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小型非编码RNA1-1 作为自的肋骨调节剂
Rastislav Horos1, Magdalena Büscher1, Rozemarijn Kleinendorst1
1European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.
Cell
|February 19, 2019
概括
密室RNAs (vtRNAs) 直接结合自受体p62,调节选择性自. 这种RNA-蛋白相互作用控制p62
科学领域:
- 分子生物学
- 细胞生物学
- 核糖核酸生物学
背景情况:
- 密室RNAs (vtRNAs) 是具有不清楚分子功能的小型非编码RNA.
- 在药物耐药性,细胞亡和病毒复制中涉及vtRNAs.
- 在细胞过程中vtRNAs的确切作用仍然在很大程度上是未知的.
研究的目的:
- 在细胞调节中研究RNA的分子功能.
- 确定保险库RNA与自受体p62之间的相互作用.
- 阐明vtRNAs调节自的机制.
主要方法:
- 检测vtRNA-p62结合的同时免疫沉测试.
- 使用LNA对vtRNA1-1进行过度表达和倒置研究.
- 细胞饥饿实验以评估自流.
- 对具有受损vtRNA结合的p62突变的分析.
主要成果:
- 密室RNA直接与人类和小鼠细胞的自受体sequestosome-1/p62结合.
- 过度表达的vtRNA1-1抑制了p62依赖的自,而倒置则增强了它.
- 细胞饥饿会降低vtRNA1-1水平并诱导自.
- 无法结合vtRNA的p62突变体呈现出增加的同类聚合和自效应因子相互作用.
结论:
- 通过结合p62并调节其寡合化,vtRNA1-1直接调节选择性自.
- 这项研究揭示了RNA介导蛋白质功能控制的新机制.
- 密室RNAs代表了选择性自的新类调节剂.
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