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Dynamic Expression Profiles of Marker Genes in Osteogenic Differentiation of Human Bone Marrow-derived Mesenchymal Stem Cells△
- Affiliations：
Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
- Author bio：
*Corresponding author Tel: 86-10-69152809, Fax: 86-10-69152809, E-mail: ypwang@medmail.com.cn
- Funds：△Supported by the National Natural Science Foundation of China (81372007).
DOI：
中图分类号：收稿日期：2014-11-24，
网络出版日期：2015-04-20，
纸质出版日期：2015-04
- Accepted：
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Dynamic Expression Profiles of Marker Genes in Osteogenic Differentiation of Human Bone Marrow-derived Mesenchymal Stem Cells△[J]. 中国医学科学杂志（英文版）, 2015,30(2):108-113.
Wang Liang, Li Zheng-yao, Wang Yi-peng, et al. Dynamic Expression Profiles of Marker Genes in Osteogenic Differentiation of Human Bone Marrow-derived Mesenchymal Stem Cells△[J]. Chinese medical sciences journal, 2015, 30(2): 108-113.
Dynamic Expression Profiles of Marker Genes in Osteogenic Differentiation of Human Bone Marrow-derived Mesenchymal Stem Cells△[J]. 中国医学科学杂志（英文版）, 2015,30(2):108-113. DOI：
Wang Liang, Li Zheng-yao, Wang Yi-peng, et al. Dynamic Expression Profiles of Marker Genes in Osteogenic Differentiation of Human Bone Marrow-derived Mesenchymal Stem Cells△[J]. Chinese medical sciences journal, 2015, 30(2): 108-113. DOI：
摘要
Abstract
Objective
To observe the expression profiles of osteoblast-related genes in human mesenchymal stem cells (MSCs) derived from bone marrow during osteogenic differentiation.
Methods
MSCs were induced to differentiate with MSC osteogenic differentiation medium for 7
14
21 and 28 days respectively. Alizarin Red staining was used to detect matrix mineralization. Expression of osteoblast-related genes
including osteocalcin
osteopontin
Runt-related transcription factor 2 (Runx2)
alkaline phosphatase and collagen type Ⅰ
was assessed with quantitative reverse transcription-polymerase chain reaction.
Results
On day 14 after induction of differentiation
cells were stained positively with Alizarin Red. The expression levels of these genes exhibited an upward trend as induction time was prolonged. Exposure to osteogenic differentiation medium less than 21 days did not significantly induce osteocalcin expression; osteocalcin expression levels in the differentiated cells induced for 21 and 28 days were 1.63 and 2.46 times as high as the undifferentiated cells respectively (all
P
<
0.05). Stimulation with MSC osteogenic differentiation medium over 14 days significantly enhanced bone marrow-derived MSCs to express osteopontin and Runx2 genes (all
P
<
0.05). Osteogenic differentiation medium could significantly induce the expressions of alkaline phosphatase and collagen typeⅠ genes (all
P
<
0.05). Their expressions reached the peak levels on day 21
which were increased more than 4- and 3-fold respectively.
Conclusion
Human bone marrow-derived MSCs could exhibit the sequential expression pattern of osteoblast marker genes during osteogenic differentiation
in vitro
.
关键词
Keywords
references
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