在脑脊液中溶解的SORL1作为罕见SORL1变体对功能影响的标志物
Matthijs W J de Waal1,2,3, Sven J van der Lee1,3,4, Melanie Lunding5
1Genomics of Neurodegenerative Diseases and Aging, Human Genetics, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|February 13, 2026
概括
在具有遗传SORL1变异的个体中,可溶性林相关受体 (sSORL1) 的脑脊液 (CSF) 水平较低. 这一发现支持CSF-sSORL1作为神经疾病中SORL1通路功能障碍的潜在生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 生物化学 生物化学
背景情况:
- 索尔相关受体 (SORL1) 在通过逆转激素通路贩运粉样蛋白前体蛋白 (APP) 和粉样β (Aβ) 中起着至关重要的作用.
- 在细胞表面的SORL1裂变释放出一种可溶性形式 (sSORL1) 进入脑脊液 (CSF).
研究的目的:
- 调查CSF-sORL1水平是否可以作为遗传性损害SORL1功能的体内生物标志物.
- 评估CSF-sSORL1水平与SORL1.1中的遗传变异之间的关系.
主要方法:
- 使用酶相关免疫吸收试验 (ELISA) 量化CSF-sSORL1.
- 对218名参与者的分析,包括SORL1变体的携带者,SORL1-野生型 (WT) 阿尔茨海默氏病 (AD) 患者和SORL1-WT对照.
主要成果:
- 在携带蛋白质削减和破坏性误解SORL1变异的携带者中,CSF-sORL1度显著降低.
- 在SORL1-WT AD患者中,CSF-sSORL1水平与酸化 (pTau181) 相相关,但与Aβ42.
- 在SORL1-WT组中,在AD患者和对照组之间没有观察到CSF-sSORL1的显著差异.
结论:
- 损坏的SORL1流通导致受体向细胞表面的递送减少,从而减少sSORL1的分泌.
- CSF-sSORL1显示出作为SORL1功能障碍的特定途径生物标志物的潜力.
- 致病性SORL1变种携带者中中枢液-sSORL1水平的降低表明其作为SORL1功能体内标记物的实用性,以及在AD中与tau病理学的潜在相关性.
相关概念视频
Cerebrospinal Fluid
6.1K
Cerebrospinal fluid (CSF) is a colorless liquid that flows around the brain and the spinal cord, playing a vital role in the protection, support, and overall function of the central nervous system (CNS). CSF production, circulation, and absorption are tightly regulated processes essential for the brain and spinal cord to function properly.
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain....
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain....
6.1K
Solubility of Ionic Compounds
68.3K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
68.3K
Factors Affecting Solubility
37.3K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
37.3K
Solubility Equilibria
57.9K
Solubility equilibria are established when the dissolution and precipitation of a solute species occur at equal rates. These equilibria underlie many natural and technological processes, ranging from tooth decay to water purification. An understanding of the factors affecting compound solubility is, therefore, essential to the effective management of these processes. This section applies previously introduced equilibrium concepts and tools to systems involving dissolution and precipitation.
The...
The...
57.9K
Histone Variants at the Centromere
5.1K
Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
5.1K
Physical Properties Affecting Solubility
27.4K
Solutions of Gases in Liquids
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
27.4K


