中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (23): 3630-3635.doi: 10.12307/2021.031

• 骨组织构建 bone tissue construction • 上一篇    下一篇

转化生长因子β和骨形成蛋白2联合诱导小鼠成骨细胞系MC3T3-E1细胞的增殖与分化

周  武1,王彬娉2,王雅雯2,程亚楠2,黄谢山1   

  1. 中南大学湘雅医学院附属海口医院口腔医学中心,1口腔颌面外科,2口腔特需-种植科,海南省海口市   570208
  • 收稿日期:2020-06-10 修回日期:2020-06-16 接受日期:2020-08-04 出版日期:2021-08-18 发布日期:2021-01-26
  • 通讯作者: 王彬娉,主任医师,中南大学湘雅医学院附属海口医院口腔医学中心,口腔特需-种植科,海南省海口市 570208
  • 作者简介:周武,男,1990年生,湖南省嘉禾县人,汉族,2019年中南大学湘雅医学院毕业,硕士,主要从事口腔生物材料、骨组织再生方面的研究。
  • 基金资助:
    海南省自然科学基金(20168313),项目负责人:王彬娉

Transforming growth factor beta combined with bone morphogenetic protein-2 induces the proliferation and differentiation of mouse MC3T3-E1 cells

Zhou Wu1, Wang Binping2, Wang Yawen2, Cheng Yanan2, Huang Xieshan1   

  1. 1Stomatology Center, 2Department of oral implantology, Affiliated Haikou Hospital of Xiangya Medical School, Central South University, Haikou 570208, Hainan Province, China
  • Received:2020-06-10 Revised:2020-06-16 Accepted:2020-08-04 Online:2021-08-18 Published:2021-01-26
  • Contact: Wang Binping, Chief physician, Department of oral implantology, Affiliated Haikou Hospital of Xiangya Medical School, Central South University, Haikou 570208, Hainan Province, China
  • About author:hou Wu, Master, Stomatology Center, Affiliated Haikou Hospital of Xiangya Medical School, Central South University, Haikou 570208, Hainan Province, China
  • Supported by:
    the Natural Science Foundation of Hainan Province, No. 20168313 (to WBP)

摘要:

文题释义:
转化生长因子β和骨形成蛋白2:两者都属于转化生长因子β家族,与骨组织代谢密切相关,二者在骨质形成、改建、修复的过程中发挥不同的调控作用。
生长因子联合诱导:是指将干细胞置于含有多种生长因子的培养基条件下培养,通过有目的的联合不同种类、浓度的生长因子达到模拟不同微环境下细胞的成熟分化情况。

背景:生长因子是骨组织形成、改建、修复的关键要素之一,多种生长因子联合诱导骨干细胞成骨分化相较于单一生长因子具有一定的优势,但是何种类型的联合、什么样的浓度组合才能发挥最佳的诱导作用?目前该方向研究较少。
目的:探索转化生长因子β和骨形成蛋白2联合诱导对小鼠MC3T3-E1细胞增殖和分化的影响。
方法:将不同质量浓度的转化生长因子β和骨形成蛋白2与小鼠MC3T3-E1细胞混合诱导培养,共设置6个组,含1个对照组和5个实验组。在不同时间点进行检测,MTT法检测细胞的增殖情况;实时定量RT-PCR检测Runx2、骨钙素基因表达;碱性磷酸酶染色观察成骨细胞活性及功能状态;茜素红染色观察钙结节形成的数量。
结果与结论:①转化生长因子β和骨形成蛋白2单独或联合使用时,都可以明显促进小鼠MC3T3-E1细胞增殖,促进Runx2、骨钙素基因的表达,增加碱性磷酸酶活性及矿化能力(P < 0.05);②两者联合使用时,在实验浓度范围内促成骨效果与浓度正相关,低浓度的联合能达到或优于单独使用的效果,联合质量浓度为1 μg/L转化生长因子β+100 μg/L骨形成蛋白2 是最优组;③提示转化生长因子β和骨形成蛋白2单独或联合诱导均能明显促进小鼠MC3T3-E1细胞增殖分化及成骨作用,二者联合诱导在增殖、分化的不同阶段既各自侧重又相互协同;在此次实验浓度范围内,1 μg/L转化生长因子β+100 μg/L骨形成蛋白2联合组为最优促进效果。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: MC3T3-E1细胞, 转化生长因子β, 骨形成蛋白2, 成骨, 细胞增殖, 细胞分化

Abstract: BACKGROUND: Growth factors are one of the key elements for bone formation, remodeling and repair. The combination of multiple growth factors to induce osteogenic differentiation of bone stem cells has certain advantages compared with single ones. However, what combination of concentrations can play the best inducing effect has not been fully documented.
OBJECTIVE: To explore the effects of transforming growth factor-β combined with bone morphogenetic protein-2 on the proliferation and differentiation of mouse MC3T3-E1 cells.
METHODS: Different concentrations of transforming growth factor-β and bone morphogenetic protein-2 were combined to cultivate MC3T3-E1 cells. The cells were then divided into six groups, including one control group and five experimental groups, and were tested at different time points. The proliferation of the cells was determined by MTT method. Real-time quantitative RT-PCR was used to detect Runx2 and osteocalcin gene expression. Alkaline phosphatase staining was used to observe the viability and function of osteoblasts. Alizarin red staining was used to observe the amount of calcium nodules.
RESULTS AND CONCLUSION: Whether transforming growth factor-β and bone morphogenetic protein-2 were used alone or in combination could significantly promote the proliferation of MC3T3-E1cells, promote the expression of Runx2 and osteocalcin, and increase the alkaline phosphatase activity and mineralization ability (P < 0.05). The osteogenic effect of two growth factors in combination was positively correlated with the concentration. Even the combination at a low concentration can achieve or surpass the effect of single use. The optimal combined concentration was 1 μg/L for transforming growth factor-β and 100 μg/L for bone morphogenetic protein-2. Therefore, transforming growth factor-β and bone morphogenetic protein-2 used alone or in combination can significantly promote the proliferation and osteogenesis of osteoblasts, which focus on different aspects and interact with each other at different stages of proliferation and differentiation. Within the concentration range of this study, 1 μg/L transforming growth factor-β plus 100 μg/L bone morphogenetic protein-2 show the best promotion effect.

Key words: MC3T3-E1 cells, transforming growth factor-β, bone morphogenetic protein-2, osteoblast, cell proliferation, cell differentiation

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