[1]曹炜鹏,周强,徐海伟,等.脉冲电磁场诱导小鼠胚胎干细胞向成骨细胞分化[J].第三军医大学学报,2009,31(09):772-775.
 CAO Wei-peng,ZHOU Qiang,XU Hai-wei,et al.Pulsed electromagnetic fields induce osteoblast differentiation from mouse embryonic stem cells in vitro[J].J Third Mil Med Univ,2009,31(09):772-775.
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《第三军医大学学报》[ISSN:1000-5404/CN:51-1095/R]

卷:
31卷
期数:
2009年第09期
页码:
772-775
栏目:
论著
出版日期:
2009-05-15

文章信息/Info

Title:
Pulsed electromagnetic fields induce osteoblast differentiation from mouse embryonic stem cells in vitro
作者:
曹炜鹏周强徐海伟吴雪晖刘涌宋磊唐军杨丽
第三军医大学:西南医院骨科,全军矫形外科中心,基础医学部生理学教研室,重庆市神经科学研究所
Author(s):
CAO Wei-peng ZHOU Qiang XU Hai-wei WU Xue-hui LIU Yong SONG Lei TANG Jun YANG Li
Department of Orthopedics, Southwest Hospital, Department of Physiology, College of Basic Medical Sciences, Third Military Medical University, Chongqing 400038, China
关键词:
脉冲电磁场胚胎干细胞成骨细胞定向诱导骨组织工程
Keywords:
pulsed electromagnetic fieldsembryonic stem cellsosteoblastdirected differentiationbone tissue engineering
分类号:
R322.71;R329.21;R339.57
文献标志码:
A
摘要:
目的   观察脉冲电磁场对小鼠胚胎干细胞向成骨细胞分化的影响。   方法   将小鼠4 d龄胚胎干细胞(embryonic stem cells,ESCs)衍生的胚胎体单细胞按5×104ml-1接种到细胞培养板,在DMEM基础培养液中使胚胎体单细胞贴壁培养。于第14~21天时,分别给予脉冲电磁场、化学诱导剂以及联合刺激。采用茜素红染色、骨钙素免疫组织化学染色、成骨分化关键因子Osterix和Cbfa-1/Runx-2的相对定量RT-PCR检测等方法观测成骨分化情况。   结果   茜素红染色和RT-PCR结果均显示:脉冲电磁场组、化学诱导组以及联合培养组的成骨诱导效果均比空白对照组显著增加,其中又以联合培养组成骨诱导效果最明显。骨钙素免疫组化染色也显示:联合培养组中骨钙素分泌最多。   结论   脉冲电磁场可以促进小鼠胚胎干细胞向成骨细胞分化,而且脉冲电磁场和常规化学诱导剂联合应用会产生协同效应,其成骨诱导效果优于两者单独应用。
Abstract:
Objective   To investigate the effect of pulsed electromagnetic fields (PEMFs) on the osteoblast differentiation of mouse embryonic stem cells.    Methods   The cells isolated from 4-day embryoid bodies (EBs) derived from mouse embryonic stem cells (mESCs) were inoculated into each well of cell culture plate at 5×104/ml in DMEM and then cultured. During the period from 14 to 21 d after the EBs-derived single cells attachment, the cells was divided into 4 groups: control (group A), PEMFs (group B, 50 Hz, 1.1 mT, twice per day, 30 min per time, in an interval of 12 h), chemical inductor (group C, 50 μg/ml Vitamin C, 10 mmol/L β-glycerophosphate and 1 μmol/L  dexamethasone   in the culture medium), B+C (group D). Histochemical staining for Alizarin Red, immunocytochemical staining for osteoclacin expression and PCR for Osterix and Cbfa-1/Runx-2 were applied to measure the osteoblast differentiation.     Results   Alizarin Red staining revealed that compared with group A, the surface area of bone nodule colonies of group B, C and D were increased respectively by 123%, 229% and 262% (P<0.01). The surface area of bone nodule colonies of group D was raised by 62% compared with that of group B (P<0.01) and by 10% with that of group C (P<0.05). Immunocytochemical staining for osteoclacin revealed that the expression of osteoclacin were the most in group D. PCR revealed that the expression of Osterix and Cbfa-1/Runx-2 of group B, C and D were more than that of group A.     Conclusion   PEMF accelerates the differentiation of mESCs to osteoblasts. Combining PEMFs and chemical inducers together have synergistic effect.

参考文献/References:

曹炜鹏,周强,徐海伟,等. 脉冲电磁场诱导小鼠胚胎干细胞向成骨细胞分化[J]. 第三军医大学学报,2009,31(9):772-775.

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更新日期/Last Update: 2009-04-27