J Orthop Res:去氯雷他定通过抑制BMP2-Smad1 / 5/8信号传导抑制异位骨化

2020-02-14 不详 网络

异位骨化(HO)是一种病理状况,其中异位骨在诸如骨骼肌的软组织内形成。本研究中,研究人员将HO原始细胞的人血小板衍生生长因子受体α阳性(PDGFRα+)细胞与FDA批准的化合物一起在成骨分化培养基中培养。测量碱性磷酸酶活性作为抑制成骨分化的筛选。对于抑制PDGFRα+细胞成骨分化的化合物,我们使用茜素红S染色检查了其作用的剂量依赖性,并使用WST-8检查了其细胞毒性。另外,通过蛋白质印迹分析研究了

异位骨化(HO)是一种病理状况,其中异位骨在诸如骨骼肌的软组织内形成。

本研究中,研究人员将HO原始细胞的人血小板衍生生长因子受体α阳性(PDGFRα+)细胞与FDA批准的化合物一起在成骨分化培养基中培养。测量碱性磷酸酶活性作为抑制成骨分化的筛选。对于抑制PDGFRα+细胞成骨分化的化合物,我们使用茜素红S染色检查了其作用的剂量依赖性,并使用WST-8检查了其细胞毒性。另外,通过蛋白质印迹分析研究了成骨分化的主要信号BMP-Smad信号传导的调控,以阐明该化合物抑制成骨作用的机制。在体内实验中,在小鼠中完成跟腱的横向切口,并且在手术后通过与饮用水混合来给小鼠喂食该化合物。术后十周,通过微计算机断层扫描(CT)扫描评估和量化HO。

结果显示,去氯雷他定通过药物重新定位方法抑制了PDGFRα+细胞的成骨分化。去氯雷他定剂量依赖性地抑制细胞的成骨分化,而没有细胞毒性。去氯雷他定抑制PDGFRα+细胞中BMP2诱导的Smad1 / 5/8的磷酸化。在跟腱切开术小鼠模型中,与对照组相比,去氯雷他定治疗显著抑制了异位骨形成。

总之,我们发现去氯雷他定可以使用人PDGFRα+细胞抑制成骨分化,并可以在体内使用跟腱切开术异位骨形成模型证明其功效。我们的研究为保证HO的安全性铺平了在早期临床使用中抑制HO的方法。

原始出处:

Kusano T, Nakatani M, et al., Desloratadine inhibits heterotopic ossification by suppression of BMP2-Smad1/5/8 signaling. J Orthop Res. 2020 Feb 11. doi: 10.1002/jor.24625.

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    2020-11-23 wshxjq
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    2020-05-31 hb2008ye
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    2020-11-23 zhangjiqing
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    2020-12-14 heli0118
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    2020-02-16 江川靖瑶