中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (22): 3555-3560.doi: 10.3969/j.issn.2095-4344.2017.22.019

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

流体剪切力作用下阿司匹林对不同钛表面MG-63细胞增殖活性的影响

梁仲朗1,刘长虹2,李世轶1,杨晓喻1
  

  1. 1南方医科大学口腔医院•广东省口腔医院种植中心,广东省广州市  510260;2广东协大口腔医院,广东省广州市  510399
  • 收稿日期:2017-06-19 出版日期:2017-08-08 发布日期:2017-09-01
  • 通讯作者: 杨晓喻,博士,主任医师,研究生导师,南方医科大学口腔医院?广东省口腔医院种植中心,广东省广州市 510260
  • 作者简介:梁仲朗,男,1990年生,广东省广州市人,2017年南方医科大学毕业,硕士,主要从事流体剪切力与种植体细胞界面的生物力学研究。
  • 基金资助:

    国家自然科学基金(30500569)

Aspirin effects on MG-63 cell proliferation on different modified titanium surfaces under fluid shear stress

Liang Zhong-lang1, Liu Chang-hong2, Li Shi-yi1, Yang Xiao-yu1 
  

  1. 1Stomatological Hospital, Southern Medical University, Guangzhou 510260, Guangdong Province, China; 2Guangdong Xieda Stomatological Hospital, Guangzhou 510399, Guangdong Province, China
  • Received:2017-06-19 Online:2017-08-08 Published:2017-09-01
  • Contact: Yang Xiao-yu, M.D., Chief physician, Master’s supervisor, Stomatological Hospital, Southern Medical University, Guangzhou 510260, Guangdong Province, China
  • About author:Liang Zhong-lang, Master, Stomatological Hospital, Southern Medical University, Guangzhou 510260, Guangdong Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 30500569

摘要:

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文题释义:
阿司匹林等非类固醇类抗炎药对成骨细胞、成骨功能的影响:部分文献显示为抑制作用,另外部分为促进作用,相关机制尚不明确。国内外学者报道非类固醇类抗炎药通过减少成骨细胞的增殖能力对骨组织产生不良作用,但小剂量的阿司匹林无不良作用。当阿司匹林浓度大于20 μmol/L时,可通过介导凋亡抑制成骨样细胞生长。甚至有文献报道过高剂量阿司匹林,不仅导致成骨细胞死亡,还能导致因坏死引起的炎症作用。动物实验发现,常规临床剂量阿司匹林对兔骨内植入多孔涂层种植体4周和8周时有显著抑制成骨作用。
高浓度阿司匹林对成骨细胞的抑制作用:可能通过以下3个途径实现,成骨发生关键转录因子的活性,通过骨形态发生蛋白途径减少COX-2表达,介导细胞凋亡抑制,总的效应表现为抑制成骨细胞增殖。
 
