三个饥饿的试验:致病性试验虫的高效内细胞路径
Narcisa Leal da Cunha-E-Silva1, Carolina de Lima Alcantara1, Miria Gomes Pereira1
1Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro. Avenida Carlos Chagas Filho, Centro de Pesquisas em Medicina de Precisão, Cidade Universitária, Ilha do Fundão, Rio de Janeiro 21941-904, RJ, Brazil; Centro Nacional de Biologia Estrutural e Bioimagens (CENABIO), Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho, 373, Rio de Janeiro 21941-902, RJ, Brazil.
对细胞生存至关重要的内细胞分裂在致病原体原体Trypanosoma cruzi,Trypanosoma brucei和Leishmania中进行了审查. 这些生物体在鞭毛口袋内表现出极化内细胞分裂,与其他原生动物不同.
科学领域:
- 细胞生物学 细胞生物学
- 寄生虫学的寄生虫学
- 分子生物学分子生物学
背景情况:
- 细胞内核分裂是营养吸收和分子纳入真核细胞的重要细胞过程.
- 关于内细胞酶的研究主要集中在哺乳动物和酵母模型上,对致病原体的兴趣越来越大.
- 包括Trypanosoma cruzi,Trypanosoma brucei和Leishmania在内的Trypanosomatids是重要的原生动物病原体.
研究的目的:
- 审查和介绍关于三种医学上重要的试素体内细胞内核过程的关键信息.
- 为了突出这些寄生虫与其他原生动物相比,内细胞形成的独特特征.
- 讨论Trypanosoma cruzi.中的内细胞分裂的具体机制和位置.
主要方法:
- 文献综述现有研究的特里帕诺索马提菌体内细胞内的研究.
- 对Trypanosoma cruzi,Trypanosoma brucei和Leishmania的内细胞通路进行比较分析.
- 检查鞭毛口袋和细胞骨在松胺体内细胞分裂中的作用.
主要成果:
- 特里帕诺索马提类表现出高度两极化的内细胞活动,仅限于鞭毛口袋.
- 与许多具有全表面内细胞分裂的原生动物不同,三生虫利用一个专门的进入点.
- 在Trypanosoma cruzi中,内细胞分裂主要通过细胞组-细胞综合体发生,涉及细胞骨组织和微管.
结论:
- 鞭毛口袋作为特里帕诺索马蒂类动物内细胞的独家位置,代表了与其他原生动物模型的显著分歧.
- 了解Trypanosoma cruzi,Trypanosoma brucei和Leishmania中的偏振内细胞机制对于开发有针对性的治疗策略至关重要.
- 细胞骨架和专门的微管在细胞-细胞综合体中的参与凸显了这些寄生虫中内细胞分裂的复杂调节.
相关概念视频
Recycling Endosomes and Transcytosis
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
Receptor-mediated Endocytosis
Delivery Pathways to the Lysosome
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Maturation of Endosomes
Changes in location
The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
Endocytosis
Endocytosis always begins with the plasma membrane enclosing an incoming molecule to form a transport vesicle which, in some cases, can be coated with a protein called ‘clathrin.' Endocytosed material is either...
The Early Endosome: Endocytosis of Transferrin


