1
|
Lendel C, Solin N. Protein nanofibrils and their use as building blocks of sustainable materials. RSC Adv 2021; 11:39188-39215. [PMID: 35492452 PMCID: PMC9044473 DOI: 10.1039/d1ra06878d] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/25/2021] [Indexed: 12/21/2022] Open
Abstract
The development towards a sustainable society requires a radical change of many of the materials we currently use. Besides the replacement of plastics, derived from petrochemical sources, with renewable alternatives, we will also need functional materials for applications in areas ranging from green energy and environmental remediation to smart foods. Proteins could, with their intriguing ability of self-assembly into various forms, play important roles in all these fields. To achieve that, the code for how to assemble hierarchically ordered structures similar to the protein materials found in nature must be cracked. During the last decade it has been demonstrated that amyloid-like protein nanofibrils (PNFs) could be a steppingstone for this task. PNFs are formed by self-assembly in water from a range of proteins, including plant resources and industrial side streams. The nanofibrils display distinct functional features and can be further assembled into larger structures. PNFs thus provide a framework for creating ordered, functional structures from the atomic level up to the macroscale. This review address how industrial scale protein resources could be transformed into PNFs and further assembled into materials with specific mechanical and functional properties. We describe what is required from a protein to form PNFs and how the structural properties at different length scales determine the material properties. We also discuss potential chemical routes to modify the properties of the fibrils and to assemble them into macroscopic structures.
Collapse
Affiliation(s)
- Christofer Lendel
- Department of Chemistry, KTH Royal Institute of Technology Teknikringen 30 SE-100 44 Stockholm Sweden
| | - Niclas Solin
- Department of Physics, Chemistry, and Biology, Electronic and Photonic Materials, Biomolecular and Organic Electronics, Linköping University Linköping 581 83 Sweden
| |
Collapse
|
2
|
Affiliation(s)
- Brian A. Collins
- Physics and Astronomy Washington State University Pullman Washington USA
| | - Eliot Gann
- Material Measurement Laboratory National Institute of Standards and Technology Gaithersburg Maryland USA
| |
Collapse
|
3
|
Ye X, Capezza AJ, Xiao X, Lendel C, Hedenqvist MS, Kessler VG, Olsson RT. Protein Nanofibrils and Their Hydrogel Formation with Metal Ions. ACS NANO 2021; 15:5341-5354. [PMID: 33666436 PMCID: PMC8041371 DOI: 10.1021/acsnano.0c10893] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Protein nanofibrils (PNFs) have been prepared by whey protein fibrillation at low pH and in the presence of different metal ions. The effect of the metal ions was systematically studied both in terms of PNF suspension gelation behavior and fibrillation kinetics. A high valence state and a small ionic radius (e.g., Sn4+) of the metal ion resulted in the formation of hydrogels already at a metal ion concentration of 30 mM, whereas an intermediate valence state and larger ionic radius (Co2+, Ni2+, Al3+) resulted in the hydrogel formation occurring at 60 mM. A concentration of 120 mM of Na+ was needed to form a PNF hydrogel, while lower concentrations showed liquid behaviors similar to the reference PNF solution where no metal ions had been introduced. The hydrogel mechanics were investigated at steady-state conditions after 24 h of incubation/gelation, revealing that more acidic (smaller and more charged) metal ions induced ca. 2 orders of magnitude higher storage modulus as compared to the less acidic metal ions (with smaller charge and larger radius) for the same concentration of metal ions. The viscoelastic nature of the hydrogels was attributed to the ability of the metal ions to coordinate water molecules in the vicinity of the PNFs. The presence of metal ions in the solutions during the growth of the PNFs typically resulted in curved fibrils, whereas an upper limit of the concentration existed when oxides/hydroxides were formed, and the hydrogels lost their gel properties due to phase separation. Thioflavin T (ThT) fluorescence was used to determine the rate of the fibrillation to form 50% of the total PNFs (t1/2), which decreased from 2.3 to ca. 0.5 h depending on the specific metal ions added.
Collapse
Affiliation(s)
- Xinchen Ye
- Department
of Fibre and Polymer Technology, School of Engineering Sciences in
Chemistry, Biotechnology and Health, KTH
Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Antonio J. Capezza
- Department
of Fibre and Polymer Technology, School of Engineering Sciences in
Chemistry, Biotechnology and Health, KTH
Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Xiong Xiao
- Department
of Fibre and Polymer Technology, School of Engineering Sciences in
Chemistry, Biotechnology and Health, KTH
Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Christofer Lendel
- Department
of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology,
and Health, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden
| | - Mikael S. Hedenqvist
- Department
of Fibre and Polymer Technology, School of Engineering Sciences in
Chemistry, Biotechnology and Health, KTH
Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Vadim G. Kessler
- Department
of Molecular Sciences, Swedish University
of Agricultural Sciences, Box 7015, 750 07 Uppsala, Sweden
| | - Richard T. Olsson
- Department
of Fibre and Polymer Technology, School of Engineering Sciences in
Chemistry, Biotechnology and Health, KTH
Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| |
Collapse
|
4
|
Cui C, Park DH, Ahn DJ. Organic Semiconductor-DNA Hybrid Assemblies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002213. [PMID: 33035387 DOI: 10.1002/adma.202002213] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/26/2020] [Indexed: 06/11/2023]
Abstract
Organic semiconductors are photonic and electronic materials with high luminescence, quantum efficiency, color tunability, and size-dependent optoelectronic properties. The self-assembly of organic molecules enables the establishment of a fabrication technique for organic micro- and nano-architectures with well-defined shapes, tunable sizes, and defect-free structures. DNAs, a class of biomacromolecules, have recently been used as an engineering material capable of intricate nanoscale structuring while simultaneously storing biological genetic information. Here, the up-to-date research on hybrid materials made from organic semiconductors and DNAs is presented. The trends in photonic and electronic phenomena discovered in DNA-functionalized and DNA-driven organic semiconductor hybrids, comprising small molecules and polymers, are observed. Various hybrid forms of solutions, arrayed chips, nanowires, and crystalline particles are discussed, focusing on the role of DNA in the hybrids. Furthermore, the recent technical advances achieved in the integration of DNAs in light-emitting devices, transistors, waveguides, sensors, and biological assays are presented. DNAs not only serve as a recognizing element in organic-semiconductor-based sensors, but also as an active charge-control material in high-performance optoelectronic devices.
