Comparative gene expression analysis of stemness between periodontal ligament and umbilical cord tissues in humans

Hyung Joo Lee, Mijeong Jeon, Young Han Kim, Seong Oh Kim, Ko Eun Lee

Research output: Contribution to journalArticlepeer-review

Abstract

Background/purpose: Due to their regenerative potential, periodontal ligament (PDL) and umbilical cord (UBC) tissues are an attractive potential mesenchymal stem cells (MSCs) source. This study compared the expression patterns of genes related to stemness between fresh PDL and UBC tissues. Materials and methods: PDL tissues were collected from 38 permanent premolars extracted for orthodontic purposes, and UBC tissues were obtained from three newborns. Each sample was immediately frozen to prevent RNA degradation. cDNA microarray analysis, quantitative real-time polymerase chain reaction (PCR), and immunohistochemical staining were performed. Gene expression patterns associated with dental stemness (DS) and induced pluripotent stemness (iPS) were compared between PDL and UBC tissues. Results: In the cDNA microarray analyses, the expressions of most iPS genes were greater in the PDL than in the UBC. Meanwhile, the expressions of most DS genes were greater in the UBC than in the PDL. Quantitative real-time PCR analyses showed that the expression levels of matrix metallopeptidase 13 (MMP13), ADAM metallopeptidase domain 22 (ADAM22), vascular cell adhesion protein 1 (VCAM1), and kruppel-like factor 4 (KLF4) genes were greater in the PDL than in the UBC, while the expressions of melanoma cell adhesion molecule (MCAM) and activated leukocyte cell adhesion molecule (ALCAM) were greater in the UBC than in the PDL. Conclusion: These results suggest that UBC and PDL tissues showed slightly different expression patterns of genes related to stemness, which warrants further investigation to use these tissues for future regeneration and implantation therapies.

Original languageEnglish
JournalJournal of Dental Sciences
DOIs
Publication statusAccepted/In press - 2022

Bibliographical note

Funding Information:
This research was supported by Yonsei University College of Dentistry ( 6-2016-0023 ) and the Basic Science Research Program through the National Research Foundation of Korea ( NRF ), funded by the Ministry of Education, Science and Technology ( 2012R1A1A2041910 ).

Publisher Copyright:
© 2022 Association for Dental Sciences of the Republic of China

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

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