星座核的跨物种表观遗传调节 KCNN3转录通过过度饮用乙醇
Rita Cervera Juanes1, Patrick Mulholland2, Audrey Padula
1Atrium Health Wake Forest Baptist.
Research square
|October 4, 2023
概括
影响神经元刺激性的基因KCNN3的表观遗传变化与过度饮酒有关. 在大脑中KCNN3的高甲基化.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学是一种遗传学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 神经元刺激性和过度饮酒受不太了解的遗传和表观遗传因素的影响.
- 由KCNN基因编码的小导电性Ca2+激活K+ (KCa2或SK) 通道,与酒精诱导的神经适应有关.
研究的目的:
- 研究KCNN3DNA甲基化,基因表达和多态性在与酒精摄入相关的功能性适应中的作用.
- 探索KCNN3中的替代促进物如何影响KCa2通道表面的流通和功能.
主要方法:
- 在饮酒和酒精依赖小鼠中对KCNN3进行跨物种分析.
- 核的双硫酸盐测序 accumbens 组织,以分析DNA甲基化.
- 对KCNN3及其转录的基因表达分析.
- 单核酸多态性分析,包括替代性促进物.
主要成果:
- 在饮酒动物的核中发现了KCNN3外子1A的不同甲基化区域.
- 超甲基化KCNN3与编码亚胺不敏感和主导负KCa2异型的替代转录的表达增加相关.
- 在大量饮酒的子中观察到减少KCa2.3通道蛋白质表达.
- 在 KCNN3 异构1 中的多态重复与酒精消耗无关.
结论:
- 涉及替代促进体的KCNN3表观遗传失调影响着accumbens神经元的发射.
- KCNN3高甲基化是一种潜在的关键分子机制,是有害酒精摄入和酒精使用障碍的基础.
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