大脑中的AIMP2积累导致认知缺陷和帕金森病的血液分泌
Heejeong Kim1,2, Jeong-Yong Shin1,2, Sangwoo Ham1,2,3
1Department of Pharmacology, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea.
Journal of translational medicine
|October 10, 2024
概括
大脑中氨基-tRNA合成酶相互作用多功能蛋白-2 (AIMP2) 的积累有助于帕金森病 (PD) 的认知衰退. 血AIMP2水平升高显示,它有可能成为PD诊断的可靠生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 病理学 病理学 病理学
背景情况:
- 神经α-synuclein病理传播与帕金森病 (PD) 痴呆症和勒维体疾病痴呆症的认知障碍相关.
- 之前的研究确定了阿米诺-tRNA合成酶相互作用多功能蛋白-2 (AIMP2) 在高级PD大脑中的积累.
- 在PD相关的认知功能障碍中AIMP2的特定病理作用仍然不清楚.
研究的目的:
- 调查海马体AIMP2积累的病理作用及其对帕金森病认知障碍的贡献.
- 探索AIMP2作为PD诊断生物标志物的潜力.
- 为了检查AIMP2.2的细胞间传染性.
主要方法:
- 在转基因小鼠和死后PD大脑中AIMP2的免疫光成像.
- 在AIMP2转基因小鼠中使用巴恩斯迷宫评估认知功能.
- 对内皮细胞AIMP2分泌和吸收的评估.
- 在PD患者和对照患者的血AIMP2水平的ELISA和ROC曲线分析.
主要成果:
- AIMP2积累对海马神经元有毒,导致AIMP2转基因小鼠的渐进性认知障碍.
- 神经AIMP2表达与PD中的大脑内皮AIMP2表达相关.
- 分泌的AIMP2被内皮细胞吸收,这表明细胞对细胞的传播.
- 在PD患者中血AIMP2水平升高是可靠的诊断生物标志物.
结论:
- 在海马体中AIMP2的病理作用及其细胞间传染性为PD提供了新的治疗点.
- 血AIMP2,可能与α-synuclein结合,可以提高早期PD诊断的准确性.
相关概念视频
Neural 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
Parkinson's Disease: Overview
487
Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
487
Parkinson's Disease: Treatment
231
Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
231
Alzheimer's Disease: Overview
449
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...
449


