Journal Article

PHPPUBDB-26150

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Inhibition of tau filament formation by conformational modulation

Akoury, E. ; Gajda, M. J. ; Pickhardt, M. ; Biernat, J. ; Pornsuwan, S. ; Griesinger, C. ; Mandelkow, E. ; Zweckstetter, M. ; DESY

2013
American Chemical Society Washington, DC

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Please use a persistent id in citations: doi:10.1021/ja312471h

Abstract: Antiaggregation drugs play an important role in therapeutic approaches for Alzheimer's disease. Although a large number of small molecules that inhibit the aggregation of the tau protein have been identified, little is known about their mode of action. Here, we reveal the mechanism and the nature of tau species that are generated by interaction of tau with the organic compound pthalocyanine tetrasulfonate (PcTS). We demonstrate that PcTS interferes with tau filament formation by targeting the protein into soluble oligomers. A combination of NMR spectroscopy, electron paramagnetic resonance, and small-angle X-ray scattering reveals that the soluble tau oligomers contain a dynamic, noncooperatively stabilized core with a diameter of 30-40 nm that is distinct from the core of tau filaments. Our results suggest that specific modulation of the conformation of tau is a viable strategy for reduction of pathogenic tau deposits.

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Contributing Institute(s):

1. Experiments with synchrotron radiation (HASYLAB)
2. Max-Planck-Arbeitsgruppen (MPG)
3. European Molecular Biology Laboratory (EMBL)

Research Program(s):

1. DORIS Beamline D1.2 (POF2-54G13) (POF2-54G13)

Experiment(s):

1. DORIS Beamline D1.2 (DORIS III)

Appears in the scientific report 2013
Notes: (c) American Chemical Society. Post Referee-Version 12 Monate gesperrt (bis Feb. 2014). Code P.

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Database coverage:
; ; No Author Disambiguation

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