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In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
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The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
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eMCI:一个可解释的多式联络整合模型,用于揭示空间转录学和细胞间信号.

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eMCI集成单细胞RNA测序和空间转录组学数据进行全面分析. 这种可解释的深度学习模型准确地分类细胞类型,并揭示细胞间通信,增强空间转录学洞察力.

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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.
  • 生物信息学是一种生物信息学.

背景情况:

  • 目前用于整合单细胞RNA测序 (scRNA-seq) 和空间转录组学 (ST) 数据的方法是特定任务的.
  • 现有的方法往往提供不完整的ST数据分析,缺少空间表达,细胞特异性和细胞间通信之间的复杂关系.

研究的目的:

  • 开发一个可解释的多式联络整合模型 (eMCI) 用于全面的ST数据分析.
  • 利用深度神经网络来融合scRNA-seq和ST数据,使细胞层面的多个综合分析任务成为可能.

主要方法:

  • 开发了基于深度神经网络的EMCI模型,用于多式联网数据集成.
  • 利用点细胞相关性来融合scRNA-seq和ST数据.
  • 采用一种归因算法来识别关键的空间组件并阐明细胞类型特异性和细胞间通信模式.

主要成果:

  • 与模拟和真实ST数据集的最先进方法相比,eMCI在细胞类型分类和解卷方面表现出更高或可比的准确性.
  • 该模型成功地确定了与细胞类型相关的关键空间组件,并阐明了细胞特异性和通信的基础空间表达模式.
  • 应用于跨物种数据集 (斑马鱼,大豆,人类肺部),eMCI准确估计了细胞组成,并在空间和时间背景下推断了细胞相互作用.

结论:

  • eMCI提供了一个整合性框架,用于使用scRNA-seq数据解决空间转录组.
  • 该模型阐明了跨空间域的细胞间信号传导机制,而不需要先前的生物参考.
  • eMCI促进了特定于细胞类型和细胞间通信的空间表达模式的发现.