Quantum dots multifunctionalized with the amyloid protein alpha-synuclein act at nanomolar concentrations as very potent inducers of the aggregation of micromolar-millimolar bulk concentrations of the protein in vitro and in cells. Fibrillation in live cells, a process diagnostic of Parkinson's disease, is accelerated up to 15-fold with only approximately 100 nanoparticles. The combination with a tetracysteine-tagged form of alpha-synuclein specific for fluorogenic biarsenicals constitutes a very sensitive system for studying pathological amyloid formation in cells.
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Roberti et al. (2009) studied this question.
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