pore size and mechanical properties. The hydrogels are prepared from a dendronised polymer architecture based on a methacrylate copolymer to which poly(amido amine) dendrons are attached. Our approach will be useful in tailoring hydrogels for tissue engineering, controlled drug release, and flexible electronics.
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Affiliation(s)
- Cameron W Evans
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia.
| | - Diwei Ho
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia.
| | - Peter K H Lee
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia.
| | - Adam D Martin
- Dementia Research Centre, Dept of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Ian L Chin
- School of Human Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Zhenli Wei
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia.
| | - Hua Li
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia. and Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Rob Atkin
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia.
| | - Yu Suk Choi
- School of Human Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Marck Norret
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia.
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, UNSW Sydney, NSW 2052, Australia
| | - K Swaminathan Iyer
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia.
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17
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Behl S, Farahani AD, Raju, Rajan G, Ellakwa A, Farrar P, Thordarson P, Prusty BG. Evaluation of rheological behaviour of flowable dental composites reinforced with low aspect ratio micro-sized glass fibres. Dent Mater 2020; 37:131-142. [PMID: 33309321 DOI: 10.1016/j.dental.2020.10.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 07/22/2020] [Accepted: 10/24/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Experimental investigation is carried out to determine the flowability and stickiness of the developed composite material for dental restoration containing low aspect ratio (AR ≤ 100) surface treated micro-sized glass fibres. METHODS Specimens are manufactured by mixing low AR (50/70/100) micro-sized glass fibres with two different weight fractions (5%/10%) into UDMA/TEGDMA based resin. Particulate filler composite (PFC) containing 55% glass fillers is used as the control group. Dynamic oscillatory strain sweep tests are conducted to analyse the linear viscoelastic behaviour. Solid-to fluidic transition behaviour of dental composites is also calculated in terms of flow and yield stresses. Furthermore, the oscillatory frequency sweep tests are conducted at three different strains (0.5%, 5% and 50%) resembling the positioning of unset paste onto restorations for different real-life clinical situations. Additionally, stickiness of dental composites with handling instrument (steel) and dentine covered with bonding agent is also evaluated. RESULTS The results suggested the all the FRC groups exhibited non-Newtonian, shear-thinning behaviour. It is further established that inclusion of 5% of 50/70AR fibres into dental composites does not affect the flowability. Simultaneously, stickiness with dentine covered with bonding agent is more for these two compositions as compared to that of handling instrument (steel). SIGNIFICANCE This study suggest that visco-elastic properties of dental composites are greatly affected by the type of filler (spherical shaped particulate fillers or rod-shaped fibres) as well as fibre weight fraction/fibre AR. This phenomenon can be attributed to the varying interactions between micro-sized fibres of different AR/weight fraction, particulate fillers and monomers.
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Affiliation(s)
- Sonam Behl
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW, 2052, Australia.
| | | | - Raju
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW, 2052, Australia.
| | - Ginu Rajan
- School of Electrical, Computer & Telecommunications Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia.
| | - Ayman Ellakwa
- Prosthodontics and Oral Rehabilitation, School of Dentistry, University of Sydney, Sydney, NSW, 2010, Australia.
| | - Paul Farrar
- SDI Limited, Bayswater, VIC, 3153, Australia.
| | - Pall Thordarson
- School of Chemistry, University of New South Wales, Sydney, NSW, 2052, Australia.
| | - B Gangadhara Prusty
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW, 2052, Australia; ARC Centre for Automated Manufacture of Advanced Composites, School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
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18
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Shariev A, Menounos S, Laos AJ, Laxman P, Lai D, Hua S, Zinger A, McRae CR, Casbolt LS, Combes V, Smith G, Hung TT, Dixon KM, Thordarson P, Mason RS, Das A. Skin protective and regenerative effects of RM191A, a novel superoxide dismutase mimetic. Redox Biol 2020; 38:101790. [PMID: 33202300 PMCID: PMC7677716 DOI: 10.1016/j.redox.2020.101790] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/12/2020] [Accepted: 11/02/2020] [Indexed: 12/31/2022] Open
Abstract
Superoxide dismutase (SOD) is known to be protective against oxidative stress-mediated skin dysfunction. Here we explore the potential therapeutic activities of RM191A, a novel SOD mimetic, on skin. RM191A is a water-soluble dimeric copper (Cu2+-Cu3+)-centred polyglycine coordination complex. It displays 10-fold higher superoxide quenching activity compared to SOD as well as significant antioxidant, anti-inflammatory and immunomodulatory activities through beneficial modulation of several significant inflammatory cytokines in vitro and in vivo. We tested the therapeutic potential of RM191A in a topical gel using a human skin explant model and observed that it significantly inhibits UV-induced DNA damage in the epidermis and dermis, including cyclobutane pyrimidine dimers (CPD), 8-oxo-guanine (8-oxoG) and 8-nitroguanine (8NGO). RM191A topical gel is found to be non-toxic, non-teratogenic and readily distributed in the body of mice. Moreover, it significantly accelerates excisional wound healing, reduces 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammation and attenuates age-associated oxidative stress in skin, demonstrating both skin regenerative and geroprotective properties of RM191A. RM191A is a Cu3+ containing coordination complex with 10-fold higher superoxide quenching activity compared to superoxide dismutase. RM191A exhibits potent antioxidant, anti-inflammatory and immunomodulatory properties in vitro and in vivo. RM191A protects human skin explants against UV-induced oxidative stress and DNA damage. RM191A is non-toxic, non-teratogenic and readily bioavailable in mice. RM191A promotes wound healing, and attenuates TPA-induced inflammation as well as age-associated oxidative stress in mouse skin.
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Affiliation(s)
- Artur Shariev
- Department of Anatomy and Histology, School of Medical Sciences, University of Sydney, Australia; Bosch Institute, Faculty of Medicine and Health, University of Sydney, Australia
| | - Spiro Menounos
- St. George and Sutherland Clinical School, University of New South Wales, Sydney, Australia
| | - Alistair J Laos
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, Australia
| | - Pooja Laxman
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, Australia
| | - Donna Lai
- Bosch Institute, Faculty of Medicine and Health, University of Sydney, Australia
| | - Sheng Hua
- Bosch Institute, Faculty of Medicine and Health, University of Sydney, Australia
| | - Anna Zinger
- Department of Pathology, Faculty of Medicine and Health, University of Sydney, Australia
| | - Christopher R McRae
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, Australia
| | - Llewellyn S Casbolt
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
| | - Valery Combes
- School of Life Sciences, University of Technology, Sydney, Australia
| | - Greg Smith
- School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Tzong-Tyng Hung
- Biological Resources Imaging Laboratory, University of New South Wales, Sydney, Australia
| | - Katie M Dixon
- Department of Anatomy and Histology, School of Medical Sciences, University of Sydney, Australia; Bosch Institute, Faculty of Medicine and Health, University of Sydney, Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, Australia
| | - Rebecca S Mason
- Bosch Institute, Faculty of Medicine and Health, University of Sydney, Australia; Department of Physiology, School of Medical Sciences, University of Sydney, Australia
| | - Abhirup Das
- St. George and Sutherland Clinical School, University of New South Wales, Sydney, Australia.
