中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (21): 3309-3315.doi: 10.3969/j.issn.2095-4344.1758

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

3D打印技术制备聚磷酸钙/淫羊藿苷骨支架诱导骨髓间充质干细胞成骨分化治疗骨缺损

石永新1,逄增金2,羊明智3,彭立军3,李富琴1,宋 晖1,罗福薇4   

  1. 1中国科学院大学深圳医院(光明),广东省深圳市 518106;2深圳市宝安区松岗人民医院,广东省深圳市 518105;3南华大学附属第一医院,湖南省衡阳市 421001;4深圳市妇幼保健院,广东省深圳市 518017
  • 修回日期:2019-03-16 出版日期:2019-07-28 发布日期:2019-07-28
  • 通讯作者: 李富琴,硕士,主管技师,中国科学院大学深圳医院(光明),广东省深圳市 518106
  • 作者简介:石永新,男,1984年生,甘肃省成县人,汉族,2010年南华大学毕业,硕士,主治医师,主要从事骨与关节损伤的研究。
  • 基金资助:

    2018广东省中医药局建设专项资金立项资助科研课题(20181239),项目负责人:石永新;深圳市宝安区科创局医疗卫生基础研究项目(2017JD071),项目负责人:逄增金

A 3D-printed calcium polyphosphate/icariin bone scaffold induces osteogenic differentiation of bone marrow mesenchymal stem cells for treating bone defects

Shi Yongxin1, Pang Zengjin2, Yang Mingzhi3, Peng Lijun3, Li Fuqin1, Song Hui1, Luo Fuwei4   

  1. 1Shenzhen Hospital, University of Chinese Academy of Sciences, Shenzhen 518106, Guangdong Province, China; 2Songgang People’s Hospital, Shenzhen 518105, Guangdong Province, China; 3the First Affiliated Hospital of University of South China, Hengyang 421001, Hunan Province, China; 4Shenzhen Maternity & Child Healthcare Hospital, Shenzhen 518017, Guangdong Province, China
  • Revised:2019-03-16 Online:2019-07-28 Published:2019-07-28
  • Contact: Li Fuqin, Master, Technologist-in-charge, Shenzhen Hospital, University of Chinese Academy of Sciences, Shenzhen 518106, Guangdong Province, China
  • About author:Shi Yongxin, Master, Attending physician, Shenzhen Hospital, University of Chinese Academy of Sciences, Shenzhen 518106, Guangdong Province, China
  • Supported by:

    Special Fund for Scientific Research of Guangdong Provincial Traditional Chinese Medicine Bureau, No. 20181239 (to SYX); Health Foundation Research Project of Baoan District Science and Technology Innovation Bureau, Shenzhen, No. 2017JD071 (to PZJ)

摘要:

文章快速阅读:

文题释义:
聚磷酸钙:
是一种新型的骨修复材料,具有长链结构,在动物体内10 d可降解分化,聚磷酸钙支架具有良好的骨诱导性和优良的可控降解性,在体内生物相容性良好,其降解断链可释放出细胞活动所需的能量,降解产物为可溶性钙盐、磷酸盐和游离的钙、磷离子,不会引起局部炎性反应;同时作为骨修复材料,聚磷酸钙也具有理想的力学强度,可用于修复骨组织缺损,也可作为支架材料用于组织工程,在人体骨组织缺损修复方面具有良好的应用前景。
淫羊藿苷:为箭叶淫羊藿、巫山淫羊藿、柔毛淫羊藿等干燥茎叶提取物,呈淡黄色针状结晶粉末,具有补肾壮阳、抗衰老等功效,还具有促进造血功能、增加心脑血管血流量、免疫功能和骨代谢功能,可促进骨髓间充质干细胞增殖和成骨分化。

 