Collapse
Affiliation(s)
- Chunzhi Cui
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji, 133002, China
| | - Dong Hyuk Park
- Department of Chemical Engineering, Inha University, Incheon, 22212, Korea
| | - Dong June Ahn
- KU-KIST Graduate School of Converging Science and Technology and Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, Korea
| |
Collapse
|
5
|
Ke PC, Zhou R, Serpell LC, Riek R, Knowles TPJ, Lashuel HA, Gazit E, Hamley IW, Davis TP, Fändrich M, Otzen DE, Chapman MR, Dobson CM, Eisenberg DS, Mezzenga R. Half a century of amyloids: past, present and future. Chem Soc Rev 2020; 49:5473-5509. [PMID: 32632432 PMCID: PMC7445747 DOI: 10.1039/c9cs00199a] [Citation(s) in RCA: 304] [Impact Index Per Article: 76.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Amyloid diseases are global epidemics with profound health, social and economic implications and yet remain without a cure. This dire situation calls for research into the origin and pathological manifestations of amyloidosis to stimulate continued development of new therapeutics. In basic science and engineering, the cross-β architecture has been a constant thread underlying the structural characteristics of pathological and functional amyloids, and realizing that amyloid structures can be both pathological and functional in nature has fuelled innovations in artificial amyloids, whose use today ranges from water purification to 3D printing. At the conclusion of a half century since Eanes and Glenner's seminal study of amyloids in humans, this review commemorates the occasion by documenting the major milestones in amyloid research to date, from the perspectives of structural biology, biophysics, medicine, microbiology, engineering and nanotechnology. We also discuss new challenges and opportunities to drive this interdisciplinary field moving forward.
Collapse
Affiliation(s)
- Pu Chun Ke
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Zhongshan Hospital, Fudan University, 111 Yixueyuan Rd, Xuhui District, Shanghai, China
| | - Ruhong Zhou
- Institute of Quantitative Biology, Zhejiang University, Hangzhou 310058, China; Department of Chemistry, Columbia University, New York, New York, 10027, USA
| | - Louise C. Serpell
- School of Life Sciences, University of Sussex, Falmer, East Sussex BN1 9QG, UK
| | - Roland Riek
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Wolfgang-Pauli-Str. 10, 8093 Zurich, Switzerland
| | - Tuomas P. J. Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, CB3 0HE, Cambridge, UK
| | - Hilal A. Lashuel
- Laboratory of Molecular Neurobiology and Neuroproteomics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences; Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, 69978 Tel Aviv, Israel
| | - Ian W. Hamley
- School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Whiteknights, Reading RG6 6AD, UK
| | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
| | - Marcus Fändrich
- Institute of Protein Biochemistry, Ulm University, 89081, Ulm, Germany
| | - Daniel Erik Otzen
- Department of Molecular Biology, Center for Insoluble Protein Structures (inSPIN), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Matthew R. Chapman
- Department of Molecular, Cellular and Developmental Biology, Centre for Microbial Research, University of Michigan, Ann Arbor, MI 48109-1048, USA
| | - Christopher M. Dobson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - David S. Eisenberg
- Departments of Chemistry and Biochemistry and Biological Chemistry, UCLA-DOE Institute and Howard Hughes Medical Institute, UCLA, Los Angeles, CA, USA
| | - Raffaele Mezzenga
- Department of Health Science & Technology, ETH Zurich, Schmelzbergstrasse 9, LFO, E23, 8092 Zurich, Switzerland
- Department of Materials, ETH Zurich, Wolfgang Pauli Strasse 10, 8093 Zurich, Switzerland
| |
Collapse
|
6
|
Gorbenko G, Trusova V, Deligeorgiev T, Gadjev N, Mizuguchi C, Saito H. Two-step FRET as a tool for probing the amyloid state of proteins. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
7
|
|
8
|
Bäcklund FG, Elfwing A, Musumeci C, Ajjan F, Babenko V, Dzwolak W, Solin N, Inganäs O. Conducting microhelices from self-assembly of protein fibrils. SOFT MATTER 2017; 13:4412-4417. [PMID: 28590474 DOI: 10.1039/c7sm00068e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein we utilize insulin to prepare amyloid based chiral helices with either right or left handed helicity. We demonstrate that the helices can be utilized as structural templates for the conducting polymer alkoxysulfonate poly(ethylenedioxythiophene) (PEDOT-S). The chirality of the helical assembly is transferred to PEDOT-S as demonstrated by polarized optical microscopy (POM) and Circular Dichroism (CD). Analysis of the helices by conductive atomic force microscopy (c-AFM) shows significant conductivity. In addition, the morphology of the template structure is stabilized by PEDOT-S. These conductive helical structures represent promising candidates in our quest for THz resonators.
