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转化生长因子β激活蛋白1 (TAK1) 调节与年龄相关的听力损失中的亡
Hanjing Wang1,2,3,4,5, Yayun Lv2,3,4,5, He Zhao2,3,4,5
1School of Clinical Medicine, Shandong Second Medical University, Weifang, Shandong, People's Republic of China.
Aging cell
|February 28, 2025
概括
转化生长因子β激活蛋白1 (TAK1) 缺乏会促进细胞死亡途径 - - 亡,从而导致与年龄相关的听力损失. 抑制亡可能为听力损失提供治疗策略.
科学领域:
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 与年龄相关的听力损失 (ARHL) 是与炎症相关的重大健康问题.
- 转化生长因子β激活蛋白1 (TAK1) 是炎症信号和细胞死亡通路的关键上游调节者.
- 在ARHL的基础上,TAK1在耳细胞死亡机制中的确切作用仍然不清楚.
研究的目的:
- 研究TAK1在炎症驱动的与年龄相关的听力损失中的作用.
- 为了阐明TAK1介导的尾细胞死亡的机制.
- 探索ARHL的潜在治疗点.
主要方法:
- 使用了DBA/2J鼠标模型和HEI-OC1细胞系.
- 通过组织学和听觉唤起的大脑干反应 (ABR) 值来评估耳损伤和听觉功能.
- 在HEI-OC1细胞和分析的亡途径标记物 (RIPK3,MLKL,NF-κB,Caspase8) 中操纵了TAK1表达 (敲击和过度表达).
- 向TAK1突击细胞施用了亡抑制剂.
主要成果:
- DBA/2J小鼠在16周时表现出显著的耳损伤和升高的ABR值.
- 降低TAK1mRNA水平与老年小鼠亡的增加相关.
- 在HEI-OC1细胞中TAK1敲击激活了亡,上调RIPK3和MLKL,并降低NF-κB和Caspase 8.
- TAK1的过度表达抑制了亡.
- 死亡抑制剂逆转了HEI-OC1细胞中TAK1敲击诱导的损伤.
结论:
- TAK1在尾中起着保护性作用,防止尾死亡.
- TAK1介导的亡病与与年龄相关的听力损失的发病有关.
- 向亡可能是ARHL的可行的治疗策略.
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