维生素C可以促进少突胶质细胞的分化和髓鞘再生
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通过大规模的细胞筛选,通过筛选我们发现As-2P(L-ascorbyl-2-phosphate),一种稳定形式的维生素C(Vitamin C,Vc),能显著促进OPC分化为成熟OL。进一步的体外共培养体系研究表明As-2P能促进体外OL包裹神经轴突行成髓鞘。脱髓鞘动物模型研究表明As-2P能促进体内髓鞘的修复,并在cuprizone介导的脱髓鞘动物模型中提供了良好的治疗效果。之后的机制研究表明As-2P促进OPC分化的作用与其抗氧化活性无关,它的作用是通过细胞内而非细胞外的机制来实现的。Vc作为膳食补充剂可以安全食用,它有可能进一步发展成为中枢神经系统脱髓鞘疾病的治疗药物。
Through large-scale cell screening, we identified that As-2P (L-ascorbyl-2-phosphate), a stable form of vitamin C (Vitamin C, Vc), significantly promotes the differentiation of oligodendrocyte precursor cells (OPCs) into mature oligodendrocytes (OLs). Further studies using in vitro co-culture systems demonstrated that As-2P enhances the wrapping of neuronal axons by OLs to form myelin sheaths in vitro. Studies using demyelinating animal models revealed that As-2P promotes myelin repair in vivo and exerts favorable therapeutic effects in the cuprizone-induced demyelinating animal model. Subsequent mechanistic studies showed that the effect of As-2P on promoting OPC differentiation is independent of its antioxidant activity, and it exerts its functions via intracellular rather than extracellular mechanisms. As a safe edible dietary supplement, Vc has the potential to be further developed into a therapeutic agent for demyelinating diseases of the central nervous system.