摘要
背景:
随着组织工程学的快速发展,寻找最佳的支架材料、诱导细胞成骨分化的因子以及分化增殖能力强、来源充足的干细胞,成为骨科领域研究的热点。
目的:探讨聚磷酸钙/淫羊藿苷骨支架诱导骨髓间充质干细胞成骨分化治疗骨缺损的效果。
方法:采用3D打印技术制备聚磷酸钙/淫羊藿苷复合骨支架,分离和培养兔骨髓间充质干细胞。36只新西兰大白兔根据随机数字法分为对照组和实验组,每组18只,均建立股骨髁骨缺损模型并植入聚磷酸钙/淫羊藿苷骨支架复合体,然后实验组大白兔经股静脉注入骨髓间充质干细胞1.5 mL(1×109 L-1),对照组大白兔经股静脉注入等量生理盐水。术后4,8,12周每组取6只大白兔,分离培养骨髓间充质干细胞,Transwell小室测定骨髓间充质干细胞迁移能力,qRT-PCR法测定骨髓间充质干细胞Ⅰ型胶原蛋白、CD44 mRNA水平;然后取兔股骨髁标本,X射线片观察复合骨支架以及周围骨痂形成情况,Van-Gieson染色观察骨组织学变化,免疫组化染色法测定骨痂神经生长因子水平。
结果与结论:①实验组兔骨髓间充质干细胞迁移数均高于对照组(P < 0.05);实验组兔骨髓间充质干细胞Ⅰ型胶原蛋白、CD44 mRNA水平均高于对照组(P < 0.05);②X射线检查和组织学观察结果显示实验组骨痂形成速度和效果优于对照组;③实验组骨痂神经生长因子水平均高于对照组(P < 0.05);④结果表明3D打印技术制备的聚磷酸钙/淫羊藿苷骨支架可诱导骨髓间充质干细胞向成骨细胞分化,在骨缺损治疗中具有较好效果。


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:
0000-0002-4799-0318(石永新)

关键词: 股骨髁, 骨缺损, 聚磷酸钙, 淫羊藿苷, 复合骨支架, 3D打印技术, 骨髓间充质干细胞, 成骨分化

Abstract:

BACKGROUND: With the rapid development of tissue engineering, seeking for optimal scaffold materials, osteogenic factors and abundant stem cells with strong differentiation and proliferation potential has been an issue of concern in the field of orthopedics.
OBJECTIVE: To explore the effect of calcium polyphosphate/icariin bone scaffold to induce osteogenic differentiation of bone marrow mesenchymal stem cells for the treatment of bone defects.
METHODS: The CPP/ICA composite bone scaffold was prepared using 3D printing technology. The rabbit bone marrow mesenchymal stem cells were isolated and cultured. Bone defect models were made in 36 New Zealand white rabbits, and equally randomized into control group and experimental group, followed by implantation of calcium polyphosphate/icariin composite bone scaffold. Afterwards, in the experimental group, 1.5 mL of bone marrow mesenchymal stem cells (1×109/L) was injected through the femoral vein into the rabbits, while the rabbits in the control group were given the same amount of normal saline via the femoral vein. At 4, 8 and 12 weeks postoperatively, six rabbits from each group were taken to isolate and culture bone marrow mesenchymal stem cells. Transwell chamber assay was used to measure the migration ability of bone marrow mesenchymal stem cells. Fluorescence quantification-reverse transcriptase polymerase chain reaction was used to determine the type I collagen and CD44 mRNA levels in the cells. Rabbit femoral condyle specimens were taken, and X-ray films were used to observe the formation of epiphyses around the composite scaffold. Van-Gieson staining was used to observe the histological changes of bone tissues. Immunohistochemical staining was used to determine the level of epiphyseal nerve growth factors.
RESULTS AND CONCLUSION: The number of migrated bone marrow mesenchymal stem cells was significantly higher in the experimental group than the control group (P < 0.05). The type I collagen and CD44 mRNA levels in the cells were also higher in the experimental group than the control group (P < 0.05). Findings from X-ray examination and histological observation showed more osteophytes in the experimental group than the control group. The level of epiphyseal nerve growth factors in the experimental group was significantly higher than that in the control group (P < 0.05). To conclude, the calcium polyphosphate/icariin bone scaffold prepared by 3D printing technology can induce the osteogenic differentiation of bone marrow mesenchymal stem cells, and has a good effect in the treatment of bone defects.

Key words: femoral condyle, bone defect, calcium polyphosphate, icariin, composite bone scaffold, 3D printing technology, bone marrow mesenchymal stem cells, osteogenic differentiation

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