相关实验视频
Updated: Jun 10, 2025
07:03
Mouse Oocyte Microinjection, Maturation and Ploidy Assessment
Published on: July 23, 2011
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在成熟元相I阶段的精子透可以在小鼠模型中触发卵细胞激活
Ching-Chien Chang1, Min Peng2, Li-Kuang Tsai2
1Reproductive Biology Associates, Atlanta, GA, USA.
Reproductive biomedicine online
|October 18, 2024
概括
通过IVF在小鼠中受精成熟的甲相I卵子可以导致健康的后代,尽管异常的染色体数量是令人担忧的. 这表明成熟的卵细胞是辅助生殖生物材料的潜在来源.
科学领域:
- 生殖生物学 生殖生物学
- 发展生物学 发展生物学
- 辅助生殖技术 辅助生殖技术
背景情况:
- 传统的体外受精 (IVF) 通常使用甲相II (MII) 卵细胞.
- 在试管婴儿后,成熟的第I阶段 (MI) 卵细胞的发育潜力不太清楚.
- 研究替代性卵细胞来源可以扩大辅助生殖的选择.
研究的目的:
- 为了确定精子是否可以透到成熟的MI卵细胞.
- 通过使用常规试管婴儿 (IVF) 评估在MI阶段受精的卵细胞的后续发展.
- 评估来自MI卵细胞的胚胎的生存能力和染色体完整性.
主要方法:
- 在HCG注射后的不同时间点使用ICR小鼠进行卵细胞采集.
- 成熟的MI卵细胞 (7小时后HCG) 和MII卵细胞 (15小时后HCG) 接受了传统的试管婴儿.
- 评估了发育参数,包括受精,裂变,胚胎细胞形成和活产率.
- 分析了染色体数和DNA甲基化状态.
主要成果:
- 精子细胞成功地透到成熟的MI卵细胞中,触发激活.
- 来自受精MI卵细胞的胚胎中很大一部分已经达到胚芽细胞阶段.
- 尽管这些胚胎具有发育潜力,但由于没有第二个介质分裂,大量的胚胎是三倍体的.
- 从一些来自MI卵细胞的胚胎中实现了活产.
结论:
- 成熟的MI卵细胞可以通过传统的试管婴儿受精,并具有发育潜力.
- 从成熟的MI卵细胞中可以产生健康的后代,这表明它们作为辅助生殖中的生物材料来源的潜力.
- 来自MI卵子细胞的胚胎中高发生率的动质积分需要进一步调查,特别是关于对人类IVF的影响.
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