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在小鼠塞尔托利细胞中激素调节尿素激酶和组织类型等离子原激活剂
Sara Carosi1, Federica Innocenti1, Lucia Monaco2
1Department of Anatomy, Histology, Forensic Medicine and Orthopedic, Section of Histology, Sapienza University of Rome, Rome, Italy.
Molecular reproduction and development
|January 28, 2025
概括
血原激活器 (PA) 系统对于丸发育至关重要. 缺乏尿激酶类型PA (uPA) 的小鼠表现出较小的丸,受损的塞尔托利细胞功能和精子质量降低,表明uPA.
科学领域:
- 生殖生物学 生殖生物学
- 分子内分泌学分子内分泌学
- 细胞生物学 细胞生物学
背景情况:
- 塑原激活器 (PA) 系统与哺乳动物性腺形态发生有关.
- 塞尔托利细胞在丸的发育和功能中起着关键作用.
研究的目的:
- 研究组织类型PA (tPA) 和尿素酶类型PA (uPA) 在丸发育中的作用.
- 确定激素调节和基因缺陷对PA系统组件和丸功能的影响.
主要方法:
- 在基底和荷尔蒙条件下的tPA,uPA和PAI-1mRNA和小鼠塞尔托利细胞中的蛋白质表达的分析.
- 评估PA系统组件在不同种子表皮层阶段的表达.
- 从uPA缺乏 (uPA-/-) 小鼠获得的丸的表型分析,包括尺寸,体重,组织学和精子参数.
主要成果:
- 塞尔托利细胞产生tPA和uPA;荷尔蒙治疗增加了酶分泌,但不增加mRNA水平,与减少PAI-1表达相关.
- 对于tPA,uPA和PAI-1的表达不同,取决于种子表皮的发育阶段.
- uPA-/-小鼠表现出较小的丸,管状形态缺陷,残留体的塞尔托利细胞化受损,精子度和运动性降低.
结论:
- PA系统,特别是 uPA,对于正常的丸发育和塞尔托利细胞功能至关重要.
- 激素调节PA活动涉及酶生产和PAI-1抑制之间的平衡.
- uPA缺乏导致严重的丸功能障碍,突出其在男性生殖健康中的关键作用.
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