Exp Mol Med:Notch配体Jagged1促进基于间充质基质细胞的软骨修复

2018-11-02 MedSci MedSci原创

胎盘来源的间充质基质细胞(PMSCs)为组织再生提供了有希望的细胞来源。然而,在治疗性移植期间快速诱导PMSCs软骨形成分化仍然极具挑战性。在这里,我们进行了一项研究,以确定可溶性Jagged1(JAG1)肽的Notch抑制是否可用于加速小鼠创伤后骨关节炎(PTOA)模型中PMSCs诱导的软骨再生。 结果显示,用可溶性JAG1处理PMSCs明显增强了培养物中的软骨形成,正如通过与IgG处理的

胎盘来源的间充质基质细胞(PMSCs)为组织再生提供了有希望的细胞来源。然而,在治疗性移植期间快速诱导PMSCs软骨形成分化仍然极具挑战性。在这里,我们进行了一项研究,以确定可溶性Jagged1(JAG1)肽的Notch抑制是否可用于加速小鼠创伤后骨关节炎(PTOA)模型中PMSCs诱导的软骨再生。

结果显示,用可溶性JAG1处理PMSCs明显增强了培养物中的软骨形成,正如通过与IgG处理的对照细胞中的那些相比,阿尔新蓝染色增加和Notch靶Hes1的表达降低。重要的是,当将JAG1处理的PMSCs注射到小鼠PTOA膝关节中时,观察到软骨形成明显增强,而关节炎症明显减少。最后,体内细胞示踪显示,在注射后4周,更多JAG1处理的PMSCs保留在膝关节组织中,并且JAG1处理的PMSCs表现出比IgG处理的对照PMSCs更大的PMSCs软骨形成分化。

综上所述,这些数据表明可溶性JAG1的瞬时Notch抑制可用于增强PMSCs存活和软骨形成分化,从而增加PMSCs对软骨再生的治疗潜力。

原始出处:

Junkui Sun, Zhengliang Luo, et al., Notch ligand Jagged1 promotes mesenchymal stromal cell-based cartilage repair. Exp Mol Med. 2018 Sep; 50(9): 126.

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    2019-07-02 zhaojie88
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    2019-05-26 axin020
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    2018-11-04 karmond
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    2018-11-04 ymljack
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