突触蛋白质组修饰和皮质电路功能障碍与α-synuclein聚合的早期进展有关
Sayan Dutta1,2, Jennifer Hensel1,2, Alicia Scott1,2
1Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, USA.
bioRxiv : the preprint server for biology
|February 3, 2025
概括
帕金森病 (PD) 涉及皮质功能障碍. 这项研究发现,α-synuclein种子改变脑细胞信号通路,影响神经元功能,并可能导致新的PD治疗方法.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 系统生物学 系统生物学
背景情况:
- 皮质功能障碍导致帕金森病 (PD) 和同核蛋白病变的非运动症状.
- 在临床前的PD模型中,驱动皮质电路改变的分子机制在很大程度上是未知的.
研究的目的:
- 为了研究动物皮层在暴露于α-synuclein (aSyn) 种子后的组织水平分子变化.
- 阐明aSyn病理传播对皮质电路功能和信号传递的影响.
主要方法:
- 在老鼠和小鼠模型中使用了多种omics方法 (蛋白质组学,蛋白质组学,脂质分析).
- 通过内或皮质内注射给药的α-synuclein预制纤维素 (PFFs).
- 在蛋白质和蛋白质数据上进行基因本体学和生物信息学分析.
主要成果:
- 在感觉运动皮质中观察到显著的蛋白质变化,但没有全球蛋白质或脂质变化.
- 阿尔法-同核素PFFs改变了与突触传播和细胞骨组织相关的途径.
- 功能分析显示,神经元发射速度增加和尖峰-尖峰连贯性增强,表明依赖种子的皮质功能障碍.
结论:
- 酸化介导的信号通路在皮质对α-synuclein病理学的反应中至关重要.
- 素激酶-2 (CK2) 与观察到的蛋白质基因变化有关.
- 研究结果提供了对PD皮质电路功能障碍的见解,并提出了潜在的治疗点.
相关概念视频
01:37Neural Regulation
39.1K
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
39.1K
01:26Alzheimer's Disease: Overview
437
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
437
03:03Amyloid Fibrils
9.2K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.2K