在面发育过程中,PRMT1-SFPQ调节了内质保留,以控制矩阵基因表达.
bioRxiv : the preprint server for biology
|November 26, 2025
概括
蛋白质氨酸甲基转移酶1 (PRMT1) 通过控制拼接来调节面发育. PRMT1和SFPQ通路通过头骨神经细胞的内置保留触发的无意中介衰变调节矩阵基因表达.
科学领域:
- 发育生物学 发展生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 结合体病变会影响面发育,但机制尚不清楚.
- 氨酸甲基化是拼接因子的关键翻译后修改.
- 蛋白质氨酸甲基转移酶1 (PRMT1) 对于面发育至关重要.
研究的目的:
- 研究PRMT1在神经细胞 (CNCCs) 内拼接调节中的作用.
- 阐明PRMT1对面发育影响的分子机制.
- 确定 CNCC 中 PRMT1 调节的下游目标和路径.
主要方法:
- 在缺乏PRMT1的CNCC中分析拼接机制.
- 量化内部保留和mRNA丰度的量化.
- 使用蛋白质组学和遗传方法识别PRMT1基质.
- 在CNCC中确定基质的耗尽研究.
主要成果:
- 在CNCC中PRMT1缺乏会增加矩阵基因中的内置保留,引发无意义中介衰变 (NMD) 和减少矩阵mRNA.
- SFPQ被确定为对面发育至关重要的PRMT1基质.
- SFPQ枯竭的副本是PRMT1的删除,影响矩阵,Wnt信号传递和神经元基因表达.
- 基因长度被确定为SFPQ调节基因的特征.
结论:
- PRMT1-SFPQ通路通过内质保留触发的NMD.通过CNCCs调节矩阵基因表达.
- 这条通路对于正常的面发育至关重要.
- 这些发现提供了对影响面部区域的结合体病变的分子洞察力.
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