J Endod:来源于牙髓的去细胞基质凝胶促进牙髓干细胞增殖、迁移和多向分化

2020-08-11 lishiting MedSci原创

这篇研究研发了一种来源于牙髓的去细胞基质凝胶(hDDPM-G),它能够为牙髓再生提供可生长的局部微环境。

牙髓是牙髓-牙本质复合体的主要组成,并作为保护系统抵御牙髓外伤/感染。人们期盼着在牙髓炎或牙髓坏死后能够出现一种功能性的牙髓再生。然而,由于局部微环境的解构以及根管系统内缺乏功能性细胞,数十年来牙髓再生一直是一项挑战。这篇研究研发了一种来源于牙髓的去细胞基质凝胶(hDDPM-G),它能够为牙髓再生提供可生长的局部微环境。

研究从人健康智齿中提取牙髓,并将其脱细胞和消化,随后经过溶胶凝胶转变形成hDDPM-G。通过蛋白质组学分析鉴定蛋白成分。将人牙髓干细胞(hDPSCs)接种于hDDPM-G包被的表面,通过IF染色、Transwell迁移和CCK-8检验进行评估。体外检测hDPSCs的诱导分化,并通过免疫染色、western blotting和RT-PCR鉴定。

结果显示,完全脱细胞可以实现。hDDPM中发现的蛋白成分经鉴定有助于促进细胞增殖、迁移和干细胞分化的调控。hDDPM-G涂层表面促进hDPSCs黏附、迁移和增殖。并且,hDDPM-G镀层的诱导培养基在hDPSCs培养14天后能够推进其向成牙本质细胞样细胞、神经样细胞和成血管分化。

结论:这篇研究表明,hDDPM-G能够有效的促进hDPSCs的增殖、迁移和多向分化。基于体温下的注射能力和胶凝作用,hDDPM-G可能具有牙髓再生的潜力。

原始出处:

Junda Li, Zilong Rao, et al. A Decellularized Matrix Hydrogel Derived from Human Dental Pulp Promotes Dental Pulp Stem Cells Proliferation, Migration, and Induced Multidirectional Differentiation in vitro. J Endod., 2020 Jul 14;S0099-2399(20)30495-7. doi: 10.1016/j.joen.2020.07.008.

 

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    2020-11-30 jxrzshh
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    2020-08-14 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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    2020-08-13 lishizhe
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