JY-1 Regulation Of Granulosa Cell Function And Early Embryonic Development In Cattle
    2.
    发明申请
    JY-1 Regulation Of Granulosa Cell Function And Early Embryonic Development In Cattle 审中-公开
    JY-1颗粒细胞功能和早期胚胎发育规律

    公开(公告)号:US20090263406A1

    公开(公告)日:2009-10-22

    申请号:US12258800

    申请日:2008-10-27

    摘要: The present invention provides compositions and methods for regulating fertility in mammals. In general, the invention relates to a novel protein produced by oocytes named JY-1, and nucleic acids encoding the JY-1 protein, for controlling folliculogenesis and early embryonic development, particularly in monoovulatory species. In particular, the present invention provides nucleic acid and amino acid sequences encoding JY-1, vectors for the expression of JY-1, host cells expressing JY-1, RNAi probes for reducing levels of JY-1 message, and antibodies to JY-1. Specifically, developing and mature oocytes express JY-1 in vivo, while granulosa cells treated in vitro with recombinant JY-1 (rJY-1) protein reduced cell proliferation while increasing progesterone synthesis and estradiol production. Further, reducing JY-1 protein in developing embryos in vitro using inhibitory siRNA constructs corresponded with arrested blastocyte maturation.

    摘要翻译: 本发明提供了调节哺乳动物生育力的组合物和方法。 通常,本发明涉及由命名为JY-1的卵母细胞产生的新型蛋白质,以及编码JY-1蛋白质的核酸,用于控制卵泡发生和早期胚胎发育,特别是单调节物种。 特别是本发明提供编码JY-1的核酸和氨基酸序列,JY-1表达载体,JY-1表达宿主细胞,用于降低JY-1信号水平的RNAi探针,JY- 1。 具体来说,开发和成熟的卵母细胞在体内表达JY-1,而用重组JY-1(rJY-1)蛋白体外处理的颗粒细胞减少细胞增殖,同时增加孕酮合成和雌二醇生产。 此外,使用抑制性siRNA构建体在体外发育胚胎中减少JY-1蛋白质对应于被阻止的胚细胞成熟。