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Affiliation(s)
- Chelsea R. Forest
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology The University of New South Wales Sydney New South Wales Australia
| | - Caitlin A. C. Silva
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology The University of New South Wales Sydney New South Wales Australia
| | - Pall Thordarson
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology The University of New South Wales Sydney New South Wales Australia
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20
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Urbina‐Blanco CA, Jilani SZ, Speight IR, Bojdys MJ, Friščić T, Stoddart JF, Nelson TL, Mack J, Robinson RAS, Waddell EA, Lutkenhaus JL, Godfrey M, Abboud MI, Aderinto SO, Aderohunmu D, Bibič L, Borges J, Dong VM, Ferrins L, Fung FM, John T, Lim FPL, Masters SL, Mambwe D, Thordarson P, Titirici M, Tormet‐González GD, Unterlass MM, Wadle A, Yam VW, Yang Y. A Diverse View of Science to Catalyse Change. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Safia Z. Jilani
- Department of Chemistry Georgetown University Washington DC 20057 USA
| | - Isaiah R. Speight
- Department of Chemistry Vanderbilt University Nashville TN 37235 USA
| | - Michael J. Bojdys
- Department of Chemistry, King's College, London (UK) and Department of Chemistry Humboldt-Universität zu Berlin Berlin 12489 Germany
| | - Tomislav Friščić
- Department of Chemistry McGill University Montréal QC H3A 0B8 Canada
| | - J. Fraser Stoddart
- Department of Chemistry Northwestern University Evanston IL 60208 USA
- Institute for Molecular Design and Synthesis Tianjin University Tianjin 300072 People's Republic of China
- School of Chemistry University of New South Wales Sydney NSW 2052 Australia
| | - Toby L. Nelson
- Department of Chemistry Oklahoma State University Stillwater OK 74078 USA
| | - James Mack
- Department of Chemistry University of Cincinnati Cincinnati OH 45221 USA
| | | | - Emanuel A. Waddell
- Department of Chemistry University of Alabama in Huntsville Huntsville AL 35899 USA
| | - Jodie L. Lutkenhaus
- Artie McFerrin Department of Chemical Engineering Texas A&M University College Station TX 77843 USA
| | - Murrell Godfrey
- Department of Chemistry The University of Mississippi University MS 38677 USA
| | - Martine I. Abboud
- Department of Chemistry University of Oxford Chemistry Research Laboratory Oxford OX1 3TA UK
| | | | - Damilola Aderohunmu
- Department of Chemistry Covenant University, CST, Canaanland Ota Ogun State Nigeria
| | - Lučka Bibič
- School of Pharmacy University of East Anglia Norwich NR4 7TJ UK
| | - João Borges
- Department of Chemistry CICECO—Aveiro Institute of Materials University of Aveiro Campus Universitário de Santiago Aveiro 3810-193 Portugal
| | - Vy M. Dong
- Department of Chemistry University of California Irvine CA 92697 USA
| | - Lori Ferrins
- Department of Chemistry and Chemical Biology Northeastern University Boston MA 02115 USA
| | - Fun Man Fung
- Department of Chemistry National University of Singapore Singapore 117543 Singapore
| | - Torsten John
- Leibniz Institute of Surface Engineering (IOM) Leipzig 04318 Germany
| | - Felicia P. L. Lim
- School of Pharmacy Monash University Malaysia Selangor Darul Ehsan 47500 Malaysia
| | - Sarah L. Masters
- School of Physical and Chemical Sciences University of Canterbury Christchurch 8140 New Zealand
| | - Dickson Mambwe
- Department of Chemistry University of Cape Town Rondebosch Capetown 7701 South Africa
| | - Pall Thordarson
- School of Chemistry The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology The University of New South Wales Sydney NSW 2052 Australia
| | - Maria‐Magdalena Titirici
- Department of Chemical Engineering Imperial College London South Kensington Campus London SW7 2AZ UK
| | | | - Miriam M. Unterlass
- Institute of Materials Chemistry Technische Universität Wien Vienna 1060 Austria
| | - Austin Wadle
- Department of Civil & Environmental Engineering Duke University Pratt School of Engineering Durham NC 27708 USA
| | - Vivian W.‐W. Yam
- Institute of Molecular Functional Materials and Department of Chemistry The University of Hong Kong Hong Kong People's Republic of China
| | - Ying‐Wei Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC) College of Chemistry Jilin University Changchun 130012 People's Republic of China
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21
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Urbina‐Blanco CA, Jilani SZ, Speight IR, Bojdys MJ, Friščić T, Stoddart JF, Nelson TL, Mack J, Robinson RAS, Waddell EA, Lutkenhaus JL, Godfrey M, Abboud MI, Aderinto SO, Aderohunmu D, Bibič L, Borges J, Dong VM, Ferrins L, Fung FM, John T, Lim FPL, Masters SL, Mambwe D, Thordarson P, Titirici M, Tormet‐González GD, Unterlass MM, Wadle A, Yam VW, Yang Y. A Diverse View of Science to Catalyse Change. Angew Chem Int Ed Engl 2020; 59:18306-18310. [PMID: 33448562 PMCID: PMC7590070 DOI: 10.1002/anie.202009834] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Indexed: 12/03/2022]
Abstract
Valuing diversity leads to scientific excellence, the progress of science and most importantly, it is simply the right thing to do. We can value diversity not only in words, but also in actions.
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Affiliation(s)
| | - Safia Z. Jilani
- Department of ChemistryGeorgetown UniversityWashingtonDC20057USA
| | | | - Michael J. Bojdys
- Department of Chemistry, King's College, London (UK) and Department of ChemistryHumboldt-Universität zu BerlinBerlin12489Germany
| | | | - J. Fraser Stoddart
- Department of ChemistryNorthwestern UniversityEvanstonIL60208USA
- Institute for Molecular Design and SynthesisTianjin UniversityTianjin300072People's Republic of China
- School of ChemistryUniversity of New South WalesSydneyNSW2052Australia
| | - Toby L. Nelson
- Department of ChemistryOklahoma State UniversityStillwaterOK74078USA
| | - James Mack
- Department of ChemistryUniversity of CincinnatiCincinnatiOH45221USA
| | | | - Emanuel A. Waddell
- Department of ChemistryUniversity of Alabama in HuntsvilleHuntsvilleAL35899USA
| | - Jodie L. Lutkenhaus
- Artie McFerrin Department of Chemical EngineeringTexas A&M UniversityCollege StationTX77843USA
| | - Murrell Godfrey
- Department of ChemistryThe University of MississippiUniversityMS38677USA
| | - Martine I. Abboud
- Department of ChemistryUniversity of Oxford Chemistry Research LaboratoryOxfordOX1 3TAUK
| | | | - Damilola Aderohunmu
- Department of ChemistryCovenant University, CST, CanaanlandOtaOgun StateNigeria
| | - Lučka Bibič
- School of PharmacyUniversity of East AngliaNorwichNR4 7TJUK
| | - João Borges
- Department of ChemistryCICECO—Aveiro Institute of MaterialsUniversity of AveiroCampus Universitário de SantiagoAveiro3810-193Portugal
| | - Vy M. Dong
- Department of ChemistryUniversity of CaliforniaIrvineCA92697USA
| | - Lori Ferrins
- Department of Chemistry and Chemical BiologyNortheastern UniversityBostonMA02115USA
| | - Fun Man Fung
- Department of ChemistryNational University of SingaporeSingapore117543Singapore
| | - Torsten John
- Leibniz Institute of Surface Engineering (IOM)Leipzig04318Germany
| | - Felicia P. L. Lim
- School of PharmacyMonash University MalaysiaSelangor Darul Ehsan47500Malaysia
| | - Sarah L. Masters
- School of Physical and Chemical SciencesUniversity of CanterburyChristchurch8140New Zealand
| | - Dickson Mambwe
- Department of ChemistryUniversity of Cape TownRondeboschCapetown7701South Africa
| | - Pall Thordarson
- School of ChemistryThe Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and TechnologyThe University of New South WalesSydneyNSW2052Australia
| | | | | | - Miriam M. Unterlass
- Institute of Materials ChemistryTechnische Universität WienVienna1060Austria
| | - Austin Wadle
- Department of Civil & Environmental EngineeringDuke University Pratt School of EngineeringDurhamNC27708USA
| | - Vivian W.‐W. Yam
- Institute of Molecular Functional Materials and Department of ChemistryThe University of Hong KongHong KongPeople's Republic of China
| | - Ying‐Wei Yang
- State Key Laboratory of Inorganic Synthesis and Preparative ChemistryInternational Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)College of ChemistryJilin UniversityChangchun130012People's Republic of China
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22
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Urbina-Blanco CA, Jilani SZ, Speight IR, Bojdys MJ, Friščić T, Stoddart JF, Nelson TL, Mack J, Robinson RA, Waddell EA, Lutkenhaus JL, Godfrey M, Abboud MI, Aderinto SO, Aderohunmu D, Bibič L, Borges J, Dong VM, Ferrins L, Fung FM, John T, Lim FP, Masters SL, Mambwe D, Thordarson P, Titirici MM, Tormet-González GD, Unterlass MM, Wadle A, Yam VWW, Yang YW. A diverse view of science to catalyse change: valuing diversity leads to scientific excellence, the progress of science and, most importantly, it is simply the right thing to do. We must value diversity not only in words, but also in actions. CAN J CHEM 2020. [DOI: 10.1139/cjc-2020-0323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Safia Z. Jilani
- Department of Chemistry, Georgetown University, Washington, D.C., United States
| | | | - Michael J. Bojdys
- Department of Chemistry, King’s College London, London, UK
- Department of Chemistry, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Tomislav Friščić
- Department of Chemistry, McGill University, Montréal, Quebec, Canada
| | - J. Fraser Stoddart
- Department of Chemistry, Northwestern University, Evanston, IL, USA
- Institute for Molecular Design and Synthesis, Tianjin University, Tianjin, People’s Republic of China
- School of Chemistry, University of New South Wales, Sydney, New South Wales, Australia
| | - Toby L. Nelson
- Department of Chemistry, Oklahoma State University, Stillwater, OK, USA
| | - James Mack
- Department of Chemistry, University of Cincinnati, Cincinnati, OH, USA
| | | | - Emanuel A. Waddell
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL, USA
| | - Jodie L. Lutkenhaus
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, USA
| | - Murrell Godfrey
- Department of Chemistry, The University of Mississippi, University, MS, USA
