中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (21): 3351-3356.doi: 10.12307/2022.643

• 药物控释材料 drug delivery materials • 上一篇    下一篇

壳聚糖改性聚醚醚酮表征及对MC3T3-E1细胞黏附、增殖的影响

冯  乐,邱  鹏,刘  敏,周  会   

  1. 西南医科大学口颌面修复重建与再生实验室,西南医科大学附属口腔医院修复科,四川省泸州市  646000
  • 收稿日期:2021-08-24 接受日期:2021-11-04 出版日期:2022-07-28 发布日期:2022-01-27
  • 通讯作者: 周会,硕士,医师,西南医科大学口颌面修复重建与再生实验室,西南医科大学附属口腔医院修复科,四川省泸州市 646000
  • 作者简介:冯乐,男,1995年生,四川省西昌市人,汉族,西南医科大学在读硕士,主要从事口腔种植方向研究。
  • 基金资助:
    四川省医学科研课题计划项目(S19023),项目负责人:刘敏;泸州市科技计划项目(2018-JYJ-39),项目负责人:周会

Characterization of chitosan-modified polyetheretherketone and its effect on MC3T3-E1 cell adhesion and proliferation

Feng Le, Qiu Peng, Liu Min, Zhou Hui   

  1. Oral and Maxillofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Department of Prosthodontics, Affiliated Stomatological Hospital, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2021-08-24 Accepted:2021-11-04 Online:2022-07-28 Published:2022-01-27
  • Contact: Zhou Hui, Master, Physician, Oral and Maxillofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Department of Prosthodontics, Affiliated Stomatological Hospital, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Feng Le, Master candidate, Oral and Maxillofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Department of Prosthodontics, Affiliated Stomatological Hospital, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:
    the Medical Research Project of Sichuan Province, No. S19023 (to LM); Science and Technology Plan Project of Luzhou City, No. 2018-JYJ-39 (to ZH)

摘要:

文题释义:
聚醚醚酮:是一种线性的全芳族半结晶热塑性聚合物,与天然牙的颜色相似,弹性模量与人的颌骨皮质骨相近。此外,聚醚醚酮还具有多种特性,如韧性和刚性兼备、耐高温耐腐蚀、耐蠕变、加工性能好等。聚醚醚酮及其复合物已被广泛应用于航空航天、军事及医疗领域。
壳聚糖:是天然多糖甲壳素脱除部分乙酰基的产物,被广泛应用于食品、化工、化妆品、水处理、金属提取及回收等领域。同时,壳聚糖还具有良好的生物相容性、可降解性、抗菌性等特性,常作为药物或生长因子载体、生物材料涂层等应用于医疗领域。

背景:聚醚醚酮的生物惰性表面限制了其医学应用,如何提高聚醚醚酮的生物活性亟待解决。
目的:分析壳聚糖生物活性涂层改性聚醚醚酮的表面特征及其对MC3T3-E1细胞增殖、黏附的影响。
方法:取圆片状聚醚醚酮材料,依次进行NaBH4、3-氨丙基三乙氧基硅烷、戊二醛水溶液及壳聚糖溶液处理,获得壳聚糖生物活性涂层改性的聚醚醚酮材料。使用X射线光电子能谱、扫描电镜、原子力显微镜与全自动接触角测量仪观察化学处理前后聚醚醚酮材料的表面特征。将MC3T3-E1细胞分别接种于聚醚醚酮与壳聚糖改性聚醚醚酮材料表面,观察细胞的增殖与黏附情况。
结果与结论:①X射线光电子能谱检测显示,聚醚醚酮材料仅含有C、O元素,壳聚糖改性聚醚醚酮材料含有C、O、N、Si元素;壳聚糖改性聚醚醚酮材料表面的接触角小于聚醚醚酮材料(P < 0.05);②扫描电镜下可见,聚醚醚酮材料表面有明显的凹槽状起伏,壳聚糖改性聚醚醚酮材料表面存在壳聚糖分子,大小为1.0-2.0 μm;原子力显微镜下可见,聚醚醚酮材料表面有较多的微小凹坑,大小约为0.1 μm,壳聚糖改性聚醚醚酮材料表面的凹坑增大,大小为0.2-0.5 μm,表面粗糙度大于聚醚醚酮材料;③倒置显微镜下可见,壳聚糖改性聚醚醚酮材料表面的细胞数量多于聚醚醚酮材料(P < 0.05);激光共聚焦显微镜下可见,黏附在聚醚醚酮材料表面的细胞伸展性较差、伪足较少、肌动蛋白微丝不明显,黏附在壳聚糖改性聚醚醚酮材料表面的细胞伸展性较好、伪足较多、肌动蛋白微丝多且明显;④CCK-8实验显示,壳聚糖改性聚醚醚酮材料表面的细胞增殖快于聚醚醚酮材料(P < 0.05);⑤结果表明,壳聚糖表面改性增加了聚醚醚酮材料表面的粗糙度和湿润性,促进材料表面MC3T3-E1细胞的增殖、黏附。

