中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (32): 8420-8426.doi: 10.12307/2026.420

• 水凝胶材料Hydrogel materials • 上一篇    下一篇

海藻酸钠-羟基磷灰石-氧化石墨烯水凝胶的制备及细胞相容性

李轩泽1,2,方汉洪3,徐  哲4   

  1. 华中科技大学同济医学院附属武汉中心医院,1急诊创伤外科,2分子诊断湖北省重点实验室,湖北省武汉市   430014;3华中科技大学同济医学院附属协和医院骨科,湖北省武汉市   430022;4贵航贵阳医院骨科,贵州省贵阳市   550009
  • 接受日期:2025-12-30 出版日期:2026-11-18 发布日期:2026-04-27
  • 通讯作者: 徐哲,硕士,主治医师,贵航贵阳医院骨科,贵州省贵阳市 550009
  • 作者简介:李轩泽,男,1994年生,湖北省咸宁市人,汉族,硕士,主治医师,主要从事骨组织工程、生物材料方面的研究。
  • 基金资助:
    贵州省科技厅计划项目(黔科合基础-ZK[2023]一般532),项目负责人:徐哲;贵阳市科技计划项目(筑科合同[2024]2-33号),项目负责人:徐哲;通用医疗科学技术基金(TYYLKYJJ-2023-036),项目负责人:徐哲

Preparation and cytocompatibility of sodium alginate-hydroxyapatite-graphene oxide hydrogels

Li Xuanze1, 2, Fang Hanhong3, Xu Zhe4   

  1. 1Department of Emergency and Trauma Surgery, 2Key Laboratory for Molecular Diagnosis of Hubei Province, Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, Hubei Province, China; 3Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China; 4Department of Orthopedics, Guihang Guiyang Hospital, Guiyang 550009, Guizhou Province, China
  • Accepted:2025-12-30 Online:2026-11-18 Published:2026-04-27
  • Contact: Xu Zhe, MS, Attending physician, Department of Orthopedics, Guihang Guiyang Hospital, Guiyang 550009, Guizhou Province, China
  • About author:Li Xuanze, MS, Attending physician, Department of Emergency and Trauma Surgery, and Key Laboratory for Molecular Diagnosis of Hubei Province, Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, Hubei Province, China
  • Supported by:
    Guizhou Provincial Department of Science and Technology Plan Project, No. ZK[2023]532 (to XZ); Guiyang Municipal Science and Technology Plan Project, No. [2024]2-33 (to XZ); General Medical Science and Technology Fund, No. TYYLKYJJ-2023-036 (to XZ)

摘要:

文题释义:
生物材料:指用于与生物系统接触或相互作用,以诊断、治疗、修复或替换身体组织/器官或增进其功能的天然或人造材料。理想的生物材料需要在生物相容性这一根本前提下,根据具体应用领域平衡和优化其物理力学性能、化学稳定性/降解性、生物功能性/活性,同时满足灭菌要求并具备良好的可加工性。
复合水凝胶:是一种通过将2种或多种不同成分(通常包括聚合物网络与其他功能性材料)结合而制成的高级水凝胶。复合水凝胶的核心目标是克服传统单一组分水凝胶的局限性(如机械强度弱、功能单一、稳定性差等),赋予材料新的、优异的或协同增强的性能。

