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绵羊PRLH及其受体基因的克隆及在下丘脑-垂体-性腺轴中差异表达的研究

DOI: 10.7668/hbnxb.2015.03.004, PP. 20-24

Keywords: 绵羊,PRLH,PRLHR,RT-PCR,差异表达

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Abstract:

为了探讨PRLH及其受体基因在绵羊性腺轴中的表达,以绵羊下丘脑-垂体-性腺轴系为研究对象,克隆了PRLH及其受体基因PRLHR,构建了系统进化树,并利用qRT-PCR技术对PRLH及其受体基因在绵羊性腺轴中不同组织的表达差异做了研究。结果表明,绵羊PRLH和PRLHRmRNA核苷酸序列分别为113,237bp,PRLH基因核苷酸序列与山羊、牛、人、小鼠的同源性分别为96.8%,93.3%,80.3%,74.6%,PRLHR基因与藏羚羊、山羊、牛、人和小鼠的同源性分别为100%,99.3%,97.3%,90.4%,84.4%;PRLH及其受体基因在绵羊的下丘脑、垂体、子宫和卵巢中均有一定量的表达,且PRLH基因在下丘脑、垂体和卵巢中的表达要显著低于子宫(P<0.05);PRLHR在子宫与垂体中的表达差异显著(P<0.05),其他差异不明显。说明下丘脑、垂体、子宫和卵巢是PRLH合成分泌和发挥作用的主要器官。

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