J Dent Res:MSC/ECM细胞复合物可以诱导牙周组织再生

2017-05-30 lishiting MedSci原创

间充质干细胞(MSC)拥有自我更新能力以及多种潜能。一直以来,人们都认为利用MSC对牙周缺损再植是一种有效的牙周组织再生的方法。但是,仍需研发更加有效和可预测性的再植技术方可得以实现。近期,研究们研制了一种混有MSC/细胞外基质(ECM)的复合物(C- MSC),它包含了细胞和细胞自身产物-ECM。C-MSCs能够在体外调剂细胞功能,并且在没有人造支架材料的情况下移植到缺损部位,诱导骨再生。这篇研

间充质干细胞(MSC)拥有自我更新能力以及多种潜能。一直以来,人们都认为利用MSC对牙周缺损再植是一种有效的牙周组织再生的方法。但是,仍需研发更加有效和可预测性的再植技术方可得以实现。近期,研究们研制了一种混有MSC/细胞外基质(ECM)的复合物(C- MSC),它包含了细胞和细胞自身产物-ECM。C-MSCs能够在体外调剂细胞功能,并且在没有人造支架材料的情况下移植到缺损部位,诱导骨再生。这篇研究是为了在比格犬中评估C-MSC再植对牙周组织再生的效果。

研究使用7只比格犬构建前磨牙的III度根分叉缺损模型。从犬髂骨分离出来的MSCs以7.0 × 104 cells/well的密度接种于24孔板中,并在添加了50 ?g/mL抗坏血酸的生长培养基中培养4天。为了获得C-MSCs,研究将融合细胞利用微量加样器吸头刮擦并揭掉形成一个细胞薄板,再将细胞薄板卷起形成一个球型的细胞团块。随后,将C-MSCs放入生长培养基或成骨诱导培养基(DIM)中持续培养5或10天。体外检测C-MSCs的生物特性,通过犬III度根分叉缺损模型评估其体内牙周组织再生能力。

免疫荧光结果显示,C-MSCs周围有I型胶原形成。OIM培养10天显著上调C-MSCs的钙沉积,表明其具有成骨分化能力。与未移植相比较,在没有使用人造支架的情况下,通过生长培养基或OIM培养基培养的C-MSCs植入犬根分叉缺损处均可成功诱导牙周组织再生,并且,成骨分化诱导的C-MSCs可以促使牙槽骨的快速再生。

结论:结果表明,对从自身产生的ECM中提炼出来的C-MSCs应用可能代表了一种新颖的可预测的牙周组织再生疗法。

原始出处:

Takewaki M, Kajiya M, et al. MSC/ECM Cellular Complexes Induce Periodontal Tissue Regeneration. J Dent Res. 2017 May 1:22034517708770. doi: 10.1177/0022034517708770.

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    2017-06-01 huanbaofeng
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    2017-05-31 Y—xianghai

    好极了,新知识。

    0

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    2017-05-30 wxl882001

    学习一下

    0

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