Collapse
Affiliation(s)
- Fredrik G Bäcklund
- Department of Physics, Chemistry, and Biology, Biomolecular and Organic Electronics, Linköping University, 581 83 Linköping, Sweden.
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Knowles TPJ, Mezzenga R. Amyloid Fibrils as Building Blocks for Natural and Artificial Functional Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:6546-61. [PMID: 27165397 DOI: 10.1002/adma.201505961] [Citation(s) in RCA: 347] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 03/15/2016] [Indexed: 05/20/2023]
Abstract
Proteinaceous materials based on the amyloid core structure have recently been discovered at the origin of biological functionality in a remarkably diverse set of roles, and attention is increasingly turning towards such structures as the basis of artificial self-assembling materials. These roles contrast markedly with the original picture of amyloid fibrils as inherently pathological structures. Here we outline the salient features of this class of functional materials, both in the context of the functional roles that have been revealed for amyloid fibrils in nature, as well as in relation to their potential as artificial materials. We discuss how amyloid materials exemplify the emergence of function from protein self-assembly at multiple length scales. We focus on the connections between mesoscale structure and material function, and demonstrate how the natural examples of functional amyloids illuminate the potential applications for future artificial protein based materials.
Collapse
Affiliation(s)
- Tuomas P J Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, United Kingdom
| | - Raffaele Mezzenga
- Department of Health Sciences and Technology, ETH Zurich, Switzerland
- Department of Materials Science, ETH Zurich, Switzerland
| |
Collapse
|
10
|
Chowdhury SR, Agarwal M, Meher N, Muthuraj B, Iyer PK. Modulation of Amyloid Aggregates into Nontoxic Coaggregates by Hydroxyquinoline Appended Polyfluorene. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13309-13319. [PMID: 27152771 DOI: 10.1021/acsami.6b03668] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Inhibitory modulation toward de novo protein aggregation is likely to be a vital and promising therapeutic strategy for understanding the molecular etiology of amyloid related diseases such as Alzheimer's disease (AD). The building up of toxic oligomeric and fibrillar amyloid aggregates in the brain plays host to a downstream of events, causing damage to axons, dendrites, synapses, signaling, transmission, and finally cell death. Herein, we introduce a novel conjugated polymer (CP), hydroxyquinoline appended polyfluorene (PF-HQ), which has a typical "amyloid like" surface motif and exhibits inhibitory modulation effect on amyloid β (Aβ) aggregation. We delineate inhibitory effects of PF-HQ based on Thioflavin T (ThT) fluorescence, atomic force microscopy (AFM), circular dichroism (CD), and Fourier transform infrared (FTIR) studies. The amyloid-like PF-HQ forms nano coaggregates by templating with toxic amyloid intermediates and displays improved inhibitory impacts toward Aβ fibrillation and diminishes amyloid cytotoxicity. We have developed a CP based modulation strategy for the first time, which demonstrates beneficiary amyloid-like surface motif to interact efficiently with the protein, the pendant side groups to trap the toxic amyloid intermediates as well as optical signal to acquire the mechanistic insight.
Collapse
Affiliation(s)
- Sayan Roy Chowdhury
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| | - Mahesh Agarwal
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| | - Niranjan Meher
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| | - Balakrishnan Muthuraj
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| |
Collapse
|
11
|
Meier C, Lifincev I, Welland ME. Conducting Core–Shell Nanowires by Amyloid Nanofiber Templated Polymerization. Biomacromolecules 2015; 16:558-63. [DOI: 10.1021/bm501618c] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Christoph Meier
- Nanoscience
Centre, Cambridge University, 11 JJ Thomson Avenue, Cambridge, CB3 0FF United Kingdom
| | | | - Mark E. Welland
- Nanoscience
Centre, Cambridge University, 11 JJ Thomson Avenue, Cambridge, CB3 0FF United Kingdom
| |
Collapse
|
12
|
Smith JE, Mowles AK, Mehta AK, Lynn DG. Looked at life from both sides now. Life (Basel) 2014; 4:887-902. [PMID: 25513758 PMCID: PMC4284472 DOI: 10.3390/life4040887] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 12/01/2014] [Accepted: 12/02/2014] [Indexed: 01/25/2023] Open
Abstract
As the molecular top–down causality emerging through comparative genomics is combined with the bottom–up dynamic chemical networks of biochemistry, the molecular symbiotic relationships driving growth of the tree of life becomes strikingly apparent. These symbioses can be mutualistic or parasitic across many levels, but most foundational is the complex and intricate mutualism of nucleic acids and proteins known as the central dogma of biological information flow. This unification of digital and analog molecular information within a common chemical network enables processing of the vast amounts of information necessary for cellular life. Here we consider the molecular information pathways of these dynamic biopolymer networks from the perspective of their evolution and use that perspective to inform and constrain pathways for the construction of mutualistic polymers.