| | - Martine I. Abboud
- Department of Chemistry, University of Oxford Chemistry Research Laboratory, Oxford, UK
| | | | - Damilola Aderohunmu
- Department of Chemistry, Covenant University, CST, Canaanland, Ogun State, Nigeria
| | - Lučka Bibič
- School of Pharmacy, University of East Anglia, Norwich, UK
| | - João Borges
- Department of Chemistry, CICECO – Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Vy M. Dong
- Department of Chemistry, University of California, Irvine, CA, USA
| | - Lori Ferrins
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Fun Man Fung
- Department of Chemistry, National University of Singapore, Singapore
| | - Torsten John
- Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany
| | - Felicia P.L. Lim
- School of Pharmacy, Monash University Malaysia, Selangor Darul Ehsan, Malaysia
| | - Sarah L. Masters
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand
| | - Dickson Mambwe
- Department of Chemistry, University of Cape Town, Rondebosch, Capetown, South Africa
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, New South Wales, Australia
| | - Maria-Magdalena Titirici
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, UK
| | | | - Miriam M. Unterlass
- Institute of Materials Chemistry, Technische Universität Wien, Vienna, Austria
| | - Austin Wadle
- Department of Civil & Environmental Engineering, Duke University Pratt School of Engineering, Durham, NC, USA
| | - Vivian W.-W. Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People’s Republic of China
| | - Ying-Wei Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, Changchun, People’s Republic of China
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23
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Urbina-Blanco CA, Jilani SZ, Speight IR, Bojdys MJ, Friščić T, Stoddart JF, Nelson TL, Mack J, Robinson RAS, Waddell EA, Lutkenhaus JL, Godfrey M, Abboud MI, Aderinto SO, Aderohunmu D, Bibič L, Borges J, Dong VM, Ferrins L, Fung FM, John T, Lim FPL, Masters SL, Mambwe D, Thordarson P, Titirici MM, Tormet-González GD, Unterlass MM, Wadle A, Yam VWW, Yang YW. A Diverse View of Science to Catalyse Change. J Am Chem Soc 2020; 142:14393-14396. [PMID: 32803980 DOI: 10.1021/jacs.0c07877] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Safia Z Jilani
- Department of Chemistry, Georgetown University, Washington, DC, United States
| | - Isaiah R Speight
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, United States
| | - Michael J Bojdys
- Department of Chemistry, King's College London, London, United Kingdon.,Department of Chemistry, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Tomislav Friščić
- Department of Chemistry, McGill University, Montréal, Quebec, Canada
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, Evanston, Illinois, United States.,Institute for Molecular Design and Synthesis, Tianjin University, Tianjin, People's Republic of China.,School of Chemistry, University of New South Wales, Sydney, New South Wales, Australia
| | - Toby L Nelson
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma, United States
| | - James Mack
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio, United States
| | - Renã A S Robinson
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, United States
| | - Emanuel A Waddell
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, Alabama, United States
| | - Jodie L Lutkenhaus
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas, United States
| | - Murrell Godfrey
- Department of Chemistry, The University of Mississippi, University, Mississippi, United States
| | - Martine I Abboud
- Department of Chemistry, University of Oxford Chemistry Research Laboratory, Oxford, United Kingdom
| | - Stephen O Aderinto
- Department of Chemistry, The University of Sheffield, Sheffield, United Kingdom
| | - Damilola Aderohunmu
- Department of Chemistry, Covenant University, CST, Canaanland, Ogun State, Nigeria
| | - Lučka Bibič
- School of Pharmacy, University of East Anglia, Norwich, United Kingdom
| | - João Borges
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Vy M Dong
- Department of Chemistry, University of California, Irvine, California, United States
| | - Lori Ferrins
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts, United States
| | - Fun Man Fung
- Department of Chemistry, National University of Singapore, Singapore
| | - Torsten John
- Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany
| | - Felicia P L Lim
- School of Pharmacy, Monash University Malaysia, Selangor Darul Ehsan, Malaysia
| | - Sarah L Masters
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand
| | - Dickson Mambwe
- Department of Chemistry, University of Cape Town, Rondebosch, Capetown, South Africa
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, New South Wales, Australia
| | - Maria-Magdalena Titirici
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, United Kingdom
| | | | - Miriam M Unterlass
- Institute of Materials Chemistry, Technische Universität Wien, Vienna, Austria
| | - Austin Wadle
- Department of Civil & Environmental Engineering, Duke University Pratt School of Engineering, Durham, North Carolina, United States
| | - Vivian W-W Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Ying-Wei Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, Changchun, People's Republic of China
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24
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Balakit AA, Makki SQ, Sert Y, Ucun F, Alshammari MB, Thordarson P, El-Hiti GA. Synthesis, spectrophotometric and DFT studies of new Triazole Schiff bases as selective naked-eye sensors for acetate anion. Supramol Chem 2020. [DOI: 10.1080/10610278.2020.1808217] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Sajjad Q. Makki
- Department of Pharmacy, AlSafwa University College, Karbala, Iraq
| | - Yusuf Sert
- Department of Physics, Faculty of Art & Sciences, Bozok University, Yozgat, Turkey
- Sorgun Vocational School, Bozok University, Yozgat, Turkey
| | - Fatih Ucun
- Department of Physics, Faculty of Art & Sciences, Süleyman Demirel University, Isparta, Turkey
| | - Mohammed B. Alshammari
- Department of Chemistry, College of Science and Humanities Studies in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Pall Thordarson
- School of Chemistry, The University of New South Wales, Sydney, Australia
| | - Gamal A. El-Hiti
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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25
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Wojciechowski JP, Martin AD, Du EY, Garvey CJ, Nordon RE, Thordarson P. Correction: Non-reversible heat-induced gelation of a biocompatible Fmoc-hexapeptide in water. Nanoscale 2020; 12:15905. [PMID: 32729863 DOI: 10.1039/d0nr90160a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Correction for 'Non-reversible heat-induced gelation of a biocompatible Fmoc-hexapeptide in water' by Jonathan P. Wojciechowski et al., Nanoscale, 2020, 12, 8262-8267, DOI: .
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Affiliation(s)
- Jonathan P Wojciechowski
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre for Convergent Bio-Nano Science & Technology, University of New South Wales, Sydney, NSW, Australia.
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26
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Romana B, Hassan MM, Sonvico F, Garrastazu Pereira G, Mason AF, Thordarson P, Bremmell KE, Barnes TJ, Prestidge CA. A liposome-micelle-hybrid (LMH) oral delivery system for poorly water-soluble drugs: Enhancing solubilisation and intestinal transport. Eur J Pharm Biopharm 2020; 154:338-347. [PMID: 32739535 DOI: 10.1016/j.ejpb.2020.07.022] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/14/2020] [Accepted: 07/21/2020] [Indexed: 12/31/2022]
Abstract
A novel liposome-micelle-hybrid (LMH) carrier system was developed as a superior oral drug delivery platform compared to conventional liposome or micelle formulations. The optimal LMH system was engineered by encapsulating TPGS micelles in the aqueous core of liposomes and its efficacy for oral delivery was demonstrated using lovastatin (LOV) as a model poorly soluble drug with P-gp (permeability glycoprotein) limited intestinal absorption. LOV-LMH was characterised as unilamellar, spherical vesicles encapsulating micellar structures within the interior aqueous core and showing an average diameter below 200 nm. LMH demonstrated enhanced drug loading, water apparent solubility and extended/controlled release of LOV compared to conventional liposomes and micelles. LMH exhibited enhanced LOV absorption and transportation in a Caco-2 cell monolayer model of the intestine by inhibiting the P-gp transporter system compared to free LOV. The LMH system is a promising novel oral delivery approach for enhancing bioavailability of poorly water-soluble drugs, especially those presenting P-gp effluxes limited absorption.
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Affiliation(s)
- Bilquis Romana
- School of Chemistry, The Australian Centre for Nanomedicine and The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW 2052, Australia; University of South Australia, Clinical and Health Sciences, Adelaide, South Australia 5000, Australia
| | - Md Musfizur Hassan
- School of Chemistry, The Australian Centre for Nanomedicine and The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Fabio Sonvico
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Gabriela Garrastazu Pereira
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Alex F Mason
- School of Chemistry, The Australian Centre for Nanomedicine and The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Kristen E Bremmell
- University of South Australia, Clinical and Health Sciences, Adelaide, South Australia 5000, Australia
| | - Timothy J Barnes
- University of South Australia, Clinical and Health Sciences, Adelaide, South Australia 5000, Australia
| | - Clive A Prestidge
- University of South Australia, Clinical and Health Sciences, Adelaide, South Australia 5000, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of South Australia, Mawson Lakes Campus, Mawson Lakes 5095, Australia.
