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Sulheim E, WiderØe M, Bäck M, Nilsson KPR, Hammarström P, Nilsson LN, Davies CDL, Åslund AK. Contrast Enhanced Magnetic Resonance Imaging of Amyloid-β Plaques in a Murine Alzheimer’s Disease Model. J Alzheimers Dis 2023; 93:411-419. [PMID: 37038807 DOI: 10.3233/jad-220198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Background: Early detection of amyloid-β (Aβ) aggregates is a critical step to improve the treatment of Alzheimer’s disease (AD) because neuronal damage by the Aβ aggregates occurs before clinical symptoms are apparent. We have previously shown that luminescent conjugated oligothiophenes (LCOs), which are highly specific towards protein aggregates of Aβ, can be used to fluorescently label amyloid plaque in living rodents. Objective: We hypothesize that the LCO can be used to target gadolinium to the amyloid plaque and hence make the plaque detectable by T1-weighted magnetic resonance imaging (MRI). Methods: A novel LCO-gadolinium construct was synthesized to selectively bind to Aβ plaques and give contrast in conventional T1-weighted MR images after intravenous injection in Tg-APPSwe mice. Results: We found that mice with high plaque-burden could be identified using the LCO-Gd constructs by conventional MRI. Conclusion: Our study shows that MR imaging of amyloid plaques is challenging but feasible, and hence contrast-mediated MR imaging could be a valuable tool for early AD detection.
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Affiliation(s)
- Einar Sulheim
- Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Biotechnology and Nanomedicine, SINTEF AS, Trondheim, Norway
| | - Marius WiderØe
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Marcus Bäck
- Department of Physics, Chemistry and Biology, Division of Chemistry, Linköping University, Linköping, Sweden
| | - K. Peter R. Nilsson
- Department of Physics, Chemistry and Biology, Division of Chemistry, Linköping University, Linköping, Sweden
| | - Per Hammarström
- Department of Physics, Chemistry and Biology, Division of Chemistry, Linköping University, Linköping, Sweden
| | - Lars N.G. Nilsson
- Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | | | - Andreas K.O. Åslund
- Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Biotechnology and Nanomedicine, SINTEF AS, Trondheim, Norway
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Arja K, Selegård R, Paloncýová M, Linares M, Lindgren M, Norman P, Aili D, Nilsson KPR. Self-Assembly of Chiro-Optical Materials from Nonchiral Oligothiophene-Porphyrin Derivatives and Random Coil Synthetic Peptides. Chempluschem 2023; 88:e202200262. [PMID: 36173143 DOI: 10.1002/cplu.202200262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/01/2022] [Indexed: 01/04/2023]
Abstract
Biomimetic chiral optoelectronic materials can be utilized in electronic devices, biosensors and artificial enzymes. Herein, this work reports the chiro-optical properties and architectural arrangement of optoelectronic materials generated from self-assembly of initially nonchiral oligothiophene-porphyrin derivatives and random coil synthetic peptides. The photo-physical- and structural properties of the materials were assessed by absorption-, fluorescence- and circular dichroism spectroscopy, as well as dynamic light scattering, scanning electron microscopy and theoretical calculations. The materials display a three-dimensional ordered helical structure and optical activity that are observed due to an induced chirality of the optoelectronic element upon interaction with the peptide. Both these properties are influenced by the chemical composition of the oligothiophene-porphyrin derivative, as well as the peptide sequence. We foresee that our findings will aid in developing self-assembled optoelectronic materials with dynamic architectonical accuracies, as well as offer the possibility to generate the next generation of materials for a variety of bioelectronic applications.
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Affiliation(s)
- Katriann Arja
- Division of Chemistry Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
| | - Robert Selegård
- Laboratory of Molecular Materials Division of Biophysics and Bioengineering Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
| | - Markéta Paloncýová
- Division of Theoretical Chemistry and Biology School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, 106 91, Stockholm, Sweden
- Regional Centre of Advanced Technologies and Materials Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 779 00, Olomouc, Czech Republic
| | - Mathieu Linares
- Laboratory of Organic Electronics and Group of Scientific Visualization Department of Science and Technology (ITN), Linköping University, 601 74, Norrköping, Sweden
| | - Mikael Lindgren
- Department of Physics, Norwegian University of Science and Technology, 7491, Trondheim, Norway
| | - Patrick Norman
- Division of Theoretical Chemistry and Biology School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, 106 91, Stockholm, Sweden
| | - Daniel Aili
- Laboratory of Molecular Materials Division of Biophysics and Bioengineering Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
| | - K Peter R Nilsson
- Division of Chemistry Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
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Araújo ARL, Tomé AC, Santos CIM, Faustino MAF, Neves MGPMS, Simões MMQ, Moura NMM, Abu-Orabi ST, Cavaleiro JAS. Azides and Porphyrinoids: Synthetic Approaches and Applications. Part 1-Azides, Porphyrins and Corroles. Molecules 2020; 25:E1662. [PMID: 32260294 PMCID: PMC7181322 DOI: 10.3390/molecules25071662] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 12/12/2022] Open
Abstract
Azides and porphyrinoids (such as porphyrin and corrole macrocycles) can give rise to new derivatives with significant biological properties and as new materials' components. Significant synthetic approaches have been studied. A wide range of products (e.g., microporous organic networks, rotaxane and dendritic motifs, dendrimers as liquid crystals, as blood substitutes for transfusions and many others) can now be available and used for several medicinal and industrial purposes.
