鸡胚原始生殖细胞诱导分化为神经元样细胞的研究

原始生殖细胞（Primordial Germ Cells：PGCs）是指能够发育为性细胞的前体细胞,可作为胚胎干细胞（ES）分离与克隆的一种新型材料,其形态、表面标志、体内外分化潜能及体外培养条件均类似于胚胎干细胞.体外培养过程中,在培养液中加入一定的诱导分化剂,PGCs细胞将发生定向分化.长期以来神经系统损伤和神经退行性病变是临床上难以解决的问题,由于原始生殖细胞具有发育全能性,可以在体外通过对其进行定向诱导,得到特定类型的细胞,这将使原始生殖细胞成为今后细胞替代疗法和组织器官移植的来源.本试验采用不同的诱导剂对PGCs进行诱导,以探讨PGCs细胞向神经细胞分化的适宜条件.

Study of Differentiation of Chicken Primordial Germ Cells into Neuron-like Cells

Primordial germ cells(PGCs) isolated from gonads of stage 19 by Ficoll density gradient centrifugation were cultured in DMEM medium in vitro.Then the second passage PGCs were induced to differentiate into neuron-like cells by different induction media.Specific markers and structures were detected by histochemistry method.The results showed that induction medium RA and IBMX were the best ways to induce PGCs into neuron-like cells,and almost 80%-85% cells exhibited typical neuron-like phenotype after induction.Special Nissl body was found by histochemistry.The effect of induction medium RA+IBMS,RA+BHA+DMSO and RA+BHA+DMSO+IBMX were better than that of induction medium BHA+DMSO.Under the same induction medium,about 80%-85% neuron-like cells could be detected no matter what PGCs were cultured 24 h,48h or 72 h in vitro.