Single-cell analysis identifies a key role for Hhip in murine coronal suture development.
Single-cell analysis identifies a key role for Hhip in murine coronal suture development.
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DOI:
10.1038/s41467-021-27402-5
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发表时间:
2021-12-08
影响因子:
16.6
通讯作者:
Jabs EW
中科院分区:
文献类型:
--
作者:
Holmes G;Gonzalez-Reiche AS;Saturne M;Motch Perrine SM;Zhou X;Borges AC;Shewale B;Richtsmeier JT;Zhang B;van Bakel H;Jabs EW
Craniofacial development depends on formation and maintenance of sutures between bones of the skull. In sutures, growth occurs at osteogenic fronts along the edge of each bone, and suture mesenchyme separates adjacent bones. Here, we perform single-cell RNA-seq analysis of the embryonic, wild type murine coronal suture to define its population structure. Seven populations at E16.5 and nine at E18.5 comprise the suture mesenchyme, osteogenic cells, and associated populations. Expression of Hhip, an inhibitor of hedgehog signaling, marks a mesenchymal population distinct from those of other neurocranial sutures. Tracing of the neonatal Hhip-expressing population shows that descendant cells persist in the coronal suture and contribute to calvarial bone growth. In Hhip−/− coronal sutures at E18.5, the osteogenic fronts are closely apposed and the suture mesenchyme is depleted with increased hedgehog signaling compared to those of the wild type. Collectively, these data demonstrate that Hhip is required for normal coronal suture development. Craniofacial development depends on formation and maintenance of sutures between bones of the skull. Here the authors identify enriched expression of the hedgehog inhibitor Hhip, specifically in the mesenchyme of the murine coronal suture, and show sutural dysgenesis in Hhip−/− mutants.
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