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27
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Tjandra KC, Forest CR, Wong CK, Alcantara S, Kelly HG, Ju Y, Stenzel MH, McCarroll JA, Kavallaris M, Caruso F, Kent SJ, Thordarson P. Modulating the Selectivity and Stealth Properties of Ellipsoidal Polymersomes through a Multivalent Peptide Ligand Display. Adv Healthc Mater 2020; 9:e2000261. [PMID: 32424998 DOI: 10.1002/adhm.202000261] [Citation(s) in RCA: 9] [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] [Received: 02/17/2020] [Revised: 04/20/2020] [Indexed: 12/16/2022]
Abstract
There is a need for improved nanomaterials to simultaneously target cancer cells and avoid non-specific clearance by phagocytes. An ellipsoidal polymersome system is developed with a unique tunable size and shape property. These particles are functionalized with in-house phage-display cell-targeting peptide to target a medulloblastoma cell line in vitro. Particle association with medulloblastoma cells is modulated by tuning the peptide ligand density on the particles. These polymersomes has low levels of association with primary human blood phagocytes. The stealth properties of the polymersomes are further improved by including the peptide targeting moiety, an effect that is likely driven by the peptide protecting the particles from binding blood plasma proteins. Overall, this ellipsoidal polymersome system provides a promising platform to explore tumor cell targeting in vivo.
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Affiliation(s)
- Kristel C. Tjandra
- School of ChemistryThe University of New South Wales Sydney NSW 2052 Australia
- Australian Centre for NanomedicineThe University of New South Wales Sydney NSW 2052 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
| | - Chelsea R. Forest
- School of ChemistryThe University of New South Wales Sydney NSW 2052 Australia
- Australian Centre for NanomedicineThe University of New South Wales Sydney NSW 2052 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
| | - Chin Ken Wong
- School of ChemistryThe University of New South Wales Sydney NSW 2052 Australia
- Australian Centre for NanomedicineThe University of New South Wales Sydney NSW 2052 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
| | - Sheilajen Alcantara
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
- Department of Microbiology and ImmunologyThe University of Melbourne at the Peter Doherty Institute for Infection and Immunity Parkville VIC 3000 Australia
| | - Hannah G. Kelly
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
- Department of Microbiology and ImmunologyThe University of Melbourne at the Peter Doherty Institute for Infection and Immunity Parkville VIC 3000 Australia
| | - Yi Ju
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
- Department of Chemical EngineeringThe University of Melbourne Parkville VIC 3010 Australia
| | - Martina H. Stenzel
- School of ChemistryThe University of New South Wales Sydney NSW 2052 Australia
- School of ChemistryCentre for Advanced Macromolecular Design (CAMD)The University of New South Wales Sydney NSW 2052 Australia
| | - Joshua A. McCarroll
- Australian Centre for NanomedicineThe University of New South Wales Sydney NSW 2052 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
- Translational Cancer Nanomedicine ThemeChildren's Cancer InstituteLowy Cancer Research CentreThe University of New South Wales Sydney NSW 2031 Australia
- School of Women's and Children's HealthFaculty of MedicineThe University of New South Wales Sydney NSW 2052 Australia
| | - Maria Kavallaris
- Australian Centre for NanomedicineThe University of New South Wales Sydney NSW 2052 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
- Translational Cancer Nanomedicine ThemeChildren's Cancer InstituteLowy Cancer Research CentreThe University of New South Wales Sydney NSW 2031 Australia
- School of Women's and Children's HealthFaculty of MedicineThe University of New South Wales Sydney NSW 2052 Australia
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
- Department of Chemical EngineeringThe University of Melbourne Parkville VIC 3010 Australia
| | - Stephen J. Kent
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
- Department of Microbiology and ImmunologyThe University of Melbourne at the Peter Doherty Institute for Infection and Immunity Parkville VIC 3000 Australia
| | - Pall Thordarson
- School of ChemistryThe University of New South Wales Sydney NSW 2052 Australia
- Australian Centre for NanomedicineThe University of New South Wales Sydney NSW 2052 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology Australia
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28
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Ariawan AD, Sun B, Wojciechowski JP, Lin I, Du EY, Goodchild SC, Cranfield CG, Ittner LM, Thordarson P, Martin AD. Effect of polar amino acid incorporation on Fmoc-diphenylalanine-based tetrapeptides. Soft Matter 2020; 16:4800-4805. [PMID: 32400837 DOI: 10.1039/d0sm00320d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Peptide hydrogels show great promise as extracellular matrix mimics due to their tuneable, fibrous nature. Through incorporation of polar cationic, polar anionic or polar neutral amino acids into the Fmoc-diphenylalanine motif, we show that electrostatic charge plays a key role in the properties of the subsequent gelators. Specifically, we show that an inverse relationship exists for biocompatibility in the solution state versus the gel state for cationic and anionic peptides. Finally, we use tethered bilayer lipid membrane (tBLM) experiments to suggest a likely mode of cytotoxicity for tetrapeptides which exhibit cytotoxicity in the solution state.
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Affiliation(s)
- A Daryl Ariawan
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW 2109, Australia.
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29
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Duché G, Thordarson P, Kearnes M. The importance of reflecting on treatment and post-treatment care when assessing the social aspects of cosmetic nanomedicine and transdermal delivery system. Nanomedicine 2020; 28:102214. [PMID: 32360550 DOI: 10.1016/j.nano.2020.102214] [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] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/03/2020] [Accepted: 03/12/2020] [Indexed: 10/24/2022]
Abstract
In the field of nanomedicine, the development of targeted drug delivery aims to design more effective delivery systems that directly target cancer cells and tumours. The development of transdermal delivery mechanisms is promising. At the same time, these areas of research raise profound social and ethical questions and are tied to significant transformations in the nature of contemporary healthcare and personal subjectivity. Socio- political consideration of these issues is shaped by a wider set of debates concerning the societal dimensions of nanotechnology. In this paper we report findings from an interdisciplinary research project uilising semi-structured interviews with key-informants engaged in cancer research and health-care. We identified narrative constracts that shaped participants' responses to and understandings of novel nanomedicines. This analysis contributes to a growing body of literature on the social and ethical aspects of nanotechnology and nanomedicine, providing evidence for the engagement of publics in the early stage of technological developments.
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Affiliation(s)
- Geneviève Duché
- School of Chemistry, The University of New South Wales, Sydney, NSW, Australia; Australian Centre for Nanomedicine, and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, Australia.
| | - Pall Thordarson
- School of Chemistry, The University of New South Wales, Sydney, NSW, Australia; Australian Centre for Nanomedicine, and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, Australia
| | - Matthew Kearnes
- Australian Centre for Nanomedicine, and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, Australia; School of Humanities and Languages, The University of New South Wales, Sydney, NSW, Australia
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30
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Wojciechowski JP, Martin AD, Du EY, Garvey CJ, Nordon RE, Thordarson P. Non-reversible heat-induced gelation of a biocompatible Fmoc-hexapeptide in water. Nanoscale 2020; 12:8262-8267. [PMID: 32236222 DOI: 10.1039/d0nr00289e] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hydrogel materials which respond to changes in temperature are widely applicable for injectable drug delivery or tissue engineering applications. Here, we report the unsual heat-induced gelation behaviour of a low molecular weight gelator based on an Fmoc-hexapeptide, Fmoc-GFFRGD. We show that Fmoc-GFFRGD forms kinetically stable fibres when mixed with divalent cations (e.g. Ca2+). Gelation of the mixture occurs upon heating of the mixture which enables electrostatic screening by the divalent cations and hydrophobic collapse of the fibres to give a self-supporting hydrogel network that shows good biocompatibility with L929 fibroblast cells. This work highlights a unique mechanism to initiate heat-induced gelation which should find opportunities as a gelation trigger for injectable hydrogels or fundamental self-assembly applications.
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Affiliation(s)
- Jonathan P Wojciechowski
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre for Convergent Bio-Nano Science & Technology, University of New South Wales, Sydney, NSW 2052, Australia.
