在聚合之前,可溶性Tau的动态构造集编码神经元毒性
bioRxiv : the preprint server for biology
|February 9, 2026
概括
了解可溶性形状是对阿尔茨海默病 (AD) 和相关痴呆症 (ADRD) 的关键. 这项研究揭示了神经元中的动态Tau结构,将特定的形状与轴突运输缺陷和聚合前的神经元毒性联系起来.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 结构生物学 结构生物学
背景情况:
- 陶氏聚合定义了阿尔茨海默病 (AD) 和相关的陶氏病变.
- 在聚合之前,神经元中可溶性Tau的构成状态尚不清楚.
- 基于纤维状Tau的现有模型对早期病理物种的洞察力有限.
研究的目的:
- 在生理和疾病相关条件下,定义神经元中可溶性Tau的构造组合.
- 调查疾病相关的扰动如何改变陶氏结构和功能.
- 为了将特定的可溶性Tau构造与神经元毒性和轴突运输缺陷联系起来.
主要方法:
- -交换质谱法 (HDX-MS) 用于检测蛋白质结构.
- 超高分辨率成像和神经元模型可视化Tau在现场.
- 评估轴突运输作为神经元健康的读数.
主要成果:
- 溶性群体具有独特的动态构造,具有区域稳定性和长距离相互作用.
- 与疾病相关的干扰重塑了群,暴露了容易聚合的区域.
- 特定的可溶性Tau构造抑制了轴突运输,与神经元毒性相关.
- 在S262的陶酸化改变了微管相互作用,并抑制了轴突运输.
结论:
- 溶性形状是一种动态的,可调节的状态,先于聚合,编码疾病相关性.
- 异常的形状,特别是PAD暴露,与病理和轴突运输缺陷相关.
- 这项工作为了解早期病机制和开发向治疗提供了一个框架.
相关概念视频
Conformity
48.2K
Conformity is the change in a person’s behavior to go along with the group, even if that person does not agree with the group.
48.2K
Factors Affecting Solubility
37.2K
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:
37.2K
Solubility Equilibria
57.6K
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...
57.6K
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
Physical Properties Affecting Solubility
26.8K
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...
26.8K
Encoding
869
Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
869


