Concept for simultaneous and specific in situ monitoring of amyloid oligomers and fibrils via Förster resonance energy transfer
Oligomeric species of amyloidogenic peptides or proteins are often considered as the most toxic species in several amyloid disorders, like Alzheimer or Parkinson's diseases, and hence came into the focus of research interest and as a therapeutic target. An easy and specific monitoring of oligom...
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Veröffentlicht in: | Analytical chemistry (Washington) 2014-12, Vol.86 (23), p.11877-11882 |
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creator | Alies, Bruno Eury, Helene Essassi, El Mokhtar Pratviel, Genevieve Hureau, Christelle Faller, Peter |
description | Oligomeric species of amyloidogenic peptides or proteins are often considered as the most toxic species in several amyloid disorders, like Alzheimer or Parkinson's diseases, and hence came into the focus of research interest and as a therapeutic target. An easy and specific monitoring of oligomeric species would be of high utility in the field, as it is the case for thioflavin T fluorescence for the fibrillar aggregates. Here, we show proof of concept for a new sensitive method to increase specific detection of oligomers by two extrinsic fluorophores. This is achieved by exploiting a Förster resonance energy transfer (FRET) between the two fluorophores. Thus, a mixture of two extrinsic fluorophores, bis-ANS and a styrylquinoxalin derivative, enabled one to monitor simultaneously and in situ the presence of oligomers and fibrils of amyloidogenic peptides. Thereby, the formation of oligomers and their transformation into fibrils can be followed. |
doi_str_mv | 10.1021/ac503509g |
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An easy and specific monitoring of oligomeric species would be of high utility in the field, as it is the case for thioflavin T fluorescence for the fibrillar aggregates. Here, we show proof of concept for a new sensitive method to increase specific detection of oligomers by two extrinsic fluorophores. This is achieved by exploiting a Förster resonance energy transfer (FRET) between the two fluorophores. Thus, a mixture of two extrinsic fluorophores, bis-ANS and a styrylquinoxalin derivative, enabled one to monitor simultaneously and in situ the presence of oligomers and fibrils of amyloidogenic peptides. Thereby, the formation of oligomers and their transformation into fibrils can be followed.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>25380342</pmid><doi>10.1021/ac503509g</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0003-0688-2107</orcidid><orcidid>https://orcid.org/0000-0003-3339-0239</orcidid></addata></record> |
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subjects | Amyloid - analysis Amyloid - chemistry Analytical chemistry Anilino Naphthalenesulfonates - chemistry Chemical compounds Chemical Sciences Coordination chemistry Energy transfer Fluorescence Fluorescence Resonance Energy Transfer Fretting Molecular Structure Monitoring Monitors Oligomers Parkinson's disease Peptides Proteins Quinoxalines - chemistry |
title | Concept for simultaneous and specific in situ monitoring of amyloid oligomers and fibrils via Förster resonance energy transfer |
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