Collapse
Affiliation(s)
- Jillian E Smith
- Department of Chemistry and Biology, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA.
| | - Allisandra K Mowles
- Department of Chemistry and Biology, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA.
| | - Anil K Mehta
- Department of Chemistry and Biology, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA.
| | - David G Lynn
- Department of Chemistry and Biology, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA.
| |
Collapse
|
13
|
Bhattacharyya S, Patra A. Interactions of π-conjugated polymers with inorganic nanocrystals. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2014. [DOI: 10.1016/j.jphotochemrev.2014.05.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
14
|
ATR-FTIR: A “rejuvenated” tool to investigate amyloid proteins. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2328-38. [DOI: 10.1016/j.bbamem.2013.04.012] [Citation(s) in RCA: 263] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 02/20/2013] [Accepted: 04/02/2013] [Indexed: 12/24/2022]
|
15
|
Tu D, Nilsson D, Forchheimer R. Electrochromic Electrochemical Transistors Gated With Polyelectrolyte-Decorated Amyloid Fibrils. ACTA ACUST UNITED AC 2013. [DOI: 10.1109/jdt.2013.2278015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
16
|
Abstract
The current landscape of nanotechnology is such that attention is being given to those materials that self-assemble, as a mode of "bottom-up" fabrication of nanomaterials. The field of nanotubes and nanowires has long been dominated by carbon nanotubes and inorganic materials. However in more recent years, the search for materials with desirable properties, such as self-assembly, has unsurprisingly led to the biological world, where functional nanoscale biomolecular assemblies are in abundance.Potential has been seen for a number of these assemblies to be translated into functional nanomaterials. The early days of bionanotechnology saw a lot of attention given to DNA molecules as nanowires, and proteins and peptides have now also been seen to have promise in this area. With most of the biological structures investigated having low conductivity in the native state, the use of biomolecules as templates for the formation of metallic and semiconductor nanowires has been the direction taken.This chapter will discuss the use of various biomolecules and biomolecular assemblies as nanowires, with a particular emphasis on proteins, beginning with an introduction into the field of nanotubes and nanowires. Many applications are now recognized for nanowires, but for brevity, this chapter will focus solely on their use as biosensors, using glucose sensors as a case study.
Collapse
Affiliation(s)
- Laura J Domigan
- Biomolecular Interaction Centre and School of Biological Sciences, MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Canterbury, Christchurch, New Zealand
| |
Collapse
|
17
|
O'Carroll DM, Petoukhoff CE, Kohl J, Yu B, Carter CM, Goodman S. Conjugated polymer-based photonic nanostructures. Polym Chem 2013. [DOI: 10.1039/c3py00198a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Solin N, Inganäs O. Protein Nanofibrils Balance Colours in Organic White-Light-Emitting Diodes. Isr J Chem 2012. [DOI: 10.1002/ijch.201100113] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
19
|
Domigan LJ, Healy JP, Meade SJ, Blaikie RJ, Gerrard JA. Controlling the dimensions of amyloid fibrils: Toward homogenous components for bionanotechnology. Biopolymers 2011; 97:123-33. [DOI: 10.1002/bip.21709] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 07/05/2011] [Accepted: 07/20/2011] [Indexed: 11/05/2022]
|
20
|
Klingstedt T, Aslund A, Simon RA, Johansson LBG, Mason JJ, Nyström S, Hammarström P, Nilsson KPR. Synthesis of a library of oligothiophenes and their utilization as fluorescent ligands for spectral assignment of protein aggregates. Org Biomol Chem 2011; 9:8356-70. [PMID: 22051883 DOI: 10.1039/c1ob05637a] [Citation(s) in RCA: 135] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular probes for selective identification of protein aggregates are important to advance our understanding of the molecular pathogenesis underlying protein aggregation diseases. Here we report the chemical design of a library of anionic luminescent conjugated oligothiophenes (LCOs), which can be utilized as ligands for detection of protein aggregates. Certain molecular requirements were shown to be necessary for detecting (i) early non-thioflavinophilic protein assemblies of Aβ1-42 and insulin preceding the formation of amyloid fibrils and (ii) for obtaining distinct spectral signatures of the two main pathological hallmarks observed in human Alzheimer's diease brain tissue (Aβ plaques and neurofibrillary tangles). Our findings suggest that a superior anionic LCO-based ligand should have a backbone consisting of five to seven thiophene units and carboxyl groups extending the conjugated thiophene backbone. Such LCOs will be highly useful for studying the underlying molecular events of protein aggregation diseases and could also be utilized for the development of novel diagnostic tools for these diseases.
Collapse
Affiliation(s)
- Therése Klingstedt
- Department of Chemistry, Linköping University, SE-581 83 Linköping, Sweden
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Kieninger B, Gioeva Z, Krüger S, Westermark GT, Friedrich RP, Fändrich M, Röcken C. PTAA and B10: new approaches to amyloid detection in tissue-evaluation of amyloid detection in tissue with a conjugated polyelectrolyte and a fibril-specific antibody fragment. Amyloid 2011; 18:47-52. [PMID: 21401323 DOI: 10.3109/13506129.2011.560623] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
AIMS We analysed the suitability of two little known substances for the detection of amyloid in surgical pathology specimens, that is the conjugated polyelectrolyte polythiophene acetic acid (PTAA) and the camelid antibody domain B10. METHODS We compared the amyloid detection of PTAA and B10 to Congo red in 106 amyloid-containing tissue biopsies of diverse anatomical and precursor origin by evaluating the accordance in four grades (grade 0: no staining, grade 1: staining of <33% of the amyloid deposits, grade 2: 33-66% and grade 3:>66%). RESULTS PTAA showed grade 2-3 staining in 57 (54%) cases, while B10 presented this accordance in only 25 (24%) tissue biopsies. Grade 1 staining was found in 11 (10%) samples with PTAA and in 62 (58%) cases with B10. No staining at all (grade 0) occurred in 38 (36%) biopsies when using PTAA and in 19 (18%) cases when using B10. CONCLUSION Although conformation-sensitive detection seemed promising, PTAA and B10 stain only a fraction of the examined amyloid samples when using routine surgical pathology settings. This study emphasises the necessity of having optimised pre-analytical protocols for recovery, storage and handling of samples if these novel amyloid ligands are to be used in routine diagnosis of amyloid.
