AbstractMonoamine oxidase-B (MAO-B) is a well-established therapeutic target for Parkinson’s disease (PD); however, previous clinical studies on currently available irreversible MAO-B inhibitors have yielded disappointing neuroprotective effects. Here, we tested the therapeutic potential of KDS2010, a recently synthesized potent, selective, and reversible MAO-B inhibitor in multiple animal models of PD. We designed and synthesized a series of α-aminoamide derivatives and found that derivative KDS2010 exhibited the highest potency, specificity, reversibility, and bioavailability (> 100%). In addition, KDS2010 demonstrated significant neuroprotective and anti-neuroinflammatory efficacy against nigrostriatal pathway destruction in the mouse MPTP model of parkinsonism. Treatment with KDS2010 also alleviated parkinsonian motor dysfunction in 6-hydroxydopamine-induced and A53T mutant α-synuclein overexpression rat models of PD. Moreover, KDS2010 showed virtually no toxicity or side effects in non-human primates. KDS2010 could be a next-generation therapeutic candidate for PD.
单胺氧化酶-B(MAO-B)是帕金森病(PD)的一个被广泛认可的治疗靶点;然而,先前对目前可用的不可逆MAO-B抑制剂进行的临床研究显示出令人失望的神经保护效果。在这里,我们测试了KDS2010的治疗潜力,这是一种最近合成的强效、选择性和可逆的MAO-B抑制剂,在多个PD动物模型中进行了测试。我们设计并合成了一系列α-氨酰胺衍生物,并发现衍生物KDS2010表现出最高的效力、特异性、可逆性和生物利用度(> 100%)。此外,KDS2010在小鼠MPTP帕金森病模型中表现出显著的神经保护和抗神经炎症效果,对黑质纹状体通路的破坏具有显著作用。KDS2010治疗还缓解了6-羟基多巴胺诱导和A53T突变α-突触核蛋白过表达大鼠PD模型的帕金森病运动功能障碍。此外,KDS2010在非人灵长类动物中几乎没有毒性或副作用。KDS2010可能是PD的下一代治疗候选药物。