Concentrating cell-type-specific transcriptional signatures in bone marrow from interspecies comparisons.

Interspecies comparison of single-cell RNA sequencing identifies conserved signature genes that robustly define homologous bone marrow cell types across four mouse species.

• Why it matters: Understanding conserved cell-type markers is crucial for translating findings across species and advancing comparative biology, but existing methods lack integration of transcriptional level conservation.
• What they did: The authors generated single-cell RNA sequencing data from bone marrow compartments in four mouse species and developed a strategy that combines conserved cell-type specificity with transcriptional level conservation to produce signature gene lists.
• The result: These signature genes effectively distinguish homologous cell types across diverse tissues and species, outperforming larger, less-conserved gene lists, and demonstrate versatility in other tissues and mammalian orders.