中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (21): 3143-3149.doi: 10.3969/j.issn.2095-4344.2016.21.015

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

京尼平交联脱细胞纤维环基质/壳聚糖水凝胶与兔纤维环源干细胞的生物相容性

刘 晨1,赵泉来1,王凌挺1,王 弘1,刘 平1,李 斌2,徐宏光1   

  1. 1皖南医学院弋矶山医院脊柱外科,安徽省芜湖市  2410012苏州大学附属第一医院骨科,江苏省苏州市  215007
  • 收稿日期:2016-03-22 出版日期:2016-05-20 发布日期:2016-05-20
  • 通讯作者: 徐宏光,教授,主任医师,皖南医学院弋矶山医院脊柱外科,安徽省芜湖市 241001 李斌,教授,苏州大学附属第一医院骨科,江苏省苏州市 215007
  • 作者简介:刘晨,男,1989 年生,安徽省巢湖市人,汉族,2015年苏州大学毕业,硕士,主要从事纤维环组织工程研究。
  • 基金资助:

    国家自然科学基金(81272048);安徽省自然科学基金(1308085MH152)

Biocompatibility of rabbit annulus fibrosus-derived stem cells with genipin cross-linked decellularized annulus fibrosus matrix/chitosan hydrogels

Liu Chen1, Zhao Quan-lai1, Wang Ling-ting1, Wang Hong1, Liu Ping1, Li Bin2, Xu Hong-guang1   

  1. 1Department of Spine Surgery, Yijishan Hospital of Wannan Medical University, Wuhu 241001, Anhui Province, China; 2Department of Orthopedics, First Affiliated Hospital of Suzhou University, Suzhou 215007, Jiangsu Province, China
  • Received:2016-03-22 Online:2016-05-20 Published:2016-05-20
  • Contact: Xu Hong-guang, Professor, Chief physician, Department of Spine Surgery, Yijishan Hospital of Wannan Medical University, Wuhu 241001, Anhui Province, China Li Bin, Professor, Department of Orthopedics, First Affiliated Hospital of Suzhou University, Suzhou 215007, Jiangsu Province, China
  • About author:Liu Chen, Master, Department of Spine Surgery, Yijishan Hospital of Wannan Medical University, Wuhu 241001, Anhui Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81272048; the Natural Science Foundation of Anhui Province, No. 1308085MH152

摘要:

 文章快速阅读:

 

文题释义:
脱细胞基质:
是运用化学、酶解或机械等方法去除组织中的细胞成分,而保存以细胞外基质为主的其他成分,不仅维持了原有的力学特性和生物学功能,还明显降低了支架的免疫原性。由于其保留了大量的细胞外基质和原有组织的部分结构,具有良好的生物相容性和可降解性,有利于各种细胞的黏附、扩增和分化同时,促进了组织再生,可作为生物组织工程的支架材料。但其力学性能较差,单独作为纤维环组织工程支架材料仍存在不足。
京尼平交联脱细胞纤维环基质/壳聚糖水凝胶:天然材料壳聚糖具有良好的生物相容性和较强的力学性能,有文献报道其分子结构近似于纤维环重要组成成分——聚集蛋白聚糖,通过生物交联剂京尼平将脱细胞基质与壳聚糖交联制备成水凝胶,可望成为纤维环修复的新型支架材料。

 

背景:为改善脱细胞基质的力学性能及降解不可控性,前期研究制备了京尼平交联脱细胞纤维环基质/壳聚糖水凝胶纤维环组织工程支架。
目的:观察京尼平交联脱细胞纤维环基质/壳聚糖水凝胶和纤维环源干细胞的生物相容性,以及京尼平交联脱细胞纤维环基质/壳聚糖水凝胶的体内降解情况。
方法:制备京尼平交联脱细胞纤维环基质/壳聚糖水凝胶,通过扫描电镜和接触角测试仪观察水凝胶内部结构及表面亲水性。将第1代兔纤维环源干细胞种植于京尼平交联脱细胞纤维环基质/壳聚糖水凝胶上3 d,行细胞骨架染色,通过倒置免疫荧光显微镜和扫描电镜观察细胞形态,并绘制细胞生长曲线。将京尼平交联脱细胞纤维环基质/壳聚糖水凝胶种植于新西兰大耳白兔肌间隙内,4周后观察水凝胶降解情况及与周围组织炎症反应。
结果与结论:京尼平交联脱细胞纤维环基质/壳聚糖水凝胶支架为多孔网状结构,接触角为(39.94±1.61)°;纤维环源干细胞黏附于京尼平交联脱细胞纤维环基质/壳聚糖水凝胶支架表面,增殖较快,生长状态良好,说明京尼平交联脱细胞纤维环基质/壳聚糖水凝胶具有良好的生物相容性。种植于兔体内的水凝胶支架在4周后有所降解,周围肌肉组织有炎症细胞存在。

ORCID: 0000-0003-4105-7823(徐宏光)

关键词: 生物材料, 材料相容性, 纤维环组织工程, 脱细胞基质, 壳聚糖, 水凝胶, 干细胞, 国家自然科学基金

Abstract:

BACKGROUND: To improve the mechanical properties and uncontrollability of degradation of decellularized matrix, we manufactured genipin cross-linked decellularized annulus fibrosus matrix/chitosan hydrogels as annulus fibrosus tissue-engineered scaffold.

OBJECTIVE: To observe the biocompatibility of annulus fibrosus-derived stem cells with genipin cross-linked decellularized annulus fibrosus matrix/chitosan hydrogels, and the degradation of hydrogels in vivo.

METHODS: Genipin cross-linked decellularized annulus fibrosus matrix/chitosan hydrogel scaffolds were prepared, and the internal structure and hydrophilic property of hydrogels was detected by scanning electron microscopy and contact angle meter, respectively. Afterwards, passage 1 rabbit annulus fibrosus-derived stem cells were seeded on the scaffolds for 3 days, cell morphology was observed by inverted immunofluorescence microscopy and scanning electron microscopy after cytoskeleton staining, and additionally, curve of cell growth was obtained. In the meanwhile, the scafflods were transplanted into the intermuscular space of New Zealand white rabbits, and the degradation and inflammatory reaction of the hydrogels were observed after 4 weeks.

RESULTS AND CONCLUSION: The prepared hydrogel scaffold showed porous and network structure and the contact angle was (39.94±1.61)°; annulus fibrosus-derived stem cells adhered well on the scaffold surface with a faster growth rate. Furthermore, at 4 weeks after transplantation, the hydrogel in vivo was degraded, and inflammatory cells appeared. These findings indicate that genipin cross-linked decellularized annulus fibrosus matrix/chitosan hydrogels have good biocompatibility.

 

Key words: Chitosan, Hydrogel, Stem Cells, Tissue Engineering

中图分类号: