Fluorescent ratiometric MFC probe sensitive to early stages of α-Synuclein aggregation

Abstract

We introduce a sensor molecule, AS140-MFC, consisting of a covalent adduct of an Ala-to-Cys mutant of α-synuclein with the 3-hydroxychromone dual emission dye MFC. We show that the AS140-MFC construct is a multiparametric fluorescent probe suitable for the continuous monitoring of protein aggregation and is sensitive to the early and intermediate stages of α-synuclein aggregation, a process associated with Parkinsons disease.