背景:最近有国内外临床试验、动物实验和体外细胞学实验证明,适宜浓度阿司匹林能上调成骨细胞的增殖及成骨功能。
目的:探讨流体剪切力作用下不同浓度阿司匹林对成骨细胞增殖的影响。
方法:①采用含体积分数10%胎牛血清与不同浓度阿司匹林(0,0.023,0.046,0.062 5,0.125,0.25,0.5,1.0,2.0,4.0 mmol/L)的DMEM低糖培养液培养MG-63人成骨样细胞,1-7 d后,MTS法检测细胞增殖;②将MG-63人成骨样细胞分别接种于高度抛光钛板、喷砂酸碱处理钛板及光滑载玻片上,培养1 d后,再分别以含不同浓度阿司匹林(0,0.5 mmol/L)的培养液培养3 d,施加流体剪切力,加力0,0.5,1,2,4 h后,MTS法检测细胞增殖。
结果与结论:①不同浓度阿司匹林对细胞增殖的作用:培养1-3 d时,0.023,0.046,0.062 5,0.5 mmol/L的阿司匹林可促进MG-63人成骨样细胞的增殖;培养1-7 d,1,2,4 mmol/L的阿司匹林抑制MG-63人成骨样细胞的增殖;②流体剪切力作用下阿司匹林对细胞增殖的作用:单因素方差分析结果显示,阿司匹林药物处理因素对细胞增殖影响的差异有统计学意义(F=8.349,P=0.004),0.5 mmol/L阿司匹林可降低MG-63人成骨样细胞的增殖活性;材料表面处理对细胞增殖影响的差异无统计学意义(F=2.826,P=0.064);不同流体剪切力加载时间对细胞增殖影响的差异无统计学意义(F=0.893,P=0.406);③流体剪切力下0.5 mmol/L阿司匹林对细胞增殖的作用:材料表面处理对细胞增殖影响的差异无统计学意义(F=1.803,P=0.171);    0.5 mmol/L阿司匹林可显著抑制玻片组MG-63人成骨样细胞的增殖(P=0.003),对高度抛光钛板及喷砂酸碱处理钛板组MG-63人成骨样细胞增殖无显著抑制作用(P=0.891,P=0.051);④结果表明:不同浓度阿司匹林对MG-63人成骨样细胞增殖有明确的影响作用,且有浓度依赖性;不同钛表面处理可降低阿司匹林对MG-63人成骨样细胞增殖的影响作用。

关键词: 生物材料, 材料相容性, 阿司匹林, 流体剪切力, 钛表面, 表面形貌, 成骨细胞, 非类固醇类抗炎药, 增殖活性, 骨结合, 旧药新用, 国家自然科学基金

Abstract:

BACKGROUND: Recent research has shown that the proper concentration of aspirin can increase the proliferation and osteogenic ability of MG-63 cells.
OBJECTIVE: To explore the effects of different concentrations of aspirin on osteoblast proliferation on the implant-cell interface under fluid shear stress.
METHODS: (1) MG-63 cells were cultured in low-glucose DMEM containing 10% fetal bovine serum and different concentrations of aspirin (0, 0.023, 0.046, 0.0625, 0.125, 0.25, 0.5, 1.0, 2.0, 4.0 mmol/L) for 1-7 days. Then cell proliferation was detected using MTS method. (2) MG-63 cells were cultured on three different surfaces: glass slide, PT titanium surface and SLA titanium surface. After 3 days of culture with aspirin at a concentration of 0 or 0.5 mmol/L, the cells were subjected to fluid shear stress. MTS test was applied to estimate the proliferation of MG-63 cells at 0, 0.5, 1, 2, 4 hours after stress application.
RESULTS AND CONCLUSION: (1) After 1-3 days of culture, 0.023, 0.046, 0.5 mmol/L aspirin promoted the proliferation of MG-63 cells, while after 1-7 days of culture, 1, 2, 4 mmol/L aspirin inhibited the proliferation of MG-63 cells. (2) Under the fluid shear stress, aspirin showed significant effects on the cell proliferation as confirmed by one-way analysis of variance (F=8.349, P=0.004), and 0.5 mmol/L aspirin inhibited the cellular proliferation of MG-63 cells. However, surface modification and stress loading time showed no significant effects on the cell proliferation (F=2.826, P=0.064; F=0.893, P=0.406). (3) Under the fluid shear stress, surface modification showed no significant effect on the cell proliferation of MG-63 cells cultured with 0.5 mmol/L aspirin (F=1.803, P=0.171). Under the fluid shear stress, 0.5 mmol/L aspirin significantly inhibited the proliferation of MG-63 cells on the glass slide (P=0.003), while PT and SLA titanium surfaces showed on inhibitory effect on the cell proliferation (P=0.891, P=0.051). The present results demonstrate that the cell proliferation of MG-63 is related with aspirin in a concentration-dependent manner. In addition, different titanium surfaces may decrease the sensitivity of MG-63 cell proliferation to aspirin.

Key words: Aspirin, Biomechanics, Titanium, Osteoblasts, Cell Proliferation, Tissue Engineering

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