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DNA超级卷调节真核转录以基因导向依赖的方式
Ana Karina Morao1, Almira Chervova1, Yuya Zhao2
1Mechanisms of Epigenetic Inheritance, Department of Developmental and Stem Cell Biology, Institut Pasteur, UMR 3738, CNRS, Paris 75015, France.
bioRxiv : the preprint server for biology
|January 13, 2025
概括
在转录过程中产生的DNA超级卷,会影响C.中的邻近基因活性. 伊莱根斯 (elegans) 是一个词. 负超促进分离的基因表达,而正超抑制了融合的基因转录.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 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:
- 转录诱导的扭曲应力改变了DNA超级卷.
- 超级卷可以传播并影响DNA相关的蛋白质活性.
- 在一个基因位点的基因表达可以影响附近的转录事件.
研究的目的:
- 研究DNA超级卷对基因组修饰和邻近基因转录的影响.
- 确定拓聚合酶在调节C中DNA超卷和转录中的作用. 伊莱根斯 (elegans) 是一个词.
主要方法:
- I和II型拓酶的急性耗尽.
- 全球运行测序 (GRO-seq) 用于新生的转录.
- 染色体免疫沉降测序 (ChIP-seq) 用于RNA聚合酶II占用.
- 用于基因表达的RNA测序 (RNA-seq).
- 切割和标记测试用于基因素修饰.
主要成果:
- 拓糖酶枯竭导致全基因组转录变化,基因组修饰变化最小.
- 在C.I.C.中, elegans topoisomerase I对于转录延长至关重要,并且与topoisomerase II部分冗余.
- 负超卷促进转录不同的基因的转录.
- 阳性超可以抑制对汇聚性基因的转录.
- 拓酶枯竭同步表达不同的基因对,但破坏了融合的基因表达.
结论:
- 由转录产生的DNA超级卷,以取决于方向的方式影响邻近的基因转录.
- 负超卷化促进不同基因对的协调表达.
- 过度的阳性超级卷阻碍了转录,破坏了融合基因表达.
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