中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (13): 1969-1973.doi: 10.3969/j.issn.2095-4344.2017.13.001

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

持续加力和间歇加力对骨髓基质干细胞增殖和分化的影响

陈俊良1,2,何  芸1,2,肖金刚1,2   

  1. 1西南医科大学附属口腔医院口腔颌面外科,四川省泸州市  646000;2西南医科大学口颌面修复重建和再生实验室,四川省泸州市  646000
  • 修回日期:2017-03-11 出版日期:2017-05-08 发布日期:2017-06-09
  • 通讯作者: 何芸,硕士,副教授,西南医科大学附属口腔医院口腔颌面外科,四川省泸州市 646000;西南医科大学口颌面修复重建和再生实验室,四川省泸州市 646000
  • 作者简介:陈俊良,男,1981年生,四川省泸州市人,汉族,硕士,主治医师,主要从事口腔牙槽外科和口腔种植方面的研究。
  • 基金资助:

    国家自然科学基金项目(81371125);西南医科大学附属口腔医院课题(20130412)

Effect of continuous versus intermittent force on the proliferation and differentiation of bone marrow stromal stem cells

Chen Jun-liang1, 2, He Yun1, 2, Xiao Jin-gang1, 2   

  1. 1Department of Oral and Maxillofacial Surgery, the Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China; 2Orofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Revised:2017-03-11 Online:2017-05-08 Published:2017-06-09
  • Contact: He Yun, Master, Associate professor, Department of Oral and Maxillofacial Surgery, the Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China; Orofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Chen Jun-liang, Master, Attending physician, Department of Oral and Maxillofacial Surgery, the Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China; Orofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81371125; the Project of the Hospital of Stomatology, Southwest Medical University, No. 20130412

摘要:

文章快速阅读:


文题释义:
离心力:
实验选择离心力作为机械外力刺激,其可控性较高,可以准确地控制加力时间、频率和大小。离心力可以在一定程度上反映骨髓基质干细胞受到机械力学刺激作用,虽然无法完全模拟体内牵张成骨时的实际受力情况,但可以提供一定的理论参考。
碱性磷酸酶和骨钙素:碱性磷酸酶是骨形成过程中的重要功能性酶之一,是成骨细胞早期分化的标志。骨钙素是由成骨合成和分泌的维生素K依赖性钙结合蛋白,在基质钙化后能明显上调表达,促进钙与羟基磷灰石结合及随后在骨基质的沉积,是成骨细胞成熟的标志。碱性磷酸酶、骨钙素的表达程度可以反映骨的形成过程。

 

摘要
背景:
临床运用牵张成骨技术时常用的加力方式有2种:持续加力和间歇加力。但是,哪种方式更有利于新骨形成尚有争议。
目的:观察持续加力和间歇加力对骨髓基质干细胞分化及增殖能力的影响。
方法:密度梯度离心法分离培养兔骨髓基质干细胞,传至3代接种至6孔细胞培养板进行力学实验。空白组不作离心处理,静态培养;持续加力组每天加载离心4 h(1 100 r/min,相对离心力20×g);间歇加力组每次加载离心力24 min(1 100 r/min,相对离心力100×g),每天4 h内2次,2 h加力1次。力学刺激3 d停止培养,检测细胞增殖活性、碱性磷酸酶活性、骨钙素水平。  
结果与结论:①与空白组比较,机械离心力能促进骨髓基质干细胞成骨分化和增殖,增强碱性磷酸酶活性(P < 0.05);②持续加力较间歇加力对骨髓基质干细胞分化增殖及碱性磷酸酶活性影响更显著(P < 0.05)。

 

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:
0000-0003-3997-5668(陈俊良)

关键词: 干细胞, 骨髓干细胞, 骨髓基质干细胞, 牵张成骨, 骨组织工程, 机械离心力, 细胞增殖, 碱性磷酸酶, 骨钙素, 持续加力, 间隙加力, 国家自然科学基金

Abstract:

BACKGROUND: In the process of distraction osteogenisis, continuous and intermittent force can be used. However, which one is more beneficial for bone formation is still controversial.
OBJECTIVE: To investigate and compare the effect of continuous and intermittent force on the proliferation and differentiation of bone marrow stromal stem cells (BMSCs).
METHODS: Rabbit BMSCs were obtained using density gradient centrifugation method. The passage 3 BMSCs were seeded onto 6-well cell culture plates for mechanical investigation. Then, the cells were randomly divided into three groups. Group A was a control group without any treatments. Group B was the continuous force group with a centrifugal force (1 100 r/min, relative centrifugal force 20×g) applied 4 hours per day. Group C was the intermittent group with an centrifugal force (1 100 r/min, relative centrifugal force 100×g) applied twice in 4 hours and lasting 24 minutes once. After 3 days of culture under mechanical force, the proliferation of BMSCs and the expression of alkaline phosphatase and osteocalcin were detected and compared.
RESULTS AND CONCLUSION: The centrifugal force promoted the ostegenic differentiation and proliferation of BMSCs and the expression of alkaline phosphatase significantly increased compared with the control group (P < 0.05). Compared with the intermittent force, the continuous force showed better effect on osteogenic differentiation and proliferation of BMSCs as well as the activity of alkaline phosphatase (P < 0.05).

 

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, Mechanotransduction, Cellular, Cell Proliferation, Alkaline Phosphatase, Osteocalcin, Tissue Engineering

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