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相关概念视频

Protein Networks02:26

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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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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Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
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相关实验视频

Updated: Jun 11, 2025

Author Spotlight: Impact of Intergenic Interactions on Disease-Identifying Dark Biomarkers
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通过从蛋白质语言模型构建的基因网络输入空间转录组学.

Yuansong Zeng1,2,3, Yujie Song2, Chengyang Zhang2

  • 1School of Big Data and Software Engineering, Chongqing University, Chongqing, China.

Communications biology
|October 5, 2024
PubMed
概括
此摘要是机器生成的。

stImpute通过使用由蛋白质语言模型告知的新型图形神经网络方法赋值缺失的基因表达数据来改进空间转录学. 这种方法提高了细胞群的识别和预测准确性在转录组学研究.

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科学领域:

  • 基因组学就是基因组学.
  • 计算生物学 计算生物学
  • 生物信息学是一种生物信息学.

背景情况:

  • 基于图像的空间转录学提供单细胞分辨率,但有限的基因检测.
  • 由于忽视了基因关系,现有的归算方法在准确性和细胞群体识别方面扎.

研究的目的:

  • 介绍stImpute,一种用于在空间转录组学数据中赋值基因表达的新型计算方法.
  • 利用参考单细胞RNA测序 (scRNA-seq) 数据和基因网络进行改进的归算.

主要方法:

  • stImpute使用了用于基因表达嵌入的自编码器和用于归算的图形神经网络 (GNN).
  • 基因网络是使用ESM-2蛋白语言模型的嵌入式构建的,捕捉基因-基因关系.
  • 在空间和scRNA-seq数据集之间的最近邻近的细胞被确定为指导归算.

主要成果:

  • 与多个数据集的现有最先进方法相比,stImpute 在归算和细胞聚类方面表现出卓越的性能.
  • 该方法提供了可靠和一致的结果,对参数变化不敏感.
  • 一个深度学习模型量化了基因预测的不确定性.

结论:

  • 通过结合基因网络,stImpute有效地解决了空间转录组学归因的局限性.
  • 这种方法提高了基因表达数据和细胞群体识别的准确性.
  • stImpute提供了一个强大而可靠的工具,用于空间转录学分析.