相关实验视频
Updated: Jun 20, 2026

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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
Published on: October 9, 2014
通过与SR相关的蛋白质来调节脊椎动物神经系统的替代拼接和发展
John A Calarco1, Simone Superina, Dave O'Hanlon
1Banting and Best Department of Medical Research, Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College Street, Toronto, Ontario M5S 3E1, Canada.
Cell
|September 10, 2009
概括
研究人员发现了一种新的蛋白质,神经特异性SR相关蛋白质100kDa (nSR100),对大脑发育至关重要. 这种蛋白质调节替代拼接,这个过程对于在脊椎动物中创建复杂的神经系统至关重要.
科学领域:
- 分子生物学分子生物学
- 神经科学是一个神经科学.
- 进化生物学 进化生物学
背景情况:
- 替代拼接驱动蛋白质组复杂性,特别是在哺乳动物的神经系统中.
- 控制神经系统特定替代拼接的机制在很大程度上是未知的.
研究的目的:
- 确定神经特异性替代拼接的新型调节剂.
- 阐明这些调节器在脊椎动物神经系统中的功能和进化意义.
主要方法:
- 采用了全基因组计算和表达特征分析策略.
- / (SR) 重复拼接因子的识别和特征,nSR100.
- 用细胞培养和斑马鱼模型进行功能研究,以评估nSR100破坏的影响.
主要成果:
- 发现了一种新的神经特异性SR重复拼接因子nSR100.
- nSR100调节了参与神经分化的基因中的脑特异性替代外显子网络.
- nSR100 影响了聚皮里米丁管结合蛋白水平,并与目标转录物相互作用.
- 破坏nSR100会损害神经细胞在体外和体内分化.
结论:
- nSR100是神经特异性替代拼接的关键调节器.
- nSR100的进化有助于脊椎动物神经系统的功能复杂性.
- nSR100在神经细胞分化中起着至关重要的作用.
相关概念视频
Alternative RNA Splicing
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...
Alternative RNA Splicing
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...
RNA Splicing
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...
RNA Splicing
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...
Chromatin Structure Regulates pre-mRNA Processing
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...
What is Gene Expression?
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then processed and...

