通过基因组,转录组和蛋白质组分析对Plasmodium生命周期进行全面的调查
Neil Hall1, Marianna Karras, J Dale Raine
1Pathogen Sequencing Unit, Wellcome Trust Sanger Institute, Genome Campus, Hinxton, Cambridge CB10 1SA, UK. nhall@tigr.org
概括
通过比较疟疾寄生虫基因组,可以发现一组核心基因和多种表达策略. 研究人员发现了在性发育过程中基因沉默的证据,这对于了解疟疾寄生虫生物学至关重要.
科学领域:
- 基因组学就是基因组学.
- 寄生虫学的寄生虫学
- 分子生物学分子生物学
背景情况:
- 疟原虫berghei和Plasmodium chabaudi是疟疾研究的关键模型生物.
- 了解基因调节对于抗击疟疾至关重要.
研究的目的:
- 为了比较不同类型的Plasmodium物种的基因组.
- 识别保存的基因并了解基因表达策略.
- 为了研究疟疾寄生虫中的基因沉默机制.
主要方法:
- 对等性菌种的比较基因组学分析.
- 蛋白质组和微阵列数据的整合.
- 在寄生虫生命周期中分析基因表达模式.
主要成果:
- 鉴定了4500个Plasmodium基因的保存核心.
- 描述了四种不同的基因表达策略.
- 在性发育过程中通过转化抑制观察到转录后基因沉默.
- 在基因沉默中涉及一个47基3'未翻译区域动机.
结论:
- 在所有Plasmodium物种中存在着保存的基因核心.
- 疟疾寄生虫使用复杂的基因表达策略.
- 翻译抑制和特定的RNA动机在性发育过程中调节基因表达,提供潜在的治疗点.
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