Study Quantifies Mosaic And Regulative Contributions
Researchers Song and Villoutreix (2025) develop a quantitative method to partition mosaic and regulative developmental contributions using single-cell protein expression, spatial positions, and lineage data from C. elegans embryos. They define two metrics correlating lineage-distance and context-distance with expression-distance, validate against simulated models, and show both modes coexist with tissue- and stage-specific dominance, for example skin shifts from mosaic early to regulative later. The approach is perturbation-free and open.
Key Points
- 1Define two quantitative metrics linking lineage and spatial context distances to expression-distance.
- 2Demonstrate mosaic and regulative modes coexist and vary across tissues and developmental stages.
- 3Provide a non-perturbative framework to quantify developmental mode contributions from single-cell data.
Scoring Rationale
Novel quantitative framework with validation and open code, but limited scope to C. elegans proteomic trajectories.
Sources
Public references used for this report.
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