Novel_circ_0004013 向 miR-29a-3p 通过 RNA-seq 分析在 miR-29a 小鼠模型中影响与年龄有关的听力损失
Mulan Li1, Bingqian Li1, Shuli Wang1
1Hearing and Speech Rehabilitation Institute, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai, China.
Experimental gerontology
|April 19, 2025
概括
循环RNAs (circRNAs) 在与年龄相关的听力损失 (ARHL) 中发挥作用. 新型circ_0004013调节miR-29a-3p,影响听觉细胞中的氧化应激和亡.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
背景情况:
- 与年龄相关的听力损失 (ARHL) 是一种常见的感觉神经障碍.
- 了解ARHL的生物机制对于开发治疗方法至关重要.
- 循环RNAs (circRNAs) 越来越多地被认为是它们在各种生物过程中的调节作用.
研究的目的:
- 研究circRNAs在与年龄相关的听力损失 (ARHL) 病变发生中的作用.
- 识别涉及ARHL的特定circRNA及其分子相互作用.
- 探索circRNAs,miR-29a和细胞过程之间的关系,如氧化应激和听力损失中的亡.
主要方法:
- 与野生类型小鼠相比,转录组测序用于分析miR-29a淘汰赛小鼠中的circRNA表达特征.
- 双 luciferase 试验证实了 novel_circ_0004013 和 miR-29a-3p.p. 的目标结合关系.
- 光 in situ 杂交 (FISH) 用于定位耳细胞和组织中的circRNA表达.
- 西方斑点测试用于评估氧化应激和亡的水平.
- 救援试验验证 novel_circ_0004013 在调节 miR-29a-3p 活动中的功能作用.
主要成果:
- 在miR-29a淘汰赛和野生类型小鼠之间确定了12个差异表达的circRNA.
- Novel_circ_0004013被确定为miR-29a-3p的直接目标,在miR-29a淘汰小鼠中表达更高.
- 在HEI-OC1细胞中降低了氧化应激和亡.
- Knockdown 的 miR-29a-3p 增加了氧化应激和亡,而 novel_circ_0004013 通过 miR-29a-3p 调节加剧了这些效应.
结论:
- Novel_circ_0004013在与年龄相关的听力损失 (ARHL) 的分子机制中发挥着重要作用.
- novel_circ_0004013与miR-29a-3p之间的相互作用会影响耳细胞中的氧化应激和亡.
- 这些发现为了解ARHL病原体和潜在的治疗点提供了新的理论基础.
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