Collapse
Affiliation(s)
- Barbara Kieninger
- Institute of Pathology, Charité University Hospital, Berlin, Germany
| | | | | | | | | | | | | |
Collapse
|
22
|
Wigenius J, Persson G, Widengren J, Inganäs O. Interactions Between a Luminescent Conjugated Oligoelectrolyte and Insulin During Early Phases of Amyloid Formation. Macromol Biosci 2011; 11:1120-7. [DOI: 10.1002/mabi.201100016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 04/05/2011] [Indexed: 11/09/2022]
|
23
|
Rodríguez-Pérez JC, Hamley IW, Squires AM. Infrared Linear Dichroism Spectroscopy on Amyloid Fibrils Aligned by Molecular Combing. Biomacromolecules 2011; 12:1810-21. [DOI: 10.1021/bm200167n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Ian W. Hamley
- Department of Chemistry, University of Reading, Reading, RG6 6AD, United Kingdom
| | - Adam M. Squires
- Department of Chemistry, University of Reading, Reading, RG6 6AD, United Kingdom
| |
Collapse
|
24
|
Wigenius J, Andersson MR, Esbjörner EK, Westerlund F. Interactions between a luminescent conjugated polyelectrolyte and amyloid fibrils investigated with flow linear dichroism spectroscopy. Biochem Biophys Res Commun 2011; 408:115-9. [DOI: 10.1016/j.bbrc.2011.03.132] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2011] [Accepted: 03/30/2011] [Indexed: 11/28/2022]
|
25
|
Müller C, Hamedi M, Karlsson R, Jansson R, Marcilla R, Hedhammar M, Inganäs O. Woven electrochemical transistors on silk fibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:898-901. [PMID: 21328487 DOI: 10.1002/adma.201003601] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Revised: 11/16/2010] [Indexed: 05/23/2023]
Affiliation(s)
- Christian Müller
- Department of Physics, Chemistry & Biology, Linköping University, 58183 Linköping, Sweden.
| | | | | | | | | | | | | |
Collapse
|
26
|
Müller C, Jansson R, Elfwing A, Askarieh G, Karlsson R, Hamedi M, Rising A, Johansson J, Inganäs O, Hedhammar M. Functionalisation of recombinant spider silk with conjugated polyelectrolytes. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03270k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
27
|
Hamedi M, Wigenius J, Tai FI, Björk P, Aili D. Polypeptide-guided assembly of conducting polymer nanocomposites. NANOSCALE 2010; 2:2058-2061. [PMID: 20689898 DOI: 10.1039/c0nr00299b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A strategy for fabrication of electroactive nanocomposites with nanoscale organization, based on self-assembly, is reported. Gold nanoparticles are assembled by a polypeptide folding-dependent bridging. The polypeptides are further utilized to recruit and associate with a water soluble conducting polymer. The polymer is homogenously incorporated into the nanocomposite, forming conducting pathways which make the composite material highly conducting.
Collapse
Affiliation(s)
- Mahiar Hamedi
- Division of Biomolecular and Organic Electronics Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | | | | | | | | |
Collapse
|
28
|
Li F, Palaniswamy G, de Jong MR, Aslund A, Konradsson P, Marcelis ATM, Sudhölter EJR, Stuart MAC, Leermakers FAM. Nanowires formed by the co-assembly of a negatively charged low-molecular weight gelator and a zwitterionic polythiophene. Chemphyschem 2010; 11:1956-60. [PMID: 20376870 DOI: 10.1002/cphc.200900946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Conjugated organic nanowires have been prepared by co-assembling a carboxylate containing low-molecular weight gelator (LMWG) and an amino acid substituted polythiophene derivative (PTT). Upon introducing the zwitterionic polyelectrolyte PTT to a basic molecular solution of the organogelator, the negative charges on the LMWG are compensated by the positive charges of the PTT. As a result, nanowires form through co-assembly. These nanowires are visualized by both transmission electron microscopy (TEM) and atomic force microscopy (AFM). Depending on the concentration and ratio of the components these nanowires can be micrometers long. These measurements further suggest that the aggregates adopt a helical conformation. The morphology of these nanowires are studied with fluorescent confocal laser scanning microscopy (CLSM). The interactions between LMWG and PTT are characterized by steady-state and time-resolved fluorescence spectroscopy studies. The steady-state spectra indicate that the backbone of the PTT adopts a more planar and more aggregated conformation when interacting with LMWG. The time- resolved fluorescence decay studies confirm this interpretation.
