药理伴奏剂通过减弱持续的PERK激活来减轻噪音引起的听力损失
Ji Won Hong1, Hyehyun Min2,3, Soomin Kim2,3
1Department of Pharmacology, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
概括
研究了噪音引起的听力损失 (NIHL) 的机制. 展开蛋白质响应 (UPR) 调制,特别是PERK和CHOP通路,显示出预防和治疗NIHL的前景.
科学领域:
- 耳鼻神经科学 耳鼻神经科学
- 细胞生物学 细胞生物学
- 听力损失的分子机制
背景情况:
- 噪音引起的听力损失 (NIHL) 涉及尾中的复杂细胞反应.
- 了解临时值转移 (TTS) 和永久值转移 (PTS) 之间的差异对于开发治疗至关重要.
- 控制听力恢复或不恢复的精确机制在很大程度上是未知的.
研究的目的:
- 在TTS和PTS小鼠模型中对耳转录组变化进行比较分析.
- 在NIHL中阐明细胞内网膜应激 (ER应激) 和未折叠蛋白质反应 (UPR) 的作用.
- 为了确定NIHL的潜在治疗目标.
主要方法:
- 在TTS和PTS小鼠模型中对耳转录组进行纵向比较分析.
- 研究了噪音诱导的ER应力和UPR激活.
- 使用PERK抑制剂和药理伴侣来调节UPR通路.
主要成果:
- 暴露于噪音会激活ER压力和UPR.
- 在TTS之后,UPR的PERK途径得到了解决,但在PTS中仍然活跃.
- 在PTS之后,毛发细胞中的CHOP,一种前进性亡因子,被上调.
- 抑制PERK会影响TTS恢复,同时抑制持续的PERK激活或减少CHOP辅助的PTS恢复.
结论:
- 持续的PERK激活和CHOP诱导是永久NIHL的关键因素.
- 调节UPR,特别是PERK和CHOP通路,为NIHL提供了一个潜在的治疗策略.
- 调查结果为NIHL机制和预防提供了关键的见解.
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