高分辨率分析显示了转基因的结合转录和转化调节
bioRxiv : the preprint server for biology
|December 9, 2024
概括
更强大的合成促进剂通过增强转录和翻译来增加RNA和蛋白质水平. 基因元素,如多基化信号和编码序列显著影响表达特征,对于强大的基因电路设计至关重要.
科学领域:
- 分子生物学分子生物学
- 合成生物学 合成生物学
- 生物技术是生物技术.
背景情况:
- 细胞命运是由RNA和蛋白质度决定的.
- 基因电路设计需要了解遗传组件如何影响mRNA和蛋白质水平.
- 合成生物学依赖于从遗传组件中可预测的基因表达.
研究的目的:
- 为了同时测量单细胞中的mRNA和蛋白质水平,用于合成促进剂.
- 调查常见的合成遗传成分如何影响转录和翻译效率.
- 开发一个框架来量化转基因表达特征,并比较合成和原生基因调节.
主要方法:
- 在单细胞中同时测量mRNA和蛋白质水平,使用杂交链反应光现场杂交 (HCR Flow-FISH).
- 使用长读直接RNA测序对全长mRNA异型的表征.
- 对常用的合成促进剂的表达特征进行量化.
主要成果:
- 促进者影响mRNA丰度和翻译速率;更强的促进者产生更高的RNA和蛋白质水平.
- 基因组集成保留了促进体强度,但多基化信号和编码序列显著改变了mRNA和蛋白质配置.
- 长读测序揭示了转基因单元的统一mRNA异型,尽管蛋白质表达的变化.
结论:
- 合成遗传成分对转录和翻译机制产生重大影响.
- 一个用于量化转基因表达的新型框架使得合成和本地基因调节的比较成为可能.
- 这项工作为建立更强大的转基因系统和基因电路提供了洞察力.
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