J Clin Invest. 2019 Aug 5;129(9):3530-3531. doi: 10.1172/JCI130351.
Patients with Parkinson's disease (PD) show selective degeneration of dopaminergic neurons in the substantia nigra and cholinergic neurons in the dorsal motor nucleus (DMnX), but the drivers of this specific susceptibility are unknown. In this issue of the JCI, Musgrove et al. report on their use of an impressive array of in vivo and ex vivo tools for interrogating DMnX neurons and demonstrate that this population exhibits enhanced sensitivity to oxidative stress. Remarkably, this sensitivity was amplified by the overexpression of α-Synuclein (α-Syn), a pathological protein in PD. They further show that oxidative stress augments cell-cell transfer of α-Syn, which may be an important mechanism underlying the development and progression of PD.
帕金森病（PD）患者的黑质多巴胺能神经元和背侧运动核（DMnX）胆碱能神经元选择性退化，但这种特定易感性的驱动因素尚不清楚。在本期 JCI 中，Musgrove 等人报告了他们使用一系列令人印象深刻的体内和体外工具来研究 DMnX 神经元，并证明该细胞群体对氧化应激表现出更高的敏感性。值得注意的是，这种敏感性被 α-突触核蛋白（α-Syn）的过度表达放大，α-Syn 是 PD 中的一种病理性蛋白。他们进一步表明，氧化应激会增强 α-Syn 的细胞间转移，这可能是 PD 发展和进展的一个重要机制。
