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表皮生长因子受体在植入前胚胎细胞中的表达 |
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姜群英 陈士岭 邢福祺
【摘要】 目的 研究表皮生长因子(EGF)受体在植入前胚胎细胞中的表达及其生物学意义。方法 应用间接免疫荧光法检测人植入前胚胎细胞EGF受体的表达情况。结果 未受精卵即卵母细胞、受精卵卵裂后2细胞期至10细胞期胚胎细胞表面均有EGF受体的表达,其表达量的荧光强度基本一致。结论 EGF受体在植入前胚胎细胞中有表达,EGF超家族成员中的肝素结合EGF可能通过与EGF受体结合,参与早期人类胚胎的生长、发育和着床。 【关键词】 受体,表皮生长因子-尿抑胃素;植入前期;胚胎;免疫荧光法
Expression of Epidermal Growth Factor Receptor in Human Preimplantation Embroys
JIANG Qunying (Department of Obstetrics and Gynecology, Wulumuqi General Hospital, Lanzhou Military Area, Wulumuqi 830000, China) CHEN Shiling, XING Fuqi.
【Abstract】 Objective To investigate the expression of epidermal growth factor receptor (EGFR) in human preimplantation embryos and to explore the effect of EGFR on human embryos growth, development and implantation. Methods To detect the localization and expression of EGFR in human preimplantation embryos with indirect immunofluorescence assays(IIF). Results There was EGFR expression in human preimplantation embryos from unfertilized oocyts,2-cell,4-cell,6~8 cell to 10-cell stages embryos. EGFR protein located on the cell membrance surface, and had no obvious variation in intensity of staining from whole stages embryos. Conclusion The expression of EGFR was present in human preimplantation embryos, heparin-binding EGF-like epidermal growth factor (HB-EGF), one of the EGF superfamily members act through the EGFR, EGFR expression may have an imporant role in human embryos growth, development and implantation. 【Key words】 Receptos, epidermal growth factor-urogastrone; Preimplantation phase; Embryo; Fluoroimmunoassay
表皮生长因子(EGF)超家族成员包括EGF、转化生长因子α(TGF-α)、肝素结合EGF(HB-EGF)和双调蛋白(Ar)等,所有这些细胞因子都是EGF受体(EGFR)的配基,通过与EGFR结合,并激活EGFR后发挥生物学作用[1]。已知EGFR广泛存在于人体的许多器官和组织中,近年来有报道,在女性生殖系统如子宫平滑肌、子宫内膜、蜕膜、胎膜和胚泡滋养层细胞中有表达,可促进子宫内膜的生长和分化,在滋养细胞的形成和发育中发挥重要作用,并与分娩发动有关[2,3]。还有研究发现,在人类和啮齿类动物植入前的胚胎也存在EGFR[4-7],EGF家族中的HB-EGF促进胚胎细胞表面EGFR的表达,从而影响人和啮齿类动物植入前胚胎的发育,介导胚泡的着床[8, 9]。我们应用间接免疫荧光法观察了EGFR在植入前胚胎的表达及定位[1] [2] 下一页 上一个医学论文: 荧光原位杂交技术在胚胎植入前性别诊断中的应用 下一个医学论文: 外阴癌39例手术治疗及预后分析
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