ArticleStem cell research & therapy2026
Spatiotemporal single-cell atlas of suture stem cell dynamics in craniosynostosis.
Article in Stem cell research & therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundCraniosynostosis is a congenital disorder characterized by premature suture fusion and aberrant skull morphogenesis. The cellular dynamics and regulatory mechanisms of suture mesenchymal stem cells (SuSCs) in this disease remain poorly defined.
methodsWe integrated single-cell RNA sequencing and 2-μm-resolution Visium HD spatial transcriptomics to build a spatiotemporal atlas of coronal suture cells in Fgfr2
resultsThe atlas reveals stage-specific remodeling of SuSC niches and a shift of SuSC spatial associations toward osteogenic mesenchyme in craniosynostosis. Along the SuSC-to-osteoblast trajectory, pre-osteoblasts were depleted earlier than upstream SuSCs, and SuSCs displayed premature acquisition of osteogenic programs near the suture midline. Temporal Gene Ontology patterns indicated early extracellular-matrix disruption, mid-gestation chondrogenic activation, and postnatal mineralization. Network analysis nominated Foxa3 as a candidate regulator in SuSC subsets; siRNA knockdown of Foxa3 reduced ex vivo mineralization in the craniosynostosis background. Spatial communication analyses implicated signals from suture meningeal fibroblasts and immune cells that converge on SuSC fate.
conclusionsOur results support a model where craniosynostosis may involve disrupted temporal coordination of developmental programs, not merely accelerated bone formation. The atlas and analytic framework pinpoint when and where SuSC fate diverges, propose Foxa3 as an intervention target, and provide a high-resolution resource for mechanistic and therapeutic exploration.
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