https://orcid.org/0000-0002-2085-9563 (冯乐) 

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: 聚醚醚酮, 壳聚糖, 生物材料, 表面改性, 生物安全性, 成骨细胞, 种植体, 细胞增殖, 细胞黏附

Abstract: BACKGROUND: The biological inert surface of polyetheretherketone limits its medical application, so how to improve the biological activity of polyetheretherketone needs to be solved urgently. 
OBJECTIVE: To analyze the surface characteristics of polyetheretherketone modified by chitosan bioactive coating and its effect on the adhesion and proliferation of MC3T3-E1 cells. 
METHODS: Disc-shaped polyetheretherketone material was obtained and treated with NaBH4, 3-aminopropyltriethoxysilane, glutaraldehyde aqueous solution, and chitosan solution to form polyetheretherketone modified with chitosan bioactive coating. X-ray photoelectron spectroscopy, scanning electron microscope, atomic force microscope, and automatic contact angle measurement instrument were used to observe the surface characteristics of chemically treated polyetheretherketone. MC3T3-E1 cells were seeded on the surface of polyetheretherketone and chitosan-modified polyetheretherketone separately, and the proliferation and adhesion of the cells were observed. 
RESULTS AND CONCLUSION: (1) X-ray photoelectron spectroscopy showed that the polyetheretherketone material only contained C and O elements. The chitosan modified polyetheretherketone material contained C, O, N, and Si elements. The contact angle on the surface of chitosan modified polyetheretherketone material was smaller than that of the polyetheretherketone material (P < 0.05). (2) Under the scanning electron microscope, the surface of the polyetheretherketone material had obvious groove-like undulations, and the surface of the chitosan-modified polyetheretherketone material had chitosan molecule. The size was 1.0-2.0 μm. Atomic force microscope exhibited that there were many tiny pits on the surface of the polyetheretherketone material, and the size was about 0.1 μm. The pits on the surface of the chitosan-modified polyetheretherketone material increased; the size was 0.2-0.5 μm, and the surface roughness was greater than that of the polyetheretherketone material. (3) Under an inverted microscope, the number of cells on the surface of the chitosan-modified polyetheretherketone material was more than that of the polyetheretherketone material (P < 0.05 ). Under a laser confocal microscope, the cells adhered to the surface of the polyetheretherketone material had poor stretchability, fewer pseudopods, and inconspicuous actin microfilaments. The extensibility of cells adhered to the surface of the chitosan-modified polyetheretherketone material was better; the pseudopodia were more; the actin microfilament was more and obvious. (4) CCK-8 experiment showed that the cell proliferation on the surface of the chitosan-modified polyetheretherketone material was faster than that of the polyetheretherketone material (P < 0.05). (5) These results confirm that chitosan surface modification increases surface roughness and wettability of polyetheretherketone, promotes adhesion and proliferation of MC3T3-E1 cells on the surface of the material. 

Key words: polyetheretherketone, chitosan, biomaterials, surface modification, biosafety, osteoblast, implant, cell proliferation, cell adhesion

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