中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (30): 4764-4770.doi: 10.3969/j.issn.2095-4344.2014.30.002

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

富血小板血浆复合软骨细胞构建可注射性组织工程化软骨

吴  俊,张  俊,刘锦波   

  1. 常州市第一人民医院骨科,江苏省常州市  213003
  • 修回日期:2014-04-18 出版日期:2014-07-16 发布日期:2014-08-08
  • 通讯作者: 刘锦波,主任医师,常州市第一人民医院骨科,江苏省常州市 213003
  • 作者简介:吴俊,男,1975年生,江苏省常州市人,汉族,苏州大学附属第一医院在读博士,副主任医师,主要从事关节外科研究。
  • 基金资助:

    常州市卫生局重大课题(2D2011008)

Platelet-rich plasma combined with chondrocytes for construction of injectable tissue-engineered cartilage

Wu Jun, Zhang Jun, Liu Jin-bo   

  1. Department of Orthopedics, First People’s Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
  • Revised:2014-04-18 Online:2014-07-16 Published:2014-08-08
  • Contact: Liu Jin-bo, Chief physician, Department of Orthopedics, First People’s Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
  • About author:Wu Jun, Studying for doctorate, Associate chief physician, Department of Orthopedics, First People’s Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
  • Supported by:

    the Major Project of Changzhou Health Bureau, No. 2D2011008

摘要:

背景:富血小板血浆中含有大量的生长因子,因此其在骨再生、创伤愈合等方面得到了较多的应用,然而其在组织工程软骨的研究报道较少。
目的:观察富血小板血浆对软骨细胞增殖和分化的影响,以及富血小板血浆复合软骨细胞构建组织工程化软骨的可行性。
方法:检测兔全血、富血小板血浆及激活富血小板血浆中转化生长因子β、胰岛素样生长因子1、血小板源性生长因子BB及表皮生长因子的浓度。将兔软骨细胞在分别含10%,15%,20%,30%富血小板血浆的DMEM培养液中培养7 d,CCK-8法检测细胞增殖,QT-PCR检测细胞内Ⅱ型胶原、蛋白聚糖、Sox-9的表达。在兔皮下注射自体富血小板血浆与软骨细胞复合物,6周后取材进行组织学检测。
结果与结论:富血小板血浆中各生长因子浓度高于全血(P < 0.05),激活富血小板血浆中各生长因子浓度高于富血小板血浆(P < 0.05)。不同浓度富血小板血浆均能促进软骨细胞的增殖,且20%浓度内呈浓度依赖性。20%浓度组促Ⅱ型胶原表达的能力强于其他浓度组(P < 0.05),15%浓度组促Sox-9和蛋白聚糖表达的能力强于其他浓度组(P < 0.05)。富血小板血浆-软骨细胞复合物移植后,新生组织呈软骨样并有明显的软骨陷窝,细胞外富含软骨样基质,表明其作为可注射性支架用于软骨组织工程。


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


全文链接:

关键词: 生物材料, 软骨生物材料, 富血小板血浆, 软骨细胞, 软骨组织工程, 组织再生, 生长因子

Abstract:

BACKGROUND: Owing to containing large amounts of growth factors, platelet-rich plasma has been widely used in bone regeneration, wound healing, and so on, while few studies have been reported on cartilage tissue engineering.
OBJECTIVE: To explore the effects of platelet-rich plasma on the proliferation and differentiation of chondrocytes, and the feasibility of constructing tissue-engineered cartilage by the combination of chondrocytes and platelet-rich plasma.
METHODS: We detected the concentrations of transforming growth factor-β, insulin-like growth factor-1, platelet-derived growth factor and epidermal growth factor BB in the whole blood, platelet-rich plasma, and activated platelet-rich plasma. The rabbit articular chondrocytes were cultured in 10%, 15%, 20%, 30% platelet-rich plasma for 7 days, then the cell proliferation was tested by cell counting kit-8, and cartilage-related genes (collagen type II, Aggrecan, Sox-9) were determined using QT-PCR. The chondrocytes/platelet-rich plasma composite was implanted subcutaneously into the rabbits, and the samples were harvested after 6 weeks of transplantation for histological examination.
RESULTS AND CONCLUSION: The levels of different growth factors in the platelet-rich plasma were higher than those in the whole blood (P < 0.05), but lower than those in the activated platelet-rich plasma (P < 0.05). Platelet-rich plasma at different concentrations promoted the proliferation of chondrocytes. When the 
concentration of platelet-rich plasma was no more than 20%, the proliferation of chondrocytes showed a concentration-dependent manner. The 20% platelet-rich plasma showed the best effects to promote the expression of collagen type II (P < 0.05), while the 15% platelet-rich plasma could maximize the expression of Sox-9 and Aggrecan  (P < 0.05). After transplantation of chondrocytes/platelet-rich plasma composite, cartilage-like tissue formed with cartilage lacuna-like structures, and rich extracellular matrix was found, which indicates platelet-rich plasma can be used as an injective scaffold in cartilage tissue engineering.


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


全文链接:

Key words: platelet-rich plasma, chondrocytes, tissue engineering, cartilage

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