相关实验视频
Updated: Jul 9, 2025

08:25
Identification of Circular RNAs using RNA Sequencing
Published on: November 14, 2019
12.3K
ESRP1控制着一个大量的多核子环RNA的生物发生和功能
Dawei Liu1, B Kate Dredge1, Andrew G Bert1
1Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, SA 5000, Australia.
Nucleic acids research
|November 28, 2023
概括
一种新型的循环RNA,circDOCK1(2-27),非常丰富,在上皮层-介质细胞过渡 (EMT) 过程中受到调节. 它的形成由ESRP1控制,通过改变DOCK1mRNA的产生和抑制迁移来抑制细胞运动.
科学领域:
- 分子生物学分子生物学
- 在RNA生物学,RNA生物学.
- 细胞生物学 细胞生物学
背景情况:
- 循环RNAs (circRNAs) 通常是由罕见的背接事件形成的.
- 一些circRNAs是丰富的和调节,在细胞过程中发挥重要作用.
研究的目的:
- 研究circDOCK1的调节,生物发生和功能.
- 阐明ESRP1在circRNA形成中的作用及其对表皮-介质细胞转换 (EMT) 的影响.
主要方法:
- 在HITS-CLIP分析中,
- 通过CRISPR进行的删除.
- 靠近依赖生物化 (BioID) 试验.
- 在X射线晶体学.
主要成果:
- circDOCK1(2-27) 是丰富的,在EMT期间受到高度调节,其形成取决于ESRP1.
- 通过转移DOCK1mRNA的产生和直接抑制迁移,circDOCK1(2-27) 合成抑制了细胞运动.
- ESRP1在内子1中结合一个GGU重复,调节circDOCK1的生物合成.
- ESRP1的结构显示,它通过芳香口袋与GGU图案结合.
结论:
- circDOCK1(2-27) 是在EMT期间细胞运动的关键调节者.
- 通过特定的RNA结合相互作用,ESRP1控制circDOCK1(2-27) 的生物发生.
- 了解circRNA调节提供了关于癌症进展和治疗策略的见解.
相关概念视频
Regulation of the Unfolded Protein Response
2.4K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.4K
Alternative RNA Splicing
21.2K
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...
21.2K
RNA Splicing
56.4K
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
56.4K
Ribosomal RNA Synthesis
13.2K
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
13.2K
Directing Proteins to the Rough Endoplasmic Reticulum
7.3K
The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
7.3K
Chromatin Structure Regulates pre-mRNA Processing
7.0K
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
The chromatin structure, especially...
7.0K

