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相关概念视频

RNA Splicing01:32

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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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相关实验视频

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Identification of Alternative Splicing and Polyadenylation in RNA-seq Data
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在单细胞分辨率下通过SCSESES破译拼接异质性.

Xiao Wen1,2, Xuan Lv1,2,3, Dan Guo1,2

  • 1Department of Computation Biology, China National Center for Bioinformation, Beijing, 100101, China.

Nature communications
|October 28, 2025
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概括
此摘要是机器生成的。

我们开发了SCSES,这是一个计算工具,用于改进单细胞RNA测序数据中的替代拼接分析. 通过推断缺少的数据,SCSES增强了拼接配置文件,揭示了以前隐藏的细胞子组和拼接模式.

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相关实验视频

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科学领域:

  • 计算生物学 计算生物学
  • 基因组学就是基因组学.
  • 文字转录学 (Transcriptomics) 是一个学科.

背景情况:

  • 替代拼接 (AS) 对于细胞多样性至关重要.
  • 单细胞RNA测序 (scRNA-seq) 被广泛使用,但由于噪音和失学,在准确地表征AS方面面临挑战.
  • 现有的方法很难在单细胞水平上完全捕捉拼接变异.

研究的目的:

  • 开发一个计算框架,SCSES (单细胞分离估计),以增强scRNA-seq数据中的AS配置文件.
  • 在单细胞水平上提高拼接变化表征的准确性.
  • 发现通过不同的拼接模式定义的新型细胞子组.

主要方法:

  • 开发了基于数据扩散的计算框架SCSES.
  • 通过利用来自相似细胞和拼接事件的信息,SCSES推断和归因缺失的拼接事件.
  • 通过系统的模拟研究和对各种现实世界scRNA-seq数据集的应用来验证SCSES.

主要成果:

  • 在恢复百分比拼接入 (PSI) 值和拼接多样性方面,SCSES在现有算法上表现出卓越的性能.
  • 应用SCSES揭示了通过传统的基因表达集群检测不到的显著的拼接异质性.
  • 鉴定出独特的细胞子组,其特征是独特的拼接特征.

结论:

  • SCSES是一个强大的计算工具,用于准确的单细胞拼接分析.
  • 该框架有效地增强了AS概况,使得发现新的生物见解成为可能.
  • SCSES是多功能且适用于各种生物环境,物种和测序技术.