直接和间接的蛋白质相互作用将FUS聚合与希斯连接到ALS/FTD酵母模型中的翻译后修饰失调和生长抑制
Seth A Bennett1,2, Samantha N Cobos1,3, Raven M A Fisher1,2
1Department of Chemistry and Biochemistry, Brooklyn College, Brooklyn, NY 11210, USA.
Journal of fungi (Basel, Switzerland)
|January 24, 2025
概括
像ALS和FTD这样的神经退行性疾病中的FUS蛋白聚合破坏了表观遗传学. 这项研究揭示了FUS是如何导致关键酶的核排斥的,从而导致改变了基因质标记和潜在的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 肌缩侧面硬化症 (ALS) 和前性痴呆症 (FTD) 是致命的神经退行性疾病.
- FUS基因的突变与ALS和FTD有关,导致FUS蛋白错位并聚合.
- FUS蛋白质病变与表观遗传变化有关,包括像H3S10ph,H3K14ac和H3K56ac.ac.这样的减少的基因组修饰.
研究的目的:
- 在酵母模型中调查FUS聚合和表观遗传失调之间的新型联系.
- 确定FUS聚合影响基因组修饰水平的机制.
- 基于表观遗传改变,探索ALS和FTD的潜在治疗点.
主要方法:
- 使用了FUS蛋白质病变的酵母模型.
- 在FUS聚合的存在下,评估了基因素修饰酶 (Ipl1,Rtt109) 的局部化.
- 使用遗传和生化方法确定了FUS结合伙伴 (Nop1, Rrp5).
- 研究了FUS结合伙伴和基因素修饰变化的对细胞表型的影响.
主要成果:
- FUS聚合导致核排除了基因素修饰酶Ipl1和Rtt109.9.
- 发现Ipl1与FUS共局,这表明间接相互作用.
- Nop1和Rrp5被确定为FUS有约束力的合作伙伴,有助于抑制生长.
- Ipl1的核排斥间接导致了H3S10ph和H3K14ac的失调.
- Rtt109错位导致H3K56ac水平降低.
- 但是Nop1 knockdown干扰了这些表观遗传过程.
结论:
- FUS蛋白质病症通过核排除关键的基因组修饰酶驱动表观遗传失调.
- 涉及FUS和特定结合伙伴的间接相互作用调解了这些表观遗传变化.
- 这些发现突显了表观遗传学在ALS/FTD病变发生过程中的作用.
- 在ALS和FTD中确定了潜在治疗干预的新目标 (Nop1, Rrp5, Ipl1, Rtt109).
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