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相关概念视频

RNA Splicing01:32

RNA Splicing

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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...
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Alternative RNA Splicing02:18

Alternative RNA Splicing

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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...
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Chromatin Structure Regulates pre-mRNA Processing02:41

Chromatin Structure Regulates pre-mRNA Processing

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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...
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Pre-mRNA Processing: RNA Splicing01:36

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MAPK Signaling Cascades01:07

MAPK Signaling Cascades

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Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
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What is Gene Expression?01:36

What is Gene Expression?

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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...
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相关实验视频

Updated: Sep 13, 2025

Using the E1A Minigene Tool to Study mRNA Splicing Changes
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Using the E1A Minigene Tool to Study mRNA Splicing Changes

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在神经发育过程中,SRC激酶异型调节mRNA分裂.

Alastair R Pizzey1, Laura C West1, Samuel J Elberfeld1

  • 1Department of Biology and York Biomedical Research Institute, University of York, Heslington, York YO10 5DD, United Kingdom.

The Journal of neuroscience : the official journal of the Society for Neuroscience
|August 1, 2025
PubMed
概括
此摘要是机器生成的。

神经特异性的N1-SRC激酶调节胚胎发育期间的替代mRNA拼接. 这一过程对神经生成至关重要,因为它控制了像HNRNPA1和TRA2A这样的拼接因子.

关键词:
在SRC中,它是SRC.这是Xenopus.神经发生神经发生.酸化的方法是:光化.铁氨酸激酶酶的使用方法

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科学领域:

  • 分子生物学分子生物学
  • 发展生物学 发展生物学
  • 神经科学是一个神经科学.

背景情况:

  • 替代mRNA拼接驱动组织特异性功能的转录组多样性.
  • 胚胎大脑发育期间替代拼接的主调节者在很大程度上是未知的.
  • 通过C-SRC的剪接生成的神经特异性N1-SRC激酶,对于神经发生是至关重要的.

研究的目的:

  • 阐明N1-SRC在调节神经发生的目标和机制.
  • 调查N1-SRC在控制替代拼接环境中的作用.
  • 了解N1-SRC如何影响神经元分化过程中的拼接调节器.

主要方法:

  • 对N1-SRC SH3域交互器进行选.
  • 对SRC-依赖酸化的公共蛋白质数据的分析.
  • 在N1-SRC敲除*Xenopus*胚胎的长读和短读RNA测序.

主要成果:

  • N1-SRC SH3域交互器在拼接调节器中得到了丰富.
  • 包括RNA结合蛋白 (RBPs) 在内的拼接机械的SRC依赖化广泛存在.
  • N1-SRC的淘汰导致拼接调节器HNRNPA1和TRA2A的异常拼接.
  • 一个拟议的机制涉及N1-SRC调节拼接因子SFPQ和FUS,这反过来影响HNRNPA1和TRA2A拼接.

结论:

  • 从C-SRC到N1-SRC的神经元拼接是神经发生过程中替代拼接格局的关键调节者.
  • N1-SRC通过调节关键拼接因子的拼接来控制神经发生.
  • 这项研究揭示了一种新的调节途径,将氨酸激酶活性与神经发育中的替代拼接联系起来.