Department of Global Health-Amsterdam Institute for Global Health and Development, Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands.
Department of Medical Microbiology, Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands.
Front Cell Infect Microbiol. 2020 Jun 9;10:272. doi: 10.3389/fcimb.2020.00272. eCollection 2020.
Gut organoids are stem cell derived 3D models of the intestinal epithelium that are useful for studying interactions between enteric pathogens and their host. While the organoid model has been used for both bacterial and viral infections, this is a closed system with the luminal side being inaccessible without microinjection or disruption of the organoid polarization. In order to overcome this and simplify their applicability for transepithelial studies, permeable membrane based monolayer approaches are needed. In this paper, we demonstrate a method for generating a monolayer model of the human fetal intestinal polarized epithelium that is fully characterized and validated. Proximal and distal small intestinal organoids were used to generate 2D monolayer cultures, which were characterized with respect to epithelial cell types, polarization, barrier function, and gene expression. In addition, viral replication and bacterial translocation after apical infection with enteric pathogens Enterovirus A71 and were evaluated, with subsequent monitoring of the pro-inflammatory host response. This human 2D fetal intestinal monolayer model will be a valuable tool to study host-pathogen interactions and potentially reduce the use of animals in research.
肠类器官是源自于肠道上皮的干细胞 3D 模型,可用于研究肠道病原体与其宿主之间的相互作用。虽然该类器官模型已被用于细菌和病毒感染的研究,但这是一个封闭系统,除非进行微注射或破坏类器官的极化,否则无法进入腔侧。为了克服这一问题并简化其在跨上皮研究中的适用性,需要使用基于可渗透膜的单层方法。本文中,我们展示了一种生成人胎儿肠道极化上皮单层模型的方法,该模型已得到充分的表征和验证。使用近端和远端小肠类器官生成二维单层培养物,并对其上皮细胞类型、极化、屏障功能和基因表达进行了特征分析。此外,还评估了肠病毒 A71 和 经顶端感染后病毒的复制和细菌易位情况,并随后监测了促炎的宿主反应。这种人源 2D 胎儿肠道单层模型将成为研究宿主-病原体相互作用的有力工具,并可能减少在研究中对动物的使用。
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