一种Plasmodium falciparum的MORC蛋白质复合体通过与异质染色的相互作用来调节基因表达的表观遗传控制
Maneesh Kumar Singh1, Victoria Ann Bonnell2,3,4, Israel Tojal Da Silva5
1Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
微观虫蛋白MORC在疟疾寄生虫发育过程中对基因表达的调节起着关键作用. 它与转录因子和染色质重塑剂结合,控制必要的基因,包括毒性因子.
科学领域:
- 分子寄生虫学 分子寄生虫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因规则 基因规则
背景情况:
- 基因表达的动态控制对于疟疾寄生虫*Plasmodium falciparum*的无性血液发展阶段至关重要.
- 微甲状腺蛋白 (MORC) 是一种与染色质相关的因子,在寄生虫生物学的作用尚不清楚.
研究的目的:
- 调查PfMORC在Plasmodium falciparum*无性血液发育阶段的转录调节中的功能.
- 识别与*Pf*MORC及其基因组标相互作用的蛋白质.
主要方法:
- 多原子分析包括转录组学和全基因组染色质占用率 (ChIP-seq).
- 共同免疫沉用于识别相互作用的蛋白质.
- 基因淘汰研究中的RNA干扰 (RNAi) (*Pf*MORCHA-glmS).
主要成果:
- *Pf*MORC与APETALA2转录因子,DNA螺旋酶和染色体重塑剂相互作用.
- *Pf*MORC的淘汰影响了163个基因的表达,主要来自超变的多基因家族.
- *Pf*MORC定位到压抑的基因位点,包括 *var* 基因,在 trofhozoite 和 schizont 阶段.
结论:
- *Pf*MORC是染色体复合物的组成部分,参与了Plasmodium falciparum*基因表达的表观遗传控制.
- 这种蛋白质在染色质组织和在寄生虫发育过程中调节毒性相关基因家族中发挥作用.
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