人输卵管胚胎营养因子对着床前鼠胚胎基因表达的影响

Effect of human oviductal embryotrophic factors on gene expression of mouse preimplantation embryos

目的探讨人输卵管上皮细胞分泌的胚胎营养因子(ETF)对着床前鼠胚胎基因表达的影响。方法采用液相色谱技术从体外培养的人输卵管上皮细胞系 OE-E6/E7的培养液中分离出ETF,加入培养液后培养鼠胚胎。采用差异显示 RT-PCR 技术比较 ETF 培养的鼠胚胎(培养组)与普通培养液(未加入 ETF)培养的鼠胚胎(对照组)间的基因表达差异。将差异表达片段分离后,进行扩增、克隆、测序和分析。结果培养组胚胎与对照组胚胎共分离克隆了8个差异表达基因,即:RABgeranylgeranyl 转移酶、DEAD-box 蛋白50、RNA 结合结构域蛋白27、二磷酸甲羟戊酸盐脱羧酶、丝氨酸/精氨酸重复基质1、肿瘤差异表达基因2(TDE2)、T 细胞受体α/δ、胚胎发育因子1。结论人输卵管上皮细胞分泌的 ETF 对着床前鼠胚胎的基因表达有影响。

Objective To investigate the effect of embryotrophic factors （ETF） from human oviductal cells on gene expression of mouse early developmental embryos and discuss the role of fallopian tube in early development of embryos. Methods ETF was isolated from conditioned medium of human oviductal cell line by sequential liquid chromatographic systems. Mouse embryos were treated by ETF in vitro. Using differential display RT-PCR, the gene expression of embryos treated by ETF was compared with embryos without ETF treatment. The differentially expressed genes were separated, re-amplified, cloned and sequenced. Results Gene expression profiles of embryos with ETF treatment was different from embryos without this treatment. Eight differentially expressed genes were cloned and sequenced. These genes functioned in RNA degradation, synthesis, splicing, protein trafficking, cellular differentiation and embryo development. Conclusion Embryotrophic factors from human oviductal cells affect gene expression of early developmental embryos. The human oviductal cells play wide roles in early developmental stages of embryos.