在Plasmodium雄性体育生殖过程中,基底体微管单体转变为双体
Shuzhen Yang1, Shanshan Ma2, Chengxian Yuan1
1State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, China.
Nature communications
|October 15, 2025
概括
青杆菌雄性结合体轴基组组装使用独特的微管 (MT) 单片到双片过渡,而不是正规的三片. δ-图布林和e-图布林是这一新过程中的关键调节剂.
科学领域:
- 细胞生物学 细胞生物学
- 寄生虫学的寄生虫学
- 显微镜的使用方法
背景情况:
- 轴组装对于在Plasmodium中进行雄性性生殖过程至关重要.
- 等离子体有一个独特的基底体,固定在核外上,用于轴突模板.
- 与规范的基底体不同,Plasmodium缺乏可检测的微管 (MT) 三重体,使其MT组织和轴突组装机制不清楚.
研究的目的:
- 为了阐明原生微管 (MT) 组织在Plasmodium雄性配体的基体内.
- 为了研究Plasmodium中轴膜MT双重组合的机制.
- 为了确定关键蛋白调节MT组织和轴膜形成在Plasmodium雄性体育生殖过程中的关键蛋白.
主要方法:
- 使用了高分辨率成像技术,包括代超结构膨胀显微镜 (iU-ExM).
- 低温电子断层扫描 (cryo-ET) 用于解决本地MT组织.
- 用P. yoelii的雄性性质组来研究基底体MT结构.
主要成果:
- 菌体表现出明显的MT单元到双元的过渡,与正规的MT三元到双元的过渡不同.
- δ-图布林和e-图布林在雄性性细胞细胞中表达,对于轴膜形成至关重要.
- δ-Tubulin定位在MT B-管道的近端,调节其组合成MT双体.
结论:
- 这项研究揭示了Plasmodium基底体中MT单元到双元转换的原生架构.
- δ-图布林和e-图布林在男性性生殖过程中调节这种独特的MT过渡中发挥着关键作用.
- 这项研究阐明了Plasmodium雄性生殖生物学和寄生虫发育的一个基本方面.
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