中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (15): 2351-2357.doi: 10.12307/2024.270

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

静电纺丝聚偏氟乙烯压电仿生骨膜的细胞相容性

魏岁艳1,曹怡静1,赵  帅1,李冬瑶1,魏  琴2,许  燕3,徐国强1,4   

  1. 1新疆医科大学第一附属医院(附属口腔医院)口腔修复种植科,新疆维吾尔自治区乌鲁木齐市  830054;2新疆医科大学中心实验室,新疆维吾尔自治区乌鲁木齐市  830054;3新疆大学机械工程学院,新疆维吾尔自治区乌鲁木齐市  830047;4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
  • 收稿日期:2023-03-09 接受日期:2023-05-08 出版日期:2024-05-28 发布日期:2023-09-19
  • 通讯作者: 徐国强,主任医师,硕士生导师,新疆医科大学第一附属医院(附属口腔医院)口腔修复种植科,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:魏岁艳,女,1994年生,甘肃省庆阳市人,汉族,在读硕士,主要从事口腔材料学的研究。
  • 基金资助:
    国家自然科学基金项目(51965057),项目负责人:许燕

Cytocompatibility of electrospun polyvinylidene fluoride piezoelectric bionic periosteum

Wei Suiyan1, Cao Yijing1, Zhao Shuai1, Li Dongyao1, Wei Qin2, Xu Yan3, Xu Guoqiang1, 4   

  1. 1Department of Prosthodontics and Implantology, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; 2Central Laboratory of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; 3College of Mechanical Engineering, Xinjiang University, Urumqi 830047, Xinjiang Uygur Autonomous Region, China; 4Insitute of Stomatology, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Received:2023-03-09 Accepted:2023-05-08 Online:2024-05-28 Published:2023-09-19
  • Contact: Xu Guoqiang, Chief physician, Master’s supervisor, Department of Prosthodontics and Implantology, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; Insitute of Stomatology, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • About author:Wei Suiyan, Master candidate, Department of Prosthodontics and Implantology, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    National Natural Science Foundation of China, No. 51965057 (to XY)

摘要:


文题释义:

静电纺丝:是利用高压静电场对高分子溶液的击穿作用来制备纳微米纤维材料的方法,其基本原理是在喷射装置和接收装置间施加上万伏的静电场,从纺丝液的锥体端部形成射流,并在电场中被拉伸,最终在接收装置上形成无纺状态的纳米纤维。 
聚偏氟乙烯:为白色粉末状结晶性聚合物,是一种新型的高分子材料。通过静电纺丝技术制备的聚偏氟乙烯纳米纤维膜,在过滤材料、电池隔膜、生物医学等领域应用广泛,具有良好的发展前景。


背景:聚偏氟乙烯具有压电性能、良好的生物相容性和无毒性,使其成为骨膜修复合适的候选材料。

目的:评价掺锌镁离子静电纺丝聚偏氟乙烯压电仿生骨膜的体外细胞毒性。
方法:采用静电纺丝技术分别制备纯聚偏氟乙烯、掺锌离子聚偏氟乙烯、掺镁离子聚偏氟乙烯、掺锌镁离子聚偏氟乙烯压电仿生骨膜,依次命名为PVDF、PVDF-Zn、PVDF-Mg和PVDF-Zn-Mg,其中锌、镁离子的质量分数均为1%。将成骨细胞、血管内皮细胞分别与4组仿生骨膜共培养,通过碱性磷酸酶染色、CD31免疫荧光染色、扫描电镜观察与CCK-8法检测仿生骨膜的细胞相容性。

