干细胞外泌体系列（一） | 干细胞外泌体概述
一、干细胞外泌体简介
干细胞外泌体是由干细胞分泌的细胞外纳米级囊泡，具有磷脂双分子层结构。它们携带特定的生物活性分子，包括蛋白质、核酸（如miRNA、lncRNA等）、脂质及代谢物，这些内容物反映了分泌干细胞的生物学特性和功能状态。干细胞外泌体通过胞吞作用、膜融合或配体-受体相互作用等方式被靶细胞摄取，从而介导细胞间信息传递和功能调控。干细胞外泌体具有良好的生物相容性、低免疫原性及穿越生物屏障的能力，能够在不同组织和器官间传递信号分子，调节各种生物学过程，包括免疫调节、抗炎、抗凋亡、促血管生成及组织修复等，因此在再生医学领域展现出重要潜力。
二、干细胞外泌体生物学作用
三、干细胞外泌体作用机制
四、干细胞外泌体优势
更易储存与运输：干细胞外泌体的制备和存储相较于干细胞可能更为简便和稳定，可以更大规模地生产和分发。例如，干细胞需要在-196°C的液氮环境中储存，而干细胞外泌体则只需在-80°C下即可长期保存。
五、干细胞外泌体功能与应用
六、展望
参考文献
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