CeDAR: incorporating cell type hierarchy improves cell type-specific differential analyses in bulk omics data.
CeDAR: incorporating cell type hierarchy improves cell type-specific differential analyses in bulk omics data.
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DOI:
10.1186/s13059-023-02857-5
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发表时间:
2023-02-28
期刊:
影响因子:
12.3
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Bulk high-throughput omics data contain signals from a mixture of cell types. Recent developments of deconvolution methods facilitate cell type-specific inferences from bulk data. Our real data exploration suggests that differential expression or methylation status is often correlated among cell types. Based on this observation, we develop a novel statistical method named CeDAR to incorporate the cell type hierarchy in cell type-specific differential analyses of bulk data. Extensive simulation and real data analyses demonstrate that this approach significantly improves the accuracy and power in detecting cell type-specific differential signals compared with existing methods, especially in low-abundance cell types. The online version contains supplementary material available at 10.1186/s13059-023-02857-5.
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