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人胎儿卵巢组织转化生长因子

刘晓红  郑英

摘 要:目的 探讨转化生长因子-α(TGF-α)和表皮生长因子受体(EGFR)在人胎儿卵巢的表达与定位及培养前后的变化。方法 收集20份胎龄为16~40周因各种原因死亡的女性胎儿卵巢标本,对其中10份卵巢标本分3、6、9 d进行组织培养。 采用免疫组织化学方法测定TGF-α和EGFR蛋白在人胎儿卵巢组织中的表达。结果 TGF-α在17份胎儿卵巢卵母细胞、7份卵泡细胞及13份基质细胞有性表达,EGFR在19份卵母细胞及7份基质细胞有表达。TGF-α、EGFR在卵母细胞中的表达均强于卵泡细胞与基质细胞。胎龄与TGF-α、EGFR的表达无相关关系(P>0.05),培养9 d后的卵母细胞TGF-α、EGFR的表达强度均弱于培养前(P<0.05)。结论 人胎儿卵巢存在TGF-α与EGFR局部调节因子,其表达与卵泡生长发育一致。
关键词:转化生长因子α;  受体,表皮生长因子α-尿抑胃素; 胎儿; 卵巢

The Expression of Transforming Growth Factor-α and Epidermal Growth Factor Receptor in Human Fetal Ovary

LIU Xiaohong ZHENG Ying
(Department of Obstetrics and Gynecology Beijing Haidian District Maternal and Child Health Hospital, Beijing 100080, China)

Abstract:Objective To investigate the expression of transforming growth factor- alpha (TGF-α)and epidermal growth factor receptor(EGFR) in cultured and uncultured human fetal ovary. Methods The ovarian tissues were obtained from 20 human female fetuses from 16 to 40 weeks of gestational age and were cultured for 3~9 days. Expression of TGF-α and EGFR protein in the fetal ovarian tissues was examined by immunohistochemical technique. Results TGF-α and EGFR were expressed in the oocytes of 17 fetal ovaries, in part of follicular cells and stromal cells. There was no correlation between gestational age and TGF-α, EGFR expression (P>0.05). The immunostaining intensity of oocytes in the cultured fetal ovary was weaker than those of the uncultured ones (P<0.05). Conclusion TGF-α and EGFR may play a role as intraovarian regulators through autocrine and paracrine mechanism.
Key words:Transforming growth factoralpha; Receptors, epidermal growth factor-vrogastrone; Fetus; Ovary▲

   随着细胞生物学和分子生物学技术的发展,人们对卵巢功能调节的认识不断深化,认为卵巢局部产生的众多肽类物质参与垂体促性腺激素对性腺的调节作用。这些物质通过对分泌细胞本身或邻近细胞发挥作用,形成卵巢的自分泌旁分泌调节系统[1,2]。我们在对人胎儿卵巢的基础研究中,认为体外培养下胎儿卵巢各期卵泡形

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