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Glial origin of mesenchymal stem cells in a tooth model system
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2014 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 513, no 7519, p. 551-554Article in journal (Refereed) Published
Abstract [en]

Mesenchymal stem cells occupy niches in stromal tissues where they provide sources of cells for specialized mesenchymal derivatives during growth and repair(1). The origins of mesenchymal stem cells have been the subject of considerable discussion, and current consensus holds that perivascular cells form mesenchymal stem cells in most tissues. The continuously growing mouse incisor tooth offers an excellent model to address the origin of mesenchymal stem cells. These stem cells dwell in a niche at the tooth apex where they produce a variety of differentiated derivatives. Cells constituting the tooth are mostly derived from two embryonic sources: neural crest ectomesenchyme and ectodermal epithelium(2). It has been thought for decades that the dental mesenchymal stem cells(3) giving rise to pulp cells and odontoblasts derive from neural crest cells after their migration in the early head and formation of ectomesenchymal tissue(4,5). Here we show that a significant population of mesenchymal stem cells during development, self-renewal and repair of a tooth are derived from peripheral nerve-associated glia. Glial cells generate multipotent mesenchymal stem cells that produce pulp cells and odontoblasts. By combining a clonal colour-coding technique(6) with tracing of peripheral glia, we provide new insights into the dynamics of tooth organogenesis and growth.

Place, publisher, year, edition, pages
2014. Vol. 513, no 7519, p. 551-554
Keywords [en]
Cranial Neural Crest, Regeneration, Homeostasis, Generation, Mice
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:kth:diva-154372DOI: 10.1038/nature13536ISI: 000342075800041PubMedID: 25079316Scopus ID: 2-s2.0-84908519204OAI: oai:DiVA.org:kth-154372DiVA, id: diva2:757102
Funder
Science for Life Laboratory - a national resource center for high-throughput molecular bioscienceSwedish Research CouncilEU, European Research Council
Note

QC 20141021

Available from: 2014-10-21 Created: 2014-10-20 Last updated: 2022-06-23Bibliographically approved

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Blom, HansBrismar, Hjalmar

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