相关实验视频
Updated: May 10, 2025

08:53
A Reporter Based Cellular Assay for Monitoring Splicing Efficiency
Published on: September 15, 2021
2.6K
解决U5 snRNP结合体病变的组织特异性
Rahmat Azhari Kemal1,2, Raymond T O'Keefe1
1Division of Evolution, Infection and Genomics, Faculty of Biology, Medicine, and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom.
Frontiers in cell and developmental biology
|April 23, 2025
概括
在U5小核核核糖核蛋白 (snRNP) 蛋白质中的致病变体会导致结合体病变,导致特定的疾病,如面形或视网膜色素炎. 研究模型解释了这种特异性,并建议使用iPSC和代谢学来进行未来研究.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学是一种遗传学.
- 发展生物学 发展生物学
背景情况:
- 基因表达必不可少的剪接是由剪接体催化,其核心是U5小核核核糖核蛋白 (snRNP).
- 在U5 snRNP核心蛋白中的致病变体导致结合体病变,这是一种具有特定临床表现的疾病类别.
- 其中的例子包括与TXNL4A/EFTUD2变异相关的面形以及与PRPF8/SNRNP200变异相关的视网膜色素炎.
研究的目的:
- 探索U5 snRNP变体引起的结合体病变的特定临床表现背后的分子机制.
- 突出当前的研究,并提出未来的方向,以了解这些疾病.
主要方法:
- 审查现有研究的spliceosomopathies和U5 snRNP变体.
- 讨论用于研究疾病特异性的细胞和动物模型.
- 关于未来研究途径的建议,包括iPSC衍生模型,转录组分析,互动组研究和代谢学.
主要成果:
- 细胞和动物模型成功地复制了在人类结合体病变中观察到的临床特异性.
- 这些模型提供了关于U5 snRNP变异如何导致不同的疾病表型的见解,尽管结合体具有无处不在的作用.
- 研究前景确定了未来研究的关键领域.
结论:
- 了解结合体病变的特异性需要复杂的模型,这些模型可以重复人类疾病的表型.
- 未来的研究将转录组学,蛋白质组学和代谢组学整合到患者衍生的iPSC模型中,有望为阐明U5 snRNP变体的病原性提供希望.
- 研究结合体蛋白质复合体及其相互作用体可以揭示疾病机制的新见解.
相关概念视频
RNA Splicing
55.7K
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...
55.7K
Alternative RNA Splicing
20.8K
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...
20.8K
Nonsense-mediated mRNA Decay
10.3K
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
10.3K
Translation
140.9K
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
140.9K
RNA Editing
8.8K
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...
8.8K
Pre-mRNA Processing: RNA Splicing
5.1K
5.1K

