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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

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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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Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
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相关实验视频

Updated: Jan 11, 2026

A Reporter Based Cellular Assay for Monitoring Splicing Efficiency
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剪接意识的scRNA-Seq解析显示了效应器Tregs中准备执行的程序.

Daniil K Lukyanov1,2,3, Evgeniy S Egorov3,4, Valeriia V Kriukova5

  • 1Center for Molecular and Cellular Biology, Moscow, Russia.

PLoS computational biology
|November 10, 2025
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概括
此摘要是机器生成的。

一种新的方法,SANSARA,在单细胞RNA测序 (scRNA-Seq) 数据中分析拼接和未拼接的mRNA. 这种拼接意识的方法揭示了对细胞状态和基因表达动态的新见解.

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科学领域:

  • 分子生物学分子生物学
  • 基因组学就是基因组学.
  • 免疫学 免疫学 免疫学

背景情况:

  • 单细胞RNA测序 (scRNA-Seq) 对于细胞生物学研究至关重要.
  • 当前的scRNA-Seq方法在缩小维度过程中缺乏区分拼接和未拼接mRNA的能力.
  • 未分离的mRNA表明细胞的过渡状态,这对于理解再生等动态生物过程至关重要.

研究的目的:

  • 开发一种新的方法,SANSARA (Splicing-Aware scrNa-Seq AppRoAch),用于分析具有拼接意识的scRNA-Seq数据.
  • 为了在scRNA-Seq分析中区分拼接和未拼接的mRNA形式.
  • 在基于scRNA-Seq的研究中发现新的维度.

主要方法:

  • 开发SANSARA方法用于scRNA-Seq数据的拼接意识分析.
  • 应用SANSARA来表征外围血液调节性T细胞 (Treg) 的子集.
  • 在Th1和细胞毒性CD4+T细胞子集中的拼接异质性的分析.

主要成果:

  • 在Tregs中,SANSARA揭示了FOXP3和Helios之间的互补相互作用.
  • 在效应Tregs中发现了高水平的拼接IL10RA,LGALS3,FCRL3,CD38,ITGAL和LEF1mRNA.
  • 在Th1和细胞毒性CD4+T细胞中的子集特定基因中观察到大量的拼接异质性.

结论:

  • SANSARA为当前的scRNA-Seq管道提供了一个简单的实现.
  • 该方法通过结合拼接信息,为发现开辟了新的途径.
  • 功能性细胞子集可能在活跃生成和储存的mRNA形式上有所不同,影响细胞功能.