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Ana Carreras Mascaro¹, Martyna M Grochowska¹, Valerie Boumeester¹

¹Department of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.

Cellular and molecular life sciences : CMLS

|February 5, 2024

概括

自体主导的LRP10变体与莱维体病 (LBD) 有关. 这项研究揭示了LRP10影响α-synuclein分泌,并可能在LBD病变发生过程中发挥作用.

科学领域:

神经科学是一个神经科学.
遗传学遗传学是一个

背景情况:

在LRP10的自体主导变异与勒维体疾病 (LBDs) 相关,包括帕金森病 (PD),帕金森病痴呆症 (PDD) 和勒维体痴呆症 (DLB).
在LBD病变发生过程中LRP10的确切作用在机理上尚不清楚,尽管LRP10在受影响个体的莱维体中被发现.

研究的目的:

研究LBDs中的LRP10细胞机制.
探索LRP10和α-synuclein在疾病发病过程中的相互作用.

主要方法:

研究了野生型LRP10的分泌和内部化通过细胞外囊泡 (EVs) 和克拉特林依赖性内细胞化.
在iPSC衍生的脑器官中,在自抑制下检查LRP10分泌.
分析了LRP10过度表达对α-synuclein分泌和水平的影响.
在患者衍生天体细胞中的LRP10变异的特征及其对LRP10和α-synuclein的影响.

主要成果:

野生类型的LRP10通过EVs分泌,并通过克拉特林依赖性内细胞结合体内化,分泌对自抑制敏感.
过度表达LRP10会增加α-synuclein分泌并改变细胞内α-synuclein水平.
一种患者衍生的LRP10拼接变体 (LRP10^splice) 结合野生型LRP10,降低其水平,并对抗其对α-synuclein的影响.

结论:

通过调节细胞内和细胞外α-synuclein水平,LRP10在LBD中发挥功能作用.
LRP10拼接变体通过破坏正常的LRP10功能和影响α-synuclein来促进LBD病变.
这些发现突出了LRP10和α-synuclein通路的重点,突出了LBD的潜在治疗目标.

关键词:

星球细胞是星球细胞.大脑有机体是大脑中的有机体.患有勒维体的痴呆症 (DLB)细胞外囊泡 (EVs) 是一种细胞外囊泡.诱导多能干细胞 (iPSC) 是一种莱维体疾病 (LBDs) 是一种致病性疾病.低密度脂蛋白受体相关蛋白10 (LRP10) 是一种低密度脂蛋白受体相关蛋白.帕金森病 (PD) 是一种疾病.α-Synuclein 是一种蛋白质.

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