相关实验视频
Updated: Jan 10, 2026

12:29
mRNA Interactome Capture from Plant Protoplasts
Published on: July 28, 2017
9.5K
在Arabidopsis和大米中RNA修饰的协同功能
Ancheng Ma1,2,3, Shuaibin Wang1, Xinxi He1
1Tobacco Research Institute of Technology Centre, China Tobacco Hunan Industrial Corporation, Changsha, 410014 China.
aBIOTECH
|November 28, 2025
概括
组合的mRNA修改如N4-乙基丁 (ac4C) 和N6-甲基氨酸 (m6A) 在植物中不同影响RNA稳定性和翻译. 了解这些表观遗传机制对于作物弹性至关重要.
科学领域:
- 植物表观遗传学 植物表观遗传学
- 转录后的监管 转录后的监管
- RNA代谢的RNA代谢过程
背景情况:
- 表观遗传学调节涉及影响基因表达的组素和RNA修饰.
- 已知DNA甲基化,染色质修饰和mRNA修饰之间的相互作用,但RNA修饰相互作用尚不清楚.
- 了解RNA修饰交叉是提高作物弹性和生产力的关键.
研究的目的:
- 研究阿拉比多普西斯和大米中三种关键mRNA修饰的同时发生和功能相互作用:N4-乙基丁 (ac4C),N6-甲基氨酸 (m6A) 和5-甲基氨酸 (m5C).
- 阐明这些修饰在RNA结构,稳定性和转化中的特定物种作用.
- 为了揭示植物mRNA修饰的组合性调节代码.
主要方法:
- 在Arabidopsis thaliana和Oryza sativa之间对mRNA修饰的比较分析.
- 研究ac4C,m6A和m5C对RNA二次结构和稳定性的影响.
- 以特定物种的方式评估这些修改对转化效率的影响.
主要成果:
- ac4C,m6A和m5C经常在相同的转录中与不同的空间分布共存.
- m6A增强了ac4C介导的RNA二次结构不稳定,促进RNA稳定性,特别是在聚类时.
- 在Arabidopsis中,ac4C增强翻译,由m6A以距离依赖的方式放大;在大米中,m6A的效果与距离无关. m5C在情境上调节m6A的效应.
结论:
- 这项研究揭示了结合性mRNA修饰的动态调节代码与特定物种的转录后调节机制.
- 研究结果提供了关于RNA修饰的复杂相互作用的见解,这对于推进农业生物技术至关重要.
- 通过这些表观遗传相互作用了解植物RNA功能,可以增强作物特征.
相关概念视频
Riboswitches
9.5K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
9.5K
RNA Editing
9.7K
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
9.7K
Experimental RNAi
7.2K
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...
7.2K
Alternative RNA Splicing
24.6K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
24.6K
RNA Stability
35.6K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
35.6K
Types of RNA
8.9K
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
8.9K

