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The amyloid-like property of the nanofibrils was confirmed via thioflavinT staining and atomic force microscopy.
2
Interestingly, changes in the fluorescence excitation and emission of thioflavinT were also dependent on the micelle formation.
3
Our data suggests that the micelles of thioflavinT bind amyloid fibrils leading to enhancement of fluorescence emission.
4
As shown by thioflavinT fluorescence monitoring, the formation of this cross-link accelerated the aggregation of native alpha-synuclein.
5
A tridecapeptide containing this sequence formed fibers that bound Congo red and thioflavinT and had characteristic amyloid morphology.
6
Increasing concentration of thioflavinT above the critical micellar concentration shows increased numbers of micelles bound along the length of the amyloid fibrils.
7
This suggests that positive charge on the thioflavinT molecule has a role in its micelle formation that then bind the amyloid fibrils.
8
We find, using thioflavinT fluorescence and electron microscopy assays, that 30 of the molecules inhibit the aggregation process, whereas 36 activate fibril formation.
9
In aqueous solutions, thioflavinT was found to exist as micelles at concentrations commonly used to monitor fibrils by fluorescence assay (approximately 10-20 microM).