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Characterization of an Estrus-Associated Glycoprotein in Oviductal Fluid of Sheep 被引量:2

羊输卵管液中发情相关糖蛋白的性质研究
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摘要 Estrus-associated glycoprotein (EGP) is a special protein in oviductal fluid which appears before ovulation and fertilization and disappears after the embryo passes into the uterus. One-and two dimensional SDS-PAGE and Western blotting with monoclonal antibody or peanut agglutinin were used to characterize the glycoprotein,The specificity of the marking agents enabled the study to proceed without purification. EGP was found to include two proteins: one is acidic with a pH of 4.5 while the other is basic with a pH of 8.0 The molecular weights of their subunits are the same, that is 110 kD. This study may shed light on the mechanism of reproductive Process and be helpful to the development of a more cffective culture medium for in vitro culture of early embryo. 哺乳动物输卵管液为受精和早期受精卵的发育提供了一个理想的生理生化环境。人们对输卵管液的成分已进行了初步研究,其中发情相关糖蛋白(EGP)是被研究的成分之一。EGP仅存在在排卵核受精前后的输卵管液中。当受精卵进入子宫区,输卵管液中的EGP就消失了。显然,EGP是与哺乳动物的早期发育过程密切相关的。尽管人们对EGP的确切生理功能尚不清楚,但作为第一步,首先弄清EGP的理化性质是十分重要的。本文目的在于研究羊输卵管液中EGP的理化性质。本文采用单向(1D)、双向(2D)SDS-聚丙烯胺凝胶电泳(PAGE)和等电聚胶电泳(IEF),结合Wcsternblot技术对EGP的性质进行了研究。由于单克隆抗体及花生凝集素(PeanutAgglutinin)和EGP相结合的专一性很高,所以不必事先对EGP进行纯化就可直接进行分析,我们的结果证明羊EGP包括两种蛋白质,一种是酸性蛋白,它的等电点为数4.5;另一种是碱性蛋白,其等电点是8.0;这两种蛋白亚基的分子量相同,都是10KD。从不同物种间EGP这些理化数据上比较,羊和狒狒的非常接近,但和其他动物的有很多不同。我们认为来自不同动物的EGP可能是一类性质相同的蛋白质,具有相?
出处 《Developmental and Reproductive Biology》 1995年第2期1-6,共6页 发育与生殖生物学报(英文版)
关键词 Estrus-Associated glycoprotein 2D SDS-PAGE Western blot 哺乳动物 输卵管液 发情相关糖蛋白 理化性质
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  • 1Mercader A, Simon C, Galan A, et al. An analysis of spontaneous hatching in a human endometrial epithelial coculture system: Is assisted hatching justified? [J]. J Assist Reprod Genet, 2001, 18(6): 315-319.
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  • 7Ajonuma L C, Ng E H, Chan H C. New insights into the mechanisms underlying hydrosalpinx fluid formation and its adverse effect on IVF outcome [J]. Human Reproduction, 2002, 18(3): 255-264.
  • 8Chan L Y, Chiu P Y. A study of teratogenicity of hydrosalpinx fluid using a whole rat embryo culture model [J]. Human Reproduction, 2003, 19(5): 955-958.
  • 9Anusorn Triwitayakorn,Somchai Suwajanakorn,Kamthorn Pruksananonda,Wisan Sereepapong,Vichuda Ahnonkitpanit.Correlation Between Human Follicular Diameter and Oocyte Outcomes in an ICSI Program[J]. Journal of Assisted Reproduction and Genetics . 2003 (4)
  • 10Tseng-Kai Lin,Robert Kuo-Kuang Lee,Shau-Ping Lin,Shin-Yi Chen,Yuan-Jang Tsai,Tsung-Hsien Su.Short Communication: Growth Retardation of Rabbit Embryos in Ligated Oviducts and the Toxic Effects of Rabbit Tubal Fluid on Mouse Embryo Development In Vitro[J]. Journal of Assisted Reproduction and Genetics . 2001 (7)

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