Collapse
Affiliation(s)
- Feng Li
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Rizzo A, Inganäs O, Solin N. Preparation of phosphorescent amyloid-like protein fibrils. Chemistry 2010; 16:4190-5. [PMID: 20229540 DOI: 10.1002/chem.201000146] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Aurora Rizzo
- Linköping University, Biomolecular and Organic Electronics, Department of Physics, Chemistry, and Biology (IFM), 58183 Linköping, Sweden
| | | | | |
Collapse
|
30
|
Thomsson D, Lin H, Scheblykin IG. Correlation analysis of fluorescence intensity and fluorescence anisotropy fluctuations in single-molecule spectroscopy of conjugated polymers. Chemphyschem 2010; 11:897-904. [PMID: 20087921 DOI: 10.1002/cphc.200900724] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Single-molecule spectroscopy techniques are used to investigate time fluctuations of the fluorescence properties of two different types of conjugated polymer, a polythiophene derivative (PDOPT) and a phenylene vinylene derivative (MEH-PPV), at 100 and 293 K. Linear correlation coefficients between fluorescence intensity and polarization are used to characterize fluctuations. We are able to distinguish between different blinking and bleaching effects on the polarization. Furthermore, the polarization data reveal clear differences in the topology of these two polymers, which is related to the ordered conformation of the MEH-PPV. Plots of correlation coefficients appear to be very different for the two polymers and are also very sensitive to temperature. These observations prove that correlation analysis is a useful tool to understand fluorescence fluctuations in multi-chromophoric systems.
Collapse
Affiliation(s)
- Daniel Thomsson
- Department of Chemical Physics, Lund University, P.O. Box 124, 22100 Lund, Sweden
| | | | | |
Collapse
|
31
|
Björk P, Herland A, Hamedi M, Inganäs O. Biomolecular nanowires decorated by organic electronic polymers. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b910639a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
32
|
Åslund A, Sigurdson CJ, Klingstedt T, Grathwohl S, Bolmont T, Dickstein DL, Glimsdal E, Prokop S, Lindgren M, Konradsson P, Holtzman DM, Hof PR, Heppner FL, Gandy S, Jucker M, Aguzzi A, Hammarström P, Nilsson KPR. Novel pentameric thiophene derivatives for in vitro and in vivo optical imaging of a plethora of protein aggregates in cerebral amyloidoses. ACS Chem Biol 2009; 4:673-84. [PMID: 19624097 DOI: 10.1021/cb900112v] [Citation(s) in RCA: 242] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Molecular probes for selective identification of protein aggregates are important to advance our understanding of the molecular pathogenesis underlying cerebral amyloidoses. Here we report the chemical design of pentameric thiophene derivatives, denoted luminescent conjugated oligothiophenes (LCOs), which could be used for real-time visualization of cerebral protein aggregates in transgenic mouse models of neurodegenerative diseases by multiphoton microscopy. One of the LCOs, p-FTAA, could be utilized for ex vivo spectral assignment of distinct prion deposits from two mouse-adapted prion strains. p-FTAA also revealed staining of transient soluble pre-fibrillar non-thioflavinophilic Abeta-assemblies during in vitro fibrillation of Abeta peptides. In brain tissue samples, Abeta deposits and neurofibrillary tangles (NFTs) were readily identified by a strong fluorescence from p-FTAA and the LCO staining showed complete co-localization with conventional antibodies (6E10 and AT8). In addition, a patchy islet-like staining of individual Abeta plaque was unveiled by the anti-oligomer A11 antibody during co-staining with p-FTAA. The major hallmarks of Alzheimer's disease, namely, Abeta aggregates versus NFTs, could also be distinguished because of distinct emission spectra from p-FTAA. Overall, we demonstrate that LCOs can be utilized as powerful practical research tools for studying protein aggregation diseases and facilitate the study of amyloid origin, evolution and maturation, Abeta-tau interactions, and pathogenesis both ex vivo and in vivo.
