Imaging α-synuclein pathologies in animal models and patients with Parkinson's and related diseases

Hironobu Endo, Maiko Ono, Yuhei Takado, Kiwamu Matsuoka, Manami Takahashi, Kenji Tagai, Yuko Kataoka, Kosei Hirata, Keisuke Takahata, Chie Seki, Naomi Kokubo, Masayuki Fujinaga, Wakana Mori, Yuji Nagai, Koki Mimura, Katsushi Kumata, Tatsuya Kikuchi, Aki Shimozawa, Sushil K. Mishra, Yoshiki YamaguchiHiroshi Shimizu, Akiyoshi Kakita, Hiroyuki Takuwa, Hitoshi Shinotoh, Hitoshi Shimada, Yasuyuki Kimura, Masanori Ichise, Tetsuya Suhara, Takafumi Minamimoto, Naruhiko Sahara, Kazunori Kawamura, Ming Rong Zhang, Masato Hasegawa, Makoto Higuchi

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Deposition of α-synuclein fibrils is implicated in Parkinson's disease (PD) and dementia with Lewy bodies (DLB), while in vivo detection of α-synuclein pathologies in these illnesses has been challenging. Here, we have developed a small-molecule ligand, C05-05, for visualizing α-synuclein deposits in the brains of living subjects. In vivo optical and positron emission tomography (PET) imaging of mouse and marmoset models demonstrated that C05-05 captured a dynamic propagation of fibrillogenesis along neural pathways, followed by disruptions of these structures. High-affinity binding of 18F-C05-05 to α-synuclein aggregates in human brain tissues was also proven by in vitro assays. Notably, PET-detectable 18F-C05-05 signals were intensified in the midbrains of PD and DLB patients as compared with healthy controls, providing the first demonstration of visualizing α-synuclein pathologies in these illnesses. Collectively, we propose a new imaging technology offering neuropathology-based translational assessments of PD and allied disorders toward diagnostic and therapeutic research and development.

Original languageEnglish
Pages (from-to)2540-2557.e8
JournalNeuron
Volume112
Issue number15
DOIs
Publication statusPublished - 07-08-2024
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Neuroscience

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