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31
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Aldilla VR, Chen R, Martin AD, Marjo CE, Rich AM, Black DS, Thordarson P, Kumar N. Anthranilamide-based Short Peptides Self-Assembled Hydrogels as Antibacterial Agents. Sci Rep 2020; 10:770. [PMID: 31964927 PMCID: PMC6972728 DOI: 10.1038/s41598-019-57342-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 10/11/2019] [Accepted: 12/23/2019] [Indexed: 12/26/2022] Open
Abstract
In this study, we describe the synthesis and molecular properties of anthranilamide-based short peptides which were synthesised via ring opening of isatoic anhydride in excellent yields. These short peptides were incorporated as low molecular weight gelators (LMWG), bola amphiphile, and C3-symmetric molecules to form hydrogels in low concentrations (0.07-0.30% (w/v)). The critical gel concentration (CGC), viscoelastic properties, secondary structure, and fibre morphology of these short peptides were influenced by the aromaticity of the capping group or by the presence of electronegative substituent (namely fluoro) and hydrophobic substituent (such as methyl) in the short peptides. In addition, the hydrogels showed antibacterial activity against S. aureus 38 and moderate toxicity against HEK cells in vitro.
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Affiliation(s)
- Vina R Aldilla
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia
| | - Renxun Chen
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia
| | - Adam D Martin
- Dementia Research Centre, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, 2109, Australia.
| | - Christopher E Marjo
- Mark Wainwright Analytical Centre, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Anne M Rich
- Mark Wainwright Analytical Centre, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - David StC Black
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia
| | - Pall Thordarson
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia
| | - Naresh Kumar
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia.
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Abstract
Self-assembling short peptides have attracted widespread interest due to their tuneable, biocompatible nature and have potential applications in energy materials, tissue engineering, sensing and drug delivery. The hierarchical self-assembly of these peptides is highly dependent on the selection of not only amino acid sequence, but also the capping group which is often employed at the N-terminus of the peptide to drive self-assembly. Although the Fmoc (9H-fluorenylmethyloxycarbonyl) group is commonly used due to its utility in solid phase peptide synthesis, many other aromatic capping groups have been reported which yield functional, responsive materials. This review explores recent developments in the utilisation of functional, aromatic capping groups beyond the Fmoc group for the creation of redox-responsive, fluorescent and drug delivering hydrogel scaffolds.
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Affiliation(s)
- Adam D Martin
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW 2109, Australia.
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of New South Wales, Sydney, NSW 2052, Australia.
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Urbina-Blanco CA, Jilani SZ, Speight IR, Bojdys MJ, Friščić T, Stoddart JF, Nelson TL, Mack J, Robinson RAS, Waddell EA, Lutkenhaus JL, Godfrey M, Abboud MI, Aderinto SO, Aderohunmu D, Bibič L, Borges J, Dong VM, Ferrins L, Fung FM, John T, Lim FPL, Masters SL, Mambwe D, Thordarson P, Titirici MM, Tormet-González GD, Unterlass MM, Wadle A, Yam VWW, Yang YW. A diverse view of science to catalyse change. Chem Sci 2020. [DOI: 10.1039/d0sc90150d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Valuing diversity leads to scientific excellence, the progress of science and, most importantly, it is simply the right thing to do. We must value diversity not only in words, but also in actions.
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Martin AD, Wojciechowski JP, Du EY, Rawal A, Stefen H, Au CG, Hou L, Cranfield CG, Fath T, Ittner LM, Thordarson P. Decoupling the effects of hydrophilic and hydrophobic moieties at the neuron-nanofibre interface. Chem Sci 2019; 11:1375-1382. [PMID: 34123262 PMCID: PMC8148083 DOI: 10.1039/c9sc05686f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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] [Indexed: 11/22/2022] Open
Abstract
Peptide-based nanofibres are a versatile class of tunable materials with applications in optoelectronics, sensing and tissue engineering. However, the understanding of the nanofibre surface at the molecular level is limited. Here, a series of homologous dilysine–diphenylalnine tetrapeptides were synthesised and shown to self-assemble into water-soluble nanofibres. Despite the peptide nanofibres displaying similar morphologies, as evaluated through atomic force microscopy and neutron scattering, significant differences were observed in their ability to support sensitive primary neurons. Contact angle and labelling experiments revealed that differential presentation of lysine moieties at the fibre surface did not affect neuronal viability; however the mobility of phenylalanine residues at the nanofibre surface, elucidated through solid- and gel-state NMR studies and confirmed through tethered bilayer lipid membrane experiments, was found to be the determining factor in governing the suitability of a given peptide as a scaffold for primary neurons. This work offers new insights into characterising and controlling the nanofibre surface at the molecular level. The mobility of hydrophobic moieties at a peptide nanofibre surface determines its suitability as a scaffold for sensitive primary cells.![]()
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Affiliation(s)
- Adam D Martin
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | | | - Eric Y Du
- School of Chemistry, The Australian Centre for Nanomedicine, The ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of New South Wales Sydney NSW 2052 Australia
| | - Aditya Rawal
- NMR Facility, Mark Wainwright Analytical Centre, The University of New South Wales Sydney 2052 New South Wales Australia
| | - Holly Stefen
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Carol G Au
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Liming Hou
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Charles G Cranfield
- School of Life Sciences, University of Technology Sydney Ultimo NSW 2007 Australia
| | - Thomas Fath
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Lars M Ittner
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine, The ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of New South Wales Sydney NSW 2052 Australia
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35
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Sun Y, Gu J, Wang H, Sessler JL, Thordarson P, Lin YJ, Gong H. AAAA-DDDD Quadruple H-Bond-Assisted Ionic Interactions: Robust Bis(guanidinium)/Dicarboxylate Heteroduplexes in Water. J Am Chem Soc 2019; 141:20146-20154. [PMID: 31789022 DOI: 10.1021/jacs.9b09503] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The use of geminal di(guanidinium) and acridin-9(10H)-one-derived di(carboxylate) derivatives (1a-c and 2a-e, respectively) allows stabilization of heterodimers characterized by high binding affinities in water (maximum ΔG < -7 kcal mol-1, Ka > 105 M-1) as inferred from UV-vis spectroscopic titrations and ITC measurements, therefore rivaling or surpassing the interaction energy between the strongest DNA or RNA triplet pairs. These duplexes are readily accessible and are structurally modifiable, rendering them attractive as building blocks for creating heteroduplex constructs. Incorporating poly(ethylene glycol)-decorated benzyl groups into the dicarboxylate, allows formation of hydrogels in the case of 1b-2c.
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Affiliation(s)
- Yuren Sun
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis, and Department of Chemistry , Shanghai University , 99 Shang-Da Road , Shanghai 200444 , China
| | - Jun Gu
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis, and Department of Chemistry , Shanghai University , 99 Shang-Da Road , Shanghai 200444 , China
| | - Hongyu Wang
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis, and Department of Chemistry , Shanghai University , 99 Shang-Da Road , Shanghai 200444 , China
| | - Jonathan L Sessler
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis, and Department of Chemistry , Shanghai University , 99 Shang-Da Road , Shanghai 200444 , China
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of New South Wales , Sydney 2052 , NSW , Australia
| | - Yue-Jian Lin
- Department of Chemistry , Fudan University , 220 Handan Road , 200433 , Shanghai , China
| | - Hegui Gong
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis, and Department of Chemistry , Shanghai University , 99 Shang-Da Road , Shanghai 200444 , China
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36
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Kudisch M, Lim CH, Thordarson P, Miyake GM. Energy Transfer to Ni-Amine Complexes in Dual Catalytic, Light-Driven C-N Cross-Coupling Reactions. J Am Chem Soc 2019; 141:19479-19486. [PMID: 31714761 DOI: 10.1021/jacs.9b11049] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Dual catalytic light-driven cross-coupling methodologies utilizing a Ni(II) salt with a photocatalyst (PC) have emerged as promising methodologies to forge aryl C-N bonds under mild conditions. The recent discovery that the PC can be omitted and the Ni(II) complex directly photoexcited suggests that the PC may perform energy transfer (EnT) to the Ni(II) complex, a mechanistic possibility that has recently been proposed in other systems across dual Ni photocatalysis. Here, we report the first studies in this field capable of distinguishing EnT from electron transfer (ET), and the results are consistent with Förster-type EnT from the excited state [Ru(bpy)3]Cl2 PC to Ni-amine complexes. The structure and speciation of Ni-amine complexes that are the proposed EnT acceptors were elucidated by crystallography and spectroscopic binding studies. With the acceptors known, quantitative Förster theory was utilized to predict the ratio of quenching rate constants upon changing the PC, enabling selection of an organic phenoxazine PC that proved to be more effective in catalyzing C-N cross-coupling reactions with a diverse selection of amines and aryl halides.
