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一种用于生殖细胞增殖和维持整个丸的新型培养系统

Yu Xia¹, Xiaoxuan Zhang², Bohang Zhang¹

¹State Key Laboratory of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu, 211166, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|July 28, 2025

概括

一种新的水凝微针系统扩大了精子,为儿童癌症幸存者提供了一种有前途的生育保存方法. 这种方法成功地产生了肥沃的后代,并显示了人类胎儿淋巴体培养的潜力.

科学领域:

生殖生物学生殖生物学
发育生物学是发展生物学.
癌症的生存率癌症的生存率

背景情况:

儿童癌症治疗可以通过性腺毒性引起男性不孕症.
由于精子生产能力有限,在青春期前的男性中保持生育能力是具有挑战性的.
目前用于体外丸培养的方法在扩大足够的精子前体方面存在局限性.

研究的目的:

开发一种先进的体外培养系统,用于青春期前丸组织.
建立一个功能模型来扩大整个丸精子池 (WTSP).
评估该系统在保护和产生功能性精子以恢复生育能力方面的有效性.

主要方法:

开发一种基于水凝微针的培养系统,用于小鼠丸 (产后5天).
在WTSP模型中培养和扩展未分化的精子.
将WTSP移植到裸体小鼠体内,并在体外诱导 meiotic 的过程中.
分析精子的增殖和细胞状态,包括EPHA2信号传递的作用.

主要成果:

与体内衰减相比,WTSP系统实现了未分化精子的四倍以上的扩张.
移植WTSP显著增加每管子的精子数量.
在试验室中介质的诱导成功地产生了肥沃的后代.
该系统在培养的人类胎儿生殖腺中成功地证明了精子的扩散.

结论:

WTSP系统提供了一种可行的方法,用于维持和扩大精子,以保护青春期前男性的生育能力.
这项技术对恢复儿童癌症患者的生育能力具有重大前景.
这项研究确定了EPHA2是通过PI3K-AKT-mTOR通路促进精子生殖增殖的关键因素.

关键词:

保护生育能力保护生育能力在体外器官培养器官培养过程中在体外的精子生成.微针微针是一种微针.精子细胞的增殖和扩散.

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