与X相关的基因剂量和SOX2作为克莱因菲尔特综合征中人类生殖细胞规范的关键障碍
Wenteng He1, Qing Luo1, Jian Zhao1,2
1Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, 171 77, Sweden.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 25, 2025
概括
与X相关的基因剂量会影响人类生殖细胞的发育. 像USP9X和SOX2这样的特定基因影响细胞代谢和分化,为男性不孕症和干细胞应用提供了洞察力.
科学领域:
- 发展生物学 发展生物学
- 干细胞生物学 干细胞生物学
- 遗传学 是一个遗传学.
背景情况:
- 克莱因菲尔特综合征 (KS) 是由于额外的X染色体导致男性不孕症的常见原因.
- 在KS和X关联基因剂量效应中生殖线特异性失败的机制尚不清楚.
- 人类多能干细胞 (hPSC) 的分化效率在性别之间可能有所不同.
研究的目的:
- 为了研究X链基因剂量如何影响人类原始生殖细胞样细胞 (hPGCLCs) 规范.
- 探索特定X链基因 (IGSF1,CHRDL1,USP9X) 和SOX2在hPGCLCs分化中的作用.
- 阐明SOX2和SOX17在哺乳动物生殖系规范中的不同作用.
主要方法:
- 在健康和疾病条件下研究了hPGCLCs的规范.
- 分析了X链基因剂量对hPGCLCs分化的影响.
- 研究了USP9X-SOX2调节轴及其对细胞新陈代谢和原始细胞能力的影响.
- 检查了SOX2和SOX17基因调节对BMP信号的反应.
主要成果:
- 相关X基因IGSF1和CHRDL1分别抑制TGF-β/Activin A和BMP通路,影响hPGCLCs的命运能力.
- USP9X上调SOX2,SOX2在哺乳动物生殖系发育中起着特定物种作用,影响新陈代谢和线粒体形态.
- 在响应BMP信号的过程中,SOX2下调和SOX17上调受损,阻碍了下游基因激活.
结论:
- 与X相关的基因剂量通过复杂的调控网络显著影响hPGCLCs的规范.
- USP9X-SOX2轴和SOX2和SOX17之间的相互作用对于生殖线发育至关重要.
- 研究结果提供了对男性不育机制的见解,以及改善hPGCLCs诱导效率的潜在策略.
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