中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (7): 1679-1686.doi: 10.12307/2026.521

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

脱钙骨基质负载脂肪源性干细胞修复兔桡骨节段性骨缺损

丁一凡1,尹文杰1,张  力1,袁淑娅2,孙国驹2,张乃丽1,赵冬梅1,马丽娜2   

  1. 1滨州医学院基础医学院人体解剖学教研室,山东省烟台市  264003;2滨州医学院第二临床医学院诊断学教研室,山东省烟台市  264003
  • 收稿日期:2024-11-14 修回日期:2025-03-06 接受日期:2025-03-19 出版日期:2026-03-08 发布日期:2025-08-19
  • 通讯作者: 马丽娜,讲师,滨州医学院第二临床医学院诊断学教研室,山东省烟台市 064003
  • 作者简介:丁一凡,男,1998年生,滨州医学院在读硕士,主要从事干细胞与组织修复研究。
  • 基金资助:
    山东省医药卫生科技发展计划项目(202104070826),项目负责人:马丽娜;山东医药卫生科技发展计划项目(202301021239),项目负责人:张乃丽;山东省自然科学基金项目(BS2015SW021),项目负责人:张乃丽;山东省大学生创新创业项目(S202310440046),项目负责人:孙国驹

Repair of segmental bone defect of rabbit radius by decalcified bone matrix loaded with adipose-derived stem cells

Ding Yifan1, Yin Wenjie1, Zhang Li1, Yuan Shuya2, Sun Guoju2, Zhang Naili1, Zhao Dongmei1, Ma Lina2   

  1. 1Department of Human Anatomy, School of Basic Medical Science, Binzhou Medical University, Yantai 264003, Shandong Province, China; 2Department of Diagnostics, Second School of Medicine, Binzhou Medical University, Yantai 264003, Shandong Province, China
  • Received:2024-11-14 Revised:2025-03-06 Accepted:2025-03-19 Online:2026-03-08 Published:2025-08-19
  • Contact: Ma Lina, Lecturer, Department of Diagnostics, Second School of Medicine, Binzhou Medical University, Yantai 264003, Shandong Province, China
  • About author:Ding Yifan, Master candidate, Department of Human Anatomy, School of Basic Medical Science, Binzhou Medical University, Yantai 264003, Shandong Province, China
  • Supported by:
    Medical and Health Science and Technology Development Project of Shandong Province, No. 202104070826 (to MLN); Medical and Health Science and Technology Development Project of Shandong Province, No. 202301021239 (to ZNL); Natural Science Foundation of Shandong Province, No. BS2015SW021 (to ZNL); Students’ Innovation and Entrepreneurship Training Program of Shandong Province, No. S202310440046 (to SGJ)

摘要:

文题释义:

脱钙骨基质:是人或动物的骨组织经深冻、脱脂、脱钙、去细胞处理而来,主要成分为Ⅰ型胶原。脱钙骨基质基本保存了天然骨的孔隙结构,而且抗原性低、生物相容性好,具备一定的骨诱导性,是临床常用的骨修复材料。
脂肪源性干细胞:是从脂肪组织中分离获得的一种具有自我更新、高度繁殖、多向分化潜能的多能干细胞,是修复组织或器官损伤的干细胞来源之一。

摘要
背景:脱钙骨基质是临床常用的骨修复材料,但在临床应用中发现存在成骨能力不足的问题,将脱钙骨基质与具有成骨潜力的细胞复合可有效提高成骨能力。
目的:探讨脱钙骨基质复合脂肪源性干细胞提高桡骨节段性骨缺损修复能力的可行性。
方法:以猪骨为原材料制备脱钙骨基质,采用酶解贴壁法体外分离、培养新西兰大白兔脂肪源性干细胞,流式细胞术检测细胞表型,并进行成骨、成脂诱导分化。将脂肪源性干细胞接种到脱钙骨基质复合培养3 d,倒置显微镜、扫描电镜观察脂肪源性干细胞在脱钙骨基质上的生长情况。取新西兰大白兔24只,随机分成4组,分别为空白对照组、脱钙骨基质组、脂肪源性干细胞-脱钙骨基质组和自体骨组,建立双侧桡骨节段缺损(12 mm)模型,按组别植入相应材料,术后4,8,12周通过拍摄X射线片、苏木精-伊红染色评价骨修复情况。

结果与结论:①培养的细胞贴壁聚集生长,呈长梭形,CD44、CD71高表达,CD34、CD45、CD106低表达;成骨诱导分化后茜素红染色可见被染成橘红色的矿化结节;成脂诱导分化后油红O染色可见细胞内染成鲜红色的脂滴;②脂肪源性干细胞紧密复合于脱钙骨基表面,生长状态良好,并向孔隙内部生长;③X射线片和组织学观察显示,脂肪源性干细胞-脱钙骨基质组新西兰大白兔骨缺损修复情况优于空白对照组、脱钙骨基质组,与自体骨组相当。结果表明,负载脂肪源性干细胞可有效弥补脱钙骨基质成骨能力的不足。

https://orcid.org/0000-0003-2048-1537(马丽娜)


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: 脂肪源性干细胞, 脱钙骨基质, 桡骨, 节段性骨缺损, 成骨, 新西兰大白兔, 组织工程

Abstract: BACKGROUND: Decalcified bone matrix is a commonly used bone repair material in clinical practice, but it has been found to have the problem of insufficient osteogenic ability in clinical application. Combining with cells with osteogenic potential can effectively improve the osteogenic ability of scaffolds.
OBJECTIVE: To investigate the feasibility of decalcified bone matrix combined with adipose-derived stem cells to improve the repair ability of radial segmental bone defects. 
METHODS: Decalcified bone matrix was prepared using porcine bone as raw material. Adipose-derived stem cells of New Zealand white rabbits were isolated and cultured in vitro by enzymatic hydrolysis and adherence method. Cell phenotypes were detected by flow cytometry, and osteogenic and adipogenic differentiation was performed. Then adipose-derived stem cells were seeded into decalcified bone matrix. Three days later, the growth of adipose-derived stem cells on decalcified bone matrix was observed by inverted microscope and scanning electron microscope. Twenty-four New Zealand white rabbits were used to establish bilateral radial segmental defects (12 mm), which were randomly divided into blank control group, decalcified bone matrix group, adipose-derived stem cells-decalcified bone matrix group, and autologous bone group. The corresponding materials were implanted according to the groups. X-ray examination and hematoxylin-eosin staining were used to evaluate bone repair at 4, 8, and 12 weeks after surgery. 
RESULTS AND CONCLUSION: (1) The cultured cells adhered to the wall and grew together in a long spindle shape, with high expression of CD44 and CD71 and low expression of CD34, CD45 and CD106. In cultured cells induced by osteogenic differentiation, alizarin red staining showed mineralized nodules stained orange-red. Lipid induced differentiation cultured cells were stained with oil red O, and bright red lipid droplets could be seen in the cells. (2) Adipose-derived stem cells were tightly compounded on the surface of decalcified bone matrix, with good growth status, and grew into the pores. (3) X-ray examination and histological observation showed that the repair of bone defects in adipose-derived stem cells-decalcified bone matrix group was better than that in the blank control group and decalcified bone matrix group. The results confirm that loading with adipose-derived stem cells can effectively compensate for the lack of osteogenic ability of decalcified bone matrix. 



Key words: adipose-derived stem cell, decalcified bone matrix, radius, segmental bone defect, osteogenesis, New Zealand rabbit, tissue engineering 

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