Effect of Gelatin on Osteogenic Cell Sheet Formation using Canine Adipose-Derived Mesenchymal Stem Cells

bone regeneration;gelatin;mesenchymal stem cells;osteogenic cell sheets;636

수의과대학 수의학과 ;

University:서울대학교 대학원

关键词: bone regeneration;    gelatin;    mesenchymal stem cells;    osteogenic cell sheets;    636;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/133776/1/000000142148.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

Osteogenically differentiated cell sheet techniques using mesenchymal stem cells (MSCs) are available to stimulate bone regeneration. The advantage of cell sheet technique is delivering live cells effectively into the focal region. We developed a novel osteogenic cell sheet technique by adding gelatin to osteogenic cell medium. Gelatin-induced cell sheets (GCSs) were compared to conventional osteogenic cell sheets (OCSs). Undifferentiated MSCs (UCs) were used as a control. The morphology of these cell sheets was evaluated microscopically and histologically. The time-dependent cell proliferation rate was estimated by DNA quantification. The expression of osteogenic gene markers and the number of calcium depositions were assessed by quantitative real-time polymerase chain reaction and Alizarin Red S (ARS) staining, respectively. GCSs were thicker and stronger than OCSs. GCSs showed a significantly higher cell proliferation rate compared to OCSs (p < 0.05). GCSs exhibited significantly higher upregulation of BMP-7 mRNA compared to OCSs (p < 0.05). Both GCSs and OCSs showed negative ARS reactivity on day 10, but only GCSs showed positive ARS reactivity on day 21. With this technique, we observed active cell proliferation with abundant ECM and upregulation of osteogenic bone markers, and our results suggest that GCSs could be promising for therapeutic applications in bone regeneration.