中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (2): 238-244.doi: 10.12307/2025.290

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

脯氨酰羟化酶2抑制剂cpd17对小鼠成骨前体细胞的影响

杜忠秋1,戚晓阳2,杨  平1,于江林3,陈一心2,张林坚4,邱旭升1,2   

  1. 1南京中医药大学鼓楼临床医学院,江苏省南京市  210008;2南京大学医学院附属鼓楼医院骨科,江苏省南京市  210008;3江苏大学鼓楼临床医学院,江苏省南京市  210008;4中国药科大学化学系,江苏省南京市  211198
  • 收稿日期:2024-01-24 接受日期:2024-03-16 出版日期:2025-01-18 发布日期:2024-05-23
  • 通讯作者: 邱旭升,博士,主任医师,副教授,南京中医药大学鼓楼临床医学院,江苏省南京市 210008;南京大学医学院附属鼓楼医院骨科,江苏省南京市 210008
  • 作者简介:杜忠秋,女,1996年生,山东省枣庄市人,汉族,2020年济宁医学院毕业,主要从事骨质疏松方面的研究。
  • 基金资助:
    2021年度南京市卫生科技发展专项(ZKX21029),项目负责人:邱旭升

Effects of the prolyl hydroxylase 2 inhibitor cpd17 on mouse osteogenic precursor cells

Du Zhongqiu1, Qi Xiaoyang2, Yang Ping1, Yu Jianglin3, Chen Yixin2, Zhang Linjian4, Qiu Xusheng1, 2   

  1. 1Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing 210008, Jiangsu Province, China; 2Department of Orthopaedics, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China; 3Nanjing Drum Tower Hospital Clinical College of Jiangsu University, Nanjing 210008, Jiangsu Province, China; 4Department of Chemistry, China Pharmaceutical University, Nanjing 211198,  Jiangsu Province, China
  • Received:2024-01-24 Accepted:2024-03-16 Online:2025-01-18 Published:2024-05-23
  • Contact: Qiu Xusheng, MD, Chief physician, Associate professor, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing 210008, Jiangsu Province, China; Department of Orthopaedics, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
  • About author:Du Zhongqiu, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing 210008, Jiangsu Province, China
  • Supported by:
    2021 Nanjing Health Science and Technology Development Special Project, No. ZKX21029 (to QXS)

摘要:



文题释义:
低氧诱导因子:最初被鉴定为一种促进红细胞生成素基因表达的转录因子。研究发现,在低氧条件下,低氧诱导因子介导了大多数低氧诱导基因的表达。因此,低氧诱导因子被誉为低氧适应调节的管家转录因子。同时它也是由低氧诱导因子α和低氧诱导因子β亚基组成的异源二聚体。低氧诱导因子α亚基可以敏感地感知机体细胞氧浓度的变化,它会调整自身在细胞中的浓度,从而影响低氧诱导因子的整体转录活性,进而影响一系列低氧诱导因子下游信号通路相关功能蛋白的表达,使机体适应缺氧环境。
脯氨酰羟化酶2(prolyl hydroxylase domain 2,PHD2)抑制剂:PHD2是参与低氧诱导因子活性调节的主要酶,这一特征也使得PHD2成为研发细胞氧感知通路相关新药的重要靶点。由于PHD2抑制剂可以稳定低氧诱导因子1α并激活低氧信号通路,从而治疗各类疾病,如肾性贫血,因此,科学家们积极开发PHD2抑制剂类新药用于疾病的治疗。


背景:脯氨酰羟化酶2抑制剂能够调节骨代谢,改善卵巢切除大鼠骨质疏松。cpd17是中国药科大学最新研发的一款小分子口服脯氨酰羟化酶2抑制剂,用于治疗肾性贫血疗效肯定,不良反应小,但是对骨形成和骨吸收的作用还不清楚。
目的:探讨脯氨酰羟化酶2抑制剂cpd17对成骨前体细胞的影响。
方法:采用cpd17处理C57BL/6小鼠成骨前体细胞,检测碱性磷酸酶活性和细胞外基质矿化程度,检测成骨、破骨相关标志物以及脯氨酰羟化酶2、低氧诱导因子1α的表达水平。使用低氧诱导因子1α通路抑制剂LW6抑制低氧诱导因子1α通路后,再次检测碱性磷酸酶活性和细胞外基质矿化程度,以及成骨和破骨分化相关标志物以及脯氨酰羟化酶2、低氧诱导因子1α的表达水平。 
结果与结论:cpd17能显著增强碱性磷酸酶活性和基质矿化程度,上调成骨分化相关标志物的表达,下调破骨分化相关标志物的表达,并上调低氧诱导因子1α表达,下调脯氨酰羟化酶2的表达。而LW6能明显减弱cpd17的作用。结果表明,脯氨酰羟化酶2抑制剂cpd17可通过激活低氧诱导因子1α信号通路促进成骨分化和抑制破骨分化。
https://orcid.org/0009-0001-6546-5429(杜忠秋)
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: 脯氨酰羟化酶2抑制剂, cpd17, 低氧诱导因子, 成骨前体细胞, 成骨分化, 骨质疏松

Abstract: BACKGROUND: Prolyl hydroxylase domain 2 (PHD2) inhibitors can regulate bone metabolism and relieve osteoporosis in ovariectomized rats. cpd17 is a small molecule oral PHD2 inhibitor newly developed by China Pharmaceutical University. It is effective in the treatment of renal anemia with few side effects, but its effect on bone formation and bone resorption is still unclear. 
OBJECTIVE: To investigate the effects of cpd17 on mouse osteogenic precursor cells.
METHODS: Osteogenic precursor cells were treated with cpd17. Alkaline phosphatase activity and extracellular matrix mineralization were measured, and the expression levels of osteogenesis- and osteoclastogenesis-related markers, as well as PHD2 and hypoxia-inducible factor 1α, were detected. After inhibition of the hypoxia-inducible factor 1α pathway using LW6 (a hypoxia-inducible factor 1α pathway inhibitor), alkaline phosphatase activity and extracellular matrix mineralization were detected again, as well as the expression levels of osteogenesis- and osteoclastogenesis-related markers, PHD2 and hypoxia-inducible factor 1α. 
RESULTS AND CONCLUSION: cpd17 significantly enhanced alkaline phosphatase activity and extracellular matrix mineralization, up-regulated the expression of osteogenesis-related markers, down-regulated the expression of osteoclastogenesis-related markers, up-regulated the expression of hypoxia-inducible factor 1α, down-regulate the expression of PHD2. However, cpd17’s effects were significantly attenuated by LW6. To conclude, the PHD2 inhibitor cpd17 promotes osteogenic differentiation and inhibits osteoclastic differentiation through activation of the hypoxia-inducible factor 1α signaling pathway.  

Key words: prolyl hydroxylase domain 2 inhibito, cpd17, hypoxia-inducible factor, osteogenic precursor cell;, osteoblast differentiation, osteoporosis

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