在拼接或转录因子域中WT1的亚核定位受替代拼接的调节
S H Larsson1, J P Charlieu, K Miyagawa
1Medical Research Council Human Genetics Unit, Western General Hospital, Edinburgh, Scotland.
Cell
|May 5, 1995
概括
威尔姆斯的瘤抑制剂WT1蛋白,此前已知用于基因转录,也与RNA拼接机械相互作用. 这表明WT1在RNA处理和基因调节方面都有双重作用.
科学领域:
- 分子生物学分子生物学
- 发育生物学 发展生物学
- 癌症遗传学 癌症遗传学
背景情况:
- WT1基因是一个关键的瘤抑制剂,涉及泌尿器官发育和威尔姆斯瘤病原性.
- WT1编码了具有克鲁佩尔型指的四种蛋白质异型,主要与与生长相关基因的转录调节有关.
研究的目的:
- 为了研究超出转录控制的WT1蛋白的亚细胞局部化和功能相互作用.
- 探索WT1在RNA转录后处理中的潜在作用.
主要方法:
- 免疫沉测试检测蛋白质与蛋白质相互作用.
- 在胎儿组织和细胞系中进行局部化研究.
- 基于替代拼接的COS细胞表达研究来分析WT1异形局部化.
主要成果:
- 发现WT1蛋白与胎儿脏,丸和表达细胞系中的剪接因子进行同位化.
- 特定的WT1异型被证明与拼接体和卷曲体组件直接关联.
- 在WT1指区域的替代拼接影响了核定位,将WT1指向拼接因子或DNA.
结论:
- WT1蛋白质异型体参与RNA转录后处理,特别是与拼接机械相互作用.
- WT1表现出双重功能,在RNA处理和转录调节中起作用.
- 这些发现扩大了WT1已知的功能,超出了它在基因转录中的既定作用.
相关概念视频
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...
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...
Regulation of Nuclear Protein Sorting
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
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...


