Int J Med Sci:基质胶支架增强牙龈干/前体细胞中BMP9诱导的骨形成

2019-06-13 不详 网络

骨组织工程需要细胞,有效的生物化学和物理化学因素以及生物相容性支架的组合。在这项研究中,我们评估了可注射Matrigel作为支架的潜在用途,用于递送由骨形态发生蛋白(BMP)9转导的大鼠牙囊干/前体细胞(rDFSCs),以增强体外成骨分化并促进体内异位骨形成。使用重组腺病毒在rDFSC中过表达BMP9。使用组织化学染色测定法和化学发光测定试剂盒测量碱性磷酸酶活性。定量实时聚合酶链反应用于确定骨相关

骨组织工程需要细胞,有效的生物化学和物理化学因素以及生物相容性支架的组合。在这项研究中,我们评估了可注射Matrigel作为支架的潜在用途,用于递送由骨形态发生蛋白(BMP)9转导的大鼠牙囊干/前体细胞(rDFSCs),以增强体外成骨分化并促进体内异位骨形成。

使用重组腺病毒在rDFSC中过表达BMP9。使用组织化学染色测定法和化学发光测定试剂盒测量碱性磷酸酶活性。定量实时聚合酶链反应用于确定骨相关基因的mRNA表达水平,包括无远端同源框5(DLX5),骨桥蛋白(OPN),osterix(Osx)和runt相关转录因子2(Runx2)。通过茜素红S染色检查基质矿化。使用细胞计数试剂盒-8测定法分析rDFSC增殖。使用含有rDFSC的基质胶支架的皮下植入,并进行6周时提取的植入物的微型计算机断层扫描分析,组织学评价和三色染色。

结果显示,BMP9增强了rDFSCs中的碱性磷酸酶活性和矿化。由于BMP9刺激,骨相关基因(DLX5,OPN,Osx和Runx2)的表达也增加。微型计算机断层扫描分析和组织学评估显示,从BMP9过表达的rDFSCs中回收的骨量在没有基质胶的患者中明显更明显。

综上所述,该研究表明BMP9有效促进rDFSCs的成骨分化,并且Matrigel在体内促进BMP9诱导的rDFSCs的成骨。

原始出处:

Fu T, Liang P, et al., Matrigel Scaffolding Enhances BMP9-induced Bone Formation in Dental Follicle Stem/Precursor Cells. Int J Med Sci. 2019 Apr 25;16(4):567-575. doi: 10.7150/ijms.30801. eCollection 2019.

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    2019-08-26 HNYYM
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