中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (13): 2648-2654.doi: 10.12307/2025.060

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

小分子药物TD-198946促进大鼠骨髓间充质干细胞的成骨分化

杨  超,罗宗平   

  1. 苏州大学附属第一医院骨科,苏州大学骨科研究所,江苏省苏州市   215006
  • 收稿日期:2024-01-20 接受日期:2024-04-13 出版日期:2025-05-08 发布日期:2024-09-11
  • 通讯作者: 罗宗平,博士,教授,苏州大学附属第一医院骨科,苏州大学骨科研究所,江苏省苏州市 215006
  • 作者简介:杨超,男,1998年生,河南省南阳市人,苏州大学附属第一医院在读硕士,主要从事间充质干细胞成骨分化相关研究。
  • 基金资助:
    国家自然科学基金项目(32071307),项目负责人:罗宗平

Small molecule drug TD-198946 enhances osteogenic differentiation of rat bone marrow mesenchymal stem cells

Yang Chao, Luo Zongping   

  1. Department of Orthopedics, First Affiliated Hospital of Soochow University, Institute of Orthopedics of Soochow University, Suzhou 215006, Jiangsu Province, China
  • Received:2024-01-20 Accepted:2024-04-13 Online:2025-05-08 Published:2024-09-11
  • Contact: Luo Zongping, MD, Professor, Department of Orthopedics, First Affiliated Hospital of Soochow University, Institute of Orthopedics of Soochow University, Suzhou 215006, Jiangsu Province, China
  • About author:Yang Chao, Master candidate, Department of Orthopedics, First Affiliated Hospital of Soochow University, Institute of Orthopedics of Soochow University, Suzhou 215006, Jiangsu Province, China
  • Supported by:
    National Natural Science Foundation of China, No. 32071307 (to LZP)

摘要:

文题释义:

TD-198946:一种噻吩吲唑衍生物,可以诱导干细胞向软骨方向分化,用于治疗软骨退变与髓核退变。
成骨分化:指多能干细胞转化为成骨细胞进而生成完整骨组织的过程。这个过程在骨骼的形成、生长和修复中起着至关重要的作用。

摘要
背景:小分子药物TD-198946是一种能诱导干细胞形成软骨的高效软骨生成剂,但目前尚不清楚其对成骨分化的作用。
目的:探讨小分子药物TD-198946促进大鼠骨髓间充质干细胞成骨分化的效果及其作用机制。
方法:提取SD大鼠骨髓间充质干细胞,利用CCK-8法评估不同浓度TD-198946对骨髓间充质干细胞增殖的影响,确定TD-198946的最佳使用浓度;然后加入最适浓度TD-198946和成骨分化培养基对骨髓间充质干细胞进行成骨诱导;成骨诱导第3天用qRT-PCR检测碱性磷酸酶、Runt相关转录因子2、骨桥蛋白、骨钙蛋白、Ⅰ型胶原基因表达;成骨诱导第7天进行碱性磷酸酶染色,Western blot检测Runt相关转录因子2、Ⅰ型胶原、AKT、p-AKT、PI3K、p-PI3K蛋白表达;成骨诱导第21天进行茜素红染色。
结果与结论:①CCK-8实验结果显示,100 nmol/L TD-198946能促进骨髓间充质干细胞增殖;②碱性磷酸酶染色及茜素红染色结果显示,TD-198946能促进大鼠骨髓间充质干细胞的成骨分化;③qRT-PCR结果显示,TD-198946可促进成骨相关基因碱性磷酸酶、Runt 相关转录因子2、骨桥蛋白、骨钙蛋白、Ⅰ型胶原的表达;④Western blot结果显示,TD-198946可促进Runt相关转录因子2、Ⅰ型胶原以及p-PI3K、p-AKT蛋白表达。结果表明,小分子药物TD-198946可能通过激活PI3K/AKT信号通路,诱导大鼠骨髓间充质干细胞成骨分化。

https://orcid.org/0000-0001-7246-7003 (罗宗平) 

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: 骨髓间充质干细胞, TD-198946, 成骨分化, PI3K/AKT信号通路, AKT, p-AKT

Abstract: BACKGROUND: TD-198946 is a small molecule drug known to induce stem cells to form cartilage; however, its effect on osteogenic differentiation remains unclear. 
OBJECTIVE: To investigate the effects of the small molecule drug TD-198946 on promoting osteoblastic differentiation of rat bone marrow mesenchymal stem cells and its mechanism of action. 
METHODS: Bone marrow mesenchymal stem cells (BMSCs) were extracted from SD rats. CCK-8 assay was used to evaluate the effect of different concentrations of TD-198946 on the proliferation of bone marrow mesenchymal stem cells to determine the optimal concentration of TD-198946. Then, the optimal concentration of TD-198946 and osteogenic medium were added to induce osteogenic differentiation of bone marrow mesenchymal stem cells. On day 3, qRT-PCR was used to detect the expression of alkaline phosphatase, Runt-related transcription factor 2, osteopontin, osteocalcin, and type I collagen genes. On day 7 of osteogenic induction, alkaline phosphatase staining and western blot assay were performed to detect the expression of Runt-related transcription factor 2, type I collagen, AKT, p-AKT, PI3K, and p-PI3K proteins. On day 21 of osteogenic induction, Alizarin red staining was conducted. 
RESULTS AND CONCLUSION: (1) CCK-8 assay results revealed that 100 nmol/L TD-198946 could promote the proliferation of bone marrow mesenchymal stem cells. (2) The results of alkaline phosphatase staining and alizarin red staining showed that TD-198946 could promote osteogenic differentiation of rat bone marrow mesenchymal stem cells. (3) qRT-PCR results showed that TD-198946 could promote the expression of osteogenic genes alkaline phosphatase, Runt-related transcription factor 2, osteopontin, osteocalcin, and type I collagen. (4) Western blot assay results showed that TD-198946 could enhance the expression of Runt-related transcription factor 2, type I collagen, p-PI3K, and p-AKT. The results indicate that the small molecule drug TD-198946 may induce osteogenic differentiation of rat bone marrow mesenchymal stem cells by activating the PI3K/AKT signaling pathway.

Key words: bone marrow mesenchymal stem cell, TD-198946, osteogenic differentiation, PI3K/AKT signaling pathway, AKT, p-AKT

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