Morphological stability, cellular viability and stem cell marker expression of three‑dimensional cultures of stem cells from bone marrow and periodontium

Tae,Jae-Yong; Lee,Hyunjin; Lee,Hyuna; Song,Youngmin; Park,Jun-Beom

doi:10.3892/br.2020.1385

Morphological stability, cellular viability and stem cell marker expression of three‑dimensional cultures of stem cells from bone marrow and periodontium

Authors:
- Jae-Yong Tae
- Hyunjin Lee
- Hyuna Lee
- Youngmin Song
- Jun-Beom Park
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Affiliations: Department of Periodontics, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
Published online on: November 11, 2020 https://doi.org/10.3892/br.2020.1385
Article Number: 9
Copyright: © Tae et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the present study was to evaluate the morphology, cellular viability and stem cell marker expression of three‑dimensional cultures of bone marrow and gingiva‑derived stem cells in different ratios. Stem cell spheroids were made with bone marrow and gingiva‑derived stem cells using ratios of 6:0 (Group 1), 4:2 (Group 2), 3:3 (Group 3), 2:4 (Group 4) and 0:6 (Group 5), respectively. The viability of cell spheroids was analyzed using a Live/Dead kit assay and a Cell Counting Kit‑8 assay. Total RNA extraction and reverse transcription‑quantitative PCR were performed to detect the mRNA expression levels of Nanog and β‑actin in each group. Stem cell spheroids were well formed in silicone elastomer‑based concave microwells with different ratios of bone marrow and gingiva‑derived stem cells. The shape of the spheroids and their viability were maintained throughout the entirety of the experimental procedure. Statistically significant increases in spheroid diameters were noted in Groups 4 and 5 on day 1 when compared with Group 1 on day 1. There was a significant increase in the cell viability values seen in Group 3 on day 1 when compared with Group 1 on day 1. Highest levels of Nanog expression was seen in Group 3 on day 10, but the increase was not significant when compared with Group 1 on day 1. Co‑culturing with higher ratios of gingiva‑derived stem cells produced stem cell spheroids with larger diameters and increased cellular viability. This co‑culture technique may be used in stem cell therapy with allogenic stem cell transplantation.

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