中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (13): 1980-1985.doi: 10.3969/j.issn.2095-4344.2017.13.003

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

感觉神经递质降钙素基因相关肽对去势大鼠骨髓间充质干细胞增殖及成骨能力的影响

陈  杰1,2,丁宇翔1,刘彦普1,马  戈1,刘  伟1   

  1. 1军事口腔医学国家重点实验室,口腔疾病国家临床医学研究中心,陕西省口腔疾病重点实验室,第四军医大学口腔医院口腔外科,陕西省西安市  710032;2解放军兰州军区总医院颌面外科,甘肃省兰州市  730050
  • 修回日期:2017-03-24 出版日期:2017-05-08 发布日期:2017-06-09
  • 通讯作者: 丁宇翔,博士,副主任医师,军事口腔医学国家重点实验室,口腔疾病国家临床医学研究中心,陕西省口腔疾病重点实验室,第四军医大学口腔医院口腔外科,陕西省西安市 710032
  • 作者简介:陈杰,男,1980年生,山西省阳泉市人,汉族,2003年解放军第四军医大学毕业,博士,主治医师,主要从事颌骨代谢与骨质疏松的相关理论及临床研究工作。
  • 基金资助:

    国家自然科学基金(81271103);陕西省社发攻关课题(2012K16-10-01)

Calcitonin gene-related peptide, a sensory neurotransmitter, promotes proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells from ovariectomized rats

Chen Jie1, 2, Ding Yu-xiang1, Liu Yan-pu1, Ma Ge1, Liu Wei1    

  1. 1State Key Laboratory of Military Stomatology, Department of Oral Surgery, School of Stomatology, the Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China; 2Departmen of Maxillofacial Surgery, Lanzhou General Hospital of Lanzhou Military Region, Lanzhou 730050, Gansu Province, China
  • Revised:2017-03-24 Online:2017-05-08 Published:2017-06-09
  • Contact: Ding Yu-xiang, M.D., Associate chief physician, State Key Laboratory of Military Stomatology, Department of Oral Surgery, School of Stomatology, the Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
  • About author:Chen Jie, M.D., Attending physician, State Key Laboratory of Military Stomatology, Department of Oral Surgery, School of Stomatology, the Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China; Departmen of Maxillofacial Surgery, Lanzhou General Hospital of Lanzhou Military Region, Lanzhou 730050, Gansu Province, China
  • Supported by:

     the National Natural Science Foundation of China, No. 81271103; the Special Project of Social Development and High Technology in Shaanxi Province, No. 2012K16-10-01

摘要:

文章快速阅读:

文题释义:
骨髓间充质干细胞分化:
骨髓间充质干细胞分化的实质是骨髓间充质干细胞内基因的选择性表达,导致新的、特异性的蛋白质合成变化,进而引起生化、结构及功能上的改变。诱导因素和抑制因素的相互制约、激素及多种细胞信号分子形成的信号网络以及细胞本身所处微环境等,都会诱导相关基因在序列上发生改变,促使骨髓间充质干细胞向不同类型的细胞分化,或者分化能力受到影响。自人们首次发现大鼠骨髓间充质干细胞在体外培养条件下能形成钙化的骨样组织以来,围绕着骨髓间充质干细胞的成骨能力出现了大量的研究,而且骨髓间充质干细胞也作为一种组织工程的种子细胞来源得以广泛应用。目前诱导骨髓间充质干细胞成骨的方法多是采用含有地塞米松、β-甘油磷酸以及维生素C的条件培养液。
降钙素基因相关肽的分布:降钙素基因相关肽来源于脊髓后根神经节内的中小感觉神经元,并通过轴突传送到感觉神经末梢。虽然含有降钙素基因相关肽的感觉神经广泛分布于骨组织中,但它在骨组织中的不同部位其分布的密度是不同的,分布密度最高的地方在骨干骺端的骨小梁。在干骺端的骨表面,降钙素基因相关肽的神经纤维形成膨隆,内含丰富的分泌囊泡。而在血管旁分布的是含SP和TH的神经纤维。另外,从分布中可以看出含降钙素基因相关肽的神经纤维终止在骨骺处,表明其传导的目的地即为成骨、破骨细胞。

 

摘要
背景:
研究发现降钙素基因相关肽能够增强成骨细胞的生物学活性,实验拟进一步检测降钙素基因相关肽对骨髓间充质干细胞成骨分化的影响。
目的:探讨外源性降钙素基因相关肽对去势大鼠骨髓间充质干细胞增殖、成骨能力的影响。
方法:切除雌性SD大鼠双侧卵巢建立骨质疏松模型,并通过micro-CT验证。从假手术和去势大鼠股骨中提取骨髓间充质干细胞,培养液中添加不同浓度降钙素基因相关肽,MTT法检测细胞增殖能力。对骨髓间充质干细胞进行成骨诱导,在诱导液中添加不同浓度降钙素基因相关肽,成骨诱导7 d,采用Real time RT-PCR和Western blot检测成骨特异性蛋白Runx2,Osterix的表达,成骨诱导21 d进行茜素红染色。
结果与结论:①切除雌性大鼠双侧卵巢可成功建立骨质疏松模型;②不同浓度的降钙素基因相关肽可增强去势大鼠骨髓间充质干细胞的增殖及成骨分化能力,且具有剂量依赖性;③结果表明,降钙素基因相关肽对去势大鼠骨髓间充质干细胞增殖及成骨分化能力有直接促进作用,从而有利于骨形成。

 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0003-4015-869X(陈杰)

关键词: 干细胞, 骨髓干细胞, 骨髓间充质干细胞, 骨质疏松, 成骨分化, 降钙素基因相关肽, Runx2, Osterix, 细胞增殖, 成骨诱导, 国家自然科学基金

Abstract:

BACKGROUND: Calcitonin gene-related peptide can promote the biological activity of osteoblasts. Here, we attempt to further study the effect of calcitonin gene-related peptide on osteogenic differentiation of bone marrow mesenchymal stem cells.
OBJECTIVE: To observe the effects of exogenous calcitonin gene-related peptide on proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells from ovariectomized rats.
METHODS: An ovariectomized osteoporosis model in female Sprague-Dawley rats was employed, which was testified by micro-CT. Bone marrow mesenchymal stem cells were obtained from the femur of rats undergoing sham operation and ovariectomy, and then cultured and induced in the culture medium and osteogenic medium containing different concentrations of calcitonin gene-related peptide, respectively. The cell proliferation was detected using MTT method. After 7 days of osteogenic induction, real-time RT-PCR and western blot were used to detect Runx2 and Osterix expression at mRNA and protein levels. After 21 days of osteogenic induction, the osteogenic differentiation potentials of the cells were detected using alizarin red staining.
RESULTS AND CONCLUSION: The osteoporosis model was successfully established by bilateral ovariectomy in the female rats. The proliferative and osteogenic differentiation potentials of bone marrow mesenchymal stem cells were dose-dependently enhanced by the different concentrations of calcitonin gene-related peptide. To conclude, the calcitonin gene-related peptide can increase bone formation by promoting the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells directly.

 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Bone Marrow, Mesenchymal Stem Cells, Calcitonin Gene-Related Peptide, Osteoporosis, Cell Proliferation, Tissue Engineering

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