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Affiliation(s)
- Max Kudisch
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Chern-Hooi Lim
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States.,New Iridium LLC , Boulder , Colorado 80303 , United States
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology , The University of New South Wales , Sydney , NSW 2052 , Australia
| | - Garret M Miyake
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
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37
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Gerz I, Lindh EM, Thordarson P, Edman L, Kullgren J, Mindemark J. Oligomer Electrolytes for Light-Emitting Electrochemical Cells: Influence of the End Groups on Ion Coordination, Ion Binding, and Turn-on Kinetics. ACS Appl Mater Interfaces 2019; 11:40372-40381. [PMID: 31621280 DOI: 10.1021/acsami.9b15233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The electrolyte is an essential constituent of the light-emitting electrochemical cell (LEC), since its operating mechanism is dependent on the redistribution of mobile ions in the active layer. Recent developments of new ion transporters have yielded high-performance devices, but knowledge about the interactions between the ionic species and the ion transporters and the influence of these interactions on the LEC performance is lacking. We therefore present a combined computational and experimental effort that demonstrates that the selection of the end group in a star-branched oligomeric ion transporter based on trimethylolpropane ethoxylate has a paramount influence on the ionic interactions in the electrolyte and thereby also on the performance of the corresponding LECs. With hydroxyl end groups, the cation from the salt is strongly coordinated to the ion transporter, which leads to suppression of ion pairing, but the penalty is a hindered ion release and a slow turn-on for the LEC devices. With methoxy end groups, an intermediate coordination strength is seen together with the formation of contact ion pairs, but the LEC performance is very good with fast turn-on. Using a series of ion transporters with alkyl carbonate end groups, the ion transporter:cation coordination strength is lowered further, but the turn-on kinetics are slower than what is seen for devices comprising the methoxy end-capped ion transporter.
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Affiliation(s)
- Isabelle Gerz
- Department of Chemistry-Ångström Laboratory , Uppsala University , Box 538, SE-751 21 Uppsala , Sweden
| | - E Mattias Lindh
- The Organic Photonics and Electronics Group, Department of Physics , Umeå University , SE-901 87 Umeå , Sweden
| | - Pall Thordarson
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Ludvig Edman
- The Organic Photonics and Electronics Group, Department of Physics , Umeå University , SE-901 87 Umeå , Sweden
| | - Jolla Kullgren
- Department of Chemistry-Ångström Laboratory , Uppsala University , Box 538, SE-751 21 Uppsala , Sweden
| | - Jonas Mindemark
- Department of Chemistry-Ångström Laboratory , Uppsala University , Box 538, SE-751 21 Uppsala , Sweden
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38
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Tjandra KC, McCarthy N, Yang L, Laos AJ, Sharbeen G, Phillips PA, Forgham H, Sagnella SM, Whan RM, Kavallaris M, Thordarson P, McCarroll JA. Identification of Novel Medulloblastoma Cell-Targeting Peptides for Use in Selective Chemotherapy Drug Delivery. J Med Chem 2019; 63:2181-2193. [DOI: 10.1021/acs.jmedchem.9b00851] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Kristel C. Tjandra
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Nigel McCarthy
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
| | - Lu Yang
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
| | - Alistair J. Laos
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - George Sharbeen
- Pancreatic Cancer Translational Research Group, Lowy Cancer Research Centre, and School of Medical Sciences, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Phoebe A. Phillips
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- Pancreatic Cancer Translational Research Group, Lowy Cancer Research Centre, and School of Medical Sciences, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Helen Forgham
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Women’s and Children’s Health, Faculty of Medicine, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Sharon M. Sagnella
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
| | - Renee M. Whan
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- Biomedical Imaging Facility Mark Wainwright Analytical Centre, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Maria Kavallaris
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Women’s and Children’s Health, Faculty of Medicine, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Pall Thordarson
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Joshua A. McCarroll
- Tumour Biology & Targeting Program, Children’s Cancer Institute, UNSW Sydney, Lowy Cancer Research Centre, Sydney, NSW 2031, Australia
- Australian Centre for Nanomedicine, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, UNSW Sydney, Sydney, NSW 2052, Australia
- School of Women’s and Children’s Health, Faculty of Medicine, UNSW Sydney, Sydney, NSW 2052, Australia
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39
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Khiabani PS, Soeriyadi AH, Nam EV, Peterson JR, Webb JEA, Thordarson P, Donald WA, Gooding JJ. Understanding the performance of a paper-based UV exposure sensor: The photodegradation mechanism of brilliant blue FCF in the presence of TiO 2 photocatalysts in both the solid state and solution. Rapid Commun Mass Spectrom 2019; 33:1076-1083. [PMID: 30900784 DOI: 10.1002/rcm.8442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 03/15/2019] [Accepted: 03/18/2019] [Indexed: 06/09/2023]
Abstract
RATIONALE The decolouration of brilliant blue FCF by the action of titanium dioxide (TiO2 ) under ultraviolet (UV) exposure has been recently reported as the basis of a paper-based sensor for monitoring UV sun exposure. The mechanism of brilliant blue FCF photodegradation in the presence of the photocatalyst and the resulting photoproducts are thus far unknown. METHODS The UV-initiated photodegradation of brilliant blue FCF in the presence of TiO2 for both the aqueous and the solid state was investigated. Degradation in the solid state was observed using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-MS). Decomposition of the dye in the aqueous state was analyzed using liquid chromatography/mass spectrometry (LC/MS) and ultraviolet-visible (UV-Vis) spectroscopy. RESULTS After UV radiation exposure, the brilliant blue FCF base peak [M1 + NH4 ]+ (m/z calc. 766.194 found 766.194) decreased in the LC/MS chromatogram with a concomitant appearance of BB-FCF decomposition products involving the sequential loss of the N-ethyl and N-methylbenzene sulfonate (MBSA) groups, assigned as [M2 + H]+ (-MBSA, calc. 579.163 found 579.162), [M3 + H]+ (-MBSA, -Et, calc. 551.131 found 551.131), [M4 + H]+ (-2MBSA, calc. 409.158 found 409.158), [M5 + H]+ (-2MBSA, -Et, calc. 381.127 found 381.127). Ions [M2 + H]+ and [M3 + H]+ were also identified in the photodegradation products using MALDI-MS. Observation by UV-Vis indicated a decrease in the solution absorbance maxima and an associated blue-shift upon UV exposure in solution. CONCLUSIONS The LC/MS analysis indicated two main oxidation processes. The most obvious was attack of the N-methylene, eliminating either ethyl or MBSA groups. The presence of the hydroxylated decomposition product M13 ([M13 + H]+ , calc. 595.157 found 595.157) supported this assignment. In addition, the detection of photoproduct M8, proposed to be 3-((ethylamino)methyl)benzenesulfonic acid ([M8 + H]+ , calc. 216.069 found 216.069), indicates an aryl-oxidative elimination. The absence of the aryl-hydroxy products normally expected to accompany the formation of M8 is proposed to be due to TiO2 -binding catechol-like derivatives, which are then removed upon filtration.
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Affiliation(s)
- Parisa S Khiabani
- School of Chemistry, The University of New South Wales, Sydney, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, Australia
| | - Alexander H Soeriyadi
- School of Chemistry, The University of New South Wales, Sydney, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, Australia
| | - Ekaterina V Nam
- School of Chemistry, The University of New South Wales, Sydney, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, Australia
| | - Joshua R Peterson
- School of Chemistry, The University of New South Wales, Sydney, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, Australia
| | - James E A Webb
- School of Chemistry, The University of New South Wales, Sydney, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, Australia
| | - Pall Thordarson
- School of Chemistry, The University of New South Wales, Sydney, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, Australia
| | - William A Donald
- School of Chemistry, The University of New South Wales, Sydney, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, Australia
| | - J Justin Gooding
- School of Chemistry, The University of New South Wales, Sydney, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, Australia
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40
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41
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Wong CK, Martin AD, Floetenmeyer M, Parton RG, Stenzel MH, Thordarson P. Faceted polymersomes: a sphere-to-polyhedron shape transformation. Chem Sci 2019; 10:2725-2731. [PMID: 30996990 PMCID: PMC6419931 DOI: 10.1039/c8sc04206c] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 09/21/2018] [Accepted: 01/09/2019] [Indexed: 12/22/2022] Open
Abstract
The creation of "soft" deformable hollow polymeric nanoparticles with complex non-spherical shapes via block copolymer self-assembly remains a challenge. In this work, we show that a perylene-bearing block copolymer can self-assemble into polymeric membrane sacs (polymersomes) that not only possess uncommonly faceted polyhedral shapes but are also intrinsically fluorescent. Here, we further reveal for the first time an experimental visualization of the entire polymersome faceting process. We uncover how our polymersomes facet through a sphere-to-polyhedron shape transformation pathway that is driven by perylene aggregation confined within a topologically spherical polymersome shell. Finally, we illustrate the importance in understanding this shape transformation process by demonstrating our ability to controllably isolate different intermediate polymersome morphologies. The findings presented herein should provide opportunities for those who utilize non-spherical polymersomes for drug delivery, nanoreactor or templating applications, and those who are interested in the fundamental aspects of polymersome self-assembly.
