中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (11): 1722-1727.doi: 10.12307/2022.1021

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

柚皮苷调控成骨细胞成骨分化的机制

吴晶晶1,林海雄2,3,孙伟鹏1,李紫阁1,姜自伟4   

  1. 1广州中医药大学第一临床医学院,广东省广州市  510405;2宁夏回族自治区中医医院暨中医研究所,宁夏回族自治区银川市  750000;3香港中文大学组织工程与再生医学研究所,香港特别行政区  999077;4广州中医药大学第一附属医院,广东省广州市  510405
  • 收稿日期:2021-11-08 接受日期:2022-02-24 出版日期:2023-04-18 发布日期:2022-09-24
  • 通讯作者: 姜自伟,博士,教授,副主任医师,广州中医药大学第一附属医院,广东省广州市 510405
  • 作者简介:吴晶晶,女,1994年生,四川省资中县人,汉族,广州中医药大学在读硕士,主要从事中医药治疗骨与关节损伤的研究。
  • 基金资助:
    国家自然科学基金(81774337),项目负责人:姜自伟

Mechanism by which naringin regulates osteogenic differentiation in osteoblasts

Wu Jingjing1, Lin Haixiong2,3, Sun Weipeng1, Li Zige1, Jiang Ziwei4   

  1. 1The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou 510405; 2Ningxia Chinese Medicine Research Center, Yinchuan 750000; 3Institute of Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Sha Tin 999077, Hong Kong Special Administrative Region, China; 4The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405
  • Received:2021-11-08 Accepted:2022-02-24 Online:2023-04-18 Published:2022-09-24
  • Contact: Jiang Ziwei, MD, Professor, Associate chief physician, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • About author:Wu Jingjing, Master candidate, The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81774337 (to JZW)

摘要:

文题释义:
柚皮苷:是一种由葡萄糖、鼠李糖等构成的天然黄酮化合物。作为骨碎补总黄酮的主要有效成分之一,在临床应用时,柚皮苷对促进骨折愈合、抗骨质疏松、抗炎、抗氧化应激等具有良好的疗效。
MiR-206:作为在生物体中广泛存在的一类小分子单链编码RNA,microRNAs已被公认与细胞的增殖、分化和凋亡等过程密切相关,也在骨组织生长、发育、重塑的过程中发挥着重要作用。其中miR-206最早在骨骼肌细胞中被发现,而后发现成骨细胞也能表达miR-206,进一步研究发现miR-206与骨损伤修复密切相关。

背景:研究发现,柚皮苷主要通过Wnt、转化生长因子β、MAPK信号通路、破骨细胞信号通路等直接影响骨代谢,通过P13K-Akt、血管内皮生长因子信号通路等间接调节骨代谢,具有促进骨损伤修复、减缓骨质疏松的作用。
目的:探讨柚皮苷通过下调miR-206表达靶向激活缝隙连接蛋白43/ERK1信号通路对成骨细胞增殖和成骨分化的影响。 
方法:将大鼠成骨细胞(ROB细胞)经不同质量浓度柚皮苷(1,10,100 mg/L及1,10 g/L)处理培养,并进行CCK-8实验检测细胞增殖情况,筛选出柚皮苷质量浓度100 mg/L及1,10 g/L用于后续实验,并以未给药培养做对照组。RT-qPCR检测ROB细胞中miR-206、缝隙连接蛋白43 及ERK1 mRNA相对表达水平,验证其靶向关系;Western blot检测ROB细胞中ERK1/2、P-ERK蛋白的表达水平;碱性磷酸酶染色及茜素红染色观察ROB细胞内碱性磷酸酶活性及细胞钙化能力。
结果与结论:①柚皮苷能显著促进ROB细胞的增殖活性(P < 0.05),柚皮苷在一定质量浓度范围内,随着给药浓度升高,ROB细胞吸光度值和相对增殖率均相应升高,在质量浓度为1 g/L时细胞增殖活性最强;②柚皮苷能显著抑制ROB细胞内miR-206 mRNA的表达并靶向促进成骨分化指标缝隙连接蛋白43 mRNA及ERK1/2、P-ERK蛋白的表达(P < 0.05);③碱性磷酸酶染色及茜素红染色结果提示柚皮苷能显著促进ROB细胞内碱性磷酸酶活性和表达以及细胞钙化能力水平(P < 0.05),其中1 g/L质量浓度处理的效果最佳;④柚皮苷通过下调miR-206表达,靶向激活缝隙连接蛋白43/ERK1信号通路,进而促进ROB细胞增殖活性及成骨分化能力。

https://orcid.org/0000-0002-4883-7331(吴晶晶)

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: 柚皮苷, miR-206, Cx43, ERK1, 成骨细胞, 骨损伤, 骨碎补, miRNAs

Abstract: BACKGROUND: Studies have found that naringin affects bone metabolism directly through Wnt, transforming growth factor β, MAPK signaling pathway, and osteoclast signaling pathway, as well as indirectly through P13K-Akt and vascular endothelial growth factor signaling pathway. Naringin can promote bone repair and retard osteoporosis. 
OBJECTIVE: To investigate the effect of naringin on the proliferation and osteogenic differentiation of osteoblasts by targeting the activation of connexin 43/ERK1 signaling pathway through down-regulation of miR-206.
METHODS: Rat osteoblasts (ROB cells) were treated and cultured with different concentrations of naringin (1, 10, 100 mg/L and 1, 10 g/L), and the cell proliferation was detected by cell counting kit-8 assay. Naringin at 100 mg/L and 1, 10 g/L were used for subsequent experiments. Osteoblasts with non-drug culture were used as controls. RT-qPCR was used to detect the relative expression levels of miR-206, connexin 43 and ERK1 mRNAs in ROB cells to verify their targeting relationship. Western blot was used to detect the protein expression levels of ERK1/2 and P-ERK in ROB cells. Alkaline phosphatase activity and calcification ability in ROB cells were observed by alkaline phosphatase staining and alizarin red staining, respectively.
RESULTS AND CONCLUSION: Naringin significantly promoted the proliferation activity of ROB cells (P < 0.05). The absorbance value and relative proliferation rate of ROB cells increased as the administration concentration of naringin increased in a certain range. When the mass concentration was 1 g/L, the cell proliferation activity was the strongest. Naringin significantly inhibited the expression of miR-206 mRNA in ROB cells and promoted the expression of connexin 43 mRNA and ERK1/2 and P-ERK protein (P < 0.05). Naringin could significantly promote the activity and expression of alkaline phosphatase and the level of cellular calcification in ROB cells (P < 0.05). Moreover, naringin at 1 g/L showed the best effect. To conclude, naringin can target and activate the connexin 43/ERK1 signaling pathway by down-regulating the expression of miR-206, thereby promoting the proliferation and osteogenic differentiation of ROB cells.

Key words: naringin, miR-206, Cx43, ERK1, osteoblast, bone injury, drynariae, microRNAs

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