Abstract
目的观察泊洛沙姆188(P188)对体外三维(3D)培养诱导脐血单个核细胞向巨核细胞分化的影响。方法将分离的脐血单个核细胞分别接种于细胞瓶和细胞培养袋中,后者采用WIGGENS摇床模拟生物反应器进行3D培养。在巨核细胞诱导培养基中加入P188体外培养14 d,观察细胞形态、计数细胞数并计算细胞存活率,采用流式细胞术观察巨核细胞表面标志表达情况。结果与采用传统的细胞培养瓶二维(2D)培养诱导巨核细胞相比,2D+P188培养组巨核系CD41+、CD41+/CD61+、CD61+细胞数明显增加(P值均<0.01);在3D培养中加入P188,细胞体积变大,核形状不规则,胞质含紫红色颗粒,细胞分化更接近成熟。2D培养、3D培养及3D+P188培养组组间巨核细胞表面标志CD41、CD41/CD61、CD61表达水平差异有统计学意义(P值均<0.01)。LSD-t检验两两比较显示,与2D培养相比,3D培养诱导巨核细胞存活率及细胞数均降低(P值分别为0.018、0.027),3D+P188培养组细胞数、细胞存活率与2D和3D培养组比较差异均无统计学意义(P值均>0.05)。而3D培养组巨核细胞CD41/CD61表达水平为(36.30±1.27)%,高于2D培养组的(23.95±1.34)%(P=0.002),3D+P188培养组CD41/CD61表达水平更高[(59.45±1.20)%]。结论3D培养有利于巨核系祖细胞诱导分化,但细胞存活率低,加入P188,细胞生存状态好,且诱导效率更高。
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