BMP-2에 의한 협부 지방 성체 줄기세포의 골형성

• 영문명: OSTEOGENESIS BY BMP-2 IN ADULT STEM CELL DERIVED FROM BUCCAL FAT PAD
• 발행기관: 대한구강악안면외과학회
• 저자명: 김창현(Chang-Hyen Kim) 박철헌(Cheol-Hun Park) 이일규(Il-Kyu Lee) 표성운(Sung-Woon Pyo)
• 간행물 정보: 『대한구강악안면외과학회지』대한구강악안면회과학회지 제34권 제4호, 412~418쪽, 전체 7쪽
• 주제분류: 의약학 > 내과학
• 파일형태: PDF
• 발행일자: 2008.08.10

영문 초록

Bone morphogenetic proteins (BMPs) in combination with stem cells gain more significance for their use in bone tissue engineering. The mesenchymal stem cell can be differentiated into osteoblast by the treatment of BMP. The aim of this study is to characterize the osteogenic differentiation process of adult stem cells derived from buccal fat pad according to BMP-2 within culture media and decide the appropriate concentration of BMP-2 to facilitate osteogenesis. The authors procured the stem cell from buccal fat pad and analyzed for presence of stem cell by flow cytomety against CD-34, CD-105 and STRO-1. The buccal fat derived stem cells (BFDC) were treated by application of the different concentration with BMP-2 of 0, 10, 50, 100 and 200ng/ml, respectively. And their ability to differentiate into osteogenic pathway were checked by alkaline phosphatase(ALP) staining, Alizarin red staining and RT-PCR for osteocalcin(OC) gene expression at 7, 14 and 21day of culture. Flow cytometric analysis and biochemical assays demonstrated that BFDC might be a distinguished stem cells, and mineralization was accompanied in proportion to BMP-2 concentration. However, with 100ng/ml concentration of BMP-2, the BFDC demonstrated most efficent staining pattern of ALP and Alizarin red. The feasibilty of the osteogenic differentiation in the group of both 50ng/ml and 200ng/ml of BMP-2 showed similar activity and relatively weaker than that of 100ng/ml. These results suggest that the BMP-2 stimulate osteogenesis by BFDC effectively and that bone induction might be controlled through negative regulatory feedback in higher concentration.

키워드

Stem cell BMP-2 Osteogenesis Differentiation