J Endod:施以异源性灭菌牙本质基质和牙髓干细胞牙齿的再生:一项体内研究

2020-06-21 lishiting MedSci原创

为组织工程设计的生物材料应无毒无免疫排斥,且具备材料预期的功能。处理过的牙本质基质(TDM)为具有生物活性的细胞外基质,适用于牙齿再生。然而,灭菌对于动物模型中异源性TDM表面特质的影响还未可知。

为组织工程设计的生物材料应无毒无免疫排斥,且具备材料预期的功能。处理过的牙本质基质(TDM)为具有生物活性的细胞外基质,适用于牙齿再生。然而,灭菌对于动物模型中异源性TDM表面特质的影响还未可知。

研究通过SEM、免疫荧光显微镜、免疫组化和RT-PCR体外检测高压灭菌TDM (a-TDM)与牙髓干细胞(DPSCs)的生物学特征及其影响。随后,将a-TDM植入小鼠模型6周,并以DPSCs为底物共同植入山羊动物模型体内以进行牙齿重建。

结果显示,异源性a-TDM诱导并支撑了DPSCs发育为牙本质-牙髓样组织、釉质、牙髓和牙骨质牙周复合体。免疫组化结果显示,在牙齿样组织中DSP, βⅢtubulin, DMP1, Amelogenin, VIII factors, COL-I, CAP和ScxA染色阳性。

结论:异源性a-TDM可以作为有效的支架材料促进DPSCs增殖和多向分化,包括:成牙本质细胞、成纤维细胞、血管细胞和神经末梢。异源性的a-TDM配合DPSCs可作为理想的生物材料以优化牙齿再生。

原始出处:

Chia-Chieh Chang, Ting-An Lin, et al. Regeneration of Tooth With Allogenous, Autoclaved Treated Dentin Matrix With Dental Pulpal Stem Cells: An in Vivo Study. J Endod., 2020 Jun 4;S0099-2399(20)30350-2. doi: 10.1016/j.joen.2020.05.016.

 

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    2021-05-25 jxrzshh
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    2020-06-24 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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    2020-06-23 zhouqu_8
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    2020-06-21 wxl882001

    了解一下

    0

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