双相细胞反应是由四氨酸介导的功能障碍和溶解体的溶解体清除引发的
Zhe Yang1, Tomoki Takahashi2, Ayase Hoshino3
1Doctoral Program in Life Science Innovation, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki 305-8577, Japan.
ACS chemical biology
|June 16, 2025
概括
天然化合物四氨酸会触发溶解体,以清除受损的溶解体. 这种双重作用首先破坏了 lysosomal 功能,然后恢复了细胞平衡,提供了潜在的治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 溶解体对于细胞降解和恒常状态至关重要.
- lysophagy,通过自去除受损的 lysosomes,对于细胞质量控制至关重要.
- lysosomal 功能障碍与神经退行性疾病有关,使 lysophagy 调节者成为潜在的药物候选者.
研究的目的:
- 为了研究四氨酸的作用,一个bis-基素化物,在lysophagy.
- 阐明四氨酸调节 lysosomal 功能和恒常的机制.
- 探索四氨酸作为潜在的治疗药物,治疗涉及溶酶体功能障碍的疾病.
主要方法:
- 一个光探针的合成,通过通过聚乙烯糖醇链接器将四二烯与二甲基结合.
- 流细胞测量以确认探针的细胞吸收.
- 器官染色测试以确认探针的溶酶体同位.
- 测量 lysosomal pH 和 mCherry 标记的 galectin-3 (一种 lysophagy 标记物) 的水平.
- 对转录因子EB (TFEB) 酸化和核转位的分析.
主要成果:
- 泰特兰地林诱导溶解体,清除哺乳动物细胞中受损的溶解体.
- 一个合成的光探针证实了四氨酸的向是溶酶体.
- 泰特兰地林导致了溶酶体pH的暂时升高.
- lysophagy 标记蛋白 (mCherry-galectin-3) 水平暂时增加.
- 泰特兰地林诱导了TFEB脱和核转位,促进了溶酶体生物发生.
结论:
- 氨酸表现出双相作用:最初扰乱 lysosomal 功能,然后通过 lysophagy 和 lysosomal 生物生成促进细胞平衡.
- 这种双重机制使得四氨酸与其他溶酶体调节剂有所区别.
- 二作为治疗疾病的治疗药物显示出有前途的前景,这些疾病与溶解体功能障碍有关.
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