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Title: Transit amplifying cells coordinate mouse incisor mesenchymal stem cell activation
Authors: Walker, J.V.
Zhuang, H.
Singer, D.
Illsley, C.S.
Kok, W.L.
Sivaraj, K.K.
Gao, Y.
Bolton, C.
Liu, Y.
Zhao, M.
Grayson, P.R.C.
Wang, S. 
Karbanová, J.
Lee, T.
Ardu, S.
Lai, Q.
Liu, J.
Kassem, M.
Chen, S.
Yang, K.
Bai, Y.
Tredwin, C.
Zambon, A.C.
Corbeil, D.
Adams, R.
Abdallah, B.M.
Hu, B.
Issue Date: 2019
Publisher: Nature Publishing Group
Citation: Walker, J.V., Zhuang, H., Singer, D., Illsley, C.S., Kok, W.L., Sivaraj, K.K., Gao, Y., Bolton, C., Liu, Y., Zhao, M., Grayson, P.R.C., Wang, S., Karbanová, J., Lee, T., Ardu, S., Lai, Q., Liu, J., Kassem, M., Chen, S., Yang, K., Bai, Y., Tredwin, C., Zambon, A.C., Corbeil, D., Adams, R., Abdallah, B.M., Hu, B. (2019). Transit amplifying cells coordinate mouse incisor mesenchymal stem cell activation. Nature Communications 10 (1) : 3596. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Stem cells (SCs) receive inductive cues from the surrounding microenvironment and cells. Limited molecular evidence has connected tissue-specific mesenchymal stem cells (MSCs) with mesenchymal transit amplifying cells (MTACs). Using mouse incisor as the model, we discover a population of MSCs neibouring to the MTACs and epithelial SCs. With Notch signaling as the key regulator, we disclose molecular proof and lineage tracing evidence showing the distinct MSCs contribute to incisor MTACs and the other mesenchymal cell lineages. MTACs can feedback and regulate the homeostasis and activation of CL-MSCs through Delta-like 1 homolog (Dlk1), which balances MSCs-MTACs number and the lineage differentiation. Dlk1’s function on SCs priming and self-renewal depends on its biological forms and its gene expression is under dynamic epigenetic control. Our findings can be validated in clinical samples and applied to accelerate tooth wound healing, providing an intriguing insight of how to direct SCs towards tissue regeneration. © 2019, The Author(s).
Source Title: Nature Communications
ISSN: 2041-1723
DOI: 10.1038/s41467-019-11611-0
Rights: Attribution 4.0 International
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