相关实验视频
Updated: May 27, 2026

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A Reporter Based Cellular Assay for Monitoring Splicing Efficiency
Published on: September 15, 2021
转录性合和不合拼接的单分子成像
Diana Y Vargas1, Khyati Shah, Mona Batish
1Public Health Research Institute, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark, NJ 07103, USA.
Cell
|November 29, 2011
概括
研究人员开发了一种新的成像方法来观察细胞中的RNA拼接. 他们发现拼接可以延迟转录,特别是当内子具有复杂的结构或涉及特定蛋白质的替代拼接事件时.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
背景情况:
- 内子去除 (拼接) 通常发生在基因转录过程中.
- 替代拼接需要精确的时间控制,有时需要延迟拼接.
- 了解拼接的空间和时间调节对于基因表达至关重要.
研究的目的:
- 开发和应用一种高灵敏度的局部RNA成像技术.
- 为了研究前mRNA剪接的细胞内定位和时间.
- 检查二级结构和调控蛋白质如何影响转录和拼接的合.
主要方法:
- 开发一种单分子敏感的局部RNA成像方法.
- 观察活细胞内发生的拼接事件.
- 对内部二次结构和RNA结合蛋白 (Sxl,PTB) 的作用的分析.
主要成果:
- 转录和拼接之间的紧密合可能会被破坏.
- 内部的二次结构可以隔离聚胺系,延迟拼接.
- 涉及Sxl和PTB的替代拼接事件导致拼接与特定内子的转录脱.
- 前面和后面的内子被共转录地拼接,即使扰乱的内子被延迟.
结论:
- 拼接并不总是紧密地与转录相结合,尤其是在特定的监管条件下.
- 拼接的空间和时间动态比以前假设的更灵活.
- 这种灵活性对于调节替代拼接和基因表达至关重要.
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 and RNA Splicing
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...
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...
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...

