中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (43): 6945-6950.doi: 10.3969/j.issn.2095-4344.2014.43.010

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

乌司他丁对骨水泥颗粒诱导MC3T3-E1鼠前成骨细胞凋亡的干预作用

茹江英,丛  宇,赵建宁,郭  亭,俞  磊,丁  浩,江  辉   

  1. 解放军第二军医大学附属南京临床医学院(解放军南京军区南京总医院),江苏省南京市  210002
  • 收稿日期:2014-09-19 出版日期:2014-10-15 发布日期:2014-10-15
  • 通讯作者: 赵建宁,教授,博士生导师,解放军第二军医大学附属南京临床医学院(解放军南京军区南京总医院),江苏省南京市 210002
  • 作者简介:茹江英,男,1976年生,山西省晋城市人,汉族,2006年南通大学毕业,硕士,现工作于武警江苏省总队医院骨科,副主任医师,主要从事关节外科、创伤骨科方面的研究。
  • 基金资助:

    江苏省基础研究计划(自然科学基金)-面上研究项目(BK2012776)

Ulinastatin intervention for polymethyl methacrylate-induced MC3T3-E1 mouse preosteoblast apoptosis

Ru Jiang-ying, Cong Yu, Zhao Jian-ning, Guo Ting, Yu Lei, Ding Hao, Jiang Hui   

  1. Nanjing Clinical Medical School Affiliated to the Second Military Medical University (Nanjing General Hospital of Nanjing Military Area Command of Chinese PLA), Nanjing 210002, Jiangsu Province, China
  • Received:2014-09-19 Online:2014-10-15 Published:2014-10-15
  • Contact: Zhao Jian-ning, Professor, Doctoral supervisor, Nanjing Clinical Medical School Affiliated to the Second Military Medical University (Nanjing General Hospital of Nanjing Military Area Command of Chinese PLA), Nanjing 210002, Jiangsu Province, China
  • About author:Ru Jiang-ying, Master, Associate chief physician, Nanjing Clinical Medical School Affiliated to the Second Military Medical University (Nanjing General Hospital of Nanjing Military Area Command of Chinese PLA), Nanjing 210002, Jiangsu Province, China
  • Supported by:

    the Natural Science Foundation of Jiangsu Province, No. BK2012776

摘要:

背景:前期研究发现,乌司他丁对RANKL诱导RAW264.7细胞活化为成熟破骨细胞具有一定的抑制作用,并可降低基质金属蛋白酶9的表达,但其对聚甲基丙烯酸甲酯骨水泥促成骨细胞凋亡效应是否有干预作用尚不清楚。
目的:探讨乌司他丁对骨水泥颗粒诱导MC3T3-E1鼠前成骨细胞凋亡及Ⅰ型胶原、骨钙素、基质金属蛋白酶2 mRNA表达的影响。
方法:取第六七代生长状态良好的MC3T3-E1鼠前成骨细胞,分4组培养,骨水泥组加入1 g/L的聚甲基丙烯酸甲酯骨水泥悬液;高、低剂量乌司他丁组在加入1 g/L的聚甲基丙烯酸甲酯骨水泥悬液后,再分别加入    5 000,500 U/mL的乌司他丁;设置单独培养的细胞为空白对照。MTT法检测细胞增殖活性,茜素红染色检测细胞矿化程度,流式细胞仪检测细胞凋亡率,半定量RT-PCR检测细胞中Ⅰ型胶原、骨钙素、基质金属蛋白酶2 mRNA的表达。
结果与结论:与空白对照组比较,骨水泥抑制了MC3T3-E1细胞增殖活性(P < 0.05),促进了细胞凋亡(P < 0.05),在加入不同浓度乌司他丁后,细胞增殖活性逐渐增强(P < 0.05),凋亡率降低(P < 0.05),且呈剂量时间依赖关系;骨水泥降低了细胞中Ⅰ型胶原、骨钙素表达(P < 0.05),升高了基质金属蛋白酶2表达(P < 0.05),在加入        5 000 U/mL乌司他丁后,细胞基质金属蛋白酶2表达降低,Ⅰ型胶原、骨钙素表达升高(P < 0.05)。骨水泥组无矿化结节,其他组均有矿化结节形成。结果表明乌司他丁对骨水泥诱导MC3T3-E1鼠前成骨细胞凋亡具有一定的抑制作用,可促进成骨细胞中Ⅰ型胶原、骨钙素的生成,并降低基质金属蛋白酶2的表达水平。


