通过TAF4B,EEF1B2通过TAF4B调节人类精子干细胞系的增殖和亡
Zenghui Huang1,2,3,4, Ning Li5, Xiren Ji1,3,4
1Reproductive & Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, 410000, China.
Heliyon
|September 16, 2024
概括
EEF1B2对于人类精子干细胞 (SSC) 功能和男性生育能力至关重要. 降低EEF1B2水平会损害SSC的增殖,并与男性不孕症有关,特别是在非阻塞性亚精中.
科学领域:
- 生殖生物学 生殖生物学
- 干细胞研究的研究.
- 分子遗传学 分子遗传学
背景情况:
- 精子干细胞 (SSC) 对于男性的持续精子生产至关重要.
- 了解人类的SSC调节对于男性生殖健康至关重要.
- 与小鼠模型相比,目前对人类SSC调节机制的了解仍然有限.
研究的目的:
- 阐明EEF1B2基因在调节人类SSC增殖和亡中的作用.
- 为了确定潜在的分子标和途径受影响EEF1B2在人类的SSCs.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 用于识别SSC中差异表达的基因.
- 免疫光和免疫组织化学测定人类丸中的EEF1B2分布.
- 细胞增殖,DNA复制和自我更新测试 (CCK8,EDU,西斑,流细胞计).
- RNA测序用于分析下游目标和EEF1B2.2.的信号通路.
主要成果:
- 确定EEF1B2在人体SSC中高度表达,随着发育而下降,并与扩散标志物KI67.7共定位.
- 在人类SSC中抑制EEF1B2显著损害了增殖,生存能力和自我更新标记物 (PLZF,CCNE1).
- EEF1B2的淘汰导致TAF4B的减少,这是一个下游目标,可以在补充时挽救效应.
- 在SSC中观察到EEF1B2表达的减少,这些SSC来自非阻塞性亚精子症 (NOA) 患者.
结论:
- EEF1B2在维持人类SSC的扩散,自我更新和生存能力方面发挥着至关重要的作用.
- 已经确定了一个涉及人类SSC中的EEF1B2和TAF4B的新型调节轴.
- 缺少EEF1B2被认为是男性不孕症的潜在因素,特别是在NOA中.
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