背景:氧化石墨烯复合水凝胶表现出多种优异性能,如力学性能、生物相容性、可控的降解性等,因此,氧化石墨烯复合水凝胶具有极大的研究和应用价值。
目的:分析海藻酸钠-羟基磷灰石-氧化石墨烯水凝胶的理化性能与细胞相容性。
方法:分别制备海藻酸钠-羟基磷灰石、海藻酸钠-羟基磷灰石-8 g/L氧化石墨烯、海藻酸钠-羟基磷灰石-10 g/L氧化石墨烯、海藻酸钠-羟基磷灰石-12 g/L氧化石墨烯溶液,检测4组溶液的黏度;将4组溶液分别置入CaCl2溶液中交联,得到的水凝胶分别记为SA-HA、SA-HA-8 g/L GO、SA-HA-10 g/L GO、SA-HA-12 g/L GO。表征4组水凝胶的压缩弹性模量、压缩应力、体外降解率、平衡溶胀比与微观形貌。将4组水凝胶分别与大鼠骨髓间充质干细胞共培养,CCK-8检测细胞增殖,Live/Dead荧光染色观察细胞活性,扫描电镜观察细胞黏附。
结果与结论:①加入氧化石墨烯显著提高了水凝胶溶液的黏度,其中SA-HA-10 g/L GO组溶液的黏度值最佳,可满足水凝胶塑形效果。随着氧化石墨烯的加入以及质量浓度的增加,水凝胶的压缩弹性模量与压缩应力升高,体外降解率降低,孔隙率呈先升高后降低的变化,其中SA-HA-10 g/L GO组孔隙率最高;氧化石墨烯的加入降低了水凝胶的平衡溶胀比。扫描电镜显示4组水凝胶内部存在孔隙结构,随着氧化石墨烯的加入以及质量浓度的增加,水凝胶的孔径减小。②扫描电镜显示,SA-HA组材料表面细胞黏附最少,SA-HA-10 g/L GO组材料表面细胞黏附最多。CCK-8检测显示,培养3,5,7 d,SA-HA-8 g/L GO组、SA-HA-10 g/L GO组、SA-HA-12 g/L GO组细胞吸光度值高于SA-HA组(P < 0.05)。Live/Dead荧光染色显示,SA-HA-8 g/L GO组、SA-HA-10 g/L GO组、SA-HA-12 g/L GO组细胞存活率高于SA-HA组(P < 0.05),SA-HA-10 g/L 
GO组细胞存活率高于SA-HA-8 g/L GO组、SA-HA-12 g/L GO组(P < 0.05)。③结果表明,SA-HA-10 g/L GO水凝胶具有更出色的细胞相容性、适宜的降解速率和足够的机械性能。
https://orcid.org/0000-0002-4493-4046 (李轩泽) 

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, 氧化石墨烯, 羟基磷灰石, 藻酸盐, 复合水凝胶, 组织工程支架, 骨组织工程

Abstract: BACKGROUND: Graphene oxide composite hydrogels exhibit various excellent properties, such as mechanical properties, biocompatibility, and controllable degradation, making them of great research and application value.
OBJECTIVE:To analyze the physicochemical properties and cytocompatibility of sodium alginate-hydroxyapatite-graphene oxide hydrogels. 
METHODS: Sodium alginate-hydroxyapatite, sodium alginate-hydroxyapatite-8 g/L graphene oxide, sodium alginate-hydroxyapatite-10 g/L graphene oxide, and sodium alginate-hydroxyapatite-12 g/L graphene oxide solutions were prepared. The viscosity of the four groups of solutions was measured. The four groups of solutions were cross-linked in CaCl2 solution to obtain hydrogels, which were denoted as SA-HA, SA-HA-8 g/L GO, SA-HA-10 g/L GO, and SA-HA-12 g/L GO, respectively. The compressive elastic modulus, compressive stress, in vitro degradation rate, equilibrium swelling ratio, and microstructure of the four groups of hydrogels were characterized. The four groups of hydrogels were co-cultured with rat bone marrow mesenchymal stem cells. Cell proliferation was detected by CCK-8 assay. Cell viability was observed by Live/Dead fluorescence staining. Cell adhesion was observed by scanning electron microscopy.
RESULTS AND CONCLUSION: (1) The addition of graphene oxide significantly increased the viscosity of the hydrogel solution, with the SA-HA-10 g/L GO group showing the best viscosity, which met the requirements for hydrogel shaping. With the addition of graphene oxide and the increase in its concentration, the compressive elastic modulus and compressive stress of the hydrogels increased, the in vitro degradation rate decreased, and the porosity initially increased and then decreased, with the SA-HA-10 g/L GO group having the highest porosity. The addition of graphene oxide reduced the equilibrium swelling ratio of the hydrogels. Scanning electron microscopy showed that all four groups of hydrogels had porous structures, and the pore size decreased with the addition of graphene oxide and the increase in its concentration. (2) Scanning electron microscopy showed that the SA-HA group material had the least cell adhesion on its surface, while the SA-HA-10 g/L GO group material had the most cell adhesion. CCK-8 assay showed that after 3, 5, and 7 days of culture, the cell absorbance values of the SA-HA-8 g/L GO group, SA-HA-10 g/L GO group, and SA-HA-12 g/L GO group were higher than that of the SA-HA group (P < 0.05). Live/Dead fluorescence staining showed that the cell viability of the SA-HA-8 g/L GO group, SA-HA-10 g/L GO group, and SA-HA-12 g/L GO group was higher than that of the SA-HA group (P < 0.05), and the cell viability of the SA-HA-10 g/L GO group was higher than that of the SA-HA-8 g/L GO group and SA-HA-12 g/L GO group (P < 0.05). (3) The results exhibit that the SA-HA-10 g/L GO hydrogel has superior cytocompatibility, a suitable degradation rate, and sufficient mechanical properties.

Key words: biomaterials, graphene oxide, hydroxyapatite, alginate, composite hydrogel, tissue engineering scaffold, bone tissue engineering

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