目的 探讨骨髓源神经祖细胞诱导小胶质细胞自噬的可能，通过对其代谢物的鉴定及外泌体的分离明确潜在影响小胶质细胞生长的分子机制。 方法 采用细胞生物学技术，电镜检测，结合LCMS/MS检测技术，鉴定骨髓源神经祖细胞中的脂质体代谢物类型。 结果 外泌体可以诱导小胶质细胞发生自噬。骨髓源神经祖细胞培养基中检测到4597种质核比的潜在物质，检测到304种已知的脂质体代谢物质，统计计算得到51种潜在骨髓源神经祖细胞生长过程中潜在代谢分泌的脂质体物质。这些物质都是潜在可引起小胶质细胞发生自噬的物质。 结论 骨髓源神经祖细胞可以诱导小胶质细胞发生自噬现象，促进免疫反应的启动，这一过程中骨髓源神经祖细胞外泌体中携带的脂质体代谢物可能发挥了重要作用。
Objective To explore the possibility of bone marrow derived neural progenitor cells inducing microglia autophagy, and to identify the molecular mechanisms that might affect microglia growth through the identification of its metabolites and the isolation of exosomes. Methods The effects of exosomes on microglia were observed by cell biology and electron microscopy. The liposome metabolite types were identified by chemical reagent extraction and LCMS/MS detection technology. Results Molecular experiments have shown that this exosome can induce autophagy in microglia. The potential substances with the ratio of 4597 kinds of germplasm nuclei were detected in the culture medium of bone marrow-derived nerve progenitor cells, 304 kinds of known liposome metabolites were detected in the culture medium and bone marine-derived nerve progenitor cells. After excluding the inherent liposome metabolites in the culture medium, 51 kinds of potentially metabolized and secreted liposomes in the growth process of bone marrow derived nerve progenitor cells were obtained. These were all substances that can potentially cause autophagy in microglia. Conclusions Bone marrow derived nerve progenitor cells can induce autophagy in microglia and promote the initiation of immune response, during which liposome metabolites carried in exosomes of bone marrow derived nerve progenitor cells may play an important role.
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