相关实验视频
Updated: Jul 8, 2026

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Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay
Published on: May 25, 2015
一种基于模式的方法,用于识别MicroRNA结合部位及其相应的异质复合体
Kevin C Miranda1, Tien Huynh, Yvonne Tay
1Bioinformatics and Pattern Discovery Group, IBM Thomas J. Watson Research Center, Yorktown Heights, P.O. Box 218, NY 10598, USA.
Cell
|September 23, 2006
概括
RNA22识别了microRNA结合点和目标,而不依赖于保存. 这种方法揭示了在基因组中广泛的微RNA调节,影响了成千上万的基因转录.
科学领域:
- 生物信息学是一种生物信息学.
- 计算生物学 计算生物学
- 分子生物学分子生物学
背景情况:
- 微RNAs (miRNAs) 是关键的转录后调节者.
- 识别miRNA结合部位和点对于理解基因调节至关重要.
- 现有的方法通常依赖于跨物种的保护,限制了它们的范围.
研究的目的:
- 介绍RNA22,一种用于识别miRNA结合点和异构复合体的新型计算方法.
- 评估RNA22与已知的miRNA-目标相互作用的性能.
- 通过实验验证预测的miRNA-目标相互作用,并估计基因组中miRNA调节的程度.
主要方法:
- RNA22首先识别目标序列中的潜在miRNA结合点,然后确定目标miRNA.
- 该方法独立于跨物种的保护,并且对噪音有很强的抵抗力.
- 使用Luciferase测试来实验验证预测的相互作用.
主要成果:
- 在计算上,RNA22准确地识别出大多数已知的miRNA异质复合体.
- 实验验证显示,在226个预测目标中,168个目标出现了显著的抑制 (≥30%).
- 分析表明每个miRNA的miRNA目标数量很大,并且在基因转录中广泛控制miRNA (74-92%).
结论:
- RNA22是发现miRNA结合位点和点的有效工具.
- 很大一部分真核生物基因转录可能在miRNA调节下.
- 这项研究提出了miRNA前体发现的扩展,表明哺乳动物基因组中有数万种miRNA前体.
相关概念视频
MicroRNAs
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
DNA Microarrays
Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
MicroRNAs
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
Proteomics
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...

