中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (27): 4325-4329.doi: 10.12307/2022.863

• 组织工程骨材料Tissue-engineered bone • 上一篇    下一篇

纳米淡水珍珠粉对成骨相关基因表达的影响

廖  军,徐  普   

  1. 中南大学湘雅医学院附属海口医院·海南省口腔医学中心,海南省海口市  570208
  • 收稿日期:2021-06-11 接受日期:2021-08-04 出版日期:2022-09-28 发布日期:2022-03-10
  • 通讯作者: 徐普,主任医师,中南大学湘雅医学院附属海口医院·海南省口腔医学中心,海南省海口市 570208
  • 作者简介:廖军,男,1987年生,湖北省荆州市人,汉族,硕士,主要从事骨组织工程研究。
  • 基金资助:
    国家自然科学基金(82060194),项目负责人:徐普

Effect of nanonized freshwater pearl powder on the expression of osteogenic related genes

Liao Jun, Xu Pu   

  1. Affiliated Haikou Hospital of Central South University Xiangya Medical school · Hainan Provincial Stomatology Center, Haikou 570208, Hainan Province, China
  • Received:2021-06-11 Accepted:2021-08-04 Online:2022-09-28 Published:2022-03-10
  • Contact: Xu Pu, Chief physician, Affiliated Haikou Hospital of Central South University Xiangya Medical school · Hainan Provincial Stomatology Center, Haikou 570208, Hainan Province, China
  • About author:Liao Jun, Master, Affiliated Haikou Hospital of Central South University Xiangya Medical school · Hainan Provincial Stomatology Center, Haikou 570208, Hainan Province, China
  • Supported by:
    National Natural Science Foundation of China, No. 82060194 (to XP)

摘要:

文题释义:
珍珠粉:由95%-99%的结晶磷酸盐和1%-5%的有机基质组成,高含量的钙离子可以促进钙盐沉积,抑制破骨细胞骨吸收活性;有机质中的水溶性基质可诱导结缔组织中的成纤维细胞合成纤维性基质蛋白,促进骨髓间质细胞的聚集和向成骨细胞分化,也可通过刺激移植区邻近骨组织中成纤维细胞的细胞外基质蛋白合成来促进骨组织再生。同时,水溶性基质中还可通过阻碍NFATc1的上级调控基因和诱导肌动蛋白环的断裂来抑制破骨细胞的成熟和骨组织的吸收。
Runx2:是成骨细胞和软骨细胞分化的关键转录因子,是Runt家族成员之一。Sp7和经典Wnt信号抑制软骨细胞分化,并使骨祖细胞直接向成骨细胞分化。Runx2是Sp7的上游基因,能直接调节Sp7表达,Runx2、Sp7和经典Wnt传导相互调控,使间充质细胞向成骨细胞方向分化,并抑制脂肪细胞和软骨细胞分化。Runx2被磷酸化后能促进骨钙蛋白的转录,进一步促进成骨细胞的分化。

背景:珍珠中高含量的钙离子可以促进钙盐沉积,抑制破骨细胞的骨吸收活性,促进骨再生,且其含有的水溶性蛋白具有骨诱导作用,可促进成骨细胞的分化。
目的:观察纳米淡水珍珠粉对成骨细胞成骨相关基因表达的影响。
方法:取第3代小鼠成骨细胞MC3T3-E1细胞,分别与纳米淡水珍珠粉(实验组)、纳米羟基磷灰石(对照组)共培养,以单独培养的细胞为阴性对照。培养7 d后,采用RT-PCR实验检测各组Runx2、骨桥蛋白、Ⅰ型胶原mRNA的表达。
结果与结论:①实验组、对照组Runx2与骨桥蛋白mRNA表达量高于阴性对照组(P < 0.05),并且实验组Runx2与骨桥蛋白mRNA表达量高于对照组(P < 0.05);②实验组Ⅰ型胶原mRNA表达量高于对照组、阴性对照组(P < 0.05),对照组与阴性对照组Ⅰ型胶原mRNA表达量比较差异无显著性意义(P > 0.05);③结果表明,纳米淡水珍珠粉较纳米羟基磷灰石更能显著促进成骨相关基因Runx2、骨桥蛋白、Ⅰ型胶原mRNA的表达。

https://orcid.org/0000-0003-3402-5639 (廖军) 

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: 纳米淡水珍珠粉, 纳米羟基磷灰石, 成骨细胞, 成骨相关基因, 骨桥蛋白, Ⅰ型胶原

Abstract: BACKGROUND: The high content of calcium ions in pearls can promote calcium salt deposition, inhibit the bone resorption activity of osteoclasts, and promote bone regeneration. The water-soluble protein contained in pearls has an osteoinductive effect and can promote the differentiation of osteoblasts. 
OBJECTIVE: To observe the effect of nanonized freshwater pearl powder on the expression of osteogenic related genes in osteoblasts.
METHODS: The mouse osteoblast MC3T3-E1 cells at passage 3 were taken and co-cultured with nano freshwater pearl powder (experimental group) and nano-hydroxyapatite (control group). The cells cultured separately were used as negative controls. At 7 days after culture, RT-PCR test was adopted to test the mRNA expression of Runx-related transcription factor II (Runx 2), osteopontin, and collagen type I.
RESULTS AND CONCLUSION: (1) The mRNA expression of Runx2 and osteopontin increased in the experimental group and control group compared with the negative control group (P < 0.05). The mRNA expression of Runx2 and osteopontin was higher in the experimental group than that in the control group (P < 0.05). (2) The mRNA expression of collagen type I was higher in the experimental group than that in the control group and negative control group (P < 0.05). The difference in mRNA expression of collagen type I was not significantly different between the control group and negative control group (P > 0.05). (3) These results suggest that nanonized freshwater pearl powder can significantly promote the expression of Runx2, osteopontin, and collagen type I mRNA better than nano-hydroxyapatite.

Key words: nanonized freshwater pearl powder, nanonized hydroxyapatite, osteoblast, osteogenic related genes, osteopontin, collagen type I

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