中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (26): 6736-6743.doi: 10.12307/2026.409

• 功能性生物材料Functional biomaterials • 上一篇    下一篇

3D打印新补骨脂异黄酮涂层支架调节成骨/破骨细胞活性促进骨再生

皮志龙1,李嘉源1,谭志超2,陆小梅3,张志强3,叶翔凌2   

  1. 1广州中医药大学研究生院,广东省广州市   510006;2广州中医药大学东莞医院,广东省东莞市   523000;3东莞市第八人民医院,广东省东莞市   523320
  • 接受日期:2025-11-14 出版日期:2026-09-18 发布日期:2026-03-10
  • 通讯作者: 叶翔凌,博士,主治医师,广州中医药大学东莞医院骨科,广东省东莞市 523000
  • 作者简介:皮志龙,男,广西壮族自治区百色市人,汉族,广州中医药大学在读硕士,主要从事骨质疏松和骨组织工程研究。
  • 基金资助:
    广东省基础与应用基础研究基金项目(2023A1515110833),项目负责人:叶翔凌;中国博士后科学基金(2023M740862,2024T170198),项目负责人:叶翔凌;广东省基础与应用基础研究项目-区域联合基金-地区培育项目(2021B1515140002),项目负责人:陆小梅;东莞市社会发展科技项目(重点项目)(20231800935402),项目负责人:谭志超

3D printed neobavaisoflavone-coated scaffolds promote bone regeneration by regulating osteoblast/osteoclast activities

Pi Zhilong1, Li Jiayuan1, Tan Zhichao2, Lu Xiaomei3, Zhang Zhiqiang3, Ye Xiangling2   

  1. 1Graduate School of Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China; 2Dongguan Hospital, Guangzhou University of Chinese Medicine, Dongguan 523000, Guangdong Province, China; 3Dongguan Eighth People's Hospital, Dongguan 523320, Guangdong Province, China
  • Accepted:2025-11-14 Online:2026-09-18 Published:2026-03-10
  • Contact: Ye Xiangling, MD, Attending physician, Dongguan Hospital, Guangzhou University of Chinese Medicine, Dongguan 523000, Guangdong Province, China
  • About author:Pi Zhilong, MS candidate, Graduate School of Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • Supported by:
    Guangdong Basic and Applied Basic Research Foundation, No. 2023A1515110833 (to YXL); China Postdoctoral Science Foundation, No. 2023M740862 and No. 2024T170198 (to YXL); Guangdong Province Basic and Applied Funds Basic Research Project-Regional Joint Fund-Regional Cultivation Project, No. 2021B1515140002 (to LXM); Dongguan Social Development Science and Technology Project (Key Project), No. 20231800935402 (to TZC)

摘要:

文题释义:
新补骨脂异黄酮:是一种从中药“新补骨脂”中提取的活性成分,它具有促进骨形成、抗氧化、调节激素水平、抗肿瘤和调节免疫等多种生物学功能。
破骨细胞:是骨髓中的一类巨核细胞(多核细胞)的后代,主要功能是通过分泌酶类物质来分解骨组织中的无机盐和有机基质,从而参与到骨的吸收和再建过程中。
成骨细胞:是一类参与到骨组织形成和维持的细胞,主要负责合成和沉积骨基质,促进骨骼的生长、修复和维护。

背景:新补骨脂异黄酮可以促进骨形成,可能是应用于骨再生的潜在小分子药物。利用3D打印骨组织工程支架作为新补骨脂异黄酮的药物输送载体,有望提升骨再生的潜在应用。
目的:探索聚乳酸/聚多巴胺/新补骨脂异黄酮人工骨支架对破骨细胞和成骨细胞活性的影响。
方法:①采用熔融沉积建模技术制作3D打印聚乳酸支架,将聚乳酸支架浸入含或不含新补骨脂异黄酮的多巴胺溶液中,分别得到聚乳酸/聚多巴胺/新补骨脂异黄酮支架、聚乳酸/聚多巴胺支架。表征3组支架的表面形貌、表面硬度与抗压强度,表征聚乳酸/聚多巴胺/新补骨脂异黄酮支架的药物缓释性能。②将小鼠胚胎成骨细胞MC3T3-E1分别与3组支架共培养,通过CCK-8实验及细胞死活染色评估支架的细胞相容性,Transwell实验评估支架对成骨细胞迁移的影响,碱性磷酸酶定量实验与茜素红染色评估支架对成骨细胞分化的影响。将RAW264.7细胞分别与3组支架共培养,破骨诱导分化后,通过抗酒石酸酸性磷酸酶染色评估支架对破骨细胞分化的影响。
结果与结论:①扫描电镜下可见3组支架均具有三维结构与规则的互连多孔结构,平均孔径400 µm。聚乳酸/聚多巴胺支架、聚乳酸/聚多巴胺/新补骨脂异黄酮支架的表面硬度与压缩强度均高于聚乳酸支架(P < 0.05)。聚乳酸/聚多巴胺/新补骨脂异黄酮支架具有良好的药物释放行为,体外可持续释放药物达14 d以上。②CCK-8实验及细胞死活染色显示,3组支架均具有良好的细胞相容性,并且聚乳酸/聚多巴胺支架、聚乳酸/聚多巴胺/新补骨脂异黄酮支架可促进MC3T3-E1细胞增殖。Transwell实验显示,相较于聚乳酸支架,聚乳酸/聚多巴胺支架、聚乳酸/聚多巴胺/新补骨脂异黄酮支架可促进MC3T3-E1细胞迁移。碱性磷酸酶定量实验与茜素红染色显示,相较于其他两组支架,聚乳酸/聚多巴胺支架、聚乳酸/聚多巴胺/新补骨脂异黄酮支架可促进MC3T3-E1细胞的成骨分化。抗酒石酸酸性磷酸酶染色显示,聚乳酸/聚多巴胺/新补骨脂异黄酮支架可抑制RAW264.7细胞的破骨分化。③结果表明,聚乳酸/聚多巴胺/新补骨脂异黄酮支架具有良好的生物安全性,可通过调节破骨和成骨细胞活性促进骨再生。
https://orcid.org/0009-0002-0189-5419 (皮志龙)

