中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (35): 5636-5641.doi: 10.12307/2024.595

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

葛根素通过Notch1信号通路抑制Raw264.7细胞向破骨细胞的分化

刘春丽,闫雨娟,莫礼文,吴志杰,张  黎   

  1. 海南医学院口腔医学院,海南省海口市  571101
  • 收稿日期:2023-11-11 接受日期:2023-12-21 出版日期:2024-12-18 发布日期:2024-03-15
  • 通讯作者: 张黎,副教授,海南医学院口腔医学院,海南省海口市 571101
  • 作者简介:刘春丽,女,1989年生,海南省海口市人,汉族,主治医师,主要从事牙周病学研究。
  • 基金资助:
    海南省财政科技计划资助项目-海南省2020年重点研发计划社会发展专项(ZDYF2020166),项目负责人:张黎;海南省财政科技计划资助项目-海南省2023年重点研发社会发展专项(ZDYF2023SHFZ095),项目负责人:张黎

Puerarin inhibits the differentiation of Raw264.7 cells into osteoclasts through the Notch signaling pathway

Liu Chunli, Yan Yujuan, Mo Liwen, Wu Zhijie, Zhang Li   

  1. School of Stomatology, Hainan Medical University, Haikou 571101, Hainan Province, China
  • Received:2023-11-11 Accepted:2023-12-21 Online:2024-12-18 Published:2024-03-15
  • Contact: Zhang Li, Associate chief physician, School of Stomatology, Hainan Medical University, Haikou 571101, Hainan Province, China
  • About author:Liu Chunli, Attending physician, School of Stomatology, Hainan Medical University, Haikou 571101, Hainan Province, China
  • Supported by:
    Hainan Provincial Finance Science and Technology Program Funding Project - Hainan Provincial Key R&D Program for Social Development in 2020, No. ZDYF2020166 (to ZL); Hainan Provincial Finance Science and Technology Program Funding Project - Hainan Provincial Key R&D Program for Social Development in 2023, No. ZDYF2023SHFZ095 (to ZL)

摘要:


文题释义:

葛根素:分离自临床常用中药葛根,是一种具有改善血液循环、预防肿瘤、抗炎和抗氧化的异黄酮衍生物,作者前期研究表明葛根素可以治疗牙周炎病变,抑制破骨细胞的分化和成熟。
Notch1信号通路:通过Notch1受体和配体的相互结合完成信息交换,可以调控细胞分化和功能。Notch信号通路是骨骼稳态调控的一种重要途径。


背景:前期研究表明葛根素干预后破骨细胞的分化被抑制,Notch1、HES1、Jagged1等Notch信号通路相关蛋白表达量下降,但Notch1信号通路对于葛根素抑制破骨细胞分化的作用机制尚不明确。

目的:探究Notch信号通路对葛根素抑制小鼠巨噬细胞Raw264.7分化为破骨细胞的影响。
方法:将Raw264.7细胞分为7组干预培养,空白对照组采用DMEM高糖完全培养基培养,破骨细胞诱导组采用破骨诱导培养基培养,葛根素干预组在破骨诱导的同时加入50 μmol/L葛根素培养,葛根素+Notch1 siRNA 对照组、葛根素+Notch1 siRNA组、葛根素+Notch1过表达对照组、葛根素+Notch1过表达组分别采用Notch1 siRNA对照序列、Notch1 siRNA序列、Notch1过表达对照质粒、Notch1过表达质粒转染Raw264.7细胞后,加入破骨诱导培养基和葛根素进行培养。培养7 d后,采用抗酒石酸酸性磷酸酶染色观察破骨细胞的数量和大小,F-actin染色观察破骨细胞骨架形成情况,RT-PCR检测破骨细胞形成标志物的基因表达水平。

结果与结论:①抗酒石酸酸性磷酸酶染色显示:葛根素干预可以抑制破骨细胞的生成,Notch1沉默会进一步减少破骨细胞的生成数量,Notch1过表达后破骨细胞生成数量明显增加;②F-actin染色显示:Raw264.7细胞经破骨诱导可以形成边界清晰的F-actin环,葛根素干预会抑制细胞骨架的形成,Notch1沉默会增强葛根素的抑制作用,而Notch1过表达则能减弱葛根素的抑制作用;③RT-PCR检测显示,葛根素可以抑制抗酒石酸酸性磷酸酶、组织蛋白酶K和c-Fos的mRNA表达,Notch1沉默后上述3个因子的mRNA表达进一步降低,Notch1过表达后上述3个因子的mRNA表达增加。结果表明:Notch信号通路在Raw264.7细胞分化为破骨细胞的过程中发挥作用,葛根素通过抑制Notch信号通路抑制Raw264.7细胞分化为破骨细胞。

https://orcid.org/0000-0003-2174-022X(刘春丽)

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: 葛根素, Raw264.7细胞, Notch1, 过表达, 沉默, 破骨诱导, 破骨细胞, 牙周炎

Abstract: BACKGROUND: Previous studies have shown that puerarin can inhibit the differentiation of osteoclasts, and the expression of Notch signaling pathway-related proteins such as Notch1, HES1, and Jagged1 is decreased. However, the specific mechanism of the Notch1 signaling pathway for the inhibition of osteoclast differentiation by puerarin is not clear.
OBJECTIVE: To explore the effect of Notch signaling pathway on puerarin inhibiting the differentiation of mouse macrophage Raw264.7 into osteoclasts.
METHODS: Raw264.7 cells were divided into seven groups for intervention culture. Blank control group was cultured in high-sugar DMEM medium; the osteoclast induction group was cultured in osteoclast induction medium; the puerarin intervention group was cultured with 50 μmol/L puerarin at the same time of osteoclast induction; Notch1 siRNA control group, Notch1 siRNA group, Notch1 overexpression control group and Notch1 overexpression group were transfected with Notch1 siRNA control sequence, Notch1 siRNA, Notch1 overexpression control plasmid and Notch1 overexpression plasmid, respectively, and then cultured with osteoclast induction medium and puerarin. The number and size of osteoclasts were observed by tartrate-resistant acid phosphatase staining, the skeleton formation of osteoclasts was observed by F-actin staining, and the gene expression level of osteoclast formation markers was detected by RT-PCR.
RESULTS AND CONCLUSION: Tartrate-resistant acid phosphatase staining results showed that puerarin intervention could inhibit the generation of osteoclasts, Notch1 silencing could further reduce the number of osteoclasts, while the number of osteoclasts in the osteoclast-induced group increased significantly after Notch1 overexpression. The results of F-actin showed that Raw264.7 cells could form a well-defined F-actin ring after osteoclast induction. Puerarin intervention would inhibit the formation of cytoskeleton, and Notch1 silencing could aggravate the inhibitory effect of cytoskeleton formation, while Notch1 overexpression could alleviate this inhibitory effect of puerarin. RT-PCR results showed that puerarin could inhibit the mRNA expression levels of tartrate-resistant acid phosphatase, Cathepsin K and c-Fos, the expression of the above-mentioned three factors decreased significantly after Notch1 gene silencing, and Notch1 overexpression could upregulate the expression of these factors. These finding indicate that puerarin inhibits the differentiation of Raw264.7 cells into osteoclasts through the Notch signaling pathway.

Key words: puerarin, Raw264.7 cells, Notch1, overexpression, silence, osteoclast induction, osteoclast, periodontitis

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