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人类精子和精液细胞外囊泡之间的相互作用的疗效和功能后果
Cottrell T Tamessar1,2, Amanda L Anderson1,2, Elizabeth G Bromfield1,2,3
1School of Environmental and Life Sciences, College of Engineering, Science and Environment, The University of Newcastle, University Drive, Callaghan, New South Wales, Australia.
Reproduction & fertility
|September 4, 2024
概括
精液细胞外囊泡 (SFEVs) 将分子信息传递给精子,导致精子运动的轻微变化. 这些囊泡可能会准女性生殖道,而不是男性生殖系.
科学领域:
- 生殖生物学 生殖生物学
- 精子的功能 精子的功能
- 细胞外囊泡 细胞外囊泡
背景情况:
- 已知精液细胞外囊泡 (SFEVs) 与精子相互作用.
- 这些相互作用对精子受精能力的确切功能后果仍然不完全理解.
- 射精含有影响怀孕的分子信号,但它们的身份和功能尚不清楚.
研究的目的:
- 研究精液细胞外囊泡 (SFEV) 与人类精子相互作用的功能后果.
- 探索SFEVs对精子电容,体外细胞和运动性的影响.
- 为了确定SFEV是否有助于精子穿越女性生殖道.
主要方法:
- 从normzoospermic供体精液中分离SFEVs.
- 在体外评估精子-SFEV结合动力学.
- 在SFEV共同化后分析精子电容,体外细胞和运动概况.
- 使用生物标记的SFEV蛋白来追踪转移.
主要成果:
- 在几分钟内,SFEV蛋白质被转移到精子中,主要是鞭子.
- 在pH 7时,SFEVs诱导了总和渐进性运动的微妙增加,但不是pH 5.
- SFEVs改变了精子运动动力学,减少了节拍交叉频率并增加了距离直线,线性,直线性,直线速度和摇摆.
- 没有观察到对精子电容或体外细胞形成的显著影响.
- 在液化前采集的精子中观察到SFEV对运动性的有限影响.
结论:
- SFEVs将分子载荷传递给精子,主要影响精子运动的动力学.
- 观察到对精子运动性的影响是微妙的.
- SFEVs可能具有超出男性生殖线的生理目标,可能在女性生殖道内.
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