Stem Cell Res Ther:术中制备的基于细胞的构建体用于骨再生的功效

2018-11-03 MedSci MedSci原创

常规的基于细胞的骨再生具有以下主要缺点:有限的细胞供应,耗时的体外扩增培养物,以及与细胞分离和多次访问诊所相关的有限的患者友好性。在这里,我们使用“易于获取细胞”的替代概念,其可以以术中方式获得以制备基于细胞的构建体。 我们使用来自人脂肪组织和人单核细胞的基质血管组分(SVF)进行骨组织的术中准备。将衍生自相同供体的扩增的人脂肪组织间充质干细胞(ADMSC)移植的常规构建体设定为阳性对照。另

常规的基于细胞的骨再生具有以下主要缺点:有限的细胞供应,耗时的体外扩增培养物,以及与细胞分离和多次访问诊所相关的有限的患者友好性。在这里,我们使用“易于获取细胞”的替代概念,其可以以术中方式获得以制备基于细胞的构建体。

我们使用来自人脂肪组织和人单核细胞的基质血管组分(SVF)进行骨组织的术中准备。将衍生自相同供体的扩增的人脂肪组织间充质干细胞(ADMSC)移植的常规构建体设定为阳性对照。另外,我们将两种细胞类型与单核细胞组合在一起。在体外评估人SVF和ADMSC与人单核细胞的细胞相互作用。在大鼠股骨髁骨缺损模型中,组织学和组织形态学确定术中构建体的可行性和骨再生能力。

结果显示,与供体匹配的扩增的ADMSCs相比,SVF显示出同样的体外成骨分化,两者在与单核细胞共培养时显著增强。此外,SVF和ADMSCs对单核细胞/巨噬细胞表现出不同的免疫调节作用。在植入大鼠股骨缺损后,与ADMSCs构建体和无细胞对照相比,SVF构建体显示出优异的骨形成,没有观察到单核细胞添加的影响。

总之,该研究结果表明,与供体匹配的ADMSCs构建体相比,术中SVF构建体制备的可行性和其优异的骨再生能力。发现SVF构建体的优越性与SVF和ADMSCs的免疫调节作用之间的明显差异有关。

原始出处:

Yang Zhang, Eline C Grosfeld, et al., Efficacy of intraoperatively prepared cell-based constructs for bone regeneration. Stem Cell Res Ther. 2018; 9: 283.

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    2019-01-08 维他命
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    2018-11-05 lsj630
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