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: 3D打印支架, 聚乳酸, 聚多巴胺, 新补骨脂异黄酮, 成骨分化, 破骨吸收, 生物材料

Abstract: BACKGROUND: Neobavaisoflavone could promote bone formation and may be a potential small molecule drug for bone regeneration. The use of 3D printed bone tissue engineering scaffolds as drug delivery carriers for neobavaisoflavone is expected to enhance the potential application of bone regeneration.
OBJECTIVE: To explore the effects of polylactic acid/polydopamine/neobavaisoflavone bone scaffold on osteoclast and osteoblast activity. 
METHODS: (1) Fused deposition modeling technology was used to manufacture a 3D printed polylactic acid scaffold. These polylactic acid scaffolds were immersed in a dopamine solution containing or without neobavaisoflavone to produce polylactic acid/polydopamine/neobavaisoflavone scaffolds and polylactic acid/polydopamine scaffolds, respectively. The surface morphology, surface hardness, and compressive strength of the three groups of scaffolds were characterized, and the drug release properties of the polylactic acid/polydopamine/neobavaisoflavone scaffolds were investigated. (2) Mouse embryonic osteoblasts MC3T3-E1 were co-cultured with the three groups of scaffolds. The cytocompatibility of the scaffolds was assessed using CCK-8 assay and live-dead cell staining. The effects of the scaffolds on osteoblast migration were evaluated using Transwell assays. The effects of the scaffolds on osteoblast differentiation were assessed using alkaline phosphatase quantification and Alizarin red staining. RAW264.7 cells were co-cultured with the three groups of scaffolds. After osteoclast induction, the effects of the scaffolds on osteoclast differentiation were assessed by tartrate-resistant acid phosphatase staining. 
RESULTS AND CONCLUSION: (1) Scanning electron microscopy revealed that all three groups of scaffolds exhibited a three-dimensional structure with regularly interconnected porous structures, with an average pore size of 400 µm. The surface hardness and compressive strength of the polylactic acid/polydopamine scaffold and the polylactic acid/polydopamine/neobavaisoflavone scaffold were significantly higher than those of the polylactic acid scaffold (P < 0.05). The polylactic acid/polydopamine/neobavaisoflavone scaffold exhibited excellent drug release, with sustained drug release for over 14 days in vitro. (2) CCK-8 assay and live-dead cell staining demonstrated that all three groups of scaffolds exhibited good cytocompatibility. The polylactic acid/polydopamine scaffold and the polylactic acid/polydopamine/neobavaisoflavone scaffold promoted the proliferation of MC3T3-E1 cells. Transwell assay showed that compared with the polylactic acid scaffold, the polylactic acid/polydopamine scaffold and the polylactic acid/polydopamine/neobavaisoflavone scaffold promoted MC3T3-E1 cell migration. Alkaline phosphatase quantification assay and Alizarin red staining revealed that the polylactic acid/polydopamine scaffold and the polylactic acid/polydopamine/neobavaisoflavone scaffold promoted osteogenic differentiation of MC3T3-E1 cells compared with the other two scaffolds. Tartrate-resistant acid phosphate staining revealed that the polylactic acid/polydopamine/neobavaisoflavone scaffold inhibited osteoclast differentiation of RAW264.7 cells. (3) These results demonstrate that the polylactic acid/polydopamine/neobavaisoflavone scaffold has good biosafety and can promote bone regeneration by regulating osteoclast and osteoblast activity. 

Key words: 3D printed scaffold, polylactic acid, polydopamine, neobavaisoflavone, osteogenic differentiation, osteoclastic resorption, biomaterial

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