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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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Alternative RNA Splicing02:18

Alternative RNA Splicing

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Pre-mRNA Processing: RNA Splicing01:36

Pre-mRNA Processing: RNA Splicing

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mRNA Stability and Gene Expression02:51

mRNA Stability and Gene Expression

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mRNA Stability and Gene Expression02:51

mRNA Stability and Gene Expression

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The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
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相关实验视频

Updated: Jan 13, 2026

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

Published on: April 22, 2021

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老化中的转录多样性:神秘的转录和拼接.

Brenna S McCauley1, Nicholas Nikoloutsos2, Weiwei Dang1,3

  • 1Huffington Center on Aging, Houston, TX, USA.

Medical review (2021)
|October 29, 2025
PubMed
概括

由替代拼接和神秘转录驱动的转录多样性随着年龄的增长而增加. 这种新的转录增加有助于老化表型,并影响组织功能.

科学领域:

  • 分子生物学分子生物学
  • 遗传学 是一个遗传学.
  • 老年学是一门学科.

背景情况:

  • 转录组重塑是衰老的一个标志.
  • 替代拼接和加密转录有助于转录的多样性.
  • 在各种组织中,随着年龄的增长,小说的副本数量会增加.

研究的目的:

  • 调查转录多样性在衰老中的作用.
  • 探索与年龄相关的转录变化的功能影响.

主要方法:

  • 对年龄相关的转录组重塑的分析.
  • 通过替代拼接和加密转录来识别新的转录.

主要成果:

  • 在老化过程中,结构新的转录显著增加.
  • 具有与年龄相关的神秘和替代拼接转录的基因与衰老的表型有关.
  • 这些包括认知能力下降,肌肉力量下降和免疫衰老.

结论:

  • 通过替代拼接和神秘转录增加的转录多样性是衰老的强有力的驱动因素.
  • 这些发现为了解衰老的转录调节增加了新的层次.
关键词:
衰老的衰老 衰老的衰老替代性拼接是一种替代性的拼接.隐秘的转录 转录的隐秘方式表观遗传学是指表观遗传学.

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