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在小鼠中,TCTEX1D2对于精子鞭子形成至关重要

Ryua Harima¹, Kenshiro Hara¹, Kentaro Tanemura^2,3

¹Laboratory of Animal Reproduction and Development, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-Ku, Sendai, Miyagi, 980-8572, Japan.

Scientific reports

|January 18, 2025

概括

TCTEX1D2对于精子鞭状体的形成至关重要,确保了dynein复合物的适当组装. 缺乏TCTEX1D2的小鼠由于鞭毛缺陷而表现出男性不育,突出显示了它在精子运动中的特定作用.

科学领域:

细胞生物学细胞生物学
生殖生物学生殖生物学
分子遗传学分子遗传学

背景情况:

旗和眼是各种生物体中发现的必不可少的运动结构,包括哺乳动物的精子.
滴氨酸复合物,如细胞质滴氨酸2和轴膜滴氨酸,对于毛和鞭毛形成至关重要.
单个dynein子单元在精子鞭子发育中的特定作用尚未完全理解.

研究的目的:

为了研究TCTEX1D2子单元在精子鞭子形成中的功能.
为了确定TCTEX1D2与dynein复合组件的相互作用.
为了阐明TCTEX1D2在精子中dynein复合物的组装和功能中的作用.

主要方法:

同免疫沉测试以确定蛋白质相互作用.
产生和分析Tctex1d2淘汰赛小鼠 (Tctex1d2^-/-).
在淘汰赛小鼠中评估精子形态,鞭状结构和状功能.

主要成果:

TCTEX1D2与细胞质二烯2和内部二烯臂 (轴膜二烯) 的子单元相互作用.
Tctex1d2^-/-小鼠表现出男性不孕症,其特征是鞭毛发育不良和轴膜结构受损.
在Tctex1d2^-/-的精子中观察到细胞质二烯因2亚单元的异常局部化,而运动仍然不受影响.

结论:

TCTEX1D2对于细胞质二烯和内部二烯臂的正确组合至关重要.
TCTEX1D2在小鼠精子鞭毛形成中发挥着关键的,特定的作用,与其在毛囊中的作用不同.
缺少TCTEX1D2导致男性不孕,原因是精子鞭毛结构和功能的严重缺陷.

关键词:

细胞质二烯 2 细胞质二烯在手臂的内侧上.男人不孕不育的情况精子的鞭子是精子的鞭子精子发生是精子生成.TCTEX1D2 的意思是

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