DepMap: The Cancer Dependency Map Project at Broad Institute
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Gene dpendency:
A genetic dependency is a gene that is considered necessary for the proliferation and survival of a given cell population.
Gene dependency 图表解读
The dependent cell lines tileGene Effect Score :扰动后的效应。
- 算法:DEMETER2 (RNAi) or Chronos (CRISPR) 。
- normalization:已知的common essential genes 的median effect score为 -1,non-essential 为0,normalization。效应越大,越负。
图中信息
a) the distribution of gene effect scores
b) the fraction of cell lines classified asdependenton the gene
c) a category assigned to each dependency profile when/as appropriate.
根据gene effect score distribution 分成3类基因
1.Strongly Selective Distribution
2.Common-Essential Distribution
Common-Essential Distribution :在大部分cell lines 中 dependent,-1附近或者更负3.Non-essential Distribution
Non-essential Distribution :大部分分布在 0 附近
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CRISPR KO vs RNAi Knockdown
differences between -
Dependent or Not 的分类
与 已知essential、non相比较,计算dependent 的概率 ,>0.5 则定义为dependent。算法:Extracting Biological Insights from the Project Achilles Genome-Scale CRISPR Screens in Cancer Cell Lines | bioRxiv
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