中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (15): 2140-2147.doi: 10.3969/j.issn.2095-4344.2016.15.002

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

淫羊藿苷对激素诱导损伤骨微血管内皮细胞微小RNA表达的影响

赵丁岩1,2,郭万首1,2,俞庆声2,程立明2,王佰亮2   

  1. 1北京中医药大学,北京市  100029;2中日友好医院骨关节外科,骨坏死与关节保留重建中心,北京市  100029
  • 收稿日期:2016-02-10 出版日期:2016-04-08 发布日期:2016-04-08
  • 通讯作者: Guo Wan-shou, M.D., Chief physician, Professor, Doctoral supervisor, Beijing University of Chinese Medicine, Beijing 100029, China; Center for Osteonecrosis and Joint Preserving and Reconstruction, Department of Bone and Joint Surgery, China-Japan Friendship Hospital, Beijing 100029, China
  • 作者简介:赵丁岩,男,1986年生,山西省侯马市人,汉族,北京中医药大学在读博士,主要从事股骨头坏死及关节外科的研究。
  • 基金资助:

    国家自然科学基金资助项目(81273972)

Effects of icariin on microRNAs expression in bone microvascular endothelial cells in steroids-induced femoral head lesions

Zhao Ding-yan1, 2, Guo Wan-shou1, 2, Yu Qing-sheng2, Cheng Li-ming2, Wang Bai-liang2   

  1. 1Beijing University of Chinese Medicine, Beijing 100029, China; 2Center for Osteonecrosis and Joint Preserving and Reconstruction, Department of Bone and Joint Surgery, China-Japan Friendship Hospital, Beijing 100029, China
  • Received:2016-02-10 Online:2016-04-08 Published:2016-04-08
  • Contact: 郭万首,博士,主任医师,教授,博士生导师,中日友好医院骨关节外科,骨坏死与关节保留重建中心,北京市 100029
  • About author:Zhao Ding-yan, Studying for doctorate, Beijing University of Chinese Medicine, Beijing 100029, China; Center for Osteonecrosis and Joint Preserving and Reconstruction, Department of Bone and Joint Surgery, China-Japan Friendship Hospital, Beijing 100029, China
  • Supported by:

     the National Natural Science Foundation of China, No. 81273972

摘要:

文章快速阅读:

 

文题释义:
微小RNA:micro-RNA,简称为mi-RNA,是细胞内源性合成的小分子非编码RNA,通过阻抑蛋白的翻译或者诱导靶mRNA的降解调控基因的表达,在调节生物体生长、发育和疾病发生相关基因表达过程中起到重要作用,既可以通过一个mi-RNA来调控多个靶基因的表达,也可以通过几个mi-RNA的组合来精细调控某个靶基因的表达。据推测mi-RNA调节着人类1/3的基因表达,具有广阔的研究前景。
miR-23b:是一种多功能的非编码mi-RNA,属于miR-23b/27b/24-1基因簇,位于9号染色体9q22.32,本身是基因C9orf3的一部分,该基因簇在多种组织器官中呈现高表达,尤其在肺、心脏等富含血管内皮细胞的组织器官中呈现高表达,参与细胞生长及凋亡、血管形成和干细胞分化等生理过程。
 
背景:近年来研究证实微小RNA广泛参与调控人体发育、细胞增殖分化及凋亡、血管生成、脂质代谢等生理过程,同样微小RNA在股骨头坏死的病理过程中也具有重要的调控作用。作者所在实验室前期研究证实淫羊藿苷具有抑制激素诱导骨微血管内皮细胞凋亡的作用,并且可以显著提高骨微血管内皮细胞促血管生成蛋白粒细胞集落刺激因子的表达。但目前关于淫羊藿苷对骨微血管内皮细胞微小RNA的研究仍处于探索阶段,其具体作用靶点、可能的调节机制及信号通路尚不明确。
目的:探索淫羊藿苷对激素诱导人股骨头骨微血管内皮细胞微小RNA表达的影响及其可能的机制。
方法:采用作者所在实验室建立的方法分离、培养及鉴定人股骨头骨微血管内皮细胞,取第3代骨微血管内皮细胞,建立激素诱导损伤模型及淫羊藿苷预处理模型,采用微小RNA基因芯片对激素组和正常组进行差异性转录,运用实时定量PCR法对明显表达差异miR-339及miR-23b进行验证,同时探讨淫羊藿苷对miR-339及miR-23b表达的影响。
结果与结论:①对微小RNA基因芯片结果进行差异性分析,与正常组相比较,激素组中差异倍数﹥2的微小RNA共有5个,其中1个表达上调,4个表达下调;②实时定量PCR检测结果显示:与正常组相比,激素组中miR-339及miR-23b出现明显变化,与基因芯片结果一致。与激素组相比,淫羊藿苷预处理可以显著提高miR-23b的表达;③结果表明:淫羊藿苷可以有效预防激素诱导骨微血管内皮细胞损伤引起的miR-23b表达失衡,推测淫羊藿苷可能通过介导骨微血管内皮细胞miR-23b的表达参与激素性股骨头坏死病理过程的调控。

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
ORCID: 0000-0002-5835-6144(郭万首)

关键词: 组织构建, 血管内皮细胞, 淫羊藿苷, 激素性股骨头坏死, 骨微血管内皮细胞, 微小RNA基因芯片, 微小RNA, miR-23b, miR-339, 国家自然科学基金

Abstract:

BACKGROUND: MicroRNAs (miRNAs) are widely involved in regulation of physiological processes, such as human development, cell proliferation, differentiation, and apoptosis, angiogenesis and lipid metabolism. MiRNAs also play an important regulating role in the pathological process of femoral head necrosis. At present, the research about the effect of icariin on miRNA expression in glucocorticoid- induced avascular necrosis is still in the exploratory stage, and the specific targets, possible regulation mechanism and signaling pathway remain unclear.
OBJECTIVE: To explore the effect of icariin on miRNA expression of bone microvascular endothelial cells in steroids-induced human femoral head lesions in vitro.
METHODS: Bone microvascular endothelial cells in cancellous bone of the femoral head were isolated and harvested in vitro. Icariin preconditioning preceded establishment of models of glucocorticoid-induced bone microvascular endothelial cell injury. Differential expression profiles and transcriptomes in glucocorticoid and normal groups were tested by miRNA microarrays. The most differentially expressed miR-23b and miR-339 in microarray analysis were further confirmed by real-time quantitative PCR, Meanwhile the effects of icariin on the expression of miR-23b-5p and miR-339-5p were detected.
RESULTS AND CONCLUSION: According to the microarray analysis, one miRNA was up-regulated and four mi RNAs were down-regulated in the glucocorticoid group (fold > 2, P < 0.05). Results of RT-qPCR revealed that miR-23b was down-regulated and miR-339 up-regulated in the glucocorticoid group, which were in agreement with the microarray analysis (P < 0.05). Icariin pretreatment effectively prevented the imbalances of miR-23b expression induced by glucocorticoid (P < 0.01). These findings indicate that Icariin may participate in the pathological process of steroid-induced femoral head necrosis through regulating the expression of miR-23b.
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: Microvessels, Endothelial Cells, Microchip Analytical Procedures, Tissue Engineering