相关实验视频
Updated: Jul 20, 2026

10:25
Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
在体内证据表明,转录和拼接是由招募机制协调的
L F Jiménez-García1, D L Spector
1Cold Spring Harbor Laboratory, New York 11724.
Cell
|April 9, 1993
概括
细胞拼接因子和蛋白质在腺病毒感染期间迁移到病毒RNA转录部位. 这表明转录和前传递 RNA 拼接是空间和时间相关的核过程.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 病毒学 病毒学
背景情况:
- 在基因表达过程中,前信使RNA (前mRNA) 处理的核组织至关重要.
- 了解转录和拼接的空间和时间协调是分子生物学的一个关键领域.
研究的目的:
- 在腺病毒2感染期间研究HeLa细胞中前mRNA处理因子的核组织.
- 确定病毒RNA局部化和细胞前mRNA处理组件之间的关系.
- 探索调节转录和拼接因子局部化的机制.
主要方法:
- 在被腺病毒感染的HeLa细胞中观察核组织 2.
- 对细胞剪接因子,RNA聚合酶II和异质核核核核蛋白粒子蛋白的局部化分析.
- 试验含有β-热菌素基因部分的短暂转染细胞.
主要成果:
- 观察到细胞拼接因子,RNA聚合酶II和异质核核核糖核蛋白颗粒蛋白重新分布到病毒RNA转录的部位.
- 在感染了β-热菌素基因片段的细胞中观察到类似的再分配模式.
- 在RNA转录,转录和mRNA前拼接因子之间有着密切的联系.
结论:
- 转录和mRNA前拼接是紧密联系在一起的,在细胞核内发生在时间和空间上.
- 招募机制可能会调节转录和拼接因子的局部化,以应对活跃的转录启动.
- 这些发现为控制基因表达的动态核组织提供了洞察力.
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...
Pre-mRNA Processing: 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...
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...

