PMID- 34233852 OWN - NLM STAT- MEDLINE DCOM- 20220301 LR - 20220301 IS - 0929-6646 (Print) IS - 0929-6646 (Linking) VI - 121 IP - 3 DP - 2022 Mar TI - Characterization of the stemness and osteogenic potential of oral and sinus mucosal cells. PG - 652-659 LID - S0929-6646(21)00297-7 [pii] LID - 10.1016/j.jfma.2021.06.017 [doi] AB - BACKGROUND/PURPOSE: Covering the wounds from guided bone regeneration and sinus floor elevation with oral and sinus mucosa is a fundamental criterion for success. This study aimed to verify the regeneration capability of the mucosal connective tissue stromal cells by characterizing their stemness and osteogenic potentials. METHODS: Bone marrow stromal cells (BMSCs), alveolar mucosa cells (AMCs), keratinized gingival cells (KGCs), and sinus mucosal cells (SMCs), were isolated from four Sprague-Dawley rats. The morphology and viability of the cells were investigated under a confocal microscope and by Alamar Blue. Stem cell surface markers were evaluated by flow cytometry. Expressions of pluripotent factors after initial seeding and an early osteogenic gene following 24 h of osteoinduction were evaluated by realtime PCR. Trilineage differentiation capability in long-term inductive cell culture was assessed by Alizarin Red, Alcian Blue, and Oil Red O staining. RESULTS: BMSCs and AMCs were larger cells with smaller aspect ratios relative to KGCs and SMCs, and BMSCs revealed the greatest initial viability but the slowest proliferation. More than 94% of BMSCs, AMCs, and KGCs were double-positive for CD73 and CD90. Compared with BMSCs, AMCs expressed significantly higher Oct4 but reduced Cbfa1 after initial seeding, and AMCs and SMCs expressed significantly higher Cbfa1 following 24 h of osteoinduction. In long-term inductive cell culture, osteogenesis was observed in BMSCs, AMCs, and SMCs, chondrogenesis was observed in BMSCs, AMCs, and KGCs, and adipogenesis was evident in only BMSCs. CONCLUSION: AMCs contain a high percentage of stem/progenitor cells and show differentiation capability toward osteogenic lineage. CI - Copyright (c) 2021 Formosan Medical Association. Published by Elsevier B.V. All rights reserved. FAU - Chen, Ming-Hsu AU - Chen MH AD - Department of Otorhinolaryngology, Cathay General Hospital, Taipei, Taiwan. FAU - Tai, Wei-Chiu AU - Tai WC AD - Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan. FAU - Cheng, Nai-Chen AU - Cheng NC AD - Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan. FAU - Chang, Ching-He AU - Chang CH AD - Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan. FAU - Chang, Po-Chun AU - Chang PC AD - Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Division of Periodontics, Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan; School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. Electronic address: changpc@ntu.edu.tw. LA - eng PT - Journal Article DEP - 20210704 PL - Singapore TA - J Formos Med Assoc JT - Journal of the Formosan Medical Association = Taiwan yi zhi JID - 9214933 SB - IM MH - Animals MH - Bone Marrow Cells MH - Cell Differentiation MH - Cells, Cultured MH - *Osteogenesis MH - Rats MH - Rats, Sprague-Dawley MH - *Sinus Floor Augmentation OTO - NOTNLM OT - Bone regeneration OT - Gingiva OT - Mesenchymal stem cells OT - Nasal mucosa COIS- Declaration of competing interest The authors have no conflicts of interest relevant to this article. EDAT- 2021/07/09 06:00 MHDA- 2022/03/03 06:00 CRDT- 2021/07/08 05:44 PHST- 2021/05/18 00:00 [received] PHST- 2021/06/10 00:00 [revised] PHST- 2021/06/17 00:00 [accepted] PHST- 2021/07/09 06:00 [pubmed] PHST- 2022/03/03 06:00 [medline] PHST- 2021/07/08 05:44 [entrez] AID - S0929-6646(21)00297-7 [pii] AID - 10.1016/j.jfma.2021.06.017 [doi] PST - ppublish SO - J Formos Med Assoc. 2022 Mar;121(3):652-659. doi: 10.1016/j.jfma.2021.06.017. Epub 2021 Jul 4.