中国组织工程研究 ›› 2020, Vol. 24 ›› Issue (7): 1030-1036.doi: 10.3969/j.issn.2095-4344.2034

• 肿瘤干细胞 cancer stem cells • 上一篇    下一篇

骨碎补总黄酮联合纳米骨材料促进MC3T3-E1细胞的增殖分化

李晋玉1,俞  兴1,姜俊杰2,徐  林1,赵学千1,孙  旗1,郑晨颖1,白春晓1,刘楚吟1,贾育松1   

  1. 1北京中医药大学东直门医院,北京市 100700;2中国中医科学院中医临床基础医学研究所,北京市  100700
  • 收稿日期:2019-07-23 修回日期:2019-07-27 接受日期:2019-09-02 出版日期:2020-03-08 发布日期:2020-01-19
  • 通讯作者: 贾育松,主任医师,北京中医药大学东直门医院,北京市 100700
  • 作者简介:李晋玉,男,1984年生,山西省晋城市人,汉族,2018年北京中医药大学毕业,博士,副主任医师,主要从事中医药在骨组织工程中的应用。
  • 基金资助:
    国家自然科学基金项目(81503601);国家自然科学基金项目(81603517);北京中医药大学东直门医院青苗人才项目(DZMYS-201802)

Promoting effect of osteopractic total flavone combined with nano-bone materials on proliferation and differentiation of MC3T3-E1 cells 

Li Jinyu1, Yu Xing1, Jiang Junjie2, Xu Lin1, Zhao Xueqian1, Sun Qi1, Zheng Chenying1, Bai Chunxiao1, Liu Chuyin1, Jia Yusong1   

  1. 1Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China; 2Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
  • Received:2019-07-23 Revised:2019-07-27 Accepted:2019-09-02 Online:2020-03-08 Published:2020-01-19
  • Contact: Jia Yusong, Chief physician, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
  • About author:Li Jinyu, MD, Associate chief physician, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81503601  and 81603517; the Young Talent Project of Dongzhimen Hospital of Beijing University of Chinese Medicine, No. DZMYS-201802

摘要:

文题释义:

骨碎补总黄酮:是由水龙骨科植物槲蕨的干燥根茎中提取的有效成分,骨碎补总黄酮能够促进成骨细胞增殖,抑制破骨细胞成熟分化。

Wnt/β-catenin信号通路:是一类高度保守的信号通路,广泛存在于多细胞真核生物中,是皮肤发育过程中出现最早的分子信号,调控毛囊的生长发育和毛囊干细胞的迁移分化。β-catenin作为细胞内信号传导蛋白,是Wnt信号通路激活的一种重要的上皮细胞表面黏附分子,能够进入细胞核内传递Wnt信号,进一步激活靶基因开始转录,启动细胞增殖周期。


背景:前期研究发现,骨碎补总黄酮可促进纳米骨材料表面MC3T3-E1细胞的成骨分化,其作用机制有待进一步研究。

目的:探究骨碎补总黄酮联合纳米骨材料对MC3T3-E1细胞发挥作用的机制。

方法:将MC3T3-E1细胞与纳米骨材料共培养,选取100 mg/L和250 mg/L骨碎补总黄酮进行药物干预,以10 μg/L转化生长因子β刺激为阳性对照组。分组如下:①正常组;②DKK1组:Wnt通路抑制剂DKK1      (0.1 mg/L)阻断Wnt/β-catenin信号通路;③DKK1+转化生长因子β组;④DKK1+100 mg/L骨碎补总黄酮组;⑤DKK1+250 mg/L骨碎补总黄酮组;⑥DKK1+纳米骨+转化生长因子β组;⑦DKK1+纳米骨+100 mg/L骨碎补总黄酮组;⑧DKK1+纳米骨+250 mg/L骨碎补总黄酮组。在干预24,48 h后收获细胞,免疫荧光双染法观察Wnt/β-catenin通路中Wnt与LRP结合情况,Real-time PCR和Western blot检测β-catenin、LRP5、Gsk-3β、Cyclin D1、RUNX2的表达。


结果与结论:①激光共聚焦扫描显微镜下显示DKK1+转化生长因子β组、DKK1+250 mg/L骨碎补总黄酮组、DKK1+纳米骨+转化生长因子β组、DKK1+纳米骨+250 mg/L骨碎补总黄酮组棕黄色染色较明显,表明Wnt与LRP结合较其他组更好;②Real-time PCR和Western blot结果显示,骨碎补总黄酮可促进β-catenin、LRP5、RUNX2的表达,下调GSK-3β的表达,说明骨碎补总黄酮通过激活经典Wnt/β-catenin 信号通路促进成骨细胞增殖分化,且骨碎补总黄酮诱导的基因活化呈剂量依赖性。

ORCID: 0000-0002-2031-8644(李晋玉)

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 骨碎补总黄酮, 纳米骨, Wnt/β-catenin信号通路, 成骨细胞, MC3T3-E1细胞

Abstract:

BACKGROUND: Preliminary study has found that osteopractic total flavone can promote osteogenic differentiation of MC3T3-E1 cells on the surface of nano-bone material, but the underlying mechanism needs to be studied in depth.

OBJECTIVE: To investigate the actin mechanism of osteopractic total flavone combined with nano-bone material on MC3T3-E1 cells.

METHODS: MC3T3-E1 cells were co-cultured with nano-bone material, and 100 mg/L and 250 mg/L osteopractic total flavone were treated as drug intervention, including 10 μg/L transforming growth factor-β as positive control. The samples were divided into eight groups: (1) Normal group; (2) DKK1 group: Wnt pathway inhibitor DKK1 (0.1 mg/L) blocks Wnt/β-catenin signaling pathway; (3) DKK1+transforming growth factor-β group; (4) DKK1+100 mg/L osteopractic total flavone group; (5) DKK1+250 mg/L osteopractic total flavone group; (6) DKK1+ nano-hydroxyapatite/collagen+transforming growth factor-β group; (7) DKK1+nano-hydroxyapatite/collagen+100 mg/L osteopractic total flavone group; (8) DKK1+nano-hydroxyapatite/collagen+250 mg/L osteopractic total flavone group. Cells in each group were harvested after 24 and 48 hours of intervention. Immunofluorescence labeling was used to observe the binding of Wnt and LRP in osteoblasts in the Wnt/β-catenin pathway. The expression of β-catenin, LRP 5, GSK-3β, Cyclin D1, and RUNX2 was detected by real-time polymerase chain reaction and western blot assay.

RESULTS AND CONCLUSION: (1) Confocal laser scanning microscope showed that obvious brown and yellow staining was shown in the DKK1+transforming growth factor-β group, DKK1+250 mg/L osteopractic total flavone group, DKK1+nano-hydroxyapatite/ collagen+transforming growth factor-β group, and DKK1+nano-hydroxyapatite/collagen+250 mg/L osteopractic total flavone group, indicating that Wnt and LRP combined better than other groups. (2) Real-time polymerase chain reaction and western blot assay results showed that osteopractic total flavone could promote the expression of β-catenin, LRP5 and RUNX2, and downregulated GSK3β expression. These findings confirm that osteopractic total flavone can promote the differentiation and proliferation of osteoblasts by activating the Wnt/β-catenin signaling pathway. Gene activation induced by osteopractic total flavone was dose-dependent.

Key words: osteopractic total flavone, nano bone, Wnt/β-catenin signaling pathway, osteoblasts, MC3T3-E1 cells

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