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Clonal Diversity and Stem Cell Properties of Human Clonal Salivary Gland Stem Cells
Dept. of Otorhinolaryngology-Head and Neck Surgery
Jae-Yol LIM, Songyi LEE, Jeong-Seok CHOI, Young-Mo KIM, Jae-Yol LIM
¸ñÀû: Various types of salivary gland (SG)-resident stem/progenitor cells have been isolated and suggested for candidates of stem cell therapy for restoration of SG hypofunction. Homogenous clonal cells from a small amount of SG biopsy should be obtained and expanded rapidly ex vivo for clinical trials in human. Herein, we describe a method of rapid enrichment of human SG-derived clonal stem cells and characterize their stem cell properties. ¹æ¹ý:We isolated human SG-derived clonal stem cells (hSGSCs) by a modified subfractionation culture method. Three single cell clones were chosen, expanded, and examined for their stem cell properties. °á°ú:hSGSCs showed MSCs-like characteristics in terms of their marker expression and differentiation potential into fat, bone, and cartilage cell lineages with some different potential in each clones. They also exhibited epithelial-related characteristics and showed the ability to differentiate into ¥á-amylase-producing and hepatocyte-like cells. In addition, they showed immunosuppressive activity in vitro with some different potency again. °á·Ð:These results showed that by this protocol, we can obtain enriched single cell clone-derived SGSCs from a small biopsied SG pieces, and they have multipotent stem cell properties capable of differentiating into mesenchymal and epithelial lineage cells. Each clone possesses some different MSC characteristics and immunomodulatory activities.


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