超排处理对雌兔生殖器官中表皮生长因子表达的影响
作者:
作者单位:

甘肃农业大学动物科学技术学院 兰州 730070

作者简介:

高颖帆,女,硕士研究生;研究方向:高原家畜繁殖生理;E-mail:2925126120@qq.com。

中图分类号:

S955

基金项目:

甘肃农业大学特色学科开放基金项目(No. GAU-XKJS-2018-037);


Effect of Superovulation on Epidermal Growth Factor Expression in the Reproductive Organs of Female Rabbit
Author:
Affiliation:

College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China

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    摘要:

    为探究外源促性腺激素对伊拉兔(Oryctolagus cuniculu)生殖器官中表皮生长因子(EGF)表达水平及其作用特点的影响,本实验以伊拉兔为研究对象,随机选取30只(雄兔6只,雌兔24只),将雌兔随机分为超排处理组(n = 12),即肌肉注射70 U 孕马血清促性腺激素(PMSG)和100 U人绒毛膜促性腺激素(hCG)和对照组(不注射任何激素,n = 12)。并运用实时定量PCR(qRT-PCR)、蛋白免疫印迹(Western-blot)及免疫组化方法,研究经超排处理的伊拉兔卵巢、输卵管和子宫中表皮生长因子的表达与定位情况。结果显示,在超排处理后的伊拉兔卵巢、输卵管和子宫中,表皮生长因子mRNA与蛋白的表达量极显著高于对照组的卵巢、输卵管和子宫(P < 0.01),其阳性信号分别定位于卵巢的初级卵母细胞、颗粒细胞、内膜细胞、间质细胞和血管内皮细胞,输卵管的纤毛细胞、基细胞、黏膜上皮和肌层中,以及子宫的上皮细胞和内膜细胞中。研究表明,超排使用的外源促性腺激素可促进卵巢、输卵管和子宫中表皮生长因子表达量升高,提示其可能参与伊拉兔的生殖过程并调节卵巢、输卵管和子宫的功能。

    Abstract:

    [Objectives] The study aims to explore the effects of exogenous gonadotropin on epidermal growth factor (EGF) expression level and action characteristics in Hyla Rabbit’s (Oryctolagus cuniculu) reproductive organs. [Methods] In this experiment, 30 Hyla Rabbits (6 male and 24 female) were randomly selected. Female rabbits were randomly divided into superovulation group (intramuscular injection of 70 U pregnant mare serum gonadotropin +100 U human chorionic gonadotropin, n = 12) and control group (no injection of any hormone, n = 12). And Real-time fluorescence quantitative PCR (qRT-PCR), Western-blot and immunohistochemistry were used to study the expression and localization of epidermal growth factor (EGF) in ovaries, oviduct and uterus in superovulation group. SPSS 25.0 software was used for independent sample t test analysis of relevant data. Results were expressed as “mean ± standard deviation”, P < 0.01 means significant difference, P < 0.05 means significant difference. [Results] The results showed that the relative expression level of epidermal growth factor mRNA in different tissues was significantly higher in the superovulation group than in the control group (uterus:t = 17.053, P < 0.01; oviduct:t = 3.009, P < 0.01; ovaries:t = 14.125, P < 0.01) (Fig.1). The relative expression of EGF protein was also significantly higher in different tissues of the superovulation group than the control group (uterus:t = 20.663, P < 0.01; oviduct:t = 19.537, P < 0.01; ovaries:t = 21.272, P < 0.01) (Fig.2). And the positive signals were located in primary oocytes, granulosa cells, endometrium cells, mesenchymal cells and vascular endothelial cells respectively (Fig. 3). Oviduct ciliated cells, basal cells, mucosal epithelium, muscularis and epithelial (Fig. 4), and endometrial cells of the uterus (Fig. 5). [Conclusion] Our study has shown that exogenous gonadotropin used for superovulation can promote the expression of epidermal growth factor expression in ovaries, fallopian tubes and uterus, suggesting that EGF may be involved in the reproductive process of Hyla Rabbit and regulate the functions of ovaries, fallopian tubes and uterus.

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高颖帆,伏晓玉,周娜,李伊健,王欣荣.2023.超排处理对雌兔生殖器官中表皮生长因子表达的影响.动物学杂志,58(3):409-418.

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  • 收稿日期:2022-08-02
  • 在线发布日期: 2023-06-16