Spatiotemporal single-cell regulatory atlas reveals neural crest lineage diversification and cellular function during tooth morphogenesis

Junjun Jing, Jifan Feng, Yuan Yuan, Tingwei Guo, Jie Lei, Fei Pei, Thach-Vu Ho and Yang Chai ()
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Junjun Jing: University of Southern California
Jifan Feng: University of Southern California
Yuan Yuan: University of Southern California
Tingwei Guo: University of Southern California
Jie Lei: University of Southern California
Fei Pei: University of Southern California
Thach-Vu Ho: University of Southern California
Yang Chai: University of Southern California

Nature Communications, 2022, vol. 13, issue 1, 1-14

Abstract: Abstract Cranial neural crest cells are an evolutionary innovation of vertebrates for craniofacial development and function, yet the mechanisms that govern the cell fate decisions of postmigratory cranial neural crest cells remain largely unknown. Using the mouse molar as a model, we perform single-cell transcriptome profiling to interrogate the cell fate diversification of postmigratory cranial neural crest cells. We reveal the landscape of transcriptional heterogeneity and define the specific cellular domains during the progression of cranial neural crest cell-derived dental lineage diversification, and find that each domain makes a specific contribution to distinct molar mesenchymal tissues. Furthermore, IGF signaling-mediated cell-cell interaction between the cellular domains highlights the pivotal role of autonomous regulation of the dental mesenchyme. Importantly, we reveal cell-type-specific gene regulatory networks in the dental mesenchyme and show that Foxp4 is indispensable for the differentiation of periodontal ligament. Our single-cell atlas provides comprehensive mechanistic insight into the cell fate diversification process of the cranial neural crest cell-derived odontogenic populations.

Date: 2022
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DOI: 10.1038/s41467-022-32490-y

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