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Biomaterials:人骨髓间充质干细胞在其自身细胞外基质内的软骨内骨化来实现骨再生

2019-07-28 不详 网络

间充质干细胞(MSC)嵌入其分泌的细胞外基质(mECM)中构成能够产生不同类型组织的外源无支架构建体。目前尚不清楚MSC-mECM构建体是否可以重现软骨内骨化(ECO),这是体内骨骼发生过程中的发育过程。本研究发现,MSC-mECM构建体在顺序暴露于软骨形成和成骨信号时通过软骨内骨化的过程在体外和体内产生稳健的骨形成。有趣的是,引入了新的胰蛋白酶预处理以改变细胞形态,这使得MSC-mECM构建体经

间充质干细胞(MSC)嵌入其分泌的细胞外基质(mECM)中构成能够产生不同类型组织的外源无支架构建体。目前尚不清楚MSC-mECM构建体是否可以重现软骨内骨化(ECO),这是体内骨骼发生过程中的发育过程。

本研究发现,MSC-mECM构建体在顺序暴露于软骨形成和成骨信号时通过软骨内骨化的过程在体外和体内产生稳健的骨形成。有趣的是,引入了新的胰蛋白酶预处理以改变细胞形态,这使得MSC-mECM构建体经历N-钙粘蛋白介导的发育缩合过程和随后的软骨形成。此外,与仅在成骨培养基中的常规体外培养相比,ECO方案明显增强了MSC-mECM构建体的骨形成。这被设计用于促进长骨形成,如在膜内骨化(IMO)中所见。

总之,本研究报道的发育信息方法代表了一种强大而有效的干细胞骨生成方法,优于传统的成骨诱导方法。

原始出处:

Liu Y, Kuang B, et al., Robust bone regeneration through endochondral ossification of human mesenchymal stem cells within their own extracellular matrix. Biomaterials. 2019 Jul 6;218:119336. doi: 10.1016/j.biomaterials.2019.119336.

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    2019-08-03 sunylz
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    2019-07-31 独孤立克

    干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦

    0

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    2019-07-30 lsj630
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