对干扰素-的子宫内膜反应及其与乳牛母牛随后的生殖表现的关联
G Madureira1, B Mion1, B Van Winters1
1Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada.
Journal of dairy science
|April 20, 2024
概括
牛奶小牛是为了牛奶而生的.
科学领域:
- 生殖生物学和免疫学
- 基因组学和转录基因组学
- 牛的生殖生殖方式
背景情况:
- 干扰素- (IFN-τ) 在确定反动物怀孕方面起着至关重要的作用.
- 了解子宫内膜对IFN-τ的反应是改善乳牛生育能力的关键.
- 子宫内膜反应的个体变化可能会影响生殖成功.
研究的目的:
- 评估乳母小牛对子宫内重组牛干扰素-tau (rbIFN-τ) 的子宫内膜反应.
- 为了将子宫内膜对rbIFN-τ的反应与随后的生育结果相关联.
- 为了研究底层的子宫内膜受体和子宫内膜受性的分子机制.
主要方法:
- 在乳牛中同步雌性周期和子宫内注射rbIFN-τ或盐水.
- 收集子宫光液 (ULF) 和子宫内膜活检以进行转录组分析.
- 根据人工授精 (AI) 后的怀孕率,将母牛分为高度肥沃 (HF) 和低肥沃 (SF) 组.
主要成果:
- 在子宫内膜中,rbIFN-τ升高了干扰素刺激基因的调节,表明了抗病毒反应.
- 在ULF中,rbIFN-τ增加了胆固醇,甘油和氧利平.
- 亚生育的母牛表现出改变的子宫内膜基因表达 (细胞信号,新陈代谢,附着,细胞外基质) 和ULF组成 (较低的甘油醇,改变的氧利平蛋白概况).
结论:
- 对rbIFN-τ的子宫内膜反应是可变的,并且与雌牛的后续生育有关.
- 肥沃和亚肥沃的母牛之间的基因表达和ULF组成的差异突出了子宫受体性的关键途径.
- 有效的子宫内膜-子宫内膜沟通对于成功建立和维持怀孕至关重要.
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