Int J Mol Sci:长期冷冻保存的牙髓干细胞可在体外分化成胆碱能神经元并在体内移植时增强运动神经的再生

2018-09-10 MedSci MedSci原创

由胆碱能神经元的丧失引起的胆碱乙酰转移酶的减少导致乙酰胆碱(Ach)的缺失,其与运动神经变性有关。本研究旨在评估冷冻保存的人牙髓(hDPSCs-cryo)间充质干细胞的体外胆碱能神经分化潜能,并分析体内运动神经再生的规模。 从冷冻保存的牙髓组织中分离并培养冷冻hDPSCs,然后使用三环癸烷-9-基-黄原酸盐(D609)分化成胆碱能神经元。将分化的胆碱能神经元(DF-chN)移植到大鼠中以解决

由胆碱能神经元的丧失引起的胆碱乙酰转移酶的减少导致乙酰胆碱(Ach)的缺失,其与运动神经变性有关。本研究旨在评估冷冻保存的人牙髓(hDPSCs-cryo)间充质干细胞的体外胆碱能神经分化潜能,并分析体内运动神经再生的规模。

从冷冻保存的牙髓组织中分离并培养冷冻hDPSCs,然后使用三环癸烷-9-基-黄原酸盐(D609)分化成胆碱能神经元。将分化的胆碱能神经元(DF-chN)移植到大鼠中以解决坐骨神经缺损,并分析体内运动神经再生的规模。

在体外分化期间,细胞显示出神经元样形态变化,包括轴突纤维和神经元体发育,并且在信使RNA(mRNA)和蛋白质水平上显示出胆碱能神经元特异性标志物的高表达。重要的是,DF-chN具有Ach分泌能力。在具有坐骨神经缺损的大鼠中DF-chN移植后8周,通过开放场测试检测到行为活动明显增加,使用免疫组织化学检测增强的低亲和力神经生长因子受体(p75NGFR)的表达。

综上所述,该研究结果表明,来自冷冻保存的牙髓的干细胞可以在体外成功分化成胆碱能神经元并在体内移植时增强运动神经再生。此外,该研究表明,长期保存的牙髓组织值得用作神经再生领域的自体细胞资源,包括胆碱能神经。

原始出处:

Soomi Jang, Young-Hoon Kang, et al., Cholinergic Nerve Differentiation of Mesenchymal Stem Cells Derived from Long-Term Cryopreserved Human Dental Pulp In Vitro and Analysis of Their Motor Nerve Regeneration Potential In Vivo. Int J Mol Sci. 2018 Aug; 19(8): 2434.

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    2019-02-24 jxrzshh
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    2018-09-12 grace5704
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