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Affiliation(s)
- Ana R. L. Araújo
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.L.A.); (A.C.T.); (C.I.M.S.); (M.A.F.F.); (M.G.P.M.S.N.); (M.M.Q.S.)
| | - Augusto C. Tomé
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.L.A.); (A.C.T.); (C.I.M.S.); (M.A.F.F.); (M.G.P.M.S.N.); (M.M.Q.S.)
| | - Carla I. M. Santos
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.L.A.); (A.C.T.); (C.I.M.S.); (M.A.F.F.); (M.G.P.M.S.N.); (M.M.Q.S.)
- CQE, Centro de Química Estrutural and IN-Institute of Nanoscience and Nanotechnology of Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Maria A. F. Faustino
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.L.A.); (A.C.T.); (C.I.M.S.); (M.A.F.F.); (M.G.P.M.S.N.); (M.M.Q.S.)
| | - Maria G. P. M. S. Neves
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.L.A.); (A.C.T.); (C.I.M.S.); (M.A.F.F.); (M.G.P.M.S.N.); (M.M.Q.S.)
| | - Mário M. Q. Simões
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.L.A.); (A.C.T.); (C.I.M.S.); (M.A.F.F.); (M.G.P.M.S.N.); (M.M.Q.S.)
| | - Nuno M. M. Moura
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.L.A.); (A.C.T.); (C.I.M.S.); (M.A.F.F.); (M.G.P.M.S.N.); (M.M.Q.S.)
| | | | - José A. S. Cavaleiro
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.L.A.); (A.C.T.); (C.I.M.S.); (M.A.F.F.); (M.G.P.M.S.N.); (M.M.Q.S.)
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Lu J, Liu S, Wang M. Push-Pull Zinc Porphyrins as Light-Harvesters for Efficient Dye-Sensitized Solar Cells. Front Chem 2018; 6:541. [PMID: 30519554 PMCID: PMC6251255 DOI: 10.3389/fchem.2018.00541] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 10/18/2018] [Indexed: 02/03/2023] Open
Abstract
Dye-sensitized solar cell (DSSC) has been attractive to scientific community due to its eco-friendliness, ease of fabrication, and vivid colorful property etc. Among various kinds of sensitizers, such as metal-free organic molecules, metal-complex, natural dyes etc., porphyrin is one of the most promising sensitizers for DSSC. The first application of porphyrin for sensitization of nanocrystaline TiO2 can be traced back to 1993 by using [tetrakis(4-carboxyphenyl) porphyrinato] zinc(II) with an overall conversion efficiency of 2.6%. After 10 years efforts, Officer and Grätzel improved this value to 7.1%. Later in 2009, by constructing porphyrin sensitizer with an arylamine as donor and a benzoic acid as acceptor, Diau and Yeh demonstrated that this donor-acceptor framwork porphyrins could attain remarkable photovoltaic performance. Now the highest efficiencies of DSSC are dominated by donor-acceptor porphyrins, reaching remarkable values around 13.0% with cobalt-based electrolytes. This achievement is largely contributed by the structural development of donor and acceptor groups within push-pull framwork. In this review, we summarized and discussed the developement of donor-acceptor porphyrin sensitizers and their applications in DSSC. A dicussion of the correlation between molecular structure and the spectral and photovoltaic properties is the major target of this review. Deeply dicussion of the substitution group, especially on porphyrin's meso-position were presented. Furthermore, the limitations of DSSC for commercialization, such as the long-term stability, sophisticated synthesis procedures for high efficiency dye etc., have also been discussed.
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Affiliation(s)
- Jianfeng Lu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
- School of Chemistry, Monash University, Melbourne, VIC, Australia
| | - Shuangshuang Liu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
| | - Mingkui Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
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