在小鼠中发育,活产和生育,卵子被精子透,暴露于HDAC抑制剂Scriptaid的卵子
Seiji Watanabe1, Youichi Takemoto2, Rei Inoue2
1Department of Anatomical Science Hirosaki University Graduate School of Medicine Hirosaki Japan.
Reproductive medicine and biology
|December 29, 2025
概括
斯克里普泰德通过改善胚胎发育和出生率,在小鼠中增强圆形精子注射 (ROSI). 这种基因组脱乙酶抑制剂在两代后代中没有产生原性影响,这表明其安全性比其他治疗方法更好.
科学领域:
- 生殖生物学 生殖生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 发展性毒理学 发展性毒理学
背景情况:
- 在小鼠中,圆形精子激素注射 (ROSI) 可以导致由于异常的基因组修饰导致低发育潜力.
- 基斯脱乙酶 (HDAC) 抑制剂用于改善ROSI结果,但存在对潜在的低形态后代的担忧.
- 斯克里普泰德是一种HDAC抑制剂,在提高ROSI效率方面具有潜在的应用.
研究的目的:
- 评估Scriptaid在两代老鼠ROSI胚胎中的遗传安全性和有效性.
- 评估斯克里普泰德对质子修饰 (H3K9me3) 和后续ROSI胚胎的发育潜力的影响.
- 在ROSI的背景下,将Scriptaid与其他HDAC抑制剂 (如Trichostatin-A) 的安全概况进行比较.
主要方法:
- 在ROSI的卵细胞透之前,精子被用Scriptaid (250nM) 治疗.
- 在单细胞阶段,ROSI胚胎被Scriptaid (250nM) 处理.
- 从经过处理的ROSI胚胎中获得的后代被繁殖,以产生第二代,以评估长期影响.
主要成果:
- 斯克里普泰德治疗降低了精子和前核中的H3K9me3水平,增强了胚胎细胞形成和活产率.
- 暴露于Scriptaid的后代表现出正常的生长,体重和外表,与体外受精 (IVF) 对照相比较.
- 所有第二代后代都是健康的,表明没有跨代不良影响.
结论:
- 斯克里普泰德有效地提高了ROSI胚胎的发育潜力.
- 在两代Scriptaid治疗后代中没有观察到显著的产性影响.
- 斯克里普泰德似乎是Trichostatin-A更安全的替代品,可以改善ROSI结果.
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