Zoledronate가 UMR-106 세포의 증식과 조골세포 형성에 미치는 영향
Zoledronate(Zometa®) inhibits the formation of osteoblast in rat osteoblastic cell line UMR-106
정기훈, 류동목, 지유진, 이덕원, 이현우,
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정기훈 ( Jeong Ki-Hoon ) - 경희대학교 치과대학 구강악안면외과학교실
류동목 ( Ryu Dong-Mok ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
지유진 ( Jee Yu-Jin ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
이덕원 ( Lee Deok-Won ) - 경희대학교 일반대학원 치의학과 구강악안면외과학
이현우 ( Lee Hyeon-Woo ) - 경희대학교 치의학전문대학원 치과약리학교실
KMID : 0362720080460100623
Abstract
Purpose: The purpose of this study is to identify the effect of zoledronate(Zometa®), which is most common nitrogen containing bisphosphonate, on survival, proliferation, and differentiation of osteoblast.
Material & Methods: Twenty four cell culture plates containing essential medium were seeded with UMR-106 cell lines, at density of 5 x 104 cells per plates. Each plates were incubated with 5% CO2 incubator at 37℃. Starting from 2 days after incubation, cell culture medias were replaced, and added with osteogenesis induction media and 0, 0.01, 0.1, 0.5, 1, 3μM of zoledronate(Zometa®), every 2 days, for 12 days. “Control group” was plates not added with zoledronate(0μM), and “experiment group” were plates added with different concentration of zoledronates(0, 0.01, 0.1, 0.5, 1, 3μM). Mature osteoblasts were identified with Alizarine Red staining, and protein samples were collected. Optical density was determined at wavelength of 405nm with ELISA reader. For viability analysis, cells were harvested and incubated with propidium iodide, and analysed with flow cytometry. Western blot technique was used to analyse Runx2 protein of osteoblast.
Results: Secretion of bone matrix decreased as zoledronate concentration increased, and zoledronate did not effect survival rate of UMR-106 cells when measured with flow cytometer. Expression of Runx2 protein was inhibited as zoledronate concentration increased.
Conclusion: From the results, we were able to identify that increase of zoledronate concentration inhibited differentiation of UMR-106 cell to osteoblast, without effecting quantity or survival rate.
키워드
Zoledronate;UMR-106;Osteoblast;Runx2
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