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Evi Hadjimichael¹, Kirk W Deitsch¹

¹Department of Microbiology and Immunology, Weill Cornell Medical College, New York, NY, USA.

Trends in parasitology

|February 25, 2026

概括

疟疾寄生虫在其生命周期中改变了核糖体RNA的表达. 这种进入蚊子阶段的转变是由由于代谢变化的NAD+/尼古丁胺胺比率的变化引发的.

科学领域:

分子寄生虫学分子寄生虫学
代谢调节代谢调节代谢调节
核糖体生物学的生物学

背景情况:

疟疾寄生虫在整个复杂的传播周期中表现出对核糖体RNA (rRNA) 表达的动态调节.
了解控制这些特定阶段rRNA表达变化的分子机制对于向寄生虫发育至关重要.

研究的目的:

研究在疟疾寄生虫中启动蚊子特异性核糖体DNA (rDNA) 位点脱压的分子触发因素.
阐明代谢转变和相关代谢物比在调节寄生虫传播期间的rRNA基因表达中的作用.

主要方法:

在疟疾寄生虫转化为蚊子载体期间对rRNA表达模式的分析.
在不同发育阶段的寄生虫中测量细胞内NAD+/尼古丁胺胺 (NAM) 比率.
研究改变NAD+/NAM比率对蚊子特异性rDNA位点的表观遗传状态的影响.

主要成果:

疟疾寄生虫表现出与其发育阶段相关的独特rRNA表达特征.
随着寄生虫转化为蚊子,观察到NAD+/NAM比率的显著变化.
蚊子特异性rDNA位点的减弱与这些改变的NAD+/NAM比率直接相关,这表明它们有调节作用.

结论:

代谢重编程,特别是NAD+/NAM比率的变化,是疟疾寄生虫中蚊子特异性rRNA基因表达的关键启动者.
这一发现为寄生虫代谢和特定阶段的基因调节之间提供了新的分子联系,为疟疾控制提供了潜在的目标.

关键词:

无声信息调节器2 (Sir2) 无声信息调节器葡萄糖溶解是什么希斯顿脱乙酶的使用氧化酸化是一种氧化酸化.这是一种核糖体RNA.

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