相关实验视频
Updated: May 26, 2025

Measurements of Physiological Stress Responses in C. Elegans
Published on: May 21, 2020
在氧化应激下微调基因表达的tRNA内衍生小调控RNAs
1Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China; New Cornerstone Science Laboratory, State Key Laboratory of Epigenetic Regulation and Intervention, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences-University of Chinese Academy of Sciences, Shanghai, China.
酵母中的自由tRNA内子 (fitRNAs) 充当小调节性RNA. 这些fitRNAs动态控制信使RNA水平,特别是在氧化应激反应期间,揭示了新的基因调节机制.
科学领域:
- 分子生物学分子生物学
- 在RNA生物学,RNA生物学.
- 基因规则 基因规则
背景情况:
- 内子是基因内的非编码序列.
- 某些tRNA内子在进化过程中被保存,这表明它们具有功能意义.
- 切除的tRNA内核在细胞过程中的特定作用仍然在很大程度上未被探索.
研究的目的:
- 为了研究自由tRNA内子 (fitRNAs) 的功能.
- 为了确定fitRNAs是否作为调节分子.
- 了解fitRNAs在应对细胞压力的作用.
主要方法:
- 在Saccharomyces cerevisiae中识别和表征自由tRNA内子.
- 在氧化应激条件下分析fitRNA动态.
- 评估fitRNAs对信使RNA (mRNA) 水平的影响.
主要成果:
- 诺斯特拉莫和其他人. 在S. cerevisiae中确定了自由tRNA内核 (fitRNAs).
- fitRNAs作为小调节性RNAs起作用.
- 这些分子在应对氧化应激时动态控制mRNA水平.
结论:
- 自由的tRNA内子 (fitRNAs) 是功能调节性RNA.
- fitRNAs在细胞对氧化应激反应中发挥作用.
- 这一发现为了解非编码RNAs的基因调节开辟了新的途径.
相关概念视频
Riboswitches
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
Regulation of Expression at Multiple Steps
RNA Stability
Regulation of the Unfolded Protein Response
Transcription Attenuation in Prokaryotes
There are several different mechanisms used to attenuate transcription. In ribosome mediated...
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...

