中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (21): 3329-3333.doi: 10.3969/j.issn.2095-4344.2014.21.009

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

新型自组装水凝胶NBD/RADA16可促进前成骨细胞的分化

赵  刚,李京玲,王  丹,于  静,赵艳宇,满大鹏   

  1. 佳木斯大学第二附属医院口腔医学院,黑龙江省佳木斯市  154007
  • 出版日期:2014-05-21 发布日期:2014-05-21
  • 通讯作者: 李京玲,佳木斯大学第二附属医院口腔医学院,黑龙江省佳木斯市 154007
  • 作者简介:赵刚,男,1975年生,副教授,研究生导师,主要从事临床正畸治疗及教学工作。

Preosteoblastic differentiation of MC3T3 E1 cells on the new-type self-assembling peptide hydrogel NBD/RADA16

Zhao Gang, Li Jing-ling, Wang Dan, Yu Jing, Zhao Yan-yu, Man Da-peng   

  1. School of Stomatology, Second Affiliated Hospital of Jiamusi University, Jiamusi 154007, Heilongjiang Province, China
  • Online:2014-05-21 Published:2014-05-21
  • Contact: Li Jing-ling, School of Stomatology, Second Affiliated Hospital of Jiamusi University, Jiamusi 154007, Heilongjiang Province, China
  • About author:Zhao Gang, Associate professor, Master’s supervisor, School of Stomatology, Second Affiliated Hospital of Jiamusi University, Jiamusi 154007, Heilongjiang Province, China

摘要:

背景:RADA16是较成熟的自组装纳米短肽材料,在亲水面往复形成互补离子键,可组装为纳米纤维,并且能够促MC3T3 E1细胞的黏附、伸展和增殖。
目的:观察新型自组装多肽水凝胶NBD/RADA16对小鼠前成骨细胞MC3T3 E1成骨分化能力的影响。
方法:将MC3T3 E1细胞分别接种于自组装多肽水凝胶NBD/RADA16与RADA16水凝胶中,进行成骨诱导培养,以单纯成骨诱导培养的细胞为对照。诱导培养1,3,6 d检测细胞碱性磷酸酶活性;诱导培养7 d后,Western Blot检测细胞骨形态发生蛋白2的表达;诱导培养21 d后,茜素红染色观察细胞钙化结节。
结果与结论:MC3T3 E1细胞在NBD/RADA16多肽水凝胶上生长状态良好,优于在RADA16上生长的细胞。自组装多肽水凝胶NBD/RADA16上MC3T3 E1细胞的碱性磷酸酶活性高于RADA16水凝胶上及单纯成骨诱导培养的细胞(P < 0.01)。自组装多肽水凝胶NBD/RADA16上MC3T3 E1细胞的矿化基质沉积、骨形态发生蛋白2表达高于RADA16水凝胶上的细胞(P < 0.01)。结果提示NBD/RADA16自组装多肽水凝胶较RADA16水凝胶更能促进MC3T3 E1细胞的成骨分化。


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, 纳米材料, NBD/RADA16, 多肽水凝胶, 三维培养, 成骨细胞分化

Abstract:

BACKGROUND: RADA16 is a mature amphiphilic self-assembling peptide, which can be assembled into nanofibers, and promote MC3T3 E1 cell attachment, spreading and proliferation.
OBJECTIVE: To observe the effects of the new-type self-assembling peptide hydrogel NBD/RADA16 on osteogenic differentiation of mouse preosteoblasts MC3T3 E1.
METHODS: The MC3T3 E1 cells were inoculated in NBD/RADA16 self-assembling peptide hydrogel and RADA16 hydrogel for osteogenic induction. Cells undergoing simple osteogenic induction served as controls. After culture for 1, 3, 6 days, the activity of alkaline phosphatase was detected. After 7 days, western blot assay was used to determine the expression of bone morphogenetic protein-2. After 21 days, alizarin red staining was used to observe calcified nodules.
RESULTS AND CONCLUSION: MC3T3 E1 cells grew well on the NBD/RADA16 peptide hydrogel, which were superior to those on the RADA16 hydrogel. The activity of alkaline phoshpatase was higher in the NBD/RADA16 group than the RADA16 and control groups (P < 0.01). Compared with the RADA16 hydrogel, mineralized matrix deposition and expression of bone morphogenetic protein-2 were higher on the NBD/RADA16 peptide hydrogel (P < 0.01). These findings indicate that the NBD/RADA16 peptide hydrogel is superior to the RADA16 hydrogel for promoting the osteogenic differentiation of MC3T3 E1 cells.


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: hydrogel, peptides, osteoblasts

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