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Cited by 331

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Novel Pentameric Thiophene Derivatives for in Vitro and in Vivo Optical Imaging of a Plethora of Protein Aggregates in Cerebral Amyloidoses

Open access
Åslund, Andreas, Sigurdson, Christina J., Klingstedt, Therése, Grathwohl, Stefan, Bolmont, Tristan, Dickstein, Dara L., Glimsdal, Eirik, Prokop, Stefan, Lindgren, Mikael, Konradsson, Peter, Holtzman, David M., Hof, Patrick R., Heppner, Frank L., Gandy, Samuel, Jucker, Mathias, Aguzzi, Adriano, Hammarström, Per, Nilsson, K. Peter R.·2009·ACS Chemical Biology

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.

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Metadata

Authors
Åslund, A., Sigurdson, C. J., Klingstedt, T., Grathwohl, S., Bolmont, T., Dickstein, D. L., Glimsdal, E., Prokop, S., Lindgren, M., Konradsson, P., Holtzman, D. M., Hof, P. R., Heppner, F. L., Gandy, S., Jucker, M., Aguzzi, A., Hammarström, P., & Nilsson, K. P. R.
Venue
ACS Chemical Biology
Published
2009-07-30
Volume
4
Issue
8
Pages
673-684
ISSN
  • 1554-8929 (ISSN-L)
  • 1554-8937
OpenAlex
W2024424098
Cited by
331
References
5
FWCI
10.43
Type
journal article
Language
en
Open access
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CoChat. (2026). Citation check: Novel Pentameric Thiophene Derivatives for in Vitro and in Vivo Optical Imaging of a Plethora of Protein Aggregates in Cerebral Amyloidoses. https://app.cochat.ai/papers/10.1021/cb900112v
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Åslund, A., Sigurdson, C. J., Klingstedt, T., Grathwohl, S., Bolmont, T., Dickstein, D. L., Glimsdal, E., Prokop, S., Lindgren, M., Konradsson, P., Holtzman, D. M., Hof, P. R., Heppner, F. L., Gandy, S., Jucker, M., Aguzzi, A., Hammarström, P., & Nilsson, K. P. R. (2009). Novel Pentameric Thiophene Derivatives for in Vitro and in Vivo Optical Imaging of a Plethora of Protein Aggregates in Cerebral Amyloidoses. ACS Chemical Biology. https://doi.org/10.1021/cb900112v

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.