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相关概念视频

Cell Lines01:16

Cell Lines

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A cell line is a population of cells grown in vitro that can be subcultured over several generations. Normal cells cease to divide after a certain number of cell divisions, a process known as replicative senescence. This number, called the Hayflick limit, was conceptualized by Leonard Hayflick in 1961 when he observed that fetal cells grown in culture could only divide 40-60 times. This limit is due to the shortening of the telomeres during each round of cell division, preventing cell division...
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Multiplexed Analysis of Retinal Gene Expression and Chromatin Accessibility Using scRNA-Seq and scATAC-Seq
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在人类细胞图谱数据集中实现细胞类型的自动协调和整合

Chuan Xu1, Martin Prete1, Simone Webb2

  • 1Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK.

Cell
|December 22, 2023
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概括

在单细胞数据集中协调细胞类型,创建统一的人类细胞地图. 这种工具解决了技术上的偏见,并揭示了新的细胞关系,有助于疾病和组织研究.

关键词:
人类细胞地图细胞层次结构细胞类型的协调数据整合统一图表机器学习机关地图预测集群树一个单元

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科学领域:

  • 基因组学
  • 生物信息学
  • 细胞生物学

背景情况:

  • 标准化细胞类型定义对于人类细胞图谱至关重要.
  • 技术偏差和不同的注释分辨率阻碍了单细胞基因组学中的交叉数据集分析.

研究的目的:

  • 介绍CellHint,一个用于协调不同单细胞数据集的新型计算工具.
  • 开发一个解决技术偏差和提高单元类型注释准确性的框架.
  • 便于构建一个标准化的人类细胞图谱.

主要方法:

  • CellHint使用基于树的预测聚类方法来量化细胞-细胞转录组的相似性.
  • 一个关系图被构建为分层定义共享和独特的细胞子类型.
  • 通过协调的细胞类型和层次来指导跨数据集的快速集成工作流程.

主要成果:

  • 在免疫细胞数据集中,CellHint准确地汇总了专家策划的注释.
  • 在八种疾病中发现了健康和患病的肺细胞状态之间的新关系.
  • 在成年人的海马体中发现了不太了解的细胞类型.
  • 从12个组织中编制了大约370万个细胞的跨组织数据库.

结论:

  • CellHint提供了一种可靠的方法来协调单细胞数据的类型和解决技术偏差.
  • 该工具可以发现新的细胞类型关系,并促进创建全面的地图.
  • CellHint支持在各种人体组织中进行自动化的细胞注释,推进单细胞研究.