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Affiliation(s)
- Chin Ken Wong
- School of Chemistry , University of New South Wales , NSW 2052 , Australia . ;
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Australia
- Centre for Advanced Macromolecular Design (CAMD) , School of Chemistry , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Adam D Martin
- School of Chemistry , University of New South Wales , NSW 2052 , Australia . ;
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Australia
| | - Matthias Floetenmeyer
- Centre for Microscopy and Microanalysis , The University of Queensland , St. Lucia , Brisbane , QLD 4072 , Australia
| | - Robert G Parton
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Australia
- Centre for Microscopy and Microanalysis , The University of Queensland , St. Lucia , Brisbane , QLD 4072 , Australia
- Institute of Molecular Bioscience , The University of Queensland , St. Lucia , Brisbane , QLD 4072 , Australia
| | - Martina H Stenzel
- School of Chemistry , University of New South Wales , NSW 2052 , Australia . ;
- Centre for Advanced Macromolecular Design (CAMD) , School of Chemistry , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Pall Thordarson
- School of Chemistry , University of New South Wales , NSW 2052 , Australia . ;
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Australia
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42
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Farahani AD, Martin AD, Iranmanesh H, Bhadbhade MM, Beves JE, Thordarson P. Gel- and Solid-State-Structure of Dialanine and Diphenylalanine Amphiphiles: Importance of C⋅⋅⋅H Interactions in Gelation. Chemphyschem 2019; 20:972-983. [PMID: 30784156 DOI: 10.1002/cphc.201801104] [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] [Received: 02/26/2019] [Revised: 02/13/2019] [Indexed: 12/26/2022]
Abstract
To investigate the role of the capping group in the solution and solid-state self-assembly of short peptide amphiphiles, dialanine and diphenylalanine have been linked via the N-terminus to a benzene (phenyl) and 3-naphthyl capping groups using three different methylene linkers; (CH2 )n , n=0-4 for the benezene and 0, 1 and 2 for the naphthalene capping group. Atomic force microscopy (AFM), oscillatory rheology, circular dichroism (CD), and IR analysis have been employed to understand the properties of these peptide-based hydrogels. Several X-ray structures of these short peptide gelators give useful conformational information regarding packing. A comparison of these solid state structures with their gel state properties yielded greater insights into the process of self-assembly in short peptide gelators, particularly in terms of the important role of C⋅⋅⋅H interactions appear to play in determining if a short aromatic peptide does form a gel or not.
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Affiliation(s)
- Abbas D Farahani
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.,The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, NSW 2052, Australia
| | - Adam D Martin
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.,The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, NSW 2052, Australia
| | - Hasti Iranmanesh
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Mohan M Bhadbhade
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jonathon E Beves
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Pall Thordarson
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.,The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, NSW 2052, Australia
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Affiliation(s)
- Kristel C. Tjandra
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Pall Thordarson
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, New South Wales 2052, Australia
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Abstract
This tutorial review summarizes recent efforts over the past decade to study the morphological transformation of conventionally spherical polymersomes into non-spherical polymersomes.
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Affiliation(s)
- Chin Ken Wong
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
| | - Martina H. Stenzel
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
- Centre for Advanced Macromolecular Design (CAMD)
| | - Pall Thordarson
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
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45
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Aulsebrook ML, Starck M, Grace MR, Graham B, Thordarson P, Pal R, Tuck KL. Interaction of Nucleotides with a Trinuclear Terbium(III)-Dizinc(II) Complex: Efficient Sensitization of Terbium Luminescence by Guanosine Monophosphate and Application to Real-Time Monitoring of Phosphodiesterase Activity. Inorg Chem 2018; 58:495-505. [PMID: 30561998 DOI: 10.1021/acs.inorgchem.8b02731] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An in-depth study of the interaction of a trinuclear terbium(III)-dizinc(II) complex with an array of nucleotides differing in the type of nucleobase and number of phosphate groups, as well as cyclic versus acyclic variants, is presented. The study examined the nature of the interaction and the efficiency at which guanine was able to sensitize terbium(III) luminescence. Competitive binding and titration studies were performed to help establish the nature/mode of the interactions. These established that (1) interaction occurs by the coordination of phosphate groups to zinc(II) (in addition to uridine in the case of uridine monophosphate), (2) acyclic nucleotides bind more strongly than cyclic counterparts because of their higher negative charge, (3) guanine-containing nucleotides are able to sensitize terbium(III) luminescence with the efficiency of sensitization following the order guanosine monophosphate (GMP) > guanosine diphosphate > guanosine triphosphate because of the mode of binding, and (4) nucleoside monophosphates bind to a single zinc(II) ion, whereas di- and triphosphates appear to bind in a bridging mode between two host molecules. Furthermore, it has been shown that guanine is a sensitizer of terbium(III) luminescence. On the basis of the ability of GMP to effectively sensitize terbium(III)-based luminescence while cyclic GMP (cGMP) does not, the complex has been utilized to monitor the catalytic conversion of cGMP to GMP by a phosphodiesterase enzyme in real time using time-gated luminescence on a benchtop fluorimeter. The complex has the potential to find broad application in monitoring the activity of enzymes that process nucleotides (co)substrates, including high-throughput drug-screening programs.
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Affiliation(s)
| | - Matthieu Starck
- Department of Chemistry , Durham University , Durham DH1 3LE , U.K
| | - Michael R Grace
- School of Chemistry , Monash University , Clayton , Victoria 3800 , Australia
| | - Bim Graham
- Monash Institute of Pharmaceutical Sciences , Monash University , Parkville , Victoria 3052 , Australia
| | - Pall Thordarson
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - Robert Pal
- Department of Chemistry , Durham University , Durham DH1 3LE , U.K
| | - Kellie L Tuck
- School of Chemistry , Monash University , Clayton , Victoria 3800 , Australia
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46
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Wu YN, Shieh DB, Yang LX, Sheu HS, Zheng R, Thordarson P, Chen DH, Braet F. Characterization of Iron Core⁻Gold Shell Nanoparticles for Anti-Cancer Treatments: Chemical and Structural Transformations During Storage and Use. Materials (Basel) 2018; 11:ma11122572. [PMID: 30563014 PMCID: PMC6316008 DOI: 10.3390/ma11122572] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/10/2018] [Accepted: 12/12/2018] [Indexed: 12/22/2022]
Abstract
Finding a cancer-selective drug that avoids damaging healthy cells and organs is a holy grail in medical research. In our previous studies, gold-coated iron (Fe@Au) nanoparticles showed cancer selective anti-cancer properties in vitro and in vivo but were found to gradually lose that activity with storage or "ageing." To determine the reasons for this diminished anti-cancer activity, we examined Fe@Au nanoparticles at different preparation and storage stages by means of transmission electron microscopy combined with and energy-dispersive X-ray spectroscopy, along with X-ray diffraction analysis and cell viability tests. We found that dried and reconstituted Fe@Au nanoparticles, or Fe@Au nanoparticles within cells, decompose into irregular fragments of γ-F₂O₃ and agglomerated gold clumps. These changes cause the loss of the particles' anti-cancer effects. However, we identified that the anti-cancer properties of Fe@Au nanoparticles can be well preserved under argon or, better still, liquid nitrogen storage for six months and at least one year, respectively.
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Affiliation(s)
- Ya-Na Wu
- Institute of Oral Medicine and Department of Stomatology, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, 70101, Taiwan. ;
- Institute of Biological Chemistry, Academia Sinica, Taipei, 11529, Taiwan
| | - Dar-Bin Shieh
- Institute of Oral Medicine and Department of Stomatology, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, 70101, Taiwan. ;
- Center for Micro/Nano Science and Technology, Advanced Optoelectronic Technology Center, Innovation Center for Advanced Medical Device Technology, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Li-Xing Yang
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, 70101, Taiwan.
| | - Hwo-Shuenn Sheu
- National Synchrotron Radiation Research Center, Hsinchu Science-Based Industrial Park, Hsinchu 30076, Taiwan.
| | - Rongkun Zheng
- Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, NSW 2006, Australia.
| | - Pall Thordarson
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia.
| | - Dong-Hwang Chen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Filip Braet
- Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, NSW 2006, Australia.
- School of Medical Sciences-The Bosch Institute, The University of Sydney, NSW 2006, Australia.
