一个可视报告系统,用于分析内源植物基因的小RNA触发的局部和系统性沉默
Adriana E Cisneros1, Alberto Carbonell2
1Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València), Valencia, Spain.
Methods in molecular biology (Clifton, N.J.)
|May 16, 2025
概括
研究人员开发了一种视觉系统来研究植物小RNA (sRNA). 该系统追踪sRNA如何在本地和系统上触发基因沉默,帮助发现影响这一过程的因素.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因沉默机制 基因沉默机制
- 通过RNA干扰 (RNAi) 途径.
背景情况:
- 植物小RNAs (sRNAs) 通过沉默目标信使RNAs (mRNAs) 来调节基因表达.
- sRNAs可以在细胞内部局部起作用或移动到遥远的组织,以诱导全身基因沉默.
- 鉴定控制sRNA诱导沉默和传播的因素是具有挑战性的,因为有限的实验系统.
研究的目的:
- 建立一个视觉报告系统,用于研究由植物sRNAs诱导的局部和全身基因沉默.
- 为了促进基因,分子和环境因素的识别,控制sRNA沉默活动.
主要方法:
- 人工小RNA (sRNA) 结构的农业透到尼科蒂亚娜本塔米亚纳植物中.
- 使用尼科蒂亚纳坦亚纳硫 (NbSu) 基因作为基因沉默的视觉记者.
- 观察和特征视觉现象型 (漂白和化),表明局部和全身沉默.
主要成果:
- 农业透区域表现出强烈,均的漂白,表明有效的本地基因沉默.
- 形,非农业透的叶子显示近静脉化,证明了全身基因沉默.
- 视觉表型为sRNA诱导的沉默及其传播提供了明确的读数.
结论:
- 开发的视觉报告员系统有效地可视化了由植物sRNAs触发的本地和系统基因沉默.
- 这个系统提供了一个强大的工具,用于剖析sRNA介导基因沉默背后的调节机制.
- 它将加速发现控制植物sRNA活动的诱导和系统传播的因素.
相关概念视频
01:23RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
03:21RNA-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
02:15Experimental RNAi
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
02:30Small interfering RNAs (siRNA)
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...