中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (13): 3343-3349.doi: 10.12307/2026.014

• 牙髓及牙周膜干细胞 Dental pulp and periodontal ligament stem cells • 上一篇    下一篇

负载碱性成纤维细胞生长因子复合性生物支架对牙髓干细胞成血管性能的影响

史雨馨1,开吾赛尔·吐尔逊1,刘  佳1,2   

  1. 1新疆医科大学第一附属医院(附属口腔医院)儿童口腔科-口腔预防科,新疆维吾尔自治区乌鲁木齐市   830054;2 新疆维吾尔自治区口腔医学研究所,新疆维吾尔自治区乌鲁木齐市   830054
  • 接受日期:2025-04-17 出版日期:2026-05-08 发布日期:2025-12-25
  • 通讯作者: 刘佳,博士,主任医师,副教授,硕士生导师,新疆医科大学第一附属医院(附属口腔医院)儿童口腔科-口腔预防科,新疆维吾尔自治区乌鲁木齐市 830054;新疆维吾尔自治区口腔医学研究所,新疆维吾尔自治区乌鲁木齐市 830054
  • 作者简介:史雨馨,女,1999 年生,新疆维吾尔自治区乌鲁木齐市人,汉族,新疆医科大学在读硕士,主要从事儿童口腔学及牙齿再生方向的研究。
  • 基金资助:
    新疆维吾尔自治区研究生实践创新项目 (XJ2023G176),项目参与人:史雨馨,开吾赛尔·吐尔逊

Effects of basic fibroblast growth factor-loaded composite bioscaffold on angiogenesis of dental pulp stem cells

Shi Yuxin1, Kaiwusail · Tursun1, Liu Jia1, 2   

  1. 1Department of Children’s Stomatology-Department of Stomatological Prevention, First Affiliated Hospital of Xinjiang Medical University (Affiliated Stomatological Hospital), Urumqi 830054, Xinjiang Uygur Autonomous Region, China; 2Xinjiang Uyghur Autonomous Region Institute of Stomatology, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Accepted:2025-04-17 Online:2026-05-08 Published:2025-12-25
  • Contact: Liu Jia, MD, Chief physician, Associate professor, Master’s supervisor, Department of Children’s Stomatology-Department of Stomatological Prevention, First Affiliated Hospital of Xinjiang Medical University (Affiliated Stomatological Hospital), Urumqi 830054, Xinjiang Uygur Autonomous Region, China; Xinjiang Uyghur Autonomous Region Institute of Stomatology, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • About author:Shi Yuxin, Master candidate, Department of Children’s Stomatology-Department of Stomatological Prevention, First Affiliated Hospital of Xinjiang Medical University (Affiliated Stomatological Hospital), Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    Graduate Practice Innovation Project of Xinjiang Uygur Autonomous Region, No. XJ2023G176 (to SYX and KT)

摘要:

文题释义:

碱性成纤维细胞生长因子:是一种多功能的肝素结合蛋白,能显著促进内皮细胞的增殖与迁移,同时还可以促进骨的形成和修复以及新血管的形成。
牙髓干细胞:作为间充质干细胞的一种,有较强的自我更新能力和广泛的分化潜能,是组织工程中实现牙髓再生的关键来源细胞。

摘要
背景:前期研究证明,一定比例的甲基丙烯酸酐改性明胶(gelatin-methacryloyl,GelMA)与经处理牙本质基质(treated dentin matrix,TDM)复合生物支架具有良好的生物学性能,有利于细胞的增殖与黏附。负载碱性成纤维细胞生长因子(basic fibroblast growth factor,bFGF)的复合性生物支架为牙髓再血管化提供了新思路。
目的:观察负载bFGF的GelMA/TDM复合生物支架对人牙髓干细胞增殖、迁移及成血管性能的影响。
方法:制备负载0,50,100,200,500 ng/mL bFGF的GelMA/TDM复合支架,通过CCK-8检测牙髓干细胞增殖能力并筛选bFGF的最佳质量浓度,然后将牙髓干细胞分3组处理,分别为GelMA/TDM组、 bFGF-GelMA/TDM组、空白对照组。划痕实验检测牙髓干细胞的迁移能力,Matrigel小管形成实验检测牙髓干细胞成管分支点数量,免疫荧光染色检测牙髓干细胞中血管内皮生长因子蛋白的表达,qPCR检测牙髓干细胞中成血管相关基因(血管内皮生长因子、转化生长因子β、肝配蛋白B2)的表达。
结果与结论:①CCK-8检测结果显示培养3,5 d时,负载bFGF的GelMA/TDM复合支架均可促进牙髓干细胞的增殖,其中bFGF(100 ng/mL)-GelMA/TDM复合支架的促增殖作用最明显;②细胞划痕实验显示bFGF(100 ng/mL)-GelMA/TDM复合支架组细胞迁移面积明显大于GelMA/TDM组和空白对照组;③Matrigel小管形成实验显示,bFGF(100 ng/mL)-GelMA/TDM复合支架组成管分支点数量大于GelMA/TDM组和空白对照组;④免疫荧光实验显示,bFGF(100 ng/mL)-GelMA/TDM复合支架组血管内皮生长因子阳性平均吸光度值高于GelMA/TDM组和空白对照组;⑤qPCR实验显示,bFGF(100 ng/mL)-GelMA/TDM复合支架组成血管相关基因血管内皮生长因子、转化生长因子β、肝配蛋白B2的表达高于GelMA/TDM组和空白对照组。结果表明,bFGF(100 ng/mL)-GelMA/TDM复合支架表现出较好的促牙髓干细胞增殖、迁移和成血管分化能力。

