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相关概念视频

Symbiosis00:58

Symbiosis

Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
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Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
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Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...

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人类疟疾寄生虫Plasmodium falciparum的基因组序列

Malcolm J Gardner1, Neil Hall, Eula Fung

  • 1The Institute for Genomic Research, 9712 Medical Center Drive, Rockville, Maryland 20850, USA. gardner@tigr.org

Nature
|October 9, 2002
PubMed
概括

菌菌的基因组序列揭示了其独特的遗传构成,包括免疫逃避基因. 这为开发新的疟疾药物和疫苗提供了基础.

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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:

  • 疟疾是由Plasmodium falciparum引起的,每年导致数百万例病例和超过一百万例死亡,特别是非洲儿童.
  • 了解寄生虫的遗传结构对于对抗疟疾至关重要.

研究的目的:

  • 为了分析Plasmodium falciparum克隆3D7.7的基因组序列.
  • 识别与寄生虫生物学和疟疾病原发生有关的基因和基因组特征.

主要方法:

  • 整基因组测序Plasmodium falciparum克隆3D7.7. 的一个全基因组测序.
  • 对23兆基核基因组的生物信息分析,包括基因含量和染色体组织.

主要成果:

  • 该基因组包括14个染色体和大约5,300个基因,显示了迄今为止报告的最高 (A+T) 富含量.
  • 抗原变异的基因位于子端粒区域.
  • 该基因组编码的酶/载体较少,但许多基因用于免疫逃避和宿主-寄生虫相互作用.
  • 许多蛋白质都准了虫细胞,参与了新陈代谢.

结论:

  • 疟原虫 (Plasmodium falciparum) 基因组序列为疟疾研究提供了一个基础资源.
  • 这些基因组数据对正在进行的寻找新型抗疟疾药物和疫苗的研究具有重要意义.