中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (13): 1976-1981.doi: 10.3969/j.issn.2095-4344.2188

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

血小板衍生生长因子BB促进SD大鼠骨髓间充质干细胞的增殖

姜  涛1,吴  硕2,李志强1,寿  玺1,马依热·努尔买卖提1,马  创2,魏  琴1   

  1. 1新疆医科大学动物实验中心,新疆医学动物模型研究重点实验室,新疆维吾尔自治区乌鲁木齐市   830011;2新疆医科大学第一附属医院骨科中心,新疆维吾尔自治区乌鲁木齐市   830054
  • 收稿日期:2020-03-12 修回日期:2020-03-18 接受日期:2020-05-16 出版日期:2021-05-08 发布日期:2020-12-28
  • 通讯作者: 魏琴,硕士,实验师,新疆医科大学动物实验中心,新疆医学动物模型研究重点实验室,新疆维吾尔自治区乌鲁木齐市 830011
  • 作者简介:姜涛,男,1980年生,新疆维吾尔自治区乌鲁木齐市人,汉族,2012年新疆农业大学毕业,硕士,高级实验师,主要从事动物实验研究。
  • 基金资助:
    新疆维吾尔自治区自然科学基金 (2016D01C287),项目负责人:魏琴

Platelet-derived growth factor BB promotes the proliferation of bone marrow mesenchymal stem cells of Sprague-Dawley rats

Jiang Tao1, Wu Shuo2, Li Zhiqiang1, Shou Xi1, Mayire·Nuermaimaiti1, Ma Chuang2, Wei Qin1   

  1. 1Laboratory Animal Center of Xinjiang Medical University, Xinjiang Key Laboratory of Medical Animal Model Research, Urumqi 830011, Xinjiang Uygur Autonomous Region, China; 2Department of Orthopedics Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Received:2020-03-12 Revised:2020-03-18 Accepted:2020-05-16 Online:2021-05-08 Published:2020-12-28
  • Contact: Wei Qin, Master, Experimentalist, Laboratory Animal Center of Xinjiang Medical University, Xinjiang Key Laboratory of Medical Animal Model Research, Urumqi 830011, Xinjiang Uygur Autonomous Region, China
  • About author:Jiang Tao, Master, Senior experimentalist, Laboratory Animal Center of Xinjiang Medical University, Xinjiang Key Laboratory of Medical Animal Model Research, Urumqi 830011, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    the Natural Science Foundation of Xinjiang Uygur Autonomous Region, No. 2016D01C287 (to WQ)

摘要:

文题释义:
骨髓间充质干细胞:是目前组织工程骨研究领域内最成熟也是运用最多的种子细胞,已经证实具有多向分化潜能,可以向成骨细胞、破骨细胞、成软骨细胞、成脂细胞、成血管细胞等分化,并具有自身免疫原性弱、操作方便等特点。
血小板衍生生长因子BB:血小板衍生生长因子最初从血小板中分离出来,是间充质干细胞迁移和增殖的关键生长因子。血小板衍生生长因子BB是血小板衍生生长因子家族中的一员,主要由血小板、内皮细胞、巨噬细胞产生,有研究报道通过小鼠实验由前破骨细胞分泌的血小板衍生生长因子BB可以促进成骨细胞和血管内皮细胞的形成。

背景:研究报道小鼠前破骨细胞分泌的血小板衍生生长因子BB可以促进成骨细胞和成血管细胞形成,而应用血小板衍生生长因子BB干预骨髓间充质干细胞的最佳浓度及最佳时间尚不明确。
目的:探讨血小板衍生生长因子BB对SD大鼠骨髓间充质干细胞增殖作用的最佳干预质量浓度及最佳干预时间。
方法:体外分离培养SD大鼠骨髓间充质干细胞,第3代细胞经流式鉴定其表面标记物CD45、CD29和CD34,选用纯度较高的骨髓间充质干细胞进行干预实验。将筛选好的细胞接种于96孔培养板中,对照组骨髓间充质干细胞用α-MEM完全培养基培养,其余各组在此基础上加入6.25,12.5,25,50,100 μg/L血小板衍生生长因子BB。干预1,3,5,7 d采用CCK-8法检测细胞增殖情况,筛选出血小板衍生生长因子BB干预骨髓间充质干细胞的最佳时间及质量浓度。
结果与结论:①经流式鉴定:CD29呈阳性表达(94.6%),CD45呈阴性表达(3.3%),CD34呈阴性表达(0.2%),得到纯度较高的大鼠骨髓间充质干细胞;②采用重复测量方差分析,不同时间点间血小板衍生生长因子BB干预骨髓间充质干细胞的吸光度值改变不同,第3天增殖效果最强,差异有显著性意义(F=27.773,P < 0.001),进一步采用LSD法对分组因素进行两两比较,25 μg/L 血小板衍生生长因子BB组与其他5组比较差异均有显著性意义(P < 0.05);③结果表明,25 μg/L血小板衍生生长因子BB干预第3天对骨髓间充质干细胞有明显促增殖作用,血小板衍生生长因
https://orcid.org/0000-0003-0344-8305(魏琴) 

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

关键词: 干细胞, 骨髓间充质干细胞, 血小板衍生生长因子, 细胞增殖, 大鼠, 实验

Abstract: BACKGROUND: It has been reported that platelet-derived growth factor BB secreted by mouse osteoclasts can promote the formation of osteoblasts and vascular cells, but the optimal concentration and time of platelet-derived growth factor BB on bone marrow mesenchymal stem cells are not clear. 
OBJECTIVE: To investigate the optimal concentration and intervention time of platelet-derived growth factor BB to promote the proliferation of bone marrow mesenchymal stem cells in Sprague-Dawley rats. 
METHODS:  Sprague-Dawley rat bone marrow mesenchymal stem cells were isolated and cultured in vitro. The third generation of cells was identified by surface cytometry CD45, CD29 and CD34, and bone marrow mesenchymal stem cells with higher purity were selected for intervention experiments. The selected cells were seeded in 96-well culture plates. Cells in the control group were cultured with α-MEM complete medium. Cells in the remaining groups were cultured with α-MEM complete medium combined with 6.25, 12.5, 25, 50, and 100 μg/L platelet-derived growth factor BB. CCK-8 method was used to detect the proliferation of cells in each group at 1, 3, 5, and 7 days, and the optimal time and concentration of platelet-derived growth factor BB for bone marrow mesenchymal stem cells intervention. 
RESULTS AND CONCLUSION: (1) Flow cytometry: mesenchymal stem cells were positive for CD29 (94.6%), negative for CD45 (3.3%), and negative for CD34 (0.2%). Rat bone marrow mesenchymal stem cells with higher purity were obtained. (2) Repeated measurement analysis of variance showed that the absorbance of platelet-derived growth factor BB changed at different times after intervention with bone marrow mesenchymal stem cells. The proliferation effect was the strongest on the third day, and the difference was statistically significant (F=27.773, P < 0.001). LSD method for a pairwise comparison of the grouping factors showed that 25 μg/L platelet-derived growth factor BB group had statistically significant differences with the other five groups (P < 0.05). (3) It was concluded that the 25 μg/L platelet-derived growth factor BB group intervened bone marrow mesenchymal stem cells had a proliferation effect on cells on the third day. Platelet-derived growth factor BB concentration greater than 50 μg/L can promote apoptosis.

Key words: stem cells, bone marrow mesenchymal stem cells, platelet-derived growth factor, cell proliferation, rats, experiment

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