Collapse
Affiliation(s)
- Andreas Åslund
- Department of Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
| | - Christina J. Sigurdson
- Institute of Neuropathology, Department of Pathology, Universitätsspital Zürich, Schmelzbergstrasse 12, CH-8091 Zürich, Switzerland
| | - Therése Klingstedt
- Department of Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
| | - Stefan Grathwohl
- Department of Cellular Neurology, Hertie-Institute for Clinical Brain Research, University of Tuebingen, D-72076 Tuebingen, Germany
| | - Tristan Bolmont
- Department of Cellular Neurology, Hertie-Institute for Clinical Brain Research, University of Tuebingen, D-72076 Tuebingen, Germany
| | - Dara L. Dickstein
- Department of Neuroscience, Mount Sinai School of Medicine, New York, New York 10029
- Alzheimer’s Disease Research Center, Mount Sinai School of Medicine, New York, New York 10029
| | - Eirik Glimsdal
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Stefan Prokop
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, D-13353 Berlin, Germany
| | - Mikael Lindgren
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Peter Konradsson
- Department of Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
| | - David M. Holtzman
- Department of Neurology, Alzheimer’s Disease Research Center, Washington University, St. Louis, Missouri 63110
| | - Patrick R. Hof
- Department of Neuroscience, Mount Sinai School of Medicine, New York, New York 10029
- Alzheimer’s Disease Research Center, Mount Sinai School of Medicine, New York, New York 10029
| | - Frank L. Heppner
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, D-13353 Berlin, Germany
| | - Samuel Gandy
- Alzheimer’s Disease Research Center, Mount Sinai School of Medicine, New York, New York 10029
- Departments of Neurology and Psychiatry, Mount Sinai School of Medicine, New York, New York 10029
| | - Mathias Jucker
- Department of Cellular Neurology, Hertie-Institute for Clinical Brain Research, University of Tuebingen, D-72076 Tuebingen, Germany
| | - Adriano Aguzzi
- Institute of Neuropathology, Department of Pathology, Universitätsspital Zürich, Schmelzbergstrasse 12, CH-8091 Zürich, Switzerland
| | - Per Hammarström
- Department of Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
| | - K. Peter R. Nilsson
- Department of Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
- Institute of Neuropathology, Department of Pathology, Universitätsspital Zürich, Schmelzbergstrasse 12, CH-8091 Zürich, Switzerland
| |
Collapse
|
33
|
Aslund A, Nilsson KPR, Konradsson P. Fluorescent oligo and poly-thiophenes and their utilization for recording biological events of diverse origin-when organic chemistry meets biology. J Chem Biol 2009; 2:161-75. [PMID: 19649670 DOI: 10.1007/s12154-009-0024-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 06/21/2009] [Accepted: 06/29/2009] [Indexed: 12/23/2022] Open
Abstract
The technique of using luminescent oligo-thiophenes and luminescent conjugated poly-thiophenes to monitor biological processes has gained increased interest from scientists within different research areas, ranging from organic chemistry and photo-physics to biology since its introduction. The technique is generally straightforward and requires only standard equipment, and the result is available within minutes from sample preparation. In this review, the syntheses of oligo and polythiophenes developed over the last decades are discussed. Furthermore, the utilization of these molecular agents for exploring biological events, e.g., DNA hybridization or protein misfolding events, are covered.
Collapse
Affiliation(s)
- Andreas Aslund
- Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden,
| | | | | |
Collapse
|
34
|
Whitehead TA, Je E, Clark DS. Rational shape engineering of the filamentous protein gamma prefoldin through incremental gene truncation. Biopolymers 2009; 91:496-503. [PMID: 19189379 DOI: 10.1002/bip.21157] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
An enticing possibility in nanotechnology is to use proteins as templates for the positioning of molecules in regular patterns with nanometer precision over large surface areas. However, the ability to redesign protein quaternary structure to construct new shapes remains underdeveloped. In the present work, we have engineered the dimensions of a filamentous protein, the gamma prefoldin (gamma PFD) from the hyperthermophile Methanocaldococcus jannaschii, and have achieved controllable attachment of filaments in a specific orientation on a carbon surface. Four different constructs of gamma PFD were generated in which the coiled coils extending from the association domain are progressively truncated. Three of the truncation constructs form well-defined filaments with predictable dimensions according to transmission electron microscopy. Two of these constructs had 2D persistence lengths similar to that of gamma PFD at 300-740 nm. In contrast, the 2D persistence length of the shortest truncation mutant was 3500 nm, indicating that the filament adsorbs along a different axis than the other constructs with its two rows of coiled coils facing out from the surface. The elastic moduli of the filaments range from 0.7-2.1 GPa, similar to rigid plastics and within the lower limit for proteins whose primary intermolecular interaction is hydrogen bonding. These results demonstrate a versatile approach for controlling the overall dimensions and surface orientation of protein filaments, and expand the toolbox by which to tune two overall dimensions in protein space for the creation of templated materials over a wide variety of conditions. (c) 2009 Wiley Periodicals, Inc. Biopolymers 91: 496-503, 2009.
Collapse
Affiliation(s)
- Timothy A Whitehead
- Department of Chemical Engineering, University of California, Berkeley, CA 94720, USA
| | | | | |
Collapse
|
35
|
Gus'kova OA, Khalatur PG, Khokhlov AR. Self-Assembled Polythiophene-Based Nanostructures: Numerical Studies. MACROMOL THEOR SIMUL 2009. [DOI: 10.1002/mats.200800090] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
36
|
Gus’kova OA, Schillinger E, Khalatur PG, Bäuerle P, Khokhlov AR. Bioinspired hybrid systems based on oligothiophenes and peptides (ALA-GLY)n: Computer-aided simulation of adsorption layers. POLYMER SCIENCE SERIES A 2009. [DOI: 10.1134/s0965545x09040099] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
37
|
Björk P, Thomsson D, Mirzov O, Wigenius J, Inganäs O, Scheblykin IG. Oligothiophene assemblies defined by DNA interaction: from single chains to disordered clusters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:96-103. [PMID: 19040213 DOI: 10.1002/smll.200800855] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The organization of conjugated polyelectrolytes (CPEs) interacting with biomolecules sets conditions for the biodetection of biological processes and identity, through the use of optical emission from the CPE. Herein, a well-defined CPE and its binding to DNA is studied. By using dynamic light scattering and circular dichroism spectroscopy, it is shown that the CPE forms a multimolecule ensemble in aqueous solution that is more than doubled in size when interacting with a small DNA chain, while single chains are evident in ethanol. The related changes in the fluorescence spectra upon polymer aggregation are assigned to oscillator strength redistribution between vibronic transitions in weakly coupled H-aggregates. An enhanced single-molecule spectroscopy technique that allows full control of excitation and emission light polarization is applied to combed and decorated lambdaDNA chains. It is found that the organization of combed CPE-lambdaDNA complexes (when dry on the surface) allows considerable variation of CPE distances and direction relative to the DNA chain. By analysis of the polarization data energy transfer between the polymer chains in individual complexes is confirmed and their sizes estimated.
