Identification of Dental Stem Cells Similar to Skeletal Stem Cells.

Liang, J F; Wang, J; Ji, Y T; Zhao, Q; Han, L T; Miron, R J; Zhang, Y F (2022). Identification of Dental Stem Cells Similar to Skeletal Stem Cells. Journal of dental research, 101(9), pp. 1092-1100. Sage 10.1177/00220345221084199

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Stem and progenitor cells play important roles in the development and maintenance of teeth and bone. Surface markers expressed in bone marrow-derived mesenchymal stem cells are also expressed in dental tissue-derived stem cells. Mouse skeletal stem cells (mSSCs, CD45-Ter119-Tie2-CD51+Thy-6C3-CD105-CD200+) and human skeletal stem cells (hSSCs, CD45-CD235a-TIE2-CD31-CD146-PDPN+CD73+CD164+) have been identified in bone and shown to play important roles in skeletal development and regeneration. However, it is unclear whether dental tissues also harbor mSSC or hSSC populations. Here, we employed rainbow tracers and found that clonal expansion occurred in mouse dental tissues similar to that in bone. We sorted the mSSC population from mouse periodontal ligament (mPDL) tissue and mouse dental pulp (mDP) tissue in the lower incisors by fluorescence-activated cell sorting (FACS). In addition, we demonstrated that mPDL-derived skeletal stem cells (mPDL-SSCs) and mDP-derived skeletal stem cells (mDP-SSCs) have similar clonogenic capacity, as well as cementogenic and odontogenic potential, but not adipogenic potential, similar to the characteristics of mSSCs. Moreover, we found that the dental tissue-derived mSSC population plays an important role in repairing clipped incisors. Importantly, we sorted the hSSC population from human periodontal ligament (hPDL) and human dental pulp (hDP) tissue in molars and identified its stem cell characteristics. Finally, hPDL-like and hDP-like structures were generated after transplanting hPDL-SSCs and hDP-SSCs beneath the renal capsules. In conclusion, we demonstrated that mouse and human PDL and DP tissues harbor dental stem cells similar to mSSCs and hSSCs, respectively, providing a precise stem cell population for the exploration of dental diseases.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > School of Dental Medicine > Department of Periodontology
UniBE Contributor:	Miron, Richard John
Subjects:	600 Technology > 610 Medicine & health
ISSN:	0022-0345
Publisher:	Sage
Language:	English
Submitter:	Pubmed Import
Date Deposited:	23 Mar 2022 08:29
Last Modified:	05 Dec 2022 16:16
Publisher DOI:	10.1177/00220345221084199
PubMed ID:	35311416
Uncontrolled Keywords:	cell differentiation dental pulp flow cytometry periodontal ligament stem cells surface markers
URI:	https://boris.unibe.ch/id/eprint/167850