关键词: 人牙髓干细胞, 碱性成纤维细胞生长因子, 细胞增殖, 复合性生物支架, 成血管, 组织工程

Abstract: BACKGROUND: Previous studies have shown that composite scaffolds prepared from a certain proportion of gelatin-methacryloyl and treated dentin matrix exhibit excellent biological properties, which are beneficial for cell proliferation and adhesion. Composite biological scaffolds loaded with basic fibroblast growth factor provide a new idea for dental pulp revascularization.
OBJECTIVE: To observe the effect of gelatin-methacryloyl/treated dentin matrix composite biological scaffold loaded with basic fibroblast growth factor on the proliferation, migration, and angiogenic properties of human dental pulp stem cells.
METHODS: Composite biological scaffolds loaded with 0, 50, 100, 200, and 500 ng/mL of basic fibroblast growth factor were prepared. The proliferation ability of dental pulp stem cells was detected by CCK-8 assay and the optimal mass concentration of basic fibroblast growth factor was screened. The dental pulp stem cells were divided into three groups, namely gelatin-methacryloyl/treated dentin matrix group, basic fibroblast growth factor- gelatin-methacryloyl/treated dentin matrix group, and blank control group. The scratch assay was used to detect the migration ability of dental pulp stem cells. Matrigel tubule formation assay was used to detect the number of branch points of dental pulp stem cell tubules. The immunofluorescence staining was used to detect the expression of vascular endothelial growth factor protein in dental pulp stem cells. qPCR was used to detect the expression of angiogenesis-related genes (vascular endothelial growth factor, transforming growth factor β, and ephrin B2) in dental pulp stem cells.
RESULTS AND CONCLUSION: (1) CCK-8 assay showed that the gelatin-methacryloyl/treated dentin matrix composite scaffolds loaded with basic fibroblast growth factor could promote the proliferation of dental pulp stem cells at 3 and 5 days of culture, among which the proliferation-promoting effect of basic fibroblast growth factor (100 ng/mL)- gelatin-methacryloyl/treated dentin matrix composite scaffold was the most obvious. (2) Cell scratch assay showed that the cell migration area of basic fibroblast growth factor (100 ng/mL)-gelatin-methacryloyl/treated dentin matrix composite scaffold group was significantly larger than that of gelatin-methacryloyl/treated dentin matrix group and blank control group. (3) Matrigel tubule formation assay showed that the number of branch points of basic fibroblast growth factor (100 ng/mL)-gelatin-methacryloyl/treated dentin matrix composite scaffold was greater than that of gelatin-methacryloyl/treated dentin matrix and blank control groups. (4) Immunofluorescence assay showed that the average positive absorbance value of vascular endothelial growth factor in basic fibroblast growth factor (100 ng/mL)-gelatin-methacryloyl/treated dentin matrix composite scaffold group was higher than that of gelatin-methacryloyl/treated dentin matrix and blank control groups. (5) qPCR assay showed that the expression of vascular endothelial growth factor, transforming growth factor β, and ephrin B2 in the basic fibroblast growth factor (100 ng/mL)-gelatin-methacryloyl/treated dentin matrix composite scaffold group was higher than that in the gelatin-methacryloyl/treated dentin matrix and blank control groups. The results showed that basic fibroblast growth factor (100 ng/mL)-gelatin-methacryloyl/treated dentin matrix composite scaffold exhibited good ability to promote the proliferation, migration, and angiogenesis of dental pulp stem cells.

Key words: human dental pulp stem cell, alkaline fibroblast growth factor, cell proliferation, composite bioscaffold, angiogenesis, tissue engineering

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