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47
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Tómasson DA, Ghosh D, Kržišnik Z, Fasolin LH, Vicente AA, Martin AD, Thordarson P, Damodaran KK. Enhanced Mechanical and Thermal Strength in Mixed-Enantiomers-Based Supramolecular Gel. Langmuir 2018; 34:12957-12967. [PMID: 30272986 DOI: 10.1021/acs.langmuir.8b02729] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Mixing supramolecular gels based on enantiomers leads to re-arrangement of gel fibers at the molecular level, which results in more favorable packing and tunable properties. Bis(urea) compounds tagged with a phenylalanine methyl ester in racemic and enantiopure forms were synthesized. Both enantiopure and racemate compounds formed gels in a wide range of solvents and the racemate (1-rac) formed a stronger gel network compared with the enantiomers. The gel (1R+1S) obtained by mixing equimolar amount of enantiomers (1R and 1S) showed enhanced mechanical and thermal stability compared to enantiomers and racemate gels. The preservation of chirality in these compounds was analyzed by circular dichroism and optical rotation measurements. Analysis of the scanning electron microscopy (SEM) and atomic force microscopy (AFM) images revealed that the network in the mixed gel is a combination of enantiomers and racemate fibers, which was further supported by solid-state NMR. The analysis of the packing in xerogels by solid-state NMR spectra and the existence of twisted-tape morphology in SEM and AFM images confirmed the presence of both self-sorted and co-assembled fibers in mixed gel. The enhanced thermal and mechanical strength may be attributed to the enhanced intermolecular forces between the racemate and the enantiomer and the combination of both self-sorted and co-assembled enantiomers in the mixed gel.
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Affiliation(s)
- Daníel Arnar Tómasson
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Dipankar Ghosh
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Zala Kržišnik
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Luiz Henrique Fasolin
- Centre of Biological Engineering , University of Minho , Campus de Gualtar , 4710-057 Braga , Portugal
| | - António A Vicente
- Centre of Biological Engineering , University of Minho , Campus de Gualtar , 4710-057 Braga , Portugal
| | - Adam D Martin
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of New South Wales , Sydney 2052 , Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of New South Wales , Sydney 2052 , Australia
| | - Krishna K Damodaran
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
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48
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Faria M, Björnmalm M, Thurecht KJ, Kent SJ, Parton RG, Kavallaris M, Johnston APR, Gooding JJ, Corrie SR, Boyd BJ, Thordarson P, Whittaker AK, Stevens MM, Prestidge CA, Porter CJH, Parak WJ, Davis TP, Crampin EJ, Caruso F. Minimum information reporting in bio-nano experimental literature. Nat Nanotechnol 2018; 13:777-785. [PMID: 30190620 PMCID: PMC6150419 DOI: 10.1038/s41565-018-0246-4] [Citation(s) in RCA: 358] [Impact Index Per Article: 59.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 07/24/2018] [Indexed: 04/14/2023]
Abstract
Studying the interactions between nanoengineered materials and biological systems plays a vital role in the development of biological applications of nanotechnology and the improvement of our fundamental understanding of the bio-nano interface. A significant barrier to progress in this multidisciplinary area is the variability of published literature with regards to characterizations performed and experimental details reported. Here, we suggest a 'minimum information standard' for experimental literature investigating bio-nano interactions. This standard consists of specific components to be reported, divided into three categories: material characterization, biological characterization and details of experimental protocols. Our intention is for these proposed standards to improve reproducibility, increase quantitative comparisons of bio-nano materials, and facilitate meta analyses and in silico modelling.
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Affiliation(s)
- Matthew Faria
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, Australia
- Systems Biology Laboratory, School of Mathematics and Statistics and Melbourne School of Engineering, The University of Melbourne, Parkville, Victoria, Australia
| | - Mattias Björnmalm
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, Australia
- Department of Materials, Imperial College London, London, UK
- Department of Bioengineering, and Institute of Biomedical Engineering, Imperial College London, London, UK
| | - Kristofer J Thurecht
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- The Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, Australia
- Centre for Advanced Imaging, The University of Queensland, Brisbane, Queensland, Australia
| | - Stephen J Kent
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville, Victoria, Australia
| | - Robert G Parton
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia
- Centre for Microscopy and Microanalysis, University of Queensland, Brisbane, Queensland, Australia
| | - Maria Kavallaris
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Tumour Biology and Targeting Program, Children's Cancer Institute, Lowy Cancer Research Centre, The University of New South Wales, Sydney, New South Wales, Australia
- School of Chemistry, Australian Centre for NanoMedicine, The University of New South Wales, Sydney, New South Wales, Australia
| | - Angus P R Johnston
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Drug Delivery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Victoria, Australia
| | - J Justin Gooding
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- School of Chemistry, Australian Centre for NanoMedicine, The University of New South Wales, Sydney, New South Wales, Australia
| | - Simon R Corrie
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- The Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, Australia
- Department of Chemical Engineering, Monash University, Clayton, Victoria, Australia
| | - Ben J Boyd
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Drug Delivery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Victoria, Australia
| | - Pall Thordarson
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- School of Chemistry, Australian Centre for NanoMedicine, The University of New South Wales, Sydney, New South Wales, Australia
| | - Andrew K Whittaker
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- The Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, Australia
| | - Molly M Stevens
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Department of Materials, Imperial College London, London, UK
- Department of Bioengineering, and Institute of Biomedical Engineering, Imperial College London, London, UK
| | - Clive A Prestidge
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- School of Pharmacy and Medical Science, The University of South Australia, Adelaide, South Australia, Australia
| | - Christopher J H Porter
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Drug Delivery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Victoria, Australia
| | - Wolfgang J Parak
- Fachbereich Physik und Chemie, CHyN, Universität Hamburg, Hamburg, Germany
- Institute of Nano Biomedicine and Engineering, Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Thomas P Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia
- Drug Delivery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Victoria, Australia
- Department of Chemistry, University of Warwick, Coventry, UK
| | - Edmund J Crampin
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia, .
- Systems Biology Laboratory, School of Mathematics and Statistics and Melbourne School of Engineering, The University of Melbourne, Parkville, Victoria, Australia.
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australia, .
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, Australia.
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49
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Martin AD, Chua SW, Au CG, Stefen H, Przybyla M, Lin Y, Bertz J, Thordarson P, Fath T, Ke YD, Ittner LM. Peptide Nanofiber Substrates for Long-Term Culturing of Primary Neurons. ACS Appl Mater Interfaces 2018; 10:25127-25134. [PMID: 29979564 DOI: 10.1021/acsami.8b07560] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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 culturing of primary neurons represents a central pillar of neuroscience research. Primary neurons are derived directly from brain tissue and recapitulate key aspects of neuronal development in an in vitro setting. Unlike neural stem cells, primary neurons do not divide; thus, initial attachment of cells to a suitable substrate is critical. Commonly used polylysine substrates can suffer from batch variability owing to their polymeric nature. Herein, we report the use of chemically well-defined, self-assembling tetrapeptides as substrates for primary neuronal culture. These water-soluble peptides assemble into fibers which facilitate adhesion and development of primary neurons, their long-term survival (>40 days), synaptic maturation, and electrical activity. Furthermore, these substrates are permissive toward neuronal transfection and transduction which, coupled with their uniformity and reproducible nature, make them suitable for a wide variety of applications in neuroscience.
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Affiliation(s)
- Adam D Martin
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology , University of New South Wales , Sydney , NSW , 2052 , Australia
| | - Sook Wern Chua
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Carol G Au
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Holly Stefen
- Neurodegeneration and Repair Unit, School of Medical Sciences and Neuronal Culture Core Facility , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Magdalena Przybyla
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Yijun Lin
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Josefine Bertz
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology , University of New South Wales , Sydney , NSW , 2052 , Australia
| | - Thomas Fath
- Neurodegeneration and Repair Unit, School of Medical Sciences and Neuronal Culture Core Facility , University of New South Wales , Sydney , NSW 2052 , Australia
- Dementia Research Centre, Faculty of Medicine and Health Sciences , Macquarie University , Sydney , NSW 2109 , Australia
| | - Yazi D Ke
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Lars M Ittner
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
- Dementia Research Centre, Faculty of Medicine and Health Sciences , Macquarie University , Sydney , NSW 2109 , Australia
- Neuroscience Research Australia , Sydney , NSW 2031 , Australia
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50
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Tan S, Healey R, Thordarson P, Finch A. Investigating the Impact of Altered Subunit Expression on Sweet Taste Receptor Surface Trafficking and Signaling. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.685.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Susan Tan
- School of Medical SciencesUNSW SydneySydneyAustralia
- School of ChemistryUNSW SydneySydneyAustralia
| | - Robert Healey
- School of Medical SciencesUNSW SydneySydneyAustralia
- School of ChemistryUNSW SydneySydneyAustralia
| | | | - Angela Finch
- School of Medical SciencesUNSW SydneySydneyAustralia
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