基础科学和病原发生学
1GSK, Collegeville, PA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
概括
降低的progranulin (PGRN) 水平与神经退行性疾病有关. 一种抗索尔提林抗体 (GSK5862611) 增加了PGRN水平,在细胞模型中逆转了TDP43 G298S变异效应,表明潜在的ALS疗法.
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
- 分子生物学分子生物学
背景情况:
- 降低的progranulin (PGRN) 水平与前性痴呆症 (FTD),阿尔茨海默病 (AD),帕金森病 (PD) 和肌缩侧面硬化症 (ALS) 有关.
- 索尔提林 (SORT1) 中介于PGRN的吸收和降解;抑制SORT1会增加细胞外PGRN.
- GSK5862611是一种抗SORT1抗体,旨在提高细胞外PGRN水平.
研究的目的:
- 评估用GSK5862611增强PGRN水平是否可以逆转与TDP43 G298S风险变异相关的表型.
- 在神经退行性疾病的细胞模型中评估抗sortilin抗体的治疗潜力.
主要方法:
- 使用人类诱导多能干细胞 (hiPSC) 衍生的运动神经元和具有TDP43 G298S风险变异的星细胞.
- 细胞与野生类型或GRN编辑的微质细胞共同培养,并用GSK5862611,同型控制或复合PGRN进行处理.
- 评估了对神经元长度,TDP43错位化以及PGRN,神经丝光链 (NfL) 和状纤维酸性蛋白 (GFAP) 的水平的影响.
主要成果:
- 重组PGRN和GSK5862611治疗挽救了神经元长度损失和运动神经元中的TDP43错位.
- 在三种作物中,GSK5862611以剂量依赖的方式增加了细胞外PGRN,并减少了TDP43错位.
- 在TDP43 G298S细胞模型中,GSK5862611还降低了NfL和GFAP水平.
结论:
- 用GSK5862611阻断索尔提林受体会增加细胞外PGRN,减少TDP43错位,并降低NfL/GFAP水平.
- 这些发现支持抗索尔提林抗体作为治疗ALS和相关TDP43蛋白质病变的治疗策略的潜力.
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