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


全文链接:

关键词: 生物材料, 骨生物材料, 乌司他丁, 骨水泥, 成骨细胞, 人工关节, 无菌性松动, 骨溶解, 江苏省自然科学基金

Abstract:

BACKGROUND: Previous studies have indicated that ulinastatin can inhibit RANKL-induced osteoclastogenesis on RAW264.7 cells and also lower matrix metalloproteinase-9 expression and activity. However, it remains be unclear whether ulinastatin has the intervention effect on polymethyl methacrylate (PMMA)-induced MC3T3-E1 mouse preosteoblast apoptosis or not.
OBJECTIVE: To explore the intervention role of ulinastatin on the PMMA-induced MC3T3-E1 mouse preosteoblast apoptosis and its effects on type I collagen, osteocalcin, matrix metalloproteinase-2 mRNA 
expression.
METHODS: MC3T3-E1 mouse preosteoblasts at passages 6 and 7 were divided into four groups: blank group (only cultured MC3T3-E1 mouse preosteoblast), PMMA-induced group (MC3T3-E1 mouse preosteoblast+1 g/L PMMA bone cement suspension), low dose ulinastatin group (MC3T3-E1 mouse preosteoblast+1 g/L PMMA bone cement suspension+500 U/mL ulinastatin) and high dose ulinastatin group (MC3T3-E1 mouse preosteoblast+1 g/L PMMA bone cement suspension+5 000 U/mL ulinastatin). MTT method was adopted to detect the proliferation activity of proliferative activity of MC3T3-E1 mouse preosteoblast; alizarin red staining method was used to observe mineralization nodules of MC3T3-E1 mouse preosteoblast among different groups; the change of apoptosis rate for MC3T3-E1 cells was detected by flow cytometry analysis; semi-quantitative RT-PCR was taken to analyze type I collagen, osteocalcin, matrix metalloproteinase-2 mRNA expression level in MC3T3-E1 mouse preosteoblasts among different groups.
RESULTS AND CONCLUSION: Compared with the blank group, PMMA significantly inhibited the proliferation activity of MC3T3-E1 mouse preosteoblast (P < 0.05), and however significantly promoted cells apoptosis (P < 0.05). After addition of different concentrations of ulinastatin (500, 5 000 U/mL), the proliferation activity of MC3T3-E1 mouse preosteoblasts significantly raised (P < 0.05), and cells apoptosis rate significantly decreased (P < 0.05), showing the dose and time-dependent relation. Type I collagen and osteocalcin mRNA expression levels both significantly decreased after co-culture in PMMA group compared with the blank group (P < 0.05), matrix metalloproteinase-2 mRNA expression level, however, significantly increased (P < 0.05). After intervention with 5000 U/mL ulinastatin, type I collagen and osteocalcin mRNA expression levels both significantly increased, while matrix metalloproteinase-2 mRNA expression level significantly decreased (P < 0.05). PMMA group showed no obvious mineralization nodules. Yet, mineralization nodules were formed in the blank group, high and low dose ulinastatin groups. These results indicate that ulinastatin could have the inhibitory effect on the PMMA-induced MC3T3-E1 mouse preosteoblast apoptosis, and it could promote type I collagen and osteocalcin mRNA expression and yet suppress matrix metalloproteinase-2 mRNA expression.


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


全文链接:

Key words: osteoblasts, osteocalcin, matrix metalloproteinase-2

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