Collapse
Affiliation(s)
- Per Björk
- Biomolecular and Organic Electronics, Department of Physics, Chemistry, and Biology, Linköping University, 581 83 Linköping, Sweden
| | | | | | | | | | | |
Collapse
|
38
|
Gras SL. Surface- and Solution-Based Assembly of Amyloid Fibrils for Biomedical and Nanotechnology Applications. ENGINEERING ASPECTS OF SELF-ORGANIZING MATERIALS 2009. [DOI: 10.1016/s0065-2377(08)00206-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
39
|
Tanaka H, Herland A, Lindgren LJ, Tsutsui T, Andersson MR, Inganäs O. Enhanced current efficiency from bio-organic light-emitting diodes using decorated amyloid fibrils with conjugated polymer. NANO LETTERS 2008; 8:2858-2861. [PMID: 18698726 DOI: 10.1021/nl801510z] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We demonstrate the use of self-assembled bionanostructures in polymer light-emitting diodes. Amyloid fibrils formed by protein misfolding were decorated with a soluble luminescent conjugated polymer. This conjugated polymer complex with amyloid fibrils was used as the active layer in a light emitting diode, resulting in a 10-fold increase in external quantum efficiency compared with pristine polymer, because of improved carrier injection.
Collapse
Affiliation(s)
- Hideyuki Tanaka
- Biomolecular and Organic Electronics, IFM, Linkopings University, SE-581 83 Linkoping, Sweden
| | | | | | | | | | | |
Collapse
|
40
|
Gus’kova OA, Khalatur PG, Khokhlov AR. Molecular chimeras: New strategies in the design of functional materials. ACTA ACUST UNITED AC 2008. [DOI: 10.1134/s1995078008070112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
41
|
Hamedi M, Herland A, Karlsson RH, Inganäs O. Electrochemical devices made from conducting nanowire networks self-assembled from amyloid fibrils and alkoxysulfonate PEDOT. NANO LETTERS 2008; 8:1736-40. [PMID: 18465901 DOI: 10.1021/nl0808233] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Proteins offer an almost infinite number of functions and geometries for building nanostructures. Here we have focused on amyloid fibrillar proteins as a nanowire template and shown that these fibrils can be coated with the highly conducting polymer alkoxysulfonate PEDOT through molecular self-assembly in water. Transmission electron microscopy and atomic force microscopy show that the coated fibers have a diameter around 15 nm and a length/thickness aspect ratio >1:1000 . We have further shown that networks of the conducting nanowires are electrically and electrochemically active by constructing fully functional electrochemical transistors with nanowire networks, operating at low voltages between 0 and 0.5 V.
Collapse
Affiliation(s)
- Mahiar Hamedi
- Chemistry, IFM, and Biomolecular and Organic Electronics, IFM, Linköping University, Linköping, Sweden.
| | | | | | | |
Collapse
|
42
|
Lin H, Tabaei SR, Thomsson D, Mirzov O, Larsson PO, Scheblykin IG. Fluorescence Blinking, Exciton Dynamics, and Energy Transfer Domains in Single Conjugated Polymer Chains. J Am Chem Soc 2008; 130:7042-51. [DOI: 10.1021/ja800153d] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hongzhen Lin
- Chemical Physics and Pure and Applied Biochemistry, Lund University, Box 124, 22100 Lund, Sweden
| | - Seyed R. Tabaei
- Chemical Physics and Pure and Applied Biochemistry, Lund University, Box 124, 22100 Lund, Sweden
| | - Daniel Thomsson
- Chemical Physics and Pure and Applied Biochemistry, Lund University, Box 124, 22100 Lund, Sweden
| | - Oleg Mirzov
- Chemical Physics and Pure and Applied Biochemistry, Lund University, Box 124, 22100 Lund, Sweden
| | - Per-Olof Larsson
- Chemical Physics and Pure and Applied Biochemistry, Lund University, Box 124, 22100 Lund, Sweden
| | - Ivan G. Scheblykin
- Chemical Physics and Pure and Applied Biochemistry, Lund University, Box 124, 22100 Lund, Sweden
| |
Collapse
|
43
|
Herland A, Thomsson D, Mirzov O, Scheblykin IG, Inganäs O. Decoration of amyloid fibrils with luminescent conjugated polymers. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b712829k] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
44
|
Herland A, Inganäs O. Conjugated Polymers as Optical Probes for Protein Interactions and Protein Conformations. Macromol Rapid Commun 2007. [DOI: 10.1002/marc.200700281] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
45
|
Abstract
In the early 1900s, Alois Alzheimer diagnosed one of his patients with a devastating neurological impairment, and this form of dementia became known as Alzheimer's disease (AD). Much research over the past century has clearly established that numerous human diseases, ranging from AD and Parkinson's disease to dialysis-related amyloidosis, are best characterized by the abnormal aggregation of specific proteins. However, in the case of AD, the true toxic molecular species is still debated. Thus, the recent development of new diagnostic agents capable of distinguishing between different morphologies of aggregated proteins is of much interest.
Collapse
Affiliation(s)
- Cliff I Stains
- Department of Chemistry, University of Arizona, Tucson, Arizona 85721, USA
| | | |
Collapse
|