在青春期的杜朗羊群中,雌激素受体的表达动力学和雌激素反应
Lexiao Zhu1,2, Gul Muhammad Shahbaz1,2, Huiping Sun1,2
1College of Animal Science, Tarim University, Alar 843300, China.
Genes
|July 29, 2025
概括
雌激醇 (E2) 和雌激素受体 (ERα,ERβ) 在绵羊的青春期中起着关键作用. ERα影响大脑中的反,而ERβ支持卵巢发育和Duolang羊的GnRH调节.
科学领域:
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
- 动物科学动物科学
背景情况:
- 青春期标志着绵羊的生殖能力的建立.
- 绵羊青春期的荷尔蒙调节,特别是在像杜朗羊这样的品种中,尚未完全理解.
- 雌激醇 (E2) 和雌激素受体 (ERα和ERβ) 是关键的,但在这种过渡过程中它们的动态作用需要阐明.
研究的目的:
- 调查杜朗羊在青春期期间雌激醇 (E2) 水平的动态变化.
- 为了检查雌激素受体 (ERα和ERβ) 在羊青春期的下丘脑,垂体和卵巢中的表达模式.
- 探索E2在卵巢颗粒细胞中对ERα,ERβ和GnRH表达的体外影响.
主要方法:
- 在杜朗羊群中评估了前青春期,青春期和青春期后的血清E2度和下丘脑,垂体和卵巢中的ERα / ERβmRNA和蛋白质水平.
- 隔离的初级卵巢颗粒细胞 (GCs) 用于体外刺激,具有不同的E2度.
- 在E2刺激后在GC中评估ERα,ERβ和GnRH的剂量依赖表达.
主要成果:
- 血清E2在青春期开始时达到峰值. 在下丘脑/垂体中,ERα表达减少,但在青春期卵巢中增加.
- 卵巢ERβ表达从青春期前期逐渐增加到青春期后期.
- 在GC中,ERα呈现双相表达,而ERβ和GnRH随着E2的剂量依赖性而增加.
结论:
- 似乎ERα在下丘脑-垂体轴中介导负反,而ERβ与卵巢发育和GnRH调节有关.
- 研究结果提供了对杜朗羊的荷尔蒙控制青春期的见解.
- 可以确定潜在的生殖效率和有针对性的育种策略的生物标志物.
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