相关实验视频

Updated: Jun 28, 2025

Sample Preparation for Mass Spectrometry-based Identification of RNA-binding Regions

Sample Preparation for Mass Spectrometry-based Identification of RNA-binding Regions

Published on: September 28, 2017

对氨酸和脂质膜具有特异性的双功能RNA的选择

Teresa Janas¹, Karolina Sapoń¹, Tadeusz Janas¹

¹Institute of Biology, University of Opole, Poland.

|April 22, 2024

概括

研究人员开发了一种双功能RNA吸收体,可以结合氨酸和脂质膜,这支持了RNA可以通过与蛋白质和膜相互作用,促进自身进入细胞外囊泡的假设.

科学领域:

分子生物学分子生物学
生物化学生物化学
细胞生物学细胞生物学

背景情况:

控制选择性RNA包装成细胞外囊泡 (EVs) 的机制在很大程度上是未知的.
了解RNA-EV的相互作用对于开发有针对性的药物输送系统和诊断工具至关重要.

研究的目的:

研究RNA分子与RNA结合蛋白 (RBPs) 中的氨酸残留物和脂质膜同时结合的潜力.
展示RNA局部化到EVs中的机制.

主要方法:

对氨酸和脂质囊泡特异的双功能RNA 10Arg 胺体的构造.
在神经母细胞细胞中使用Förster共振能量转移 (FRET) 显微镜对RNA 10Arg-脂质相互作用的可视化.
应用选择放大 (SELEX) 方法与合核酸池,以产生增强的体.

主要成果:

经过工程设计的RNA 10Arg 受体证明可以结合氨酸和脂质体.
FRET显微镜证实了RNA 10Arg对细胞内的脂质的特定偏好.
选择放大产生RNA 10Arg(D) 序列,与原始阿胺相比,与氨酸和脂质体的结合亲和度有所改善.

结论:

这项研究提供了能够通过氨酸和膜脂结合RBPs的双特异性体的证据.
这种双结合能力支持一种RNA可以直接促进自身加载到外体和其它EVs的模型.
这些发现为细胞中RNA输出背后的分子机制提供了新的视角.

关键词:

RNA结合蛋白质是一种RNA结合蛋白质.两种特异性的RNA.外基因组是外基因组的组成部分.脂质体是一种脂质体.膜膜膜膜膜膜膜漂浮艇漂浮艇漂浮艇是一个

更多相关视频

Novel RNA-Binding Proteins Isolation by the RaPID Methodology

Novel RNA-Binding Proteins Isolation by the RaPID Methodology

Published on: September 30, 2016

MS2-Affinity Purification Coupled with RNA Sequencing in Gram-Positive Bacteria

MS2-Affinity Purification Coupled with RNA Sequencing in Gram-Positive Bacteria

Published on: February 23, 2021

相关概念视频

Leaky Scanning

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...

Types of RNA

Types of RNA

Overview
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 the regulation of 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...

Riboswitches

Riboswitches

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...

Nucleic Acids

Nucleic Acids

Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...

RNA Interference

RNA 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...

RNA Editing

RNA Editing

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...