在青春期前的生命中,母亲对环胺的暴露不会影响实验室中获得的小鼠胚胎的冷敏感性
Dhakshanya Predheepan1,2, Sujith Raj Salian1,2, Akshatha Daddangadi1,2
1Division of Clinical Embryology, Manipal 576104, India.
Reproduction & fertility
|January 16, 2026
概括
在青春期前,对循环胺 (CY) 化疗的暴露不会影响小鼠体外受精胚胎的冷生存. 这为儿童癌症幸存者提供了保证,他们可以考虑像体外受精这样的生育治疗.
科学领域:
- 生殖生物学 生殖生物学
- 发育毒理学 发展毒理学
- 癌症治疗方法 癌症治疗方法
背景情况:
- 在青春期前暴露于淋巴毒性化疗,如环胺 (CY),可能会损害女性儿童癌症幸存者的生育能力.
- 有关从这些寻求辅助生殖技术 (ART) 的个人获得的胚胎的发育能力和冷耐受性存在担忧.
研究的目的:
- 在小鼠模型中,评估前青春期CY暴露对体外受精 (IVF) 衍生的胚胎的冷敏感性的影响.
- 评估胚胎存活率,质量和多能性标志物表达,在生命早期CY暴露后进行玻璃化加热后.
主要方法:
- 雌性小鼠在2周大时每周接受两剂环胺 (CY).
- 治疗后六周收集卵细胞,在体外受精,结果分离阶段的胚胎被玻璃化加热.
- 评估了胚胎存活率,胚芽细胞形成,内部细胞质 (ICM) 增殖和多能性标志物 (Oct4,Sox2,Nanog) 的表达.
主要成果:
- 在CY暴露和对照组之间没有观察到温暖后胚胎存活的显著差异.
- 内部细胞质量的增殖和关键多能性标记物的表达在不同组之间仍然可比.
- 胚胎细胞形成率相似,表明对发育潜力没有不良影响.
结论:
- 在青春期前期,母亲暴露于环胺并不会影响小鼠体外受精胚胎的冷弹性.
- 这些发现表明,接受CY治疗的儿童癌症幸存者可能有可行的ART选择,而不会增加冷保存期间胚胎损伤的风险.
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