中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (10): 1527-1531.doi: 10.3969/j.issn.2095-4344.2017.10.009

• 药物控释材料 drug delivery materials • 上一篇    下一篇

异种骨/重组人骨形态发生蛋白7/纤维蛋白胶复合材料的缓释性能及成骨活性

张建华   

  1. 河北沧州中西医结合医院,河北省沧州市  061000
  • 收稿日期:2016-11-17 出版日期:2017-04-08 发布日期:2017-05-08
  • 作者简介:张建华,男,1980年生,河北省沧州市人,汉族,主治医师,主要从事关节疾病研究。

Sustained release ability and osteogenic activity of xenogeneic bone/recombinant human bone morphogenetic protein 7/fibrin glue composite material

Zhang Jian-hua   

  1. Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Cangzhou 061000, Hebei Province, China
  • Received:2016-11-17 Online:2017-04-08 Published:2017-05-08
  • About author:Zhang Jian-hua, Attending physician, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Cangzhou 061000, Hebei Province, China

摘要:

文章快速阅读:

 

 

文题释义:
骨形态发生蛋白
:是现今已知作用最强的骨诱导因子,在促进骨缺损修复和骨折愈合过程中有非常明显的效果。骨形态发生蛋白的稳定缓慢释放是其诱导成骨作用的前提,骨形态发生蛋白在体内很容易被体液稀释或各种蛋白酶降解,因此,需要合适的载体使骨形态发生蛋白缓慢释放;然而,迄今为止还没有一种医学界公认的骨形态发生蛋白理想载体。
异种骨/重组人骨形态发生蛋白7/纤维蛋白胶复合材料:利用异种骨支架材料的孔隙三维结构与自体骨相近,利于血管等长入及骨形态发生蛋白黏附的特性,同时发挥异种骨移植物的支架材料骨传导作用,采用真空负压吸附方法将重组人骨形态发生蛋白7负压吸附在异种骨支架材料上;然后再利用纤维蛋白胶的黏合力强、生物相容性好、抗原性弱、易于降解等特性,将异种骨材料及纤维蛋白胶二者结合,更利于发挥异种骨复合材料作为骨形态发生蛋白载体的缓释作用,具有理论及实际操作上的可行性和实用性。


背景:骨形态发生蛋白的稳定缓慢释放是其诱导成骨作用的前提,因此需要合适的载体使骨形态发生蛋白缓慢释放,然而迄今为止还没有一种医学界公认的骨形态发生蛋白理想载体。
目的:评价异种骨复合材料中骨形态发生蛋白7的缓释情况及成骨活性。
方法:以异种小牛松质骨为支架材料,采用真空负压吸附法将含重组人骨形态发生蛋白7的溶液吸附在支架材料上,再喷涂纤维蛋白胶涂层,制备异种骨/重组人骨形态发生蛋白7/纤维蛋白胶复合材料,作为实验组材料;将小牛松质骨、小牛松质骨/重组人骨形态发生蛋白7复合材料分别作为空白组、对照组材料。将3组材料分别在PBS中持续浸泡28 d,观察重组人骨形态发生蛋白7的缓释情况;将3种材料分别与第3代髓间充质干细胞共培养,检测培养1,3,7,14 d的细胞碱性磷酸酶活性、骨桥蛋白和骨钙素表达水平。
结果与结论:①空白组无重组人骨形态发生蛋白7释放,实验组重组人骨形态发生蛋白7的缓释效果优于对照组;②实验组、对照组培养不同时间点的碱性磷酸酶活性、骨桥蛋白和骨钙素表达水平均高于空白组(P < 0.05),实验组培养14 d的细胞碱性磷酸酶活性、骨桥蛋白和骨钙素表达水平均高于对照组(P < 0.05);③结果表明:异种骨/重组人骨形态发生蛋白7/纤维蛋白胶复合材料具有良好的缓释性能及成骨活性。

ORCID: 0000-0003-2353-5481(张建华)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

关键词: 生物材料, 骨生物材料, 异种骨, 复合物, 骨形态发生蛋白, 缓释, 成骨活性

Abstract:

BACKGROUND: Sustained release of bone morphogenetic proteins (BMPs) at stable speed is a prerequisite for osteogenic induction. Therefore, a suitable carrier for the sustained release of BMPs is required. However, there is no ideal carrier for BMPs as yet.
OBJECTIVE: To explore the sustained release process of BMP-7 and osteogenic activity in the xenogeneic bone composite that is the compound of xenogeneic bone, recombinant human BMP-7 (rhBMP-7) and fibrin sealant (FS).
METHODS: With the xenogeneic cattle spongy bone as a scaffold material, the solution containing rhBMP-7 was adsorbed onto the scaffold by means of vacuum negative pressure absorption, and fibrin sealant (FS) was sprayed onto the surface of the scaffold. The xenogeneic bone composite was made up of these three materials as sustained release materials. All scaffold materials were randomly divided into three groups: blank group (the scaffold material was xenogeneic bone with no rhBMP-7 and FS), control group (the scaffold material was xenogeneic bone with rhBMP-7) and experimental group (the scaffold material was the composite material of xenogeneic bone, rhBMP-7 and FS). All samples were immerged into phosphate buffer solution for 28 continuous days, and the release levels of rhBMP-7 from the samples were measured by high performance liquid chromatography at various set time. All the scaffold materials were co-cultured with passage 3 bone marrow mesenchymal stem cells. Alkaline phosphatase activity, osteopontin and osteocalcin expression levels were detected at days1, 3, 7, and 14 after co-culture
RESULTS AND CONCLUSION: rhBMP-7 was not detected in the blank control group, and the sustained release of rhBMP-7 in the experimental group was better than that in the control group. The alkaline phosphatase activity, osteopontin and osteocalcin levels were ranked as follows: blank control group < control group < experimental group, and there was a significant difference between groups (P < 0.05). These findings indicate that the xenogeneic bone/rhBMP-7/FS composite material as a good sustained-release carrier of BMP-7 shows strong osteogenic activity.

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Bone Morphogenetic Protein 7, Fibrin Tissue Adhesive, Delayed-Action Preparations, Tissue Engineering

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