中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (37): 5923-5927.doi: 10.3969/j.issn.2095-4344.2015.37.004

• 骨组织构建 bone tissue construction • 上一篇    下一篇

人成骨细胞分化及骨保护素分泌:R-脊椎蛋白1通过Wnt/β-catenin通路的作用

吴思敏,刘庆梅,马彦云,王久存,赵东宝   

  1. 解放军第二军医大学附属长海医院风湿免疫科,上海市  200433
  • 出版日期:2015-09-10 发布日期:2015-09-10
  • 通讯作者: 赵东宝,博士,教授,主任医师,解放军第二军医大学附属长海医院风湿免疫科,上海市 200433
  • 作者简介:吴思敏,女,1987年生,江苏省南京市人,汉族,2015年解放军第二军医大学毕业,硕士,医师,主要从事成骨细胞及类风湿关节炎相关研究。
  • 基金资助:

    国家自然科学基金(81273284)

Differentiation and osteoprotegerin secretion of human osteoblasts: R-spondin 1 effect via Wnt/beta-catenin signal pathway  

Wu Si-min, Liu Qing-mei, Ma Yan-yun, Wang Jiu-cun, Zhao Dong-bao   

  1. Department of Rheumatology and Immunology, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China
  • Online:2015-09-10 Published:2015-09-10
  • Contact: Zhao Dong-bao, M.D., Professor, Chief physician, Department of Rheumatology and Immunology, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China
  • About author:Wu Si-min, Master, Physician, Department of Rheumatology and Immunology, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81273284 

     

摘要:

背景:研究表明Wnt/β-catenin信号通路活性受抑是类风湿关节炎骨侵蚀的始动因素,增强该通路有望治疗类风湿关节炎关节破坏。R-脊椎蛋白1(RSpo1)可能是Wnt激活剂,尚无人成骨细胞相关研究。
目的:验证R-脊椎蛋白1抑制DKK1促进该细胞的分化成熟。
方法:给予S40转染人成骨细胞株hFOB 1.19 Wnt-3a、R-脊椎蛋白1及Wnt信号通路抑制剂DKK1不同刺激,通过检测细胞增殖、碱性磷酸酶活性及骨保护素水平,观察R-脊椎蛋白1在成骨细胞中的作用。
结果与结论:R-脊椎蛋白1对hFOB 1.19细胞增殖无影响,Wnt-3a上调碱性磷酸酶活性,与R-脊椎蛋白1共刺激可增强该作用;R-脊椎蛋白1可减少DKK1对hFOB1.19细胞碱性磷酸酶活力的抑制作用。R-脊椎蛋白1可提高骨保护素质量浓度,但R-脊椎蛋白1对骨保护素的增强作用大于DKK1对其的抑制作用。提示R-脊椎蛋白1通过抑制DKK1,参与Wnt/β-catenin信号通路,促进成骨细胞分化成熟,分泌骨保护素。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

关键词: 组织构建, 骨细胞, 骨保护素, R-脊椎蛋白1, Wnt, DKK1, hFOB1.19, 成骨细胞, 破骨细胞, 组织工程, 国家自然科学基金

Abstract:

BACKGROUND: Studies have funded that reduced Wnt/β-catenin signaling is involved in the onset and/or progression of bone erosion in rheumatoid arthritis. It can lead to potential new treatment approaches of bone erosion by enhancing Wnt/β-catenin signaling pathway. R-spondin 1 may act as a Wnt agonist, but there is no study in human osteoblasts. 

OBJECTIVE: To verify the effect of R-spondin 1 on promoting differentiation and maturation of human osteoblasts by inhibiting DKK1.

METHODS: S40-transfected human osteoblast lines, hFOB1.19, were treated with R-spondin 1, Wnt-3a and DKK1 to detecting the proliferation, alkaline phoshpatase activity and osteoprotegerin concentration.

RESULTS AND CONCLUSION: R-spondin 1 had no effects on hFOB1.19 cells. Wnt-3a upregulated the activity of alkaline phoshpatase, which could be enhanced by addition of R-spondin 1. R-spondin 1 could reduce the DKK1-mediated inhibition of alkaline phoshpatase activity in hFOB1.19 cells. R-spondin 1 increased the concentration of osteoprotegerin, and moreover, the promotion of osteoprotegerin by R-spondin 1 alone was stronger than the inhibition by DKK1. These findings suggest that R-spondin 1 can inhibit DKK1 by Wnt/β-catenin signal pathway to promote the differential and maturation of human osteoblasts to excrete osteoprotegerin.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Osteoprotegerin, Osteoblasts, Osteoclasts

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