突虫的PUF3RNA结合蛋白调节线粒体形态和功能
Ana María Mejía-Jaramillo1, Geysson Javier Fernandez1, Hader Ospina-Zapata1
1Biología y Control de Enfermedades Infecciosas, BCEI, Universidad de Antioquia, Medellín, Colombia.
Heliyon
|July 18, 2024
概括
在Trypanosoma cruzi中的PUF3蛋白质影响线粒体基因表达,影响线粒体结构和功能. 淘汰赛和过度表达改变了细胞呼吸,生长和寄生虫的发展.
科学领域:
- 寄生虫学的寄生虫学
- 分子生物学分子生物学
- 欧核生物基因调节 欧核生物基因调节
背景情况:
- 结合RNA的PUF蛋白调节基因表达后转录在真核生物中.
- 一种寄生原生动物Trypanosoma cruzi严重依赖于转录后的基因控制.
- 在T. cruzi.中已经确定了10种PUF蛋白 (Puf1-Puf10).
研究的目的:
- 为了描述Trypanosoma cruzi中PUF3蛋白的功能.
- 研究PUF3基因淘汰和过度表达对寄生虫生物学的影响.
- 确定PUF3在调节线粒体基因表达和功能的作用.
主要方法:
- 在T. cruzi epimastigotes中,基因淘汰 (ΔTcPuf3) 和过度表达 (pTEX TcPuf3).
- RNA测序 (RNA-seq) 用于分析差异性基因表达.
- 传输电子显微镜 (TEM) 用于线粒体形态评估.
- 分析细胞呼吸,生长,细胞分裂,元循环生成,ROS生产和药物反应.
主要成果:
- RNA-seq揭示了淘汰赛 (238个基因) 和过度表达 (187个基因) 线的转录水平的显著变化.
- 淘汰赛主要显示负基因调节,而过度表达显示积极调节.
- 线粒体形态被改变 (胀) 在过度表达.
- 敲击和过度表达都降低了呼吸效率和电子传输系统容量.
- 改变的生物特征包括生长,细胞分裂,元循环生成,ROS产生和尼达反应.
结论:
- 在T. cruzi. 中,PUF3影响线粒体转录.
- TcPuf3淘汰赛或过度表达会影响线粒体结构和功能.
- 虽然不是必不可少的,PUF3通过线粒体调节在寄生虫生物学中发挥着重要作用.
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