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在病症小鼠模型中,TYK2调节水平,酸化和聚合

Jiyoen Kim^1,2, Bakhos Tadros^1,2, Yan Hong Liang^1,2

¹Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.

Nature neuroscience

|November 11, 2024

概括

氨酸激酶2 (TYK2) 酸化陶蛋白,促进其聚合并阻碍其清除. 抑制TYK2可能会减少像阿尔茨海默氏症这样的神经退行性疾病中的病态积.

科学领域:

神经科学是一个神经科学.
细胞生物学细胞生物学
生物化学生物化学

背景情况:

阿尔茨海默氏症和相关的陶病症涉及异常的陶蛋白积累.
从可溶性形式中聚合的分子触发因素在很大程度上是未知的.
氨酸激酶2 (TYK2) 之前被确定为tau水平的潜在调节者.

研究的目的:

研究TYK2在陶酸化和聚合中的作用.
为了确定TYK2活动是否影响tau清除机制.
为了评估TYK2作为治疗病的治疗标.

主要方法:

基因选用于识别调节剂.
使用人类细胞进行体外酸化试验.
对聚和自清除的分析.
使用P301S转基因小鼠进行体内研究.

主要成果:

TYK2在氨酸29 (Tyr29) 中酸化,使其稳定并促进聚合.
通过TYK2介导的Tyr29酸化损害了自性清除.
在小鼠模型中抑制Tyk2减少了总和病理性tau,并缓解了质症.

结论:

在Tyr29中通过TYK2介导的陶酸化是病理性陶积累的关键步骤.
向TYK2提供了一种潜在的治疗策略,用于降低阿尔茨海默氏症和其他病的毒性.

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