Assessment of Toxoplasma gondii lytic cycle and the impact of a gene deletion using 3D label-free optical diffraction holotomography.

Assessment of Toxoplasma gondii lytic cycle and the impact of a gene deletion using 3D label-free optical diffraction holotomography.
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DOI:
10.3389/fcimb.2023.1237594
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发表时间:
2023
影响因子:
5.7
通讯作者:
--
中科院分区:
医学2区
文献类型:
--
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弓形虫是一种分布广泛的单细胞胞内真核顶复门原虫寄生虫,主要与哺乳动物胎儿损伤和流产有关,包括人类。据估计,全世界约有三分之一的人口被这种寄生虫感染。在这里,我们使用了最先进的,无标记的3D定量光学衍射全息断层扫描,以捕获和评估弓形虫溶解周期(入侵,增殖和出口)的基础上实时的折射率分布。此外,我们使用这种技术来分析工程化的CRISPR-Cas9弓形虫突变体,以揭示与亲本系相比细胞物理特性的差异。总的来说,这些数据支持使用全息层析成像作为一个强大的工具,原生动物寄生虫及其与宿主细胞的相互作用的研究。
Toxoplasma gondii is a widespread single-celled intracellular eukaryotic apicomplexan protozoan parasite primarily associated with mammalian foetal impairment and miscarriage, including in humans. Is estimated that approximately one third of the human population worldwide is infected by this parasite. Here we used cutting-edge, label-free 3D quantitative optical diffraction holotomography to capture and evaluate the Toxoplasma lytic cycle (invasion, proliferation and egress) in real-time based on the refractive index distribution. In addition, we used this technology to analyse an engineered CRISPR-Cas9 Toxoplasma mutant to reveal differences in cellular physical properties when compared to the parental line. Collectively, these data support the use of holotomography as a powerful tool for the study of protozoan parasites and their interactions with their host cells.
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