Application of α-Syn Real-Time Quaking-Induced Conversion for Brain and Skin Specimens of the Chinese Patients With Parkinson’s Disease

Autor: Dong-Dong Chen, Ling Jiao, Yue Huang, Kang Xiao, Li-Ping Gao, Cao Chen, Qi Shi, Xiao-Ping Dong
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Frontiers in Aging Neuroscience, Vol 14 (2022)
Druh dokumentu: article
ISSN: 1663-4365
DOI: 10.3389/fnagi.2022.898516
Popis: The real-time quaking-induced conversion (RT-QuIC) assay has been developed and used as an in vitro diagnostic tool for Parkinson’s disease (PD). In this study, we established α-Syn RT-QuIC using recombinant human α-Syn as the substrate. All 5 brain homogenates of neuropathological PD cases and 13 skin homogenates of clinical PD cases showed positive results, whereas all the samples of negative controls remain negative. Meantime, randomly selected 6 skin samples of PD cases and 6 skin samples of sCJD cases showed negative in opposite prion RT-QuIC and α-Syn RT-QuIC. Our α-Syn RT-QuIC showed dose-dependent manner between the lag times and peak ThT fluorescent values. Additionally, the detecting limitation was about 10–7 dilution for brain tissues and 10–6 for skins. Those data indicate a reliable specificity and good sensitivity of the established α-Syn RT-QuIC in identifying and amplifying the misfolded α-Syn in brain and skin tissues of patients with PD.
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