通过网络分析,研究RNA结合蛋白Ssd1在阳性积分症耐受性中的作用
bioRxiv : the preprint server for biology
|August 2, 2024
概括
一个关键的RNA结合蛋白质Ssd1通过管理翻译应激,帮助酵母细胞耐受积体. 这项研究确定了参与该过程的新RNA结合蛋白,揭示了在染色体数量变化期间对细胞稳定性至关重要的网络.
科学领域:
- 细胞生物学 细胞生物学
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
背景情况:
- RNA结合蛋白 (RBPs) 在整个生命周期中对RNA调节至关重要.
- 众所周知,Ssd1是Saccharomyces cerevisiae中的一个RBP,它会影响形积分症的耐受性,但其确切的功能尚不清楚.
研究的目的:
- 通过基于网络的方法阐明Ssd1在动脉积症耐受性中的机制性作用.
- 识别与Ssd1相互作用并促进形积分症耐受性的新型RBPs.
主要方法:
- 使用基于网络的策略来识别具有与Ssd1.1重叠的mRNA目标的RBP.
- 基因分析涉及创建具有不同基因型 (euploid/aneuploid,SSD1/ssd1Δ,RBP删除/野生型) 的酵母菌株.
- 将遗传相互作用数据与全球过度表达屏幕集成.
主要成果:
- 在14个研究的RBP中删除了10个,在野生类型和/或ssd1Δ细胞中显著改变了对阳积分 (XII染色体重复) 的敏感性.
- 几个RBPs显示了与SSD1的遗传相互作用,在形积分症的背景下.
- 该研究确定了参与转化抑制和P体形成的RBPs网络,表明它们在阳积体耐受性中的作用.
结论:
- 新的RBPs有助于酵母菌对血管积分症的耐受性.
- Ssd1的功能是通过减轻形细胞中与翻译相关的压力来发挥作用.
- 这些发现支持一个模型,Ssd1和相关的RBPs在积分期保持细胞平衡.
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