定量命运映射:通过回顾性谱系条形码分析祖先状态动态的一般框架
Weixiang Fang1, Claire M Bell2, Abel Sapirstein3
1Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA; Center for Epigenetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
Cell
|November 24, 2022
概括
这项研究引入了定量命运映射以使用血统条形码重建细胞发育动态. 这种方法揭示了祖先细胞的层次结构,时间和偏差,为发育过程提供了洞察力.
科学领域:
- 发育生物学
- 基因组学
- 计算生物学
背景情况:
- 基因组中的体质突变记录了发育过程中的细胞遗传关系.
- 了解祖先细胞的动态及其承诺偏差仍然是一个挑战.
研究的目的:
- 开发一种定量命运映射方法来重建祖细胞状态和动态.
- 介绍Phylotime,这是一个可扩展的方法,用于从血统条形码中重建时间尺度的族群.
主要方法:
- 基于后代细胞的时间尺度的命运测绘.
- 类型:可扩展的最大概率聚类方法,使用条码突变模型.
- 使用in silico和in vitro条形码实验进行验证.
主要成果:
- 基因细胞层次的重建,承诺时间,种群大小和偏差.
- 建立可靠的定量命运映射和原始状态覆盖的标准.
- 用于分析胚胎后祖先命运的谱系条形码的演示.
结论:
- 定量命运绘制为研究发展动态提供了一个强大的框架.
- 遗传条形码,无论是天然的还是合成的,都是了解生物体间细胞命运和动态的宝贵工具.
- 通过Phylotime方法,可以从条码数据中进行可扩展的基因结构重建.
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