结果与结论:①成骨细胞:培养7 d的碱性磷酸酶染色显示,PVDF-Zn组碱性磷酸酶分泌多于其他3组。扫描电镜下可见,培养1 d时,细胞在PVDF-Mg和PVDF-Zn-Mg仿生骨膜表面得到了一定的铺展,伪足向四周伸展;到3 d时,各组细胞边缘向材料伸出伪足;到第5,7天时,细胞铺展充分、生长形态良好且牢牢地覆盖在纤维表面,细胞伪足向四周及纤维空隙中伸展。CCK-8检测显示,随着时间的推移,各组仿生骨膜上的细胞增殖呈上升趋势,培养1,3,5,7 d的细胞相对增殖率均≥75%,细胞毒性≤1级。②血管内皮细胞:培养3 d的CD31免疫荧光染色显示,细胞在各组仿生骨膜上良好地黏附和铺展,彼此连接,其中PVDF-Zn-Mg组细胞数量多于其他3组。扫描电镜下可见,培养1,3 d时,细胞开始黏附在各组纤维表面;到5 d时,细胞在纤维表面均铺展良好并伸出明显的伪足;到7 d时,PVDF-Mg、PVDF-Zn-Mg仿生骨膜上的细胞呈复层生长,并伸展伪足至纤维空隙内。CCK-8检测显示,随着时间推移,各组仿生骨膜上的细胞增殖呈下降趋势,培养1,3,5,7 d的细胞相对增殖率均≥125%,细胞毒性为0级。③结果表明:掺锌镁离子静电纺丝聚偏氟乙烯压电仿生骨膜具有良好的细胞相容性。

https://orcid.org/0009-0008-4428-3264(魏岁艳)

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: 静电纺丝, 聚偏氟乙烯, 骨缺损, 仿生骨膜, 细胞相容性, 骨组织工程

Abstract: BACKGROUND: Polyvinylidene fluoride (PVDF) with piezoelectric properties, good biocompatibility and nontoxicity make it a suitable candidate for periosteal repair. 
OBJECTIVE: To evaluate the cytotoxicity of PVDF bionic periosteum by electrospinning with zinc and magnesium ions in vitro.
METHODS: Pure PVDF, zinc-doped PVDF, magnesium-doped PVDF and Zinc-magnesium ion PVDF piezoelectric bionic periosteum were prepared by electrospinning technology, respectively. They were named PVDF, PVDF-Zn, PVDF-Mg and PVDF-Zn-Mg, in which the mass fraction of zinc and magnesium ions were all 1%. Osteoblasts and vascular endothelial cells were co-cultured with four groups of bionic periosteum. Cell compatibility of bionic periosteum was determined by alkaline phosphatase staining, CD31 immunofluorescence staining, and scanning electron microscopy.
RESULTS AND CONCLUSION: (1) Osteoblasts: Alkaline phosphatase staining after 7 days of culture showed that the PVDF-Zn group secreted more alkaline phosphatase than the other three groups. Under a scanning electron microscopy, after 1 day of culture, the cells had a certain spread on the surface of PVDF-Mg and PVDF-Zn-Mg bionic periosteum, and the pseudopod extended to all sides. On day 3, the cell edge of each group extended pseudopods to the material. By days 5 and 7, the cells were fully spread, well grown and firmly covered the surface of the fibers, and the cellular pseudopods extended around and into the interstitial space of the fibers. CCK-8 assay showed that the cell proliferation on the bionic periosteum of each group showed an increasing trend over time and the relative proliferation rate of cells at 1, 3, 5, and 7 days was ≥75%, and the cytotoxicity was ≤ grade 1. (2) Vascular endothelial cells: CD31 immunofluorescence staining for 3 days showed that the cells adhered and spread well on the bionic periosteum of each group and connected with each other, and the number of cells in the PVDF-Zn-Mg group was more than that in the other three groups. Under scanning electron microscope, the cells began to adhere to the surface of each group of fibers after 1 and 3 days of culture. On day 5, the cells were well spread on the surface of the fibers and extended obvious pseudopods. On day 7, the cells on the PVDF-Mg and PVDF-Zn-Mg bionic periosteum grew in multiple layers and extended the pseudopod into the fibrous void. CCK-8 assay showed that the cell proliferation on the bionic periosteum of each group showed a downward trend over time, and the relative proliferation rate of cells at 1, 3, 5 and 7 days was ≥125%, and the cytotoxicity was grade 0. (3) The results showed that Zn-Mg electrospun PVDF piezoelectric bionic periosteum had good cytocompatibility.

Key words: electrospinning, polyvinylidene fluoride, bone defect, biomimetic periosteum, cell compatibility, bone tissue engineering

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