在HIRA基因中的新型静音突变与索尼德羊的子大小相关
Chen Wang1, Zhana Naren2, He Bu3
1The State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010020, China.
Animals : an open access journal from MDPI
|October 29, 2025
概括
研究人员在基因细胞循环调节器 (HIRA) 基因中发现了特定的遗传变异,与索尼德绵羊的 litter litter 大小增加有关. 这些发现为改善绵羊繁殖能力提供了潜在的分子标记物.
科学领域:
- 动物遗传学动物遗传学
- 生殖生物学 生殖生物学
- 羊的繁殖 羊的繁殖
背景情况:
- 提高绵羊的繁殖效率对于绵羊产业的经济可行性至关重要.
- 组织素细胞循环调节器 (HIRA) 基因是模型生物体中已知的生殖调节器,但它在绵羊繁殖中的作用尚未得到研究.
研究的目的:
- 为了研究HIRA基因的遗传变异与索尼德羊的子大小之间的关联.
- 确定潜在的分子标记物,以提高绵羊的生殖性能.
主要方法:
- 直接测序用于识别索尼德羊的HIRA基因中的遗传变异.
- 进行了统计分析,以评估发现的突变与幼大小之间的关联.
- 生物信息工具被用来预测突变对mRNA二级结构稳定性的影响.
主要成果:
- 在索尼德羊的HIRA基因中发现了15种新的外基突变.
- 在HIRA的第14个表体中,一个涉及三个特定突变 (c.1521C>G,c.1572C>T,c.1578G>A) 的链接不平衡显示出与 litter 尺寸增加的显着关联 (p < 0.01).
- 预计这些突变通过降低最小的自由能量来增强mRNA二级结构的稳定性,从而可能改变HIRA mRNA结构.
结论:
- 绵羊HIRA基因中的特定遗传变异与索尼德羊的子大小有显著的关联.
- 这些已识别的HIRA基因突变可以作为有价值的分子标记物,用于标记物辅助的选择,以提